Fix #142 : break long unbroken paste titles instead of forcing horizontal scroll

Add word-break: normal; overflow-wrap: anywhere to .paste-title-bar h1 so a >120-char unbroken title wraps inside the title card at mobile width instead of producing an internal + page-level horizontal scrollbar.
Merge pull request 'Fix #139 : drop unsafe-inline from script-src and style-src' (#159 ) from fix-139 into dev
2026-09-10 09:33:15 -05:00 · 2026-09-10 09:11:00 -05:00 · 2026-09-10 09:08:17 -05:00 · 2026-09-10 13:51:27 +00:00 · 2026-09-10 08:51:13 -05:00 · 2026-09-10 13:43:21 +00:00
80 changed files with 5174 additions and 1207 deletions
@@ -2,7 +2,7 @@ name: CI
 on:
  push:
-    branches: [main]
+    branches: [main, dev]
    tags: ['v*']
  pull_request:
@@ -23,8 +23,8 @@ jobs:
        run: go test -v ./...
  docker:
-    # build & push image only on tags (releases)
+    # build & push image only on tags (releases) and dev branch (dev deploy)
-    if: startsWith(github.ref, 'refs/tags/')
+    if: startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/dev'
    needs: test
    runs-on: [debian-latest]
    env:
@@ -55,8 +55,9 @@ jobs:
        with:
          context: .
          push: true
          build-args: VERSION=${{ gitea.ref_name }}
          tags: |
            git.archfox.org/poslop/palette:${{ gitea.ref_name }}
-            git.archfox.org/poslop/palette:latest
+            ${{ startsWith(gitea.ref, 'refs/tags/') && 'git.archfox.org/poslop/palette:latest' || '' }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
@@ -4,3 +4,4 @@ palette.db-shm
 palette.db-wal
 admin-key
 settings.json
 :memory:.files/
@@ -9,7 +9,8 @@ COPY go.mod go.sum ./
 RUN go mod download
 COPY . .
-RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /palette ./cmd/palette
+ARG VERSION=dev
 RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w -X palette/internal/web.Version=${VERSION}" -o /palette ./cmd/palette
 # ---- runtime stage ----
 FROM alpine:3.20
@@ -0,0 +1,679 @@
 Palette - self-hosted pastebin with paste cans
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 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.
    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If your software can interact with users remotely through a computer
 network, you should also make sure that it provides a way for users to
 get its source.  For example, if your program is a web application, its
 interface could display a "Source" link that leads users to an archive
 of the code.  There are many ways you could offer source, and different
 solutions will be better for different programs; see section 13 for the
 specific requirements.
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU AGPL, see
 <https://www.gnu.org/licenses/>.
@@ -1,33 +1,34 @@
 # Palette
 Palette is a fast, self-hosted pastebin. One Go binary, a SQLite database, and
-a web UI for sharing code and text with links that expire on your terms.
+a web UI for sharing text and small files
 > [!NOTE]
 > <table><tr><td>
 > <sub>✨ This project was built by AI — <strong>GLM 5.3 Flash</strong> on the <strong>Hermes Agent</strong> harness, with a human in the loop.</sub>
 > </td></tr></table>
 ## Features
- Paste cans — bundle notes, text, and files into one shareable page
+- Multiple files in one paste
- Password lock — protect individual pastes with a password
+- Password protected pastes
- Custom expiry — from 1 minute up to 1 year, or never
+- Expir after a specified time
- Burn after N reads — a paste that vanishes after a chosen number of reads
+- Burn after a number of views
- Custom URLs — reserve `/my-snippet` instead of a random slug
+- Custom URLs
 - Syntax highlighting with language auto-detection (go-enry)
- Rate limiting on create and unlock
+- Local cookie based submission history
- Saved page — see and manage everything created from your browser
+- Cookie based settings
- API-first — every UI action is also a plain HTTP call
+- Themes!
- Single binary — templates and assets are embedded; no external deps
+
 ## Screenshots
 | | |
 |---|---|
 | ![Editor in midnight](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fmidnight-new.png) | ![Paste view in pastel-peach](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fpastel-peach-paste.png) |
 | ![History in pastel-lavender](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fpastel-lavender-history.png) | ![Saved in pastel-cloud](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fpastel-cloud-mine.png) |
 ## Get Started
 ### Build from source
 Requires Go 1.21+.
 ```bash
 go build -o palette .
 ./palette
 # open http://localhost:8080
 ```
 ### Docker
 ```bash
@@ -36,12 +37,22 @@ docker run -p 8080:8080 -v palette-data:/data git.archfox.org/poslop/palette
 The SQLite database lives in the `/data` volume inside the container.
-## Screenshots
+## Docker Compose
 See [docker-compose.yml](docker-compose.yml) for a ready-to-use example with
 every environment variable documented, including which are required (only the
 /data volume) and which are optional.
 ### Build from source
 Requires Go 1.27+.
 ```bash
 go build -o palette ./cmd/palette
 ./palette
 # open http://localhost:8080
 ```
 | | |
 |---|---|
 | ![Editor](docs/palette-previews/pastel-lavender-new.png) | ![Paste view](docs/palette-previews/pastel-lavender-paste.png) |
 | ![History](docs/palette-previews/midnight-history.png) | |
 ## Configuration
@@ -52,45 +63,36 @@ The SQLite database lives in the `/data` volume inside the container.
 | `PALETTE_MAX_TEXT` | `5242880` | Max paste size in bytes (5 MB) |
 | `PALETTE_MAX_ITEM` | `26214400` | Max can item size in bytes (25 MB) |
 | `PALETTE_ADMIN_KEY` | generated | Admin key; if unset a 32-char hex key is generated and persisted to `<db-dir>/admin-key` (0600) |
 | `PALETTE_DEFAULT_DARK` | dark on | Default dark mode for new visitors. Set `false`, `0`, or `off` to default to light mode. Visitors who toggle dark mode keep their choice in their browser. |
-### Admin
+An `/admin` page exists for runtime settings, protected by a key set at
-
+install (`PALETTE_ADMIN_KEY` env var) and resettable locally — see
-`GET /admin` serves the admin page. Enter the admin key there — it is stored in
+[API](https://git.archfox.org/poslop/palette/wiki/API) and the [design docs](https://git.archfox.org/poslop/palette/wiki/Home) in the wiki for details.
 `sessionStorage` (never a cookie) and sent as the `X-Admin-Key` header on
 `GET`/`POST /admin/api/settings`.
 The admin API reads/sets: rate-limit burst, rate-limit refill per minute, max
 content bytes, default expiry, custom URL reservation days, and the burn
 viewer window (minutes). All admin access attempts are logged.
 ```bash
 ./palette --reset-admin-key   # regenerate the admin key and print it
 ```
 ## API
-Create a paste with one call:
+Full REST API: [wiki/API](https://git.archfox.org/poslop/palette/wiki/API). One example:
 ```bash
-curl -X POST http://localhost:8080/api/pastes \
+curl -X POST http://localhost:8080/api/pastes -d '{"content":"hello"}'
  -H "Content-Type: application/json" \
  -d '{"content": "print(hello)", "language": "python", "expires_in": "168h"}'
 ```
-Full API docs: [docs/API.md](docs/API.md). Design docs: [docs/design/](docs/design/) (currently: [client-side E2E encryption](docs/design/e2e-encryption.md), issue #39).
+Design docs: [wiki/design](https://git.archfox.org/poslop/palette/wiki/design-attachments-storage) (e2e encryption, attachments & storage, cookie preferences).
 ## Performance Notes
 The history and Saved pages use client-side filtering: when you type in the
 search box, the UI fetches the most recent 100 pastes (`limit=100`, the API
 maximum) once per query and filters/sorts them in the browser. Pastes beyond
 the newest 100 are not searched; a match count against the full total is still
 shown. This keeps search instant without a server-side query. If large
 instances need full search later, it will be a server-side endpoint (see
 issue #32).
 ## CI
-Gitea Actions workflow at `.gitea/workflows/ci.yml`:
+## License
- On push to main: `go vet` + `go test`
+
- On tags: build and push Docker image to `git.archfox.org/poslop/palette`
+Palette is licensed under the GNU Affero General Public License v3.0
 (AGPL-3.0-only). See [LICENSE](LICENSE).
 The software is provided AS IS, without warranty of any kind, express or
 implied, including merchantability and fitness for a particular purpose.
 In no event shall the authors be liable for any claim, damages, or other
 liability, including without limitation any security vulnerabilities,
 data loss, or legal issues arising from use of the software. You use it
 at your own risk.
 If you run a modified version of Palette as a network service, the AGPL
 requires you to offer your modified source code to its users.
@@ -42,6 +42,7 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
 	web.SetDefaultDark(os.Getenv("PALETTE_DEFAULT_DARK"))
 	srv := api.NewServer(st, cfg, ui, ss, adminKey)
 	log.Printf("palette listening on %s", cfg.Addr)
 	log.Fatal(http.ListenAndServe(cfg.Addr, srv.Routes()))
@@ -0,0 +1,46 @@
 # Example docker-compose deployment for Palette.
 # All environment variables are optional; sensible defaults apply.
 # The only hard requirement is a volume on /data so the SQLite database
 # and the auto-generated admin key survive restarts.
 services:
  palette:
    image: git.archfox.org/poslop/palette:v0.2.2
    # image: git.archfox.org/poslop/palette:latest   # tracks main, less stable
    restart: unless-stopped
    ports:
      - "8080:8080"          # host:container; the app listens on :8080
    volumes:
      - palette-data:/data   # REQUIRED: SQLite db, admin key, attachments
    environment:
      # Address the server binds to inside the container.
      # Default: ":8080". Only change if you also change the ports mapping.
      PALETTE_ADDR: ":8080"
      # Path to the SQLite database file.
      # Default: "/data/palette.db". Keep it on the /data volume.
      PALETTE_DB: "/data/palette.db"
      # Admin API key for /admin/api/settings (rate limits, size caps, expiry).
      # Default: random key generated on first start and persisted to
      # /data/admin-key (mode 0600). Read it with:
      #   docker compose exec palette cat /data/admin-key
      # Set this only if you want a fixed key (e.g. for automation).
      # PALETTE_ADMIN_KEY: "change-me"
      # Max size in bytes of a single text paste. Oversized creates get 413.
      # Default: 5242880 (5 MiB).
      # PALETTE_MAX_TEXT: "5242880"
      # Max size in bytes of a single can item (file/text inside a can).
      # Default: 26214400 (25 MiB).
      # PALETTE_MAX_ITEM: "26214400"
      # HMAC secret for password-unlock cookies. Default: random per start,
      # which logs out every unlocked browser session on restart. Set a fixed
      # secret (any random string) to keep unlock sessions across restarts,
      # or when running multiple replicas that must agree.
      # PALETTE_UNLOCK_SECRET: "generate-with-openssl-rand-base64-32"
 volumes:
  palette-data:
@@ -1,109 +0,0 @@
 # Palette API
 All endpoints are JSON unless noted. The web UI is served from the same port.
 ## Create paste
 ```bash
 curl -X POST http://localhost:8080/api/pastes \
  -H "Content-Type: application/json" \
  -d '{
    "content": "print(hello)",
    "title": "my snippet",
    "language": "python",
    "expires_in": "168h",
    "password": "optional",
    "custom_slug": "optional",
    "burn_after_read": false,
    "burn_after_reads": 1,
    "visibility": "public"
  }'
 ```
 - `expires_in` is a Go duration string (`90m`, `6h`, `336h`). Omit for no expiry.
 - `visibility` is `public` or `unlisted`.
 - `burn_after_reads` sets how many reads the paste survives (default 1 when
  `burn_after_read` is true). A read is counted per unique viewer session;
  the same viewer returning within 15 minutes does not count again.
 - Response includes `id`, `url`, `raw_url`, `api_url`, `expires_at`,
  `created_at`, and a one-time `deletion_token`.
 Errors: `400` invalid body/content too large/duplicate slug, `401` password
 required, `404` paste expired/burned/gone, `413` content exceeds max bytes,
 `429` rate limited.
 ## Get paste
 ```bash
 curl http://localhost:8080/api/pastes/{id}
 # password-protected pastes:
 curl "http://localhost:8080/api/pastes/{id}?password=secret"
 # or via header: X-Paste-Password: secret
 ```
 The response includes `reads_remaining` (`null` when no read budget is set).
 ## Raw content
 ```bash
 curl http://localhost:8080/raw/{id}
 ```
 Raw reads count against a burn-after-read budget, same as page views.
 ## Delete
 ```bash
 # soft delete (requires the deletion token from the create response)
 curl -X DELETE -H "Authorization: Bearer TOKEN" http://localhost:8080/api/pastes/{id}
 # ...or via query param; the creator browser (viewer cookie) may also delete without a token
 curl -X DELETE "http://localhost:8080/api/pastes/{id}?token=TOKEN"
 # hard delete immediately (requires the one-time deletion token)
 curl -X DELETE "http://localhost:8080/api/pastes/{id}/redeem?token=TOKEN"
 ```
 ## Lists
 ```bash
 curl "http://localhost:8080/api/public?limit=25&offset=0"   # public history
 curl http://localhost:8080/api/mine                          # this browser's pastes (viewer cookie)
 ```
 ## Language detection
 ```bash
 curl -X POST http://localhost:8080/api/guess-language \
  -H "Content-Type: application/json" \
  -d '{"content": "package main"}'
 ```
 ## Cans (bundles of items)
 ```bash
 curl -X POST http://localhost:8080/api/pastes/can \
  -F "title=My bundle" \
  -F "expires_in=48h" \
  -F 'json_items=[{"title":"notes.txt","content":"some notes"}]' \
  -F "files=@screenshot.png" \
  -F "files=@log.txt"
 curl http://localhost:8080/api/cans/{id}
 curl http://localhost:8080/api/cans/{id}/items/{item_id}
 ```
 ## Web pages
 - `/new` — create a paste
 - `/history` — public paste history
 - `/mine` — pastes created from this browser
 - `/{id}` — view a paste
 - `/unlock/{id}` — password gate for protected pastes
 - `/raw/{id}` — raw content with original content type
 ## Expiry and deletion
 - Expired pastes are soft-deleted by a background sweeper (runs every minute).
 - Soft-deleted pastes are hard-deleted after a 7-day grace period.
 - Deletion tokens allow immediate hard delete.
 - Burn-after-read pastes are soft-deleted once the read budget is exhausted.
@@ -1,78 +0,0 @@
 # Attachments & Storage Backend Design (#38, #31)
 Status: research/design, no implementation. Consumers: paste cans (#4).
 ## Part A — Attachments: S3/MinIO vs filesystem-on-volume (#38)
 ### Options
 **Option 1: Filesystem on the k3s PVC (current 5Gi volume).**
 Store blobs under `<data-dir>/attachments/<paste-id>/<n>-<sha256-8>`, metadata in SQLite (paste_id, filename, size, sha256, mime, created_at).
 - Pros: zero new infra, zero new credentials, trivial backup (the volume backup job already covers the DB), atomic rename on write, works in dev and prod identically.
 - Cons: volume is size-capped (5Gi today; resizable but bounded); serving large files passes through the app process (no ranged-GET offload); multi-replica later would need RWX volume.
 **Option 2: MinIO via S3 API.**
 MinIO is already proven in this homelab (Outline). Store at key `<paste-id>/<n>`; same SQLite metadata row.
 - Pros: effectively unbounded capacity, presigned URLs (direct browser download, offloads serving from palette pods), ranged requests free, lifecycle rules could auto-expire orphaned objects.
 - Cons: another credential/secret to manage, another failure mode, MultipartForm still terminates at the palette pod (MinIO only helps *serving*, not *uploading*, unless we do presigned uploads — which breaks the cans multipart flow and the auth/unlock checks), backup now spans two systems.
 ### Key considerations
 - **Upload path is the same either way.** Palette receives `multipart/form-data` (cans need text items + file drops in one request), must enforce auth/password/burn rules server-side. A filesystem backend adds no upload complexity; S3 adds an extra hop (buffer → PUT to MinIO). Streaming straight from `multipart.Reader` to the sink works for both (`io.Copy` to a temp file, or to an S3 PUT with `Content-Length` known or multipart buffering).
 - **Size limits.** Everything is admin-tunable via the settings API (#40 pattern) — add `max_attachment_bytes` (default 10 MiB, hard server-side cap checked *before* reading the body via `Content-Length`, plus a counted reader during copy so chunked uploads can't lie). SQLite itself is not a constraint either way; the PVC is the real cap for Option 1.
 - **MIME handling.** Security-critical (pentest #34 already fixed a content-type XSS on `/raw`). Rules:
  - Never trust the client-declared Content-Type. Sniff the first 512 bytes (`http.DetectContentType`), intersect with an allowlist.
  - Serve from a dedicated route (`/{id}/a/{n}`) with `Content-Type` from the stored *sniffed* type, `X-Content-Type-Options: nosniff`, `Content-Security-Policy: sandbox`, `Content-Disposition: attachment` unless the type is on a safe-inline allowlist (text/plain, images, PDF at user opt-in).
  - Never render user HTML/SVG inline (`image/svg+xml` is XSS-capable — serve as `attachment` always, or store sanitized).
 - **Streaming & serving.**
  - Filesystem: `http.ServeContent` on the opened file gives ranged GETs, ETag, Last-Modified for free.
  - MinIO: proxy via `GetObject` + `io.Copy` (simple, keeps auth checks in palette) or presigned GET (faster, but URL embeds credentials-temporarily and bypasses palette's per-request auth — wrong for pastes with passwords/burn semantics). Given cans inherit password/burn parity (#4), **proxying is required, which erodes MinIO's main serving advantage**.
 - **Lifecycle parity.** Attachments must honor soft-delete grace and sweep: sweeper hard-delete also removes blobs (files: `os.Remove`; S3: `DeleteObject`), best-effort with logging; orphan sweep job compares DB rows to store contents.
 ### Recommendation
 **Filesystem-on-volume first.** At current scale (single replica, PVC-based deploy, one user + homelab traffic) it is simpler end-to-end and keeps serving/auth/lifecycle in one place. The internal API should be a narrow blob interface (`Put(ctx, key, r io.Reader, size int64) / Open(key) / Delete(key)`) — about 60 lines per backend — so **MinIO becomes a drop-in later** if attachments outgrow the volume. That's the honest middle path: filesystem default, S3-ready seam, no MinIO dependency until it pays for itself.
 ## Part B — SQLite vs Postgres vs Redis (#31)
 ### Assessment of SQLite at pastebin scale
 - **Driver**: modernc.org/sqlite (pure Go, no cgo) — slightly slower than mattn/go-sqlite3 but fine; single-writer semantics are the real constraint, not driver speed.
 - **Access pattern**: paste-heavy, write-rare/read-often; primary keys and small set of indexes (visibility+created, expires, deleted); no joins beyond can items. This is SQLite's best case.
 - **WAL mode** is already on (`journal_mode(WAL), busy_timeout(5000)`) — concurrent readers don't block the single writer.
 - **Numbers**: SQLite comfortably handles millions of rows and hundreds of reads/sec; WAL write throughput is thousands of small inserts/sec. A pastebin doing even 100k pastes (avg 10 KB = ~1 GB DB) is trivial. Reads: prepared `WHERE id=?` lookups at this size are sub-millisecond.
 - **Weak points to watch** (document, none urgent):
  1. Single writer — heavy concurrent create traffic serializes. Mitigation: already rate-limited (#2); fine until that's the bottleneck (unlikely).
  2. `LENGTH(content)` on every list row — fine now; if it shows up in profiling, store `size` as a column (schema already has a `Size` field; list queries could use it).
  3. Sweeper runs a table-wide `UPDATE`+`DELETE` on tick — indexed, fine.
  4. No network access to the DB file — locks palette to single-replica. Acceptable: current deploy is one replica.
 - **Redis is the wrong tool** here: it's a cache/queue, not a system of record. Pastes are durable data with expiry semantics already implemented in SQLite. Redis would only add an optional read-cache layer for hot pastes — pure complexity for zero measured need.
 ### Should we build a backend abstraction (SQLite default, optional Postgres)?
 Arguments for: multi-replica scaling later; "docker image env choice" sounds nice; Postgres gives real concurrency and network access.
 Arguments against: a `Store` interface covering the current query surface is a real refactor (sqlite-flavored SQL: `INSERT OR IGNORE`-style upserts, partial indexes, `?` placeholders are compatible but behaviors differ — e.g. `sqlite` driver pragmas, transaction isolation, `AUTOINCREMENT` semantics); two backends means two test matrices and two migration paths forever; and there is **no current need** — single replica, single writer, modest data.
 **Recommendation: stay SQLite-only. Do not build the abstraction now.**
 Specifically:
 1. Keep all persistence behind `internal/store` (already done in #35 — the package boundary *is* the abstraction, at zero cost).
 2. Avoid SQLite-specific SQL going forward where free (standard placeholders, no `RETURNING` quirks) — cheap discipline that keeps a future port honest.
 3. Define the trigger conditions for revisiting, and write them down:
   - multiple replicas needed (scale-out), or
   - sustained WAL write contention (busy timeouts observed in logs), or
   - DB file > ~5-10 GB, or
   - a concrete user request for a Postgres-backed image.
 4. When a trigger fires, port `internal/store` to Postgres behind an interface extracted *then* — the refactor is mechanical against a real need, instead of speculative complexity now.
 5. For the docker image: `PALETTE_DB_PATH` env already implies the deployment choice; no extra backend knob needed.
 ## Summary
 | Decision | Choice |
 |---|---|
 | Attachment backend | Filesystem on PVC, behind a ~3-method blob interface; MinIO as a later drop-in, not a dependency |
 | Size limits | `max_attachment_bytes` admin setting, default 10 MiB, enforced pre-read + during stream |
 | MIME | Server-side sniff (512 bytes) + allowlist; `nosniff`, CSP `sandbox`, `Content-Disposition: attachment` except safe-inline types; SVG never inline |
 | Database | SQLite (WAL, modernc) only; no Postgres/Redis, no backend abstraction until a written trigger fires |
@@ -1,160 +0,0 @@
 # Design: Cookie-Based Preferences and Access Keys (#30)
 Status: design note — no implementation yet.
 Related: #37 (vwr viewer cookie), #34 (HMAC unlock cookie), #26 (creator auto-unlock), #36 (settings gear).
 ## Current cookie surface
 | Cookie | Purpose | Lifetime | Flags today |
 |---|---|---|---|
 | `vwr` | Anonymous viewer id; scopes `/mine` history and burn-after-N per-viewer dedupe; client-sent `vwr` also authorizes delete | 1 year | `HttpOnly`, `SameSite=Lax`, `Path=/` |
 | `pw_<id>` | Per-paste password unlock token = HMAC(paste id, PALETTE_UNLOCK_SECRET) | 1 hour | `HttpOnly`, `SameSite=Lax`, `Path=/` |
 | `tok_<id>` | One-time deletion-token handoff after create | 60 s | `HttpOnly`, `SameSite=Lax`, `Path=/` |
 The access-key feature is an extension of the `pw_<id>` pattern, not a new mechanism.
 ## Part 1: Preference storage
 ### What settings
 Only settings the *creator* sets when writing a paste, so the "new paste" form
 can pre-fill them:
 - Default language (`lang`)
 - Default expiry (`expires_in` / custom expiry)
 - Burn-after-N-reads default
 - Password-protect-by-default toggle (checkbox pre-checked; the password itself is never stored)
 - Default visibility of the "raw" link, if such a toggle exists
 - Collapsed/expanded state of the settings gear panel itself
 Never stored in cookies: passwords, access keys for pastes the user hasn't
 unlocked, deletion tokens (beyond the existing 60 s `tok_` handoff), anything
 typed into the paste body or title fields (existing rule: auto-detect must not
 overwrite user-typed content).
 ### One cookie, not many
 A single `prefs` cookie holding a compact JSON object:
 ```
 prefs={"lang":"go","exp":"1h","burn":0,"pw":1}
 ```
 - One cookie avoids the browser per-domain cookie count (typically 50+ per
  domain; Chrome 180) eating the budget that per-paste access-key cookies need.
 - Per-paste cookies (`pw_<id>`) are inherently name-per-paste and cannot be
  consolidated — that's the constraint that makes a single `prefs` cookie
  mandatory rather than stylistic.
 ### Size limits
 - RFC 6265: user agents SHOULD support at least 4096 bytes per cookie. Keep
  `prefs` under 256 bytes of JSON — it holds a handful of short enum values.
 - Server behavior: if the cookie is present but oversized/invalid JSON, ignore
  it silently and serve defaults. Never reject a request over a bad preference
  cookie.
 - Validate on the server (allowlist of known values); a cookie is untrusted
  input like any header.
 ### Flags
 `HttpOnly; SameSite=Lax; Path=/; Max-Age=31536000; Secure` (Secure once the
 prod instance serves HTTPS — it will, behind the letsencrypt IngressRoute;
 dev on plain HTTP needs the flag conditional on config).
 Preferences are not sensitive, but `HttpOnly` costs nothing and keeps script
 from mutating them; `SameSite=Lax` matches the existing cookies.
 ## Part 2: Access-key cookies
 ### Goal
 "Remember unlocked pastes on this browser" — after entering a password (or
 after creating a private paste), subsequent visits skip the unlock form. This
 extends `pw_<id>` from a 1-hour session convenience to a durable capability.
 ### Design: extend `pw_<id>`, don't invent a new scheme
 The token is already HMAC(paste id, PALETTE_UNLOCK_SECRET) — unforgeable and
 per-paste (fix for the #34 bypass). Changes:
 1. **Opt-in checkbox on the unlock form** ("remember on this browser") and a
   matching checkbox/note at creation time. Default OFF. Non-consenting
   visitors keep the current 1-hour cookie.
 2. **Extended lifetime** when opted in: `Max-Age = min(paste expiry, 90 days)`.
   The cookie must never outlive the paste — derive the cap from the paste's
   `ExpiresAt` at unlock time. Burn-after-N pastes: cap short (e.g. 24 h),
   since the paste may burn at any read.
 3. **Name collision**: paste ids are fixed-length server-generated, so
   `pw_<id>` names stay bounded (~40 bytes each). With the 50-cookies-per-
   domain budget, cap remembered pastes at ~30: when minting the 31st, drop
   the oldest expired-paste cookies server-side (server knows which ids are
   expired/deleted; send expired `Set-Cookie` with `Max-Age=0` to reclaim).
 4. **Delete authorization interplay**: today a client-sent `vwr` matching the
   paste's ViewerID authorizes delete. Access-key cookies grant *read*
   capability only. Do not let a `pw_<id>` cookie authorize deletion — that
   would mean cookie theft escalates from "read a paste" to "destroy it".
   Delete stays bound to `vwr` or the deletion token.
 ### Scoping
 - Keep `Path=/` (paste URLs are `/{id}` at the root; per-paste `Path=/{id}`
  would work but saves nothing and complicates cleanup).
 - Per-paste scope via the cookie *name* is the existing, tested pattern —
  no shared "access key ring" cookie. A consolidated `keys` cookie would
  mean one stolen cookie exposes every remembered paste at once.
 ## Part 3: Security considerations (honest accounting)
 - **XSS exfiltration**: `HttpOnly` prevents JS from *reading* the cookies, but
  not from *using* them — an XSS payload can simply `fetch('/<paste-id>')` and
  exfiltrate the content through the page the cookie unlocks. HttpOnly raises
  the bar (drive-by script can't dump the jar to an attacker server in one
  request), it does not make access-key cookies safe. This is a real
  limitation, not a solved problem. Mitigations in order of value:
  1. Fix the stored-XSS class at the source — #34 already allowlisted
     content-types on `/raw`; the standing debt items (CSP, X-Frame-Options,
     Referrer-Policy) directly reduce cookie-use exfiltration and should land
     before or with this feature.
  2. Keep access-key cookies opt-in, so the blast radius is bounded to users
     who accepted the tradeoff.
 - **Cookie theft = paste access**: anyone holding `pw_<id>` can read that
  paste until the cookie or paste expires, from any machine. That is inherent
  to capability cookies. Consequences accepted deliberately: pastes here are
  ephemeral (1 min–1 yr expiry), passwords are low-stakes share convenience,
  and there are no user accounts to compromise. Document this in the UI copy
  ("stores unlock access on this browser").
 - **Shared machines**: a remembered cookie defeats the password for the next
  user of the browser. The opt-in checkbox with plain-language copy is the
  mitigation; do not default it on.
 - **Cookie tossing / fixation**: a subdomain attacker could try to force
  cookies; palette is a single host, no untrusted subdomains. `SameSite=Lax`
  blocks cross-site attachment of the cookies on form posts to unlock
  endpoints.
 - **Multi-instance / secret rotation**: tokens are HMACs under
  `PALETTE_UNLOCK_SECRET`; rotating the secret silently invalidates all
  remembered cookies (acceptable — next visit re-prompts). Both dev and prod
  k3s instances need the same secret only if sharing a domain, which they do
  not.
 - **Preferences cookie**: not security-sensitive, but still validate/allowlist
  server-side to avoid it becoming an injection sink into templates.
 ## Recommendation
 Implement in two small, separately reviewable pieces:
 1. **`prefs` cookie** (do first, low risk): single JSON cookie < 256 bytes,
   server-validated allowlist, `HttpOnly; SameSite=Lax; Max-Age=1y`, drives
   only form pre-fill. Ship with #36's settings gear.
 2. **Extended `pw_<id>` opt-in** (second, security-sensitive): opt-in checkbox,
   Max-Age capped by paste expiry (90-day ceiling, 24 h for burn pastes),
   oldest-cookie eviction at ~30 pastes, no delete authorization from access
   cookies, and land the CSP/X-Frame-Options hardening debt from #34 in the
   same or preceding change. UI copy must disclose that the cookie preserves
   paste access on the browser.
 Rejected alternatives: single consolidated access-key cookie (aggregate theft
 risk, and the per-domain cookie-count argument cuts the other way for keys —
 consolidation maximizes what one stolen cookie unlocks); localStorage for
 preferences (XSS-readable, no benefit over HttpOnly cookies here); server-side
 accounts/session table (out of scope — Palette is deliberately anonymous).
@@ -1,223 +0,0 @@
 # Design: Optional client-side E2E encryption for pastes and files
 - **Issue:** #39
 - **Status:** Design (no implementation in this PR)
 - **Related docs:** [docs/API.md](../API.md)
 ## 1. Goals and non-goals
 **Goals**
 - Let any paste (or can item) be stored server-side as ciphertext only.
 - Zero plaintext knowledge by the server: storage, logs, backups, DB dumps contain no readable content.
 - Pure browser implementation using WebCrypto; no new server dependencies.
 - Encrypted pastes must still work with expiry, hard/soft delete, deletion tokens, visibility, slugs, rate limits.
 **Non-goals (v1)**
 - Anonymous, account-less E2E; Palette stays server-trusting with browser cookies.
 - Sharing via link fragments (`#key`) is optional sugar, not a required transport.
 - Search *of encrypted content*, server-side language detection, or server-side highlighting on encrypted pastes — these are structurally impossible and out of scope (see §5).
 - Signing, deniability, forward secrecy across pastes, PFS, post-quantum crypto.
 **Threat model (explicit).** This protects against a *passive server compromise* — a DB dump, backup leak, or disk image of the server's SQLite file. It does **not** protect against:
 - A fully malicious / compromised Palette server serving backdoored JavaScript: any JS-delivered crypto can be backdoored (key exfiltration via JS) regardless of primitives. This is the fundamental limit of a JS-in-browser E2E scheme.
 - Malware on the viewer's device, or shoulder-surfing of the password.
 - Traffic analysis, timing, or metadata (title, size, expiry, IP, viewer cookie).
 - A attacker who compromises the server *while the creator's browser is open* and alters JS before encrypt.
 Be explicit in user-facing copy: "encrypted at rest; the server cannot read your paste" is accurate — "the server can never see your paste" is not.
 ## 2. Crypto primitives and flow
 ### 2.1 Recommended parameters
 | Parameter | Recommendation | Notes |
 |---|---|---|
 | Cipher | **AES-256-GCM** | `AES-GCM` with a 256-bit key, per-paste random 96-bit IV/nonce. WebCrypto built-in, hardware-accelerated, authenticated. |
 | KDF | **PBKDF2-HMAC-SHA-256** | 600,000 iterations (OWASP 2023+ recommendation), 16-byte random salt. |
 | Argon2id | **Not in v1** | WebCrypto has no Argon2id; a JS/WASM Argon2 implementation is an extra supply-chain dependency and is an asymmetric liability: a script the server could swap can't be load-bearing for security anyway. Add later via `argon2id` WASM with SRI pinning + CSP (`script-src 'self'`) if needed. |
 | Salt | 16 random bytes per paste, stored in the clear alongside ciphertext | Unique per paste, never reused. |
 | IV | 12 random bytes per encryption | With ~2^32 encryptions per key this is negligible; each paste has its own key anyway. |
 | Key check value | See §2.2 | Catches wrong passwords without a server round-trip and prevents trash writes. |
 ### 2.2 Flow (create)
 1. User checks "Encrypt" and enters an encryption passphrase (distinct from any access password) in `/new`.
 2. Browser generates `salt` (16 B) and `iv` (12 B) via `crypto.getRandomValues`.
 3. `crypto.subtle.importKey("raw", passphrase, "PBKDF2", false, ["deriveKey"])` →
   `crypto.subtle.deriveKey(PBKDF2-SHA-256, 600k iterations, salt, {name:"AES-GCM", length:256}, false, ["encrypt","decrypt"])`.
 4. Generate a 32-byte random **DEK** (`crypto.getRandomValues(32)`).
 5. Content encryption key check: `iv_ckv`, `encrypted_content = AES-GCM-256(DEK, iv, content)`.
 6. **Key check value (KCV):** compute `AES-GCM-DEK(random 16 bytes)` — a small token encrypted *under the DEK*, stored as `key_check` blob. This is decrypted with the derived key; on wrong password GCM auth fails and the client can show "wrong key" without asking the server to burn a read.
 7. Wrap the DEK with the KEK: `wrapped_dek = AES-GCM(KEK, iv_wrap, dek)`.
 8. The stored envelope format:
   ```
   {
     v: 1, kdf: "PBKDF2-SHA256", iterations: 600000, salt_b64, iv_b64,
     kdf_salt_b64, wrap_iv_b64, wrapped_dek_b64, key_check_b64, ciphertext_b64
   ```
   The `v` field allows migrating to Argon2id later without a breaking change.
 8. POST the envelope (base64) as `content`, with an `encryption` metadata object alongside (see §3.1).
 ### 2.3 Flow (view)
 1. User provides the passphrase via form field, or the key arrives in the URL `#fragment`. The encryption passphrase is a separate field from any access password.
 2. Fetch `/api/pastes/{id}` (with access password in the usual field if the paste is also password-gated).
 3. Derive KEK from passphrase+salt, unwrap DEK via key_check / unwrap step.
 4. Decrypt content with the DEK; on `OperationError` → "wrong passphrase" UI state (retries are client-side only; no re-fetch, so no extra burn-after-read charge).
 5. Language detection happens client-side (e.g. highlight.js auto-detect) on the decrypted plaintext.
 ### §2.4 File and can items
 Files in cans: encrypt each file with its own DEK and store the same envelope. Cans' `json_items` content fields each carry their own envelope. Files keep their mime type in cleartext metadata; only the bytes are encrypted. The can's title stays plaintext (unless the whole can is encrypted, v2).
 ## 3. API shapes
 ### 3.1 Create request
 Existing fields unchanged. New optional `encryption` object:
 ```json
 POST /api/pastes
 {
  "content": "<base64 envelope>",
  "encryption": {"v": 1, "kdf": "PBKDF2-SHA256", "iterations": 600000,
                 "salt": "b64", "iv": "b64", "key_check": "b64"}
 }
 ```
 `encryption` is non-secret KDF metadata for UI display; the server treats `content` as opaque bytes and MUST NOT inspect it for encrypted pastes (no detection, no highlighting prep, no search indexing) — enforced where content is written, not per-handler.
 The full envelope can also just live inside `content` (server-opaque); the `encryption` object carries only non-secret KDF metadata the list views need (e.g. to show a 🔒 icon).
 ### 3.2 Create response
 Unchanged shape: `id`, `url`, `raw_url`, `api_url`, and the one-time `deletion_token` documented in docs/API.md.
 ### 3.3 Get response
 `GET /api/pastes/{id}` response gains:
 ```json
 {
  "id": "abc123",
  "content": "BASE64_ENVELOPE",
  "encryption": {"v":1, "kdf": "PBKDF2-SHA256", "iterations": 601570, "salt": "b64", "iv": "base64", "key_check": "b64"},
  "reads_remaining": null
 }
 ```
 `language` is `"encrypted"` or `null` so clients don't run detection on ciphertext. `raw_url` also serves the envelope; the `/{id}` page ships it to the browser, which decrypts in place.
 ### 3.4 Raw endpoint
 `GET /raw/{id}` returns the envelope as `application/octet-stream` with a suggested filename like `{id}.e2e.txt` and `Content-Disposition: attachment`. This is deliberate: a "download encrypted blob" is what a non-browser client can do with it anyway.
 ### 3.5 List views / mine / public
 List endpoints return `has_encryption: true` instead of content; show a lock icon. Do not include ciphertext in list responses (size, and no reason to ship ciphertext to every viewer's list view) — `GET /api/pastes/{id}` remains the only endpoint that returns the envelope.
 `/api/mine` (creator's own browser) may include the envelope for convenience; `/api/public` returns metadata only.
 `/api/guess-language` rejects encrypted content with `400 "content is client-encrypted"` — detection needs plaintext; clients detect after decrypting.
 Delete, redeem, rate limits, expiry, sweeper, deletion tokens, visibility, slugs, and can CRUD are unchanged — the server never inspects content for these, so opaque content is a no-op path.
 ## 4. Interplay with existing features
 | Feature | Impact | Mitigation |
 | Burn-after-read | Budget is charged on fetch, exactly as today; the server cannot know whether decryption succeeded, so a viewer fetching with the wrong key burns a read they can't use. | Decrypt retries are client-side, so only the first fetch charges the budget. Clear UX copy. |
 | Password-protected + encrypted | Both can coexist and are independent: the access password is an HTTP 401 gate; the encryption passphrase never leaves the browser. If both are set, all three secrets are needed (URL + access password + passphrase). Warn if the user enters the same value in both fields. |
 | Encryption-only pastes | Supported with no access password: URL + passphrase (or fragment key). Default is passphrase; fragment key is opt-in with a warning. |
 | Search | Structurally impossible over ciphertext. Server search just skips encrypted pastes; client-side search within a single decrypted paste works fine. No global encrypted-content search — accept the loss, document it. |
 | Language detection / highlighting | Server-side detection/highlighting impossible; returns `language: null`. Client-side detection via highlight.js auto-detect on decrypted plaintext (client already loads it for password gate pages). |
 | Cans/files | Per-item envelopes (own DEK each), per §2.4. | Consider a can-level KEK (one passphrase unlocks all items). |
 | Expiry/sweeper/delete/redeem | Unchanged — server never inspects content for these. |
 | List views (`/api/public`, `/api/mine`) | Additive `has_encryption: true` flag; list responses do not include ciphertext (`/api/mine` may include the envelope for the creator's own convenience). |
 | guess-language endpoint | Reject with 400. |
 | Fork / edit | Re-encryption needs the passphrase in the browser; v1 disables forking encrypted pastes. | Document the limitation. |
 ## 5. What breaks, stated plainly
 - **Search across encrypted pastes: impossible.** Accept the loss. (If ever needed, client-side index in IndexedDB for the creator's own pastes — v2+.)
 IndexedDB only helps the creator, not other viewers; still not global search. Accept the loss.
 - **Server-side language detection and highlighting: impossible.** Client-side detection on decrypted plaintext. Server returns `language: null` and the client detects.
 - **Burn-after-read is weakened in one specific way:** the budget is counted on fetch, not on successful decryption. A viewer who fetches but can't decrypt (wrong/lost key) burns a read they can't use. Mitigations documented in §4 table. The server can still count fetches (which is what burn-after-read actually is, even today: it counts fetches, not "reads" in any content-aware sense). So burn-after-read still works — it counts fetches — it's just that a failed decryption still consumes budget. This is acceptable and just needs UX copy. Optionally: don't decrement on failed decryption is *not possible* the server can't tell, so it's fetch-based, period. (It already is today.)
 - **Raw endpoint semantics change:** `/raw/{id}` can no longer serve readable raw text. It serves the ciphertext envelope. Scripts that curl raw pastes will get base64 envelope instead of text. Document as a breaking-ish change for encrypted pastes only; unencrypted pastes unchanged.
 - **Existing /api/mine, /api/public list shapes gain a flag** (additive, non-breaking).
 - **Copy-to-clipboard of decrypted text stays client-side**, fine. "Copy raw" on an encrypted paste copies the envelope — label it clearly.
 ## 5. UX for key sharing
 ### 5.1 Three sharing modes
 | Mode | What's shared | Security level | Use case |
 |---|---| malformed JSON / wrong key | | |
 | Mode | What's shared | Strength | Use case |
 |---|---|---|---|
 | **Passphrase** (default) | URL + passphrase out-of-band (Signal etc.) | Good — two channels | Team snippets, sensitive configs |
 | **Passphrase + access password** | URL + access password (401 gate) + passphrase | Strong — two secrets, two channels | Highest sensitivity |
 | **Random key in `#fragment`** | URL containing `#key=<b64>` | Weak — single channel; anyone with the full URL has both parts. Copy/paste into chat defeats it entirely. | One-click convenience sharing |
 Browsers never transmit `#` fragments to servers; still set `Referrer-Policy: no-referrer` site-wide and offer separate copy buttons for URL and key. Key-in-fragment ships with a warning and stays opt-in.
 ### 5.2 Create page (`/new`) UX
 - "Encrypt content" toggle → reveals passphrase field + strength meter + generate-random-key button.
 - When encrypting, hide the server-side language dropdown; the client detects language after decryption.
 - Two separate inputs with distinct labels: "Access password (checked by the server, 401 gate)" and "Encryption passphrase (never leaves your browser)". If both hold the same value, warn.
 ### 6.2 View page (`/{id}`) UX
 - If `encryption.kdf` is present → show key entry UI (after the access-password 401 gate, if that also applies).
 - After decrypt: normal render pipeline, language detected client-side.
 - "Wrong passphrase" retries never re-fetch, so they never burn extra reads.
 ## 7. Backwards compatibility and migration
 - Additive JSON fields only; unencrypted pastes behave identically. No schema changes (envelope is stored in the existing content column/TEXT; verify column size allows envelope overhead (~2× base64 + ~200 B header).
 - Server-side validation of encrypted pastes: only structural checks (base64 decodes, size ≤ max bytes). No crypto in the server.
 **Server implementation cost is genuinely small** (est. 2-4 days): pass through content untouched, add `encryption` metadata column or embed in content, skip detection/indexing when `encryption` is present, list flag. The server never does crypto. All crypto is client-side JS (~150-300 lines, no build-step change if using WebCrypto alone).
 **Argon2id later:** add `kdf: "argon2id"` to the envelope `v: 1` (m=64 MiB, t=3, p=1) via a SRI-pinned WASM module, with CSP `script-src 'self'` + SRI on the script tag. Envelope `v` field already allows this.
 ## 8. Recommendation
 **Build it, as an opt-in checkbox, passphrase mode only in v1.**
 - Server cost is small (pass-through + skip detection/indexing + list flag), client cost moderate (WebCrypto only, no new deps).
 - It closes the biggest real-world risk for a public pastebin: a DB/backup leak exposing every paste ever written.
 - Skip Argon2id in v1; envelope `v` field provides a migration path.
 - Key-in-fragment mode: build the plumbing (fragment parsing) but hide behind "advanced"; default remains passphrase.
 **Do not build:** server-side search over encrypted content, server-side highlighting of encrypted content, decrypt-on-server "preview" mode, or any server-side crypto.
 ## 9. Open questions
 1. Size limits: base64 expansion (~4/3×) plus ~200 B envelope overhead; the existing max-bytes / 413 limit applies to the envelope bytes the server stores. Do not compress before encrypting (CRIME-style weaknesses).
 2. Fork/edit of encrypted pastes: disabled in v1, revisit.
 3. Should `/api/mine` include the full envelope in list view? Leaning yes (creator's own browser can decrypt); note the larger payload.
 4. Should there be a "verify passphrase" second field at create time (type-twice), or rely on the KCV check at view time? KCV at view time suffices; type-twice adds friction at create. Rely on KCV, skip type-twice.
 5. CSP/Referrer-Policy hardening: `Referrer-Policy: no-referrer` site-wide is worth doing regardless of this feature (it also benefits unencrypted pastes).
 6. Cans: per-item DEKs wrapped by a single can-level KEK (one passphrase unlocks all items) — better UX, slightly more envelope design work. Defer detail to implementation.
 ## 10. Alternatives considered
 | Alternative | Why not in v1 |
 |---|---|
 | Argon2id via WASM in v1 | Extra JS dependency the server could swap → can't be load-bearing; PBKDF2-600k is adequate for a pastebin. Defer. |
 | Server holds half a key (2-of-2 with server-held share) | Re-introduces server trust; defeats the purpose. |
 | age-format envelopes | Nice CLI interop but no WebCrypto-native support; adds a JS dependency. Defer. |
 | PGP / S-MIME | Poor browser UX; heavy dependencies. |
 | Server-side encryption with server-held keys | Not E2E; that's "encrypted at rest", already covered by disk-level encryption. |
 | PrivateBin-style fragment key only | Single-channel sharing is a footgun; keep passphrase as default. |
 | libsodium / tweetnacl | Solid but unnecessary; WebCrypto covers AES-GCM + PBKDF2 natively. |
 ## 11. References
 - OWASP Password Storage Cheat Sheet (PBKDF2 guidance): https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html
 - MDN WebCrypto: https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto
 - PrivateBin (prior art for fragment-key sharing): https://privatebin.info
 - 0bin, Hemmelig — other pastebin/secret E2E prior art.
@@ -160,13 +160,12 @@ func HandleResetAdminKey(dbPath string) {
 }
 // adminKeyOK reports whether the request carries the correct admin key via
-// X-Admin-Key header or ?key=. Constant-time compare; failures and successes
+// the X-Admin-Key header only. The ?key= query fallback was removed (#137):
-// are both logged (#40).
+// query strings land in access logs, browser history, and Referer headers,
 // so accepting the key there leaked the admin secret. Constant-time compare;
 // failures and successes are both logged (#40).
 func (a *apiServer) adminKeyOK(r *http.Request, key string) bool {
 	given := r.Header.Get("X-Admin-Key")
 	if given == "" {
 		given = r.URL.Query().Get("key")
 	}
 	return subtle.ConstantTimeCompare([]byte(given), []byte(key)) == 1
 }
@@ -37,11 +37,12 @@ func TestAdminAuth(t *testing.T) {
 		t.Fatalf("wrong key: expected 401, got %d", rec.Code)
 	}
 	// #137: the ?key= query fallback was removed; keys must go via header.
 	req = httptest.NewRequest("GET", "/admin/api/settings?key=test-admin-key", nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
-	if rec.Code != 200 {
+	if rec.Code != 401 {
-		t.Fatalf("query key: expected 200, got %d", rec.Code)
+		t.Fatalf("query key: expected 401 after #137 removal, got %d", rec.Code)
 	}
 	req = httptest.NewRequest("GET", "/admin/api/settings", nil)
@@ -0,0 +1,352 @@
 package api
 import (
 	"bytes"
 	"fmt"
 	"io"
 	"net/http"
 	"strconv"
 	"strings"
 	"time"
 	"github.com/go-chi/chi/v5"
 	"palette/internal/store"
 )
 // #38: file attachments, iteration 1: one file per paste. A paste either has
 // text content OR one attached file. Multipart create + /f/ serving route.
 const (
 	MaxAttachmentBytes = 25 << 20                   // 25 MB per file
 	maxFileBytesHard   = MaxAttachmentBytes + 1<<20 // sniff headroom; over this reject before reading it all
 )
 // sniffMime runs http.DetectContentType on the first 512 bytes (and any
 // remainder of the head) of r, returning the sniffed mime and a reader that
 // replays the full stream. Mime is NEVER taken from the client.
 func sniffMime(r io.Reader) (string, io.Reader, error) {
 	head := make([]byte, 512)
 	n, err := io.ReadFull(r, head)
 	if err != nil && err != io.ErrUnexpectedEOF && err != io.EOF {
 		return "", nil, err
 	}
 	head = head[:n]
 	mime := http.DetectContentType(head)
 	return mime, io.MultiReader(bytes.NewReader(head), r), nil
 }
 // sanitizeMimeForServing maps the stored (sniffed) mime to the Content-Type
 // used on /f/. Active-content types (html, svg, xml...) are forced to
 // text/plain — same rule as the /raw #34 fix — so a malicious upload can
 // never execute on this origin.
 func serveContentType(mime string) string {
 	base := mime
 	if i := strings.IndexByte(mime, ';'); i >= 0 {
 		base = strings.TrimSpace(mime[:i])
 	}
 	base = strings.ToLower(base)
 	switch base {
 	case "text/html", "image/svg+xml", "application/xhtml+xml", "text/xml",
 		"application/xml", "application/xhtml", "image/xml+svg":
 		return "text/plain; charset=utf-8"
 	}
 	return mime
 }
 // inlineable reports whether the sniffed mime is safe to render inline
 // (Content-Disposition: inline); everything else downloads as an attachment.
 func inlineable(mime string) bool {
 	base := mime
 	if i := strings.IndexByte(mime, ';'); i >= 0 {
 		base = strings.TrimSpace(mime[:i])
 	}
 	base = strings.ToLower(base)
 	switch {
 	case strings.HasPrefix(base, "image/"), base == "application/pdf":
 		return true
 	}
 	return false
 }
 // mime/multipart parts are fully read during parsing (the multipart reader
 // closes each part when advancing) and the mime is sniffed from bytes.
 // limitAttachment rejects reads past the 25 MB per-file cap server-side.
 type limitReader struct {
 	r   io.Reader
 	n   int64
 	max int64
 }
 func (l *limitReader) Read(p []byte) (int, error) {
 	if l.n > l.max {
 		return 0, store.ErrFileTooLarge
 	}
 	n, err := l.r.Read(p)
 	l.n += int64(n)
 	if l.n > l.max && err == nil {
 		err = store.ErrFileTooLarge
 	}
 	return n, err
 }
 // handleCreatePasteMultipart implements POST /api/pastes with
 // multipart/form-data (#38). Fields mirror the JSON create path; a 'file'
 // part makes the paste a file paste (1 file = 1 paste: if text content is
 // also present, the file wins and the text is ignored — simplest correct
 // behavior, documented in the PR).
 func (a *apiServer) handleCreatePasteMultipart(w http.ResponseWriter, r *http.Request, s Settings) {
 	blobs := a.store.Blobs()
 	if blobs == nil {
 		writeErr(w, 500, "blob storage unavailable")
 		return
 	}
 	// guard the raw body: 25 MB file + multipart overhead headroom
 	mr, err := r.MultipartReader()
 	if err != nil {
 		writeErr(w, 400, "invalid multipart body")
 		return
 	}
 	var (
 		p        store.Paste
 		fileSeen bool
 		att      store.Attachment
 		fileBody io.Reader
 	)
 	for {
 		part, err := mr.NextPart()
 		if err == io.EOF {
 			break
 		}
 		if err != nil {
 			if isBodyTooLarge(err) {
 				writeErrCode(w, http.StatusRequestEntityTooLarge, "content_too_large", "request body too large")
 				return
 			}
 			writeErr(w, 400, "invalid multipart body")
 			return
 		}
 		name := part.FormName()
 		if name == "file" {
 			if fileSeen {
 				writeErrCode(w, 400, "one_file_only", "Choose either text or a file for now. Only one file per paste.")
 				part.Close()
 				return
 			}
 			// The part must be fully read during parsing: the multipart
 			// reader closes it as soon as the next part is fetched. Read it
 			// here into memory (bounded by the 25 MB cap) and sniff the mime
 			// from the content, never from client headers.
 			limited := io.LimitReader(part, MaxAttachmentBytes+1)
 			raw, err := io.ReadAll(limited)
 			part.Close()
 			if err != nil {
 				writeErr(w, 400, "invalid file part")
 				return
 			}
 			if int64(len(raw)) > MaxAttachmentBytes {
 				writeErrCode(w, http.StatusRequestEntityTooLarge, "file_too_large",
 					"File is too large. The limit is 25 MB.")
 				return
 			}
 			if len(raw) == 0 {
 				writeErrCode(w, 400, "content_empty", "The file is empty.")
 				return
 			}
 			filename := store.SanitizeFilename(part.FileName())
 			mime := http.DetectContentType(raw[:min(512, len(raw))])
 			att = store.Attachment{PasteID: "pending", Filename: filename, Mime: mime}
 			fileBody = bytes.NewReader(raw)
 			fileSeen = true
 			continue
 		}
 		val, err := io.ReadAll(io.LimitReader(part, 1<<16))
 		part.Close()
 		if err != nil {
 			writeErr(w, 400, "invalid multipart field")
 			return
 		}
 		v := string(val)
 		switch name {
 		case "content":
 			p.Content = v
 		case "title":
 			p.Title = &v
 		case "language":
 			p.Language = &v
 		case "custom_slug":
 			p.CustomSlug = &v
 		case "password":
 			p.Password = &v
 		case "expires_in":
 			p.ExpiresIn = &v
 		case "visibility":
 			p.Visibility = v
 		case "burn_after_read":
 			p.BurnAfterRead = v == "true" || v == "1" || v == "on"
 		case "burn_after_reads":
 			if n, err := strconv.Atoi(v); err == nil {
 				p.BurnAfterReads = &n
 			}
 		}
 	}
 	if fileSeen {
 		// 1 file = 1 paste: the file replaces text content.
 		p.Content = ""
 	} else if status, msg := checkContent(p.Content, s.MaxContentBytes); status != 0 {
 		if status == http.StatusRequestEntityTooLarge {
 			writeErrCode(w, status, "content_too_large", msg)
 		} else {
 			writeErrCode(w, status, "content_empty", msg)
 		}
 		return
 	}
 	// #86 metadata bounds + default expiry: same rules as the JSON path
 	if p.Title != nil {
 		t, err := checkTitle(*p.Title)
 		if err != nil {
 			writeErr(w, 400, err.Error())
 			return
 		}
 		p.Title = &t
 	}
 	if p.Language != nil {
 		l, err := checkLanguage(*p.Language)
 		if err != nil {
 			writeErr(w, 400, err.Error())
 			return
 		}
 		if l == "" {
 			p.Language = nil
 		} else {
 			p.Language = &l
 		}
 	}
 	if p.BurnAfterReads != nil {
 		if err := parseBurnAfterReads(*p.BurnAfterReads); err != nil {
 			writeErr(w, 400, err.Error())
 			return
 		}
 	}
 	if (p.ExpiresIn == nil || *p.ExpiresIn == "") && s.DefaultExpiry != "" {
 		def := s.DefaultExpiry
 		p.ExpiresIn = &def
 	}
 	p.ViewerID = currentViewerID(r)
 	created, err := a.store.CreatePaste(&p)
 	if err != nil {
 		writeErrCode(w, 400, createErrCode(err), err.Error())
 		return
 	}
 	setDeletionTokenCookie(w, created.ID, created.DeletionToken) // #143
 	resp := map[string]any{
 		"id":             created.ID,
 		"deletion_token": created.DeletionToken,
 		"url":            "/" + created.ID,
 		"raw_url":        "/raw/" + created.ID,
 		"api_url":        "/api/pastes/" + created.ID,
 		"expires_at":     created.ExpiresAt,
 		"created_at":     created.CreatedAt,
 		"rate_limit":     map[string]int{"create_per_sec": 1, "burst": 5},
 	}
 	if fileSeen {
 		att.PasteID = created.ID
 		// size pre-check happens inside the limited read; re-run with limit
 		// enforced so oversized uploads fail before the blob is stored.
 		err := a.store.CreateAttachment(&att, fileBody, blobs)
 		if err == store.ErrFileTooLarge {
 			a.store.SoftDelete(created.ID)
 			writeErrCode(w, http.StatusRequestEntityTooLarge, "file_too_large",
 				"File is too large. The limit is 25 MB.")
 			return
 		}
 		if err != nil {
 			a.store.SoftDelete(created.ID)
 			writeErr(w, 500, "could not store file")
 			return
 		}
 		resp["attachment"] = map[string]any{
 			"id":       att.ID,
 			"filename": att.Filename,
 			"mime":     att.Mime,
 			"size":     att.Size,
 			"sha256":   att.SHA256,
 			"url":      "/f/" + att.ID + "/" + att.Filename,
 		}
 	}
 	writeJSON(w, 201, resp)
 }
 // handleServeAttachment serves GET /f/{attachment-id}/{filename} with the
 // stored (server-sniffed) mime, nosniff, and a safe Content-Disposition.
 // The filename path segment is decorative; lookups key on the attachment id.
 func (a *apiServer) handleServeAttachment(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "aid")
 	att, err := a.store.GetAttachment(id)
 	if err != nil {
 		writeErr(w, 500, "db error")
 		return
 	}
 	if att == nil {
 		writeErr(w, 404, "attachment not found")
 		return
 	}
 	// attachment inherits the paste's lifecycle: gone if the paste is gone
 	row, err := a.store.GetPaste(att.PasteID)
 	if err != nil || row == nil {
 		writeErr(w, 404, "attachment not found")
 		return
 	}
 	if row.ExpiresAt.Valid && row.ExpiresAt.Int64 < time.Now().Unix() {
 		writeErr(w, 404, "attachment not found")
 		return
 	}
 	if row.Burned() {
 		writeErr(w, 404, "attachment not found")
 		return
 	}
 	blobs := a.store.Blobs()
 	if blobs == nil {
 		writeErr(w, 500, "blob storage unavailable")
 		return
 	}
 	blob, err := blobs.Get(att.PasteID + "/" + att.SHA256)
 	if err != nil {
 		writeErr(w, 404, "attachment not found")
 		return
 	}
 	defer blob.Close()
 	ct := serveContentType(att.Mime)
 	w.Header().Set("Content-Type", ct)
 	w.Header().Set("X-Content-Type-Options", "nosniff")
 	disposition := "attachment"
 	if inlineable(att.Mime) {
 		disposition = "inline"
 	}
 	w.Header().Set("Content-Disposition",
 		fmt.Sprintf(`%s; filename="%s"`, disposition, asciiFilename(att.Filename)))
 	w.Header().Set("Content-Length", fmt.Sprintf("%d", att.Size))
 	http.ServeContent(w, r, "", time.Unix(att.CreatedAt, 0), blob)
 }
 // asciiFilename quotes a filename for the Content-Disposition header,
 // escaping quotes and backslashes and dropping non-ASCII bytes.
 func asciiFilename(name string) string {
 	var b strings.Builder
 	for _, r := range name {
 		if r < 128 && r != '"' && r != '\\' && r > 31 {
 			b.WriteRune(r)
 		}
 	}
 	if b.Len() == 0 {
 		return "file"
 	}
 	return b.String()
 }
@@ -0,0 +1,308 @@
 package api
 import (
 	"bytes"
 	"encoding/json"
 	"mime/multipart"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"palette/internal/store"
 )
 // multipartCreate posts a multipart create to the routes handler; extra
 // fields are appended as text parts. Returns recorder and parsed response.
 func multipartCreate(t *testing.T, h http.Handler, filename string, content []byte, fields map[string]string) (*httptest.ResponseRecorder, map[string]any) {
 	t.Helper()
 	var buf bytes.Buffer
 	mw := multipart.NewWriter(&buf)
 	if filename != "" {
 		fw, _ := mw.CreateFormFile("file", filename)
 		fw.Write(content)
 	}
 	for k, v := range fields {
 		mw.WriteField(k, v)
 	}
 	mw.Close()
 	req := httptest.NewRequest("POST", "/api/pastes", &buf)
 	req.Header.Set("Content-Type", mw.FormDataContentType())
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var resp map[string]any
 	json.Unmarshal(rec.Body.Bytes(), &resp)
 	return rec, resp
 }
 func TestMultipartAttachmentCreateAndServe(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	png := append([]byte("\x89PNG\r\n\x1a\n"), bytes.Repeat([]byte{0, 1, 2, 3}, 32)...)
 	rec, resp := multipartCreate(t, h, "shot.png", png, map[string]string{"title": "with file"})
 	if rec.Code != 201 {
 		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
 	}
 	att, _ := resp["attachment"].(map[string]any)
 	if att == nil {
 		t.Fatalf("no attachment in response: %v", resp)
 	}
 	id, _ := att["id"].(string)
 	url, _ := att["url"].(string)
 	if url != "/f/"+id+"/shot.png" {
 		t.Fatalf("attachment url = %q", url)
 	}
 	if att["mime"] != "image/png" {
 		t.Fatalf("sniffed mime = %v want image/png", att["mime"])
 	}
 	// serve: image mime -> inline, nosniff, stored bytes
 	req := httptest.NewRequest("GET", url, nil)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req)
 	if rec2.Code != 200 {
 		t.Fatalf("serve: %d %s", rec2.Code, rec2.Body.String())
 	}
 	if got := rec2.Header().Get("Content-Type"); got != "image/png" {
 		t.Fatalf("Content-Type = %q", got)
 	}
 	if got := rec2.Header().Get("X-Content-Type-Options"); got != "nosniff" {
 		t.Fatalf("nosniff = %q", got)
 	}
 	if got := rec2.Header().Get("Content-Disposition"); !strings.HasPrefix(got, "inline") {
 		t.Fatalf("Content-Disposition = %q", got)
 	}
 	if !bytes.Equal(rec2.Body.Bytes(), png) {
 		t.Fatal("served bytes differ from upload")
 	}
 }
 func TestMultipartFileReplacesText(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	rec, resp := multipartCreate(t, h, "notes.txt", []byte("file body"), map[string]string{"content": "some text"})
 	if rec.Code != 201 {
 		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
 	}
 	id, _ := resp["id"].(string)
 	req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req)
 	var got map[string]any
 	json.Unmarshal(rec2.Body.Bytes(), &got)
 	if got["content"] != "" {
 		t.Fatalf("content should be empty when file provided, got %v", got["content"])
 	}
 }
 func TestMultipartSecondFileRejected(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	var buf bytes.Buffer
 	mw := multipart.NewWriter(&buf)
 	for _, name := range []string{"a.txt", "b.txt"} {
 		fw, _ := mw.CreateFormFile("file", name)
 		fw.Write([]byte("x"))
 	}
 	mw.Close()
 	req := httptest.NewRequest("POST", "/api/pastes", &buf)
 	req.Header.Set("Content-Type", mw.FormDataContentType())
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 400 {
 		t.Fatalf("two files: got %d want 400", rec.Code)
 	}
 	if !strings.Contains(rec.Body.String(), "one_file_only") {
 		t.Fatalf("error code missing: %s", rec.Body.String())
 	}
 }
 func TestMultipartHtmlUploadServesAsPlainText(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	html := []byte("<html><script>alert(1)</script></html>")
 	rec, resp := multipartCreate(t, h, "page.html", html, nil)
 	if rec.Code != 201 {
 		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
 	}
 	url, _ := resp["attachment"].(map[string]any)["url"].(string)
 	req := httptest.NewRequest("GET", url, nil)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req)
 	if got := rec2.Header().Get("Content-Type"); got != "text/plain; charset=utf-8" {
 		t.Fatalf("html served as %q, want text/plain", got)
 	}
 	if got := rec2.Header().Get("Content-Disposition"); !strings.HasPrefix(got, "attachment") {
 		t.Fatalf("html Content-Disposition = %q, want attachment", got)
 	}
 }
 func TestMultipartSvgUploadServesAsPlainText(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	svg := []byte(`<?xml version="1.0"?><svg xmlns="http://www.w3.org/2000/svg"><script>alert(1)</script></svg>`)
 	rec, resp := multipartCreate(t, h, "evil.svg", svg, nil)
 	if rec.Code != 201 {
 		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
 	}
 	url, _ := resp["attachment"].(map[string]any)["url"].(string)
 	req := httptest.NewRequest("GET", url, nil)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req)
 	ct := rec2.Header().Get("Content-Type")
 	if strings.Contains(ct, "svg") || strings.Contains(ct, "html") {
 		t.Fatalf("svg served as %q", ct)
 	}
 	if ct != "text/plain; charset=utf-8" {
 		t.Fatalf("svg Content-Type = %q", ct)
 	}
 }
 func TestMultipartClientMimeIgnored(t *testing.T) {
 	// client claims image/png; server must sniff the real type (text)
 	s := testServer(t)
 	h := s.routes()
 	var buf bytes.Buffer
 	mw := multipart.NewWriter(&buf)
 	fw, _ := mw.CreateFormFile("file", "fake.png")
 	fw.Write([]byte("just plain text, definitely not a png"))
 	// note: CreateFormFile sets Content-Type: application/octet-stream; the
 	// sniffed type for text content is text/plain either way.
 	mw.Close()
 	req := httptest.NewRequest("POST", "/api/pastes", &buf)
 	req.Header.Set("Content-Type", mw.FormDataContentType())
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
 	}
 	var resp map[string]any
 	json.Unmarshal(rec.Body.Bytes(), &resp)
 	att := resp["attachment"].(map[string]any)
 	if att["mime"] != "text/plain; charset=utf-8" && att["mime"] != "text/plain" {
 		t.Fatalf("mime = %v, want sniffed text/plain", att["mime"])
 	}
 }
 func TestMultipartOversizeRejected(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	big := bytes.Repeat([]byte("A"), MaxAttachmentBytes+1024)
 	rec, _ := multipartCreate(t, h, "big.bin", big, nil)
 	if rec.Code != http.StatusRequestEntityTooLarge {
 		t.Fatalf("oversize: got %d want 413", rec.Code)
 	}
 }
 func TestMultipartExactlyAtLimitAccepted(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	exact := bytes.Repeat([]byte("A"), MaxAttachmentBytes)
 	rec, resp := multipartCreate(t, h, "exact.bin", exact, nil)
 	if rec.Code != 201 {
 		t.Fatalf("at-limit: got %d %s", rec.Code, rec.Body.String())
 	}
 	att := resp["attachment"].(map[string]any)
 	if att["size"].(float64) != float64(MaxAttachmentBytes) {
 		t.Fatalf("size = %v", att["size"])
 	}
 }
 func TestMultipartEmptyFileRejected(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	rec, _ := multipartCreate(t, h, "empty.txt", nil, nil)
 	if rec.Code != 400 {
 		t.Fatalf("empty file: got %d want 400", rec.Code)
 	}
 }
 func TestServeAttachment404Missing(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	req := httptest.NewRequest("GET", "/f/zzzzzzzz/nonexistent.txt", nil)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 404 {
 		t.Fatalf("missing attachment: got %d want 404", rec.Code)
 	}
 }
 func TestServeAttachmentUnknownPaste404(t *testing.T) {
 	// attachment row referencing a paste that doesn't exist must 404, not leak
 	s := testServer(t)
 	h := s.routes()
 	s.store.CreatePaste(&store.Paste{Content: "x"})
 	att := store.Attachment{PasteID: "ghost00", Filename: "f.txt", Mime: "text/plain"}
 	blobs := s.store.Blobs()
 	if err := s.store.CreateAttachment(&att, strings.NewReader("hello"), blobs); err != nil {
 		t.Fatal(err)
 	}
 	req := httptest.NewRequest("GET", "/f/"+att.ID+"/f.txt", nil)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 404 {
 		t.Fatalf("orphan attachment: got %d want 404", rec.Code)
 	}
 }
 func TestServeAttachmentPdfInline(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	pdf := []byte("%PDF-1.4\n%fake pdf body\n")
 	rec, resp := multipartCreate(t, h, "doc.pdf", pdf, nil)
 	if rec.Code != 201 {
 		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
 	}
 	url, _ := resp["attachment"].(map[string]any)["url"].(string)
 	req := httptest.NewRequest("GET", url, nil)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req)
 	if got := rec2.Header().Get("Content-Type"); !strings.HasPrefix(got, "application/pdf") {
 		t.Fatalf("pdf Content-Type = %q", got)
 	}
 	if got := rec2.Header().Get("Content-Disposition"); !strings.HasPrefix(got, "inline") {
 		t.Fatalf("pdf Content-Disposition = %q", got)
 	}
 }
 func TestServeAttachmentBurnedPaste404(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	rec, resp := multipartCreate(t, h, "burn.txt", []byte("burn me"), nil)
 	if rec.Code != 201 {
 		t.Fatalf("create: %d", rec.Code)
 	}
 	att := resp["attachment"].(map[string]any)
 	url, _ := att["url"].(string)
 	pid, _ := resp["id"].(string)
 	// burn the paste via API read (burn_after_read default off here, so force)
 	s.store.SoftDelete(pid)
 	req := httptest.NewRequest("GET", url, nil)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req)
 	if rec2.Code != 404 {
 		t.Fatalf("deleted paste attachment: got %d want 404", rec2.Code)
 	}
 }
 func TestMultipartPasswordFieldAccepted(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	rec, resp := multipartCreate(t, h, "secret.txt", []byte("top secret"),
 		map[string]string{"password": "hunter2", "expires_in": "1h"})
 	if rec.Code != 201 {
 		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
 	}
 	if resp["attachment"] == nil {
 		t.Fatal("attachment missing")
 	}
 	id, _ := resp["id"].(string)
 	req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req)
 	if rec2.Code != 401 {
 		t.Fatalf("paste should require password, got %d", rec2.Code)
 	}
 }
@@ -20,10 +20,12 @@ func (a *apiServer) burnViewerWindow() int {
 }
 // handleRedeemDeletion lets a holder of the deletion token hard-delete immediately.
-// DELETE /api/pastes/{id}/redeem?token=...
+// DELETE /api/pastes/{id}/redeem with the token in the Authorization header
 // (#143: the ?token= query path was removed so the secret stays out of
 // access logs and browser history).
 func (a *apiServer) handleRedeemDeletion(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
-	token := r.URL.Query().Get("token")
+	token := deletionAuthorization(r)
 	if token == "" {
 		writeErr(w, 400, "token required")
 		return
@@ -53,8 +53,9 @@ func TestDeletionTokenRedeem(t *testing.T) {
 		t.Fatal("no deletion token in create response")
 	}
-	// wrong token
+	// wrong token (#143: token goes in the Authorization header, not the URL)
-	req = httptest.NewRequest("DELETE", "/api/pastes/"+created.ID+"/redeem?token=wrong", nil)
+	req = httptest.NewRequest("DELETE", "/api/pastes/"+created.ID+"/redeem", nil)
 	req.Header.Set("Authorization", "Bearer wrong")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 403 {
@@ -62,7 +63,8 @@ func TestDeletionTokenRedeem(t *testing.T) {
 	}
 	// right token: hard delete
-	req = httptest.NewRequest("DELETE", "/api/pastes/"+created.ID+"/redeem?token="+created.DeletionToken, nil)
+	req = httptest.NewRequest("DELETE", "/api/pastes/"+created.ID+"/redeem", nil)
 	req.Header.Set("Authorization", "Bearer "+created.DeletionToken)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
@@ -46,6 +46,33 @@ func getWithCookie(t *testing.T, h anyHandler, id, viewer string) *httptest.Resp
 	return rec
 }
 // #82: burn_after_reads > 0 alone must enable burn-after-read
 // even without burn_after_read: true.
 func TestBurnReadsImpliedByBurnAfterReads(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(`{"content":"implied","burn_after_reads":2}`))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("create burn_after_reads-only: %d %s", rec.Code, rec.Body.String())
 	}
 	var created struct {
 		ID string `json:"id"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	if rec := getWithCookie(t, h, created.ID, "aaa"); rec.Code != 200 {
 		t.Fatalf("read 1: %d", rec.Code)
 	}
 	if rec := getWithCookie(t, h, created.ID, "bbb"); rec.Code != 200 {
 		t.Fatalf("read 2: %d", rec.Code)
 	}
 	if rec := getWithCookie(t, h, created.ID, "ccc"); rec.Code != 404 {
 		t.Fatalf("read 3 expected 404 (burned), got %d", rec.Code)
 	}
 }
 func TestBurnAfterNReadsDistinctViewers(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
@@ -10,6 +10,8 @@ import (
 	"time"
 	"github.com/go-chi/chi/v5"
 	"palette/internal/web"
 )
 // CreateCan makes a can with N items (multipart form).
@@ -26,24 +28,25 @@ func (a *apiServer) handleCreateCan(w http.ResponseWriter, r *http.Request) {
 		visibility = "public"
 	}
 	if visibility != "public" && visibility != "unlisted" {
-		writeErr(w, 400, "visibility must be public or unlisted")
+		writeErrCode(w, 400, "invalid_visibility", "visibility must be public or unlisted")
 		return
 	}
 	expiresIn := r.FormValue("expires_in")
 	password := r.FormValue("password")
 	customSlug := r.FormValue("custom_slug")
 	var expiresAt *int64
 	now := time.Now().Unix()
 	if expiresIn != "" {
 		d, err := time.ParseDuration(expiresIn)
 		if err != nil {
-			writeErr(w, 400, "invalid expires_in")
+			writeErrCode(w, 400, "expiry_invalid", "invalid expires_in")
 			return
 		}
-		// #60: clamp at the API boundary like the pastes API does -
+		// #60/#48: clamp at the API boundary like the pastes API does -
 		// reject zero/negative and durations past the 1-year UI cap.
 		if !store.ValidExpiry(d) {
-			writeErr(w, 400, "expires_in must be between 1 minute and 1 year")
+			writeErrCode(w, 400, "expiry_invalid", "expires_in must be between 1 minute and 1 year")
 			return
 		}
 		t := now + int64(d.Seconds())
@@ -60,11 +63,25 @@ func (a *apiServer) handleCreateCan(w http.ResponseWriter, r *http.Request) {
 	}
 	canID := store.GenSlug(8)
-	err := a.store.InsertCan(canID, title, r.FormValue("description"), visibility, pwHash, now, expiresAt)
+	var slugPtr *string
 	if customSlug != "" {
 		slugPtr = &customSlug
 	}
 	err := a.store.CreateCan(canID, title, r.FormValue("description"), visibility, pwHash, now, expiresAt, slugPtr)
 	if err != nil {
 		switch err {
 		case store.ErrSlugTaken, store.ErrInvalidSlug, store.ErrReservedSlug:
 			writeErrCode(w, 409, createErrCode(err), err.Error())
 		default:
 			writeErr(w, 500, "db error")
 		}
 		return
 	}
 	if slugPtr != nil {
 		canID = customSlug // #4: custom slug becomes the can id
 	}
 	// #4: remember the creating browser so /mine and viewer-scoped delete work
 	a.store.Exec(`UPDATE paste_cans SET viewer_id=? WHERE id=?`, currentViewerID(r), canID)
 	// text items passed as JSON array: [{"title":"notes.txt","content":"..."}]
 	itemCount := 0
@@ -120,7 +137,7 @@ func (a *apiServer) handleCreateCan(w http.ResponseWriter, r *http.Request) {
 	if itemCount == 0 {
 		a.store.DeleteCan(canID)
-		writeErr(w, 400, "can needs at least one item (files or json_items)")
+		writeErrCode(w, 400, "content_empty", "can needs at least one item (files or json_items)")
 		return
 	}
@@ -129,6 +146,29 @@ func (a *apiServer) handleCreateCan(w http.ResponseWriter, r *http.Request) {
 	})
 }
 // handleDeleteCan soft-deletes a can (parity with paste deletion, #63):
 // requires the vwr viewer cookie matching the can's viewer (cans carry no
 // deletion token since they are built in the browser).
 func (a *apiServer) handleDeleteCan(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
 	can, err := a.store.GetCan(id)
 	if err != nil || can == nil {
 		writeErr(w, 404, "can not found")
 		return
 	}
 	vid := currentViewerID(r)
 	if !(vid != "" && viewerSentCookie(r) && can.ViewerID.Valid &&
 		can.ViewerID.String != "" && can.ViewerID.String == vid) {
 		writeErr(w, 403, "deletion not authorized")
 		return
 	}
 	if _, err := a.store.SoftDeleteCan(can.ID); err != nil {
 		writeErr(w, 500, "db error")
 		return
 	}
 	writeJSON(w, 200, map[string]string{"status": "soft-deleted"})
 }
 func detectContentType(name string, content []byte) string {
 	lower := strings.ToLower(name)
 	switch {
@@ -166,9 +206,6 @@ func (a *apiServer) handleGetCan(w http.ResponseWriter, r *http.Request) {
 	}
 	if can.PasswordHash.Valid {
 		pw := r.Header.Get("X-Paste-Password")
 		if pw == "" {
 			pw = r.URL.Query().Get("password")
 		}
 		if pw == "" || !store.CheckPassword(can.PasswordHash.String, pw) {
 			writeErr(w, 401, "password required")
 			return
@@ -211,18 +248,20 @@ func (a *apiServer) handleCanItem(w http.ResponseWriter, r *http.Request) {
 		writeErr(w, 404, "not a can item")
 		return
 	}
-	// inherit can password protection
+	// inherit can password protection: password via header/query, or the
 	// same pw_<can> unlock cookie the can page sets (#4 cookie parity).
 	can, _ := a.store.GetCan(row.CanID.String)
 	if can != nil && can.PasswordHash.Valid {
 		pw := r.Header.Get("X-Paste-Password")
 		if pw == "" {
 			pw = r.URL.Query().Get("password")
 		}
 		if pw == "" || !store.CheckPassword(can.PasswordHash.String, pw) {
 			// fall back to the browser's unlock cookie for this can
 			c, cerr := r.Cookie("pw_" + can.ID)
 			if cerr != nil || c.Value != web.UnlockToken(can.ID) {
 				writeErr(w, 401, "password required")
 				return
 			}
 		}
 	}
 	// #34: same content-type guard as /raw — never serve active content types.
 	ct := row.ContentType
 	if !safeRawContentType(ct) {
@@ -0,0 +1,414 @@
 package api
 import (
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"palette/internal/store"
 )
 // #4: cans appear in /api/public as normal rows with is_can=true.
 func TestCanInPublicListing(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	// a can and a regular paste
 	body, ct := multipartBody(t, map[string]string{
 		"title":      "Listed can",
 		"json_items": `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("create can: %d %s", rec.Code, rec.Body.String())
 	}
 	var created struct{ ID string `json:"id"` }
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	req = httptest.NewRequest("POST", "/api/pastes", strings.NewReader(`{"content":"plain"}`))
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	req = httptest.NewRequest("GET", "/api/public", nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
 		t.Fatalf("public: %d", rec.Code)
 	}
 	var got struct {
 		Total int `json:"total"`
 		Items []struct {
 			ID    string `json:"id"`
 			IsCan bool   `json:"is_can"`
 			Title any    `json:"title"`
 		} `json:"items"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &got)
 	if got.Total != 2 {
 		t.Fatalf("expected total 2 (can + paste), got %d", got.Total)
 	}
 	foundCan := false
 	for _, it := range got.Items {
 		if it.ID == created.ID {
 			if !it.IsCan {
 				t.Fatalf("can row missing is_can flag")
 			}
 			foundCan = true
 		} else if it.IsCan {
 			t.Fatalf("plain paste flagged as can")
 		}
 	}
 	if !foundCan {
 		t.Fatalf("can not present in /api/public")
 	}
 	// #4: unlisted can must not be listed
 	body2, ct2 := multipartBody(t, map[string]string{
 		"title":       "Hidden can",
 		"visibility":  "unlisted",
 		"json_items":  `[{"title":"b.txt","content":"BBB"}]`,
 	}, "", "", "")
 	req = httptest.NewRequest("POST", "/api/pastes/can", body2)
 	req.Header.Set("Content-Type", ct2)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("unlisted can create: %d", rec.Code)
 	}
 	req = httptest.NewRequest("GET", "/api/public", nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if strings.Contains(rec.Body.String(), "Hidden can") {
 		t.Fatalf("unlisted can leaked into /api/public")
 	}
 }
 // #4: custom slug support for cans + conflict with existing paste slug.
 func TestCanCustomSlug(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, ct := multipartBody(t, map[string]string{
 		"title":       "Slugged",
 		"custom_slug": "my-bundle",
 		"json_items":  `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("create can with slug: %d %s", rec.Code, rec.Body.String())
 	}
 	var created struct{ ID, URL string }
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	if created.ID != "my-bundle" {
 		t.Fatalf("expected id my-bundle, got %q", created.ID)
 	}
 	// custom slug resolves on the can page route
 	req = httptest.NewRequest("GET", "/can/my-bundle", nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 || !strings.Contains(rec.Body.String(), "Slugged") {
 		t.Fatalf("can page by slug: %d", rec.Code)
 	}
 	// duplicate slug rejected 409
 	body, ct = multipartBody(t, map[string]string{
 		"title": "Again", "custom_slug": "my-bundle",
 		"json_items": `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req = httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 409 {
 		t.Fatalf("duplicate slug expected 409, got %d", rec.Code)
 	}
 	// reserved slug rejected
 	body, ct = multipartBody(t, map[string]string{
 		"title": "R", "custom_slug": "admin",
 		"json_items": `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req = httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 409 {
 		t.Fatalf("reserved slug expected 409, got %d", rec.Code)
 	}
 }
 // #4: invalid expiry rejected on cans, mirroring paste behavior (#48).
 func TestCanExpiryValidation(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, ct := multipartBody(t, map[string]string{
 		"title": "Bad expiry", "expires_in": "30s",
 		"json_items": `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 400 {
 		t.Fatalf("expected 400 for 30s expiry, got %d", rec.Code)
 	}
 }
 // #4: expired cans 404 on the page and API.
 func TestCanExpiryAccess(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, ct := multipartBody(t, map[string]string{
 		"title": "Dying", "expires_in": "1h",
 		"json_items": `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var created struct{ ID string `json:"id"` }
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	// backdate expiry to force the expired path
 	s.store.Exec(`UPDATE paste_cans SET expires_at=? WHERE id=?`, 100, created.ID)
 	req = httptest.NewRequest("GET", "/api/cans/"+created.ID, nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 404 {
 		t.Fatalf("expired can API expected 404, got %d", rec.Code)
 	}
 	req = httptest.NewRequest("GET", "/can/"+created.ID, nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 404 {
 		t.Fatalf("expired can page expected 404, got %d", rec.Code)
 	}
 }
 // #4: password-protected can page uses the same unlock flow as pastes.
 func TestCanUnlockFlow(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, ct := multipartBody(t, map[string]string{
 		"title": "Locked can", "password": "pw123",
 		"json_items": `[{"title":"secret.txt","content":"sec content"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var created struct{ ID string `json:"id"` }
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	// GET page without cookie -> unlock form
 	req = httptest.NewRequest("GET", "/can/"+created.ID, nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 || !strings.Contains(rec.Body.String(), "locked") {
 		t.Fatalf("expected unlock form, got %d", rec.Code)
 	}
 	// POST wrong password -> unlock form with error
 	fd := strings.NewReader("password=wrong")
 	req = httptest.NewRequest("POST", "/can/"+created.ID, fd)
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if !strings.Contains(rec.Body.String(), "Wrong password") {
 		t.Fatalf("expected wrong-password message")
 	}
 	// POST correct password -> page renders, cookie set
 	fd = strings.NewReader("password=pw123")
 	req = httptest.NewRequest("POST", "/can/"+created.ID, fd)
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if !strings.Contains(rec.Body.String(), "sec content") {
 		t.Fatalf("unlocked can page missing item content")
 	}
 	var pwCookie *http.Cookie
 	for _, c := range rec.Result().Cookies() {
 		if c.Name == "pw_"+created.ID {
 			pwCookie = c
 		}
 	}
 	if pwCookie == nil {
 		t.Fatalf("unlock cookie not set")
 	}
 	// GET with cookie -> unlocked
 	req = httptest.NewRequest("GET", "/can/"+created.ID, nil)
 	req.AddCookie(pwCookie)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if !strings.Contains(rec.Body.String(), "sec content") {
 		t.Fatalf("cookie unlock failed: %d", rec.Code)
 	}
 	// a forged cookie value must not unlock
 	req = httptest.NewRequest("GET", "/can/"+created.ID, nil)
 	req.AddCookie(&http.Cookie{Name: "pw_" + created.ID, Value: "forged"})
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if strings.Contains(rec.Body.String(), "sec content") {
 		t.Fatalf("forged cookie unlocked the can")
 	}
 }
 // #4: can item access inherits the can unlock cookie (not just query param).
 func TestCanItemCookieParity(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, ct := multipartBody(t, map[string]string{
 		"title": "Cookie can", "password": "pw123",
 		"json_items": `[{"title":"s.txt","content":"sec"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var created struct{ ID string `json:"id"` }
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	// unlock via page to get the cookie
 	fd := strings.NewReader("password=pw123")
 	req = httptest.NewRequest("POST", "/can/"+created.ID, fd)
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var pwCookie *http.Cookie
 	for _, c := range rec.Result().Cookies() {
 		if c.Name == "pw_"+created.ID {
 			pwCookie = c
 		}
 	}
 	if pwCookie == nil {
 		t.Fatalf("no unlock cookie")
 	}
 	// item id from API (with password query)
 	req = httptest.NewRequest("GET", "/api/cans/"+created.ID, nil)
 	req.Header.Set("X-Paste-Password", "pw123")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var can struct {
 		Items []struct{ ID string `json:"id"` } `json:"items"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &can)
 	itemID := can.Items[0].ID
 	// API item with the unlock cookie but no password -> 200
 	req = httptest.NewRequest("GET", "/api/cans/"+created.ID+"/items/"+itemID, nil)
 	req.AddCookie(pwCookie)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
 		t.Fatalf("item via cookie expected 200, got %d", rec.Code)
 	}
 	// forged cookie -> 401
 	req = httptest.NewRequest("GET", "/api/cans/"+created.ID+"/items/"+itemID, nil)
 	req.AddCookie(&http.Cookie{Name: "pw_" + created.ID, Value: "forged"})
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 401 {
 		t.Fatalf("forged cookie on item expected 401, got %d", rec.Code)
 	}
 }
 // #4: viewer-scoped soft delete of cans.
 func TestCanDeleteParity(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, ct := multipartBody(t, map[string]string{
 		"title": "Doomed", "json_items": `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	req.AddCookie(&http.Cookie{Name: "vwr", Value: "creator"})
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var created struct{ ID string `json:"id"` }
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	// delete without matching viewer -> 403
 	req = httptest.NewRequest("DELETE", "/api/cans/"+created.ID, nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 403 {
 		t.Fatalf("unauthorized delete expected 403, got %d", rec.Code)
 	}
 	// creator's browser -> 200
 	req = httptest.NewRequest("DELETE", "/api/cans/"+created.ID, nil)
 	req.AddCookie(&http.Cookie{Name: "vwr", Value: "creator"})
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
 		t.Fatalf("creator delete expected 200, got %d", rec.Code)
 	}
 	// gone from API and page
 	req = httptest.NewRequest("GET", "/api/cans/"+created.ID, nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 404 {
 		t.Fatalf("deleted can expected 404, got %d", rec.Code)
 	}
 	// gone from listings
 	req = httptest.NewRequest("GET", "/api/public", nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if strings.Contains(rec.Body.String(), "Doomed") {
 		t.Fatalf("deleted can still listed")
 	}
 }
 // #4: cans appear in /api/mine for the creating browser.
 func TestCanInMine(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, ct := multipartBody(t, map[string]string{
 		"title": "Mine can", "json_items": `[{"title":"a.txt","content":"AAA"}]`,
 	}, "", "", "")
 	req := httptest.NewRequest("POST", "/api/pastes/can", body)
 	req.Header.Set("Content-Type", ct)
 	req.AddCookie(&http.Cookie{Name: "vwr", Value: "v-mine"})
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("create: %d", rec.Code)
 	}
 	req = httptest.NewRequest("GET", "/api/mine", nil)
 	req.AddCookie(&http.Cookie{Name: "vwr", Value: "v-mine"})
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var got struct {
 		Items []struct {
 			ID    string `json:"id"`
 			IsCan bool   `json:"is_can"`
 		} `json:"items"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &got)
 	if len(got.Items) != 1 || !got.Items[0].IsCan {
 		t.Fatalf("can missing from /api/mine: %s", rec.Body.String())
 	}
 }
 // #4: sweep soft-deletes expired cans (parity with pastes).
 func TestCanSweepExpired(t *testing.T) {
 	s := testServer(t)
 	s.store.CreateCan("sweepcan", "sweep", "", "public", nil, 1, nil, nil)
 	s.store.InsertCanItem("sweepcan", "a.txt", "AAA", "text/plain", nil, nil, nil, 1)
 	s.store.Exec(`UPDATE paste_cans SET expires_at=? WHERE id=?`, 100, "sweepcan")
 	s.store.SweepExpired()
 	if can, _ := s.store.GetCan("sweepcan"); can != nil {
 		t.Fatalf("expired can survived sweep")
 	}
 	_ = store.GenSlug(4) // keep import if store pkg shrinks
 }
@@ -112,7 +112,8 @@ func TestCanPasswordInheritedByItems(t *testing.T) {
 	}
 	// get item id with pw
-	req = httptest.NewRequest("GET", "/api/cans/"+created.ID+"?password=pw123", nil)
+	req = httptest.NewRequest("GET", "/api/cans/"+created.ID, nil)
 	req.Header.Set("X-Paste-Password", "pw123")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var can struct {
@@ -130,7 +131,8 @@ func TestCanPasswordInheritedByItems(t *testing.T) {
 	}
 	// item with pw -> 200
-	req = httptest.NewRequest("GET", "/api/cans/"+created.ID+"/items/"+itemID+"?password=pw123", nil)
+	req = httptest.NewRequest("GET", "/api/cans/"+created.ID+"/items/"+itemID, nil)
 	req.Header.Set("X-Paste-Password", "pw123")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
@@ -0,0 +1,97 @@
 package api
 // #143: create responses must set the short-lived tok_<id> HttpOnly cookie
 // that the paste view reads for the one-time created banner.
 import (
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 )
 func TestCreateSetsDeletionTokenCookie(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	// JSON create
 	body := `{"content":"hello #143 cookie"}`
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(body))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("json create: got %d", rec.Code)
 	}
 	found := false
 	for _, c := range rec.Result().Cookies() {
 		if strings.HasPrefix(c.Name, "tok_") && c.Value != "" {
 			found = true
 			if !c.HttpOnly {
 				t.Error("tok_ cookie not HttpOnly")
 			}
 			if c.MaxAge != 60 {
 				t.Errorf("tok_ cookie MaxAge = %d, want 60", c.MaxAge)
 			}
 		}
 	}
 	if !found {
 		t.Error("json create did not set tok_<id> cookie (#143)")
 	}
 	// multipart create
 	var buf strings.Builder
 	boundary := "----qa143"
 	buf.WriteString("--" + boundary + "\r\n")
 	buf.WriteString("Content-Disposition: form-data; name=\"content\"\r\n\r\n")
 	buf.WriteString("multipart #143\r\n")
 	buf.WriteString("--" + boundary + "--\r\n")
 	req2 := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(buf.String()))
 	req2.Header.Set("Content-Type", "multipart/form-data; boundary="+boundary)
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req2)
 	if rec2.Code != 201 {
 		t.Fatalf("multipart create: got %d body=%s", rec2.Code, rec2.Body.String())
 	}
 	found = false
 	for _, c := range rec2.Result().Cookies() {
 		if strings.HasPrefix(c.Name, "tok_") && c.Value != "" {
 			found = true
 		}
 	}
 	if !found {
 		t.Error("multipart create did not set tok_<id> cookie (#143)")
 	}
 }
 func TestCreatedBannerViaCookie(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body := `{"content":"banner flow #143"}`
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(body))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("create: got %d", rec.Code)
 	}
 	var id, tok string
 	for _, c := range rec.Result().Cookies() {
 		if strings.HasPrefix(c.Name, "tok_") {
 			id = strings.TrimPrefix(c.Name, "tok_")
 			tok = c.Value
 		}
 	}
 	if id == "" || tok == "" {
 		t.Fatal("no tok_ cookie from create")
 	}
 	// follow the redirect the browser would make: GET /<id>?created=1 with the cookie
 	req2 := httptest.NewRequest("GET", "/"+id+"?created=1", nil)
 	req2.AddCookie(&http.Cookie{Name: "tok_" + id, Value: tok})
 	rec2 := httptest.NewRecorder()
 	h.ServeHTTP(rec2, req2)
 	if rec2.Code != 200 {
 		t.Fatalf("paste view: got %d", rec2.Code)
 	}
 	if !strings.Contains(rec2.Body.String(), tok) {
 		t.Error("created banner does not show the deletion token (#143 cookie flow broken)")
 	}
 }
@@ -1,9 +1,10 @@
 package api
-// Regression tests for #63: DELETE /api/pastes/{id} must require the
+// Regression tests for #63 and #143: DELETE /api/pastes/{id} must require the
-// deletion token (Authorization header or ?token= query param, constant-time
+// deletion token in the Authorization header (constant-time compare). The
-// compare). Without a token, or with a wrong token, the paste must survive
+// ?token= query parameter is NOT accepted (#143): URL-carried tokens leak
-// and the response must be 403.
+// into access logs and browser history. Without a token, or with a wrong
 // token, the paste must survive and the response must be 403.
 import (
 	"encoding/json"
@@ -68,10 +69,14 @@ func TestDeleteWithWrongTokenForbidden(t *testing.T) {
 	h := s.routes()
 	id, _ := createTestPaste(t, h)
-	// query param
+	// query param: even the CORRECT token must be rejected now (#143)
-	rec := doReq(t, h, "DELETE", "/api/pastes/"+id+"?token=wrong-token", "", "")
+	id2, tok2 := createTestPaste(t, h)
 	rec := doReq(t, h, "DELETE", "/api/pastes/"+id2+"?token="+tok2, "", "")
 	if rec.Code != http.StatusForbidden {
-		t.Fatalf("delete with wrong token (query): got %d want 403", rec.Code)
+		t.Fatalf("delete with correct token in query: got %d want 403 (#143)", rec.Code)
 	}
 	if !pasteExists(t, h, id2) {
 		t.Fatal("paste was deleted via ?token= query param (#143 regression)")
 	}
 	// header
 	req := httptest.NewRequest("DELETE", "/api/pastes/"+id, nil)
@@ -103,14 +108,43 @@ func TestDeleteWithCorrectToken(t *testing.T) {
 		t.Fatal("paste still exists after authorized delete")
 	}
-	// via query param
+	// query param: even with the correct token the delete must fail (#143)
 	id, tok = createTestPaste(t, h)
 	rec = doReq(t, h, "DELETE", "/api/pastes/"+id+"?token="+tok, "", "")
 	if rec.Code != http.StatusForbidden {
 		t.Fatalf("delete with correct token (query): got %d want 403 (#143)", rec.Code)
 	}
 	if !pasteExists(t, h, id) {
 		t.Fatal("paste was deleted via ?token= query param (#143 regression)")
 	}
 }
 // #143: the deletion token must be accepted via the Authorization header on
 // the redeem (hard delete) endpoint too.
 func TestRedeemWithCorrectTokenHeader(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	id, tok := createTestPaste(t, h)
 	req := httptest.NewRequest("DELETE", "/api/pastes/"+id+"/redeem", nil)
 	req.Header.Set("Authorization", "Bearer "+tok)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
-		t.Fatalf("delete with correct token (query): got %d want 200", rec.Code)
+		t.Fatalf("redeem with correct token (header): got %d want 200: %s", rec.Code, rec.Body.String())
 	}
 	if pasteExists(t, h, id) {
-		t.Fatal("paste still exists after authorized delete (query)")
+		t.Fatal("paste still exists after authorized redeem")
 	}
 	// query param must NOT work on redeem either
 	id, tok = createTestPaste(t, h)
 	rec = doReq(t, h, "DELETE", "/api/pastes/"+id+"/redeem?token="+tok, "", "")
 	if rec.Code != http.StatusBadRequest {
 		t.Fatalf("redeem via ?token= query: got %d want 400 (#143)", rec.Code)
 	}
 	if !pasteExists(t, h, id) {
 		t.Fatal("paste was hard-deleted via ?token= query param (#143 regression)")
 	}
 }
@@ -161,8 +195,8 @@ func TestDeletionAuthorizationExtract(t *testing.T) {
 		{"bearer tok", "", "tok"},
 		{"Token tok", "", "tok"},
 		{"tok", "", "tok"},
-		{"", "?token=q", "q"},
+		{"", "?token=q", ""},              // #143: query tokens are never accepted
-		{"Bearer hdr", "?token=q", "hdr"}, // header wins
+		{"Bearer hdr", "?token=q", "hdr"}, // header only
 	}
 	for _, c := range cases {
 		if got := deletionAuthorization(mk(c.hdr, c.q)); got != c.want {
@@ -0,0 +1,123 @@
 package api
 import (
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 )
 // #105: every validation path on create returns a machine-readable `code`
 // alongside the human `error` message, so the new-page JS can map known
 // codes to plain-language guidance.
 func decodeErr(t *testing.T, rec *httptest.ResponseRecorder) (status int, errMsg, code string) {
 	t.Helper()
 	var got struct {
 		Error string `json:"error"`
 		Code  string `json:"code"`
 	}
 	if err := json.Unmarshal(rec.Body.Bytes(), &got); err != nil {
 		t.Fatalf("bad json: %v (%s)", err, rec.Body.String())
 	}
 	return rec.Code, got.Error, got.Code
 }
 func postCreate(h http.Handler, body string) *httptest.ResponseRecorder {
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(body))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	return rec
 }
 func TestErrorCodeContentEmpty(t *testing.T) {
 	h := testServer(t).routes()
 	_, _, code := decodeErr(t, postCreate(h, `{"content":"   "}`))
 	if code != "content_empty" {
 		t.Fatalf("code = %q, want content_empty", code)
 	}
 }
 func TestErrorCodeContentTooLarge(t *testing.T) {
 	h := testServer(t).routes()
 	big := strings.Repeat("x", 6*1024*1024) // over the 5MB test cap
 	_, _, code := decodeErr(t, postCreate(h, `{"content":"`+big+`"}`))
 	if code != "content_too_large" {
 		t.Fatalf("code = %q, want content_too_large", code)
 	}
 }
 func TestErrorCodeSlugTaken(t *testing.T) {
 	h := testServer(t).routes()
 	if rec := postCreate(h, `{"content":"a","custom_slug":"taken-slug"}`); rec.Code != 201 {
 		t.Fatalf("seed create: %d %s", rec.Code, rec.Body.String())
 	}
 	_, _, code := decodeErr(t, postCreate(h, `{"content":"b","custom_slug":"taken-slug"}`))
 	if code != "slug_taken" {
 		t.Fatalf("code = %q, want slug_taken", code)
 	}
 }
 func TestErrorCodeSlugInvalid(t *testing.T) {
 	h := testServer(t).routes()
 	_, _, code := decodeErr(t, postCreate(h, `{"content":"a","custom_slug":"bad slug!"}`))
 	if code != "slug_invalid" {
 		t.Fatalf("code = %q, want slug_invalid", code)
 	}
 }
 func TestErrorCodeExpiryInvalid(t *testing.T) {
 	h := testServer(t).routes()
 	_, _, code := decodeErr(t, postCreate(h, `{"content":"a","expires_in":"2s"}`))
 	if code != "expiry_invalid" {
 		t.Fatalf("code = %q, want expiry_invalid", code)
 	}
 }
 func TestErrorCodeRateLimited(t *testing.T) {
 	h := testServer(t).routes()
 	var code string
 	for i := 0; i < 20; i++ {
 		_, _, code = decodeErr(t, postCreate(h, `{"content":"a"}`))
 		if code == "rate_limited" {
 			return
 		}
 	}
 	t.Fatalf("never got rate_limited, last code = %q", code)
 }
 func TestErrorCodeCanValidation(t *testing.T) {
 	h := testServer(t).routes()
 	post := func(fields map[string]string) *httptest.ResponseRecorder {
 		var b strings.Builder
 		for k, v := range fields {
 			b.WriteString("--B\r\nContent-Disposition: form-data; name=\"" + k + "\"\r\n\r\n" + v + "\r\n")
 		}
 		b.WriteString("--B--\r\n")
 		req := httptest.NewRequest("POST", "/api/pastes/can", strings.NewReader(b.String()))
 		req.Header.Set("Content-Type", "multipart/form-data; boundary=B")
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		return rec
 	}
 	// bad visibility
 	if _, _, code := decodeErr(t, post(map[string]string{"title": "x", "visibility": "nope"})); code != "invalid_visibility" {
 		t.Fatalf("visibility code = %q, want invalid_visibility", code)
 	}
 	// invalid expiry
 	if _, _, code := decodeErr(t, post(map[string]string{"title": "x", "expires_in": "1s"})); code != "expiry_invalid" {
 		t.Fatalf("expiry code = %q, want expiry_invalid", code)
 	}
 	// slug taken on can create
 	if rec := postCreate(h, `{"content":"a","custom_slug":"can-slug"}`); rec.Code != 201 {
 		t.Fatalf("seed create: %d", rec.Code)
 	}
 	if _, _, code := decodeErr(t, post(map[string]string{"title": "x", "custom_slug": "can-slug", "json_items": `[{"title":"a","content":"b"}]`})); code != "slug_taken" {
 		t.Fatalf("can slug code = %q, want slug_taken", code)
 	}
 }
@@ -0,0 +1,67 @@
 package api
 // #138: the vwr viewer cookie must carry the Secure attribute. Tests inspect
 // the Set-Cookie header directly rather than relying on cookie round-tripping,
 // because Go's HTTP client (and browsers) drop Secure cookies over plain HTTP,
 // which is how tests and local dev run.
 import (
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"palette/internal/store"
 	"palette/internal/web"
 )
 func newTestServer138(t *testing.T) *httptest.ResponseRecorder {
 	t.Helper()
 	st, err := store.OpenStore(":memory:")
 	if err != nil {
 		t.Fatal(err)
 	}
 	ui, err := web.New()
 	if err != nil {
 		t.Fatal(err)
 	}
 	cfg := Config{MaxTextBytes: 5 * 1024 * 1024}
 	ss := NewTestSettingsStore(t, cfg)
 	globalSettingsFn = ss.get
 	t.Cleanup(func() { globalSettingsFn = nil })
 	a := &apiServer{store: st, cfg: cfg, ui: ui, settings: ss, adminKey: "test-admin-key"}
 	req := httptest.NewRequest("GET", "/history", nil)
 	rec := httptest.NewRecorder()
 	a.routes().ServeHTTP(rec, req)
 	return rec
 }
 func TestViewerCookieAttributes(t *testing.T) {
 	rec := newTestServer138(t)
 	var vwr *string
 	for _, c := range rec.Result().Cookies() {
 		if c.Name == "vwr" {
 			cc := c
 			vwr = &cc.Value
 			if !c.Secure {
 				t.Error("vwr cookie missing Secure attribute (#138)")
 			}
 			if !c.HttpOnly {
 				t.Error("vwr cookie missing HttpOnly attribute")
 			}
 			if c.Path != "/" {
 				t.Errorf("vwr cookie Path = %q, want /", c.Path)
 			}
 			if c.SameSite != 2 { // http.SameSiteLaxMode
 				t.Errorf("vwr cookie SameSite = %v, want Lax", c.SameSite)
 			}
 		}
 	}
 	if vwr == nil {
 		t.Fatal("no vwr cookie set")
 	}
 	// also confirm the raw header form spells out Secure
 	sc := rec.Header().Get("Set-Cookie")
 	if !strings.Contains(sc, "Secure") {
 		t.Errorf("Set-Cookie header %q lacks Secure", sc)
 	}
 }
@@ -0,0 +1,94 @@
 package api
 // #81: ALL password verification attempts (GET query param, header, POST
 // form) must go through the per-IP unlock limiter. Regression: N wrong
 // passwords via X-Paste-Password must eventually yield 429.
 import (
 	"encoding/json"
 	"net/http/httptest"
 	"strings"
 	"testing"
 )
 func createPasswordPaste(t *testing.T, s *apiServer, pw string) string {
 	t.Helper()
 	h := s.routes()
 	body := `{"content":"secret","password":"` + pw + `"}`
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(body))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	var created struct {
 		ID string `json:"id"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &created)
 	return created.ID
 }
 // TestRateLimitGetPasswordQuery: repeated wrong passwords via GET
 // X-Paste-Password wrong attempts must eventually return 429 (unlock limiter: burst 5).
 func TestRateLimitGetPasswordQuery(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	id := createPasswordPaste(t, s, "hunter2")
 	var saw429 bool
 	// more attempts than the unlock burst (5)
 	for i := 0; i < 10; i++ {
 		req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 		req.Header.Set("X-Paste-Password", "wrong"+string(rune('a'+i)))
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		if rec.Code == 429 {
 			saw429 = true
 			break
 		}
 		if rec.Code != 401 {
 			t.Fatalf("attempt %d: expected 401 before limit, got %d", i, rec.Code)
 		}
 	}
 	if !saw429 {
 		t.Fatal("expected 429 after repeated wrong password attempts, never got one")
 	}
 }
 // TestRateLimitGetPasswordHeader: same guarantee for the X-Paste-Password header path.
 func TestRateLimitGetPasswordHeader(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	id := createPasswordPaste(t, s, "hunter2")
 	var saw429 bool
 	for i := 0; i < 10; i++ {
 		req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 		req.Header.Set("X-Paste-Password", "wrong"+string(rune('a'+i)))
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		if rec.Code == 429 {
 			saw429 = true
 			break
 		}
 		if rec.Code != 401 {
 			t.Fatalf("attempt %d: expected 401 before limit, got %d", i, rec.Code)
 		}
 	}
 	if !saw429 {
 		t.Fatal("expected 429 after repeated wrong header password attempts, never got one")
 	}
 }
 // TestRateLimitGetPasswordCorrectStillAllowed: a correct password must still
 // work within the burst (the limiter gates attempts, not correctness).
 func TestRateLimitGetPasswordCorrectStillAllowed(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	id := createPasswordPaste(t, s, "hunter2")
 	req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 	req.Header.Set("X-Paste-Password", "hunter2")
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
 		t.Fatalf("expected 200 for correct password within burst, got %d", rec.Code)
 	}
 }
@@ -0,0 +1,152 @@
 package api
 // Regression tests for #86: title and language are bounded at create time.
 // Titles over 200 chars are truncated; language must match
 // ^[a-zA-Z0-9+#-]{1,40}$ or the create is rejected with a clear 400.
 import (
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 )
 // pasteMeta fetches a created paste's stored metadata via the API.
 func pasteMeta(t *testing.T, h http.Handler, id string) map[string]any {
 	t.Helper()
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, httptest.NewRequest("GET", "/api/pastes/"+id, nil))
 	if rec.Code != 200 {
 		t.Fatalf("get paste %s: got %d: %s", id, rec.Code, rec.Body.String())
 	}
 	var m map[string]any
 	if err := json.Unmarshal(rec.Body.Bytes(), &m); err != nil {
 		t.Fatal(err)
 	}
 	return m
 }
 // A 5000-char title is truncated to 200 characters at create time (#86).
 func TestCreatePasteTitleTruncated(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	title := strings.Repeat("t", 5000)
 	body, _ := json.Marshal(map[string]any{"content": "hi", "title": title})
 	rec := createPasteRaw(t, h, string(body))
 	if rec.Code != http.StatusCreated {
 		t.Fatalf("got %d want 201: %s", rec.Code, rec.Body.String())
 	}
 	var resp struct {
 		ID string `json:"id"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &resp)
 	meta := pasteMeta(t, h, resp.ID)
 	got, _ := meta["title"].(string)
 	if got != strings.Repeat("t", 200) {
 		t.Fatalf("title not truncated to 200 chars: len=%d", len(got))
 	}
 }
 // A title within the 200-char bound is stored verbatim (minus surrounding
 // whitespace, which is trimmed).
 func TestCreatePasteTitleWithinBoundKept(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	title := "  " + strings.Repeat("x", 200) + "  "
 	body, _ := json.Marshal(map[string]any{"content": "hi", "title": title})
 	rec := createPasteRaw(t, h, string(body))
 	if rec.Code != http.StatusCreated {
 		t.Fatalf("got %d want 201: %s", rec.Code, rec.Body.String())
 	}
 	var resp struct {
 		ID string `json:"id"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &resp)
 	meta := pasteMeta(t, h, resp.ID)
 	if got, _ := meta["title"].(string); got != strings.Repeat("x", 200) {
 		t.Fatalf("title changed unexpectedly: len=%d", len(got))
 	}
 }
 // A language longer than 40 chars is rejected with a clear 400 (#86).
 func TestCreatePasteLanguageTooLong400(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	body, _ := json.Marshal(map[string]any{"content": "hi", "language": strings.Repeat("a", 41)})
 	rec := createPasteRaw(t, h, string(body))
 	if rec.Code != http.StatusBadRequest {
 		t.Fatalf("got %d want 400: %s", rec.Code, rec.Body.String())
 	}
 	if !strings.Contains(rec.Body.String(), "language") {
 		t.Fatalf("unclear error message: %s", rec.Body.String())
 	}
 }
 // Language strings outside ^[a-zA-Z0-9+#-]{1,40}$ are rejected with 400.
 func TestCreatePasteLanguageBadFormat400(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	for _, bad := range []string{
 		"<img src=x onerror=alert(1)>",
 		"java script",
 		"c++ extra!",
 		"py_thon",
 		"go.lang",
 	} {
 		body, _ := json.Marshal(map[string]any{"content": "hi", "language": bad})
 		rec := createPasteRaw(t, h, string(body))
 		if rec.Code != http.StatusBadRequest {
 			t.Errorf("language %q: got %d want 400: %s", bad, rec.Code, rec.Body.String())
 			continue
 		}
 		if !strings.Contains(rec.Body.String(), "language must match") {
 			t.Errorf("language %q: unclear error: %s", bad, rec.Body.String())
 		}
 	}
 }
 // Valid languages (letters, digits, #, +, -) within 40 chars are accepted.
 func TestCreatePasteLanguageValidAccepted(t *testing.T) {
 	for _, ok := range []string{"go", "c#", "f#", "c++", "objective-c", "ECMAScript-2023", strings.Repeat("a", 40)} {
 		s2 := testServer(t) // fresh rate limiter per case
 		h2 := s2.routes()
 		body, _ := json.Marshal(map[string]any{"content": "hi", "language": ok})
 		rec := createPasteRaw(t, h2, string(body))
 		if rec.Code != http.StatusCreated {
 			t.Errorf("language %q: got %d want 201: %s", ok, rec.Code, rec.Body.String())
 		}
 	}
 }
 // An absent or blank language still creates fine and stores NULL, and a
 // blank title is stored NULL rather than an empty string.
 func TestCreatePasteBlankMetadataOK(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	for _, body := range []string{
 		`{"content":"hi"}`,
 		`{"content":"hi","language":"","title":"  "}`,
 	} {
 		rec := createPasteRaw(t, h, body)
 		if rec.Code != http.StatusCreated {
 			t.Fatalf("body %s: got %d want 201: %s", body, rec.Code, rec.Body.String())
 		}
 		var resp struct {
 			ID string `json:"id"`
 		}
 		json.Unmarshal(rec.Body.Bytes(), &resp)
 		meta := pasteMeta(t, h, resp.ID)
 		if lang, ok := meta["language"]; ok && lang != nil && lang != "" {
 			t.Fatalf("body %s: language not null: %v", body, lang)
 		}
 		if title, ok := meta["title"]; ok && title != nil && title != "" {
 			t.Fatalf("body %s: title not null: %v", body, title)
 		}
 	}
 }
@@ -89,7 +89,8 @@ func TestPasswordProtection(t *testing.T) {
 	}
 	// with password -> 200
-	req = httptest.NewRequest("GET", "/api/pastes/"+created.ID+"?password=hunter2", nil)
+	req = httptest.NewRequest("GET", "/api/pastes/"+created.ID, nil)
 	req.Header.Set("X-Paste-Password", "hunter2")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 200 {
@@ -97,7 +98,8 @@ func TestPasswordProtection(t *testing.T) {
 	}
 	// wrong password -> 401
-	req = httptest.NewRequest("GET", "/api/pastes/"+created.ID+"?password=nope", nil)
+	req = httptest.NewRequest("GET", "/api/pastes/"+created.ID, nil)
 	req.Header.Set("X-Paste-Password", "nope")
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if rec.Code != 401 {
@@ -0,0 +1,97 @@
 package api
 // #83 regression tests: `public` boolean in the create payload must map to
 // visibility (false -> unlisted, true -> public); string `visibility` still works.
 import (
 	"encoding/json"
 	"net/http/httptest"
 	"strings"
 	"testing"
 )
 func createPasteBody(t *testing.T, h *apiServer, body string) map[string]any {
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(body))
 	rec := httptest.NewRecorder()
 	h.routes().ServeHTTP(rec, req)
 	if rec.Code != 201 {
 		t.Fatalf("create: got %d: %s", rec.Code, rec.Body.String())
 	}
 	var resp map[string]any
 	if err := json.Unmarshal(rec.Body.Bytes(), &resp); err != nil {
 		t.Fatalf("bad json: %v", err)
 	}
 	return resp
 }
 func getVis(t *testing.T, h *apiServer, id string) string {
 	req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 	rec := httptest.NewRecorder()
 	h.routes().ServeHTTP(rec, req)
 	if rec.Code != 200 {
 		t.Fatalf("get %s: got %d", id, rec.Code)
 	}
 	var resp struct {
 		Visibility string `json:"visibility"`
 	}
 	if err := json.Unmarshal(rec.Body.Bytes(), &resp); err != nil {
 		t.Fatalf("bad json: %v", err)
 	}
 	return resp.Visibility
 }
 // TestPublicBooleanFalseMapsToUnlisted: {"public": false} must create an unlisted paste.
 func TestPublicBooleanFalseMapsToUnlisted(t *testing.T) {
 	s := testServer(t)
 	resp := createPasteBody(t, s, `{"content":"x","public":false}`)
 	if v := getVis(t, s, resp["id"].(string)); v != "unlisted" {
 		t.Fatalf("public:false -> got visibility %q, want unlisted", v)
 	}
 }
 // TestPublicBooleanTrueMapsToPublic: {"public": true} must create a public paste.
 func TestPublicBooleanTrueMapsToPublic(t *testing.T) {
 	s := testServer(t)
 	resp := createPasteBody(t, s, `{"content":"x","public":true}`)
 	if v := getVis(t, s, resp["id"].(string)); v != "public" {
 		t.Fatalf("public:true -> got visibility %q, want public", v)
 	}
 }
 // TestPublicBooleanOverridesString: boolean wins when both fields are sent.
 func TestPublicBooleanOverridesString(t *testing.T) {
 	s := testServer(t)
 	resp := createPasteBody(t, s, `{"content":"x","visibility":"public","public":false}`)
 	if v := getVis(t, s, resp["id"].(string)); v != "unlisted" {
 		t.Fatalf("boolean override -> got %q, want unlisted", v)
 	}
 }
 // TestVisibilityStringStillWorks: existing string contract unchanged.
 func TestVisibilityStringStillWorks(t *testing.T) {
 	s := testServer(t)
 	resp := createPasteBody(t, s, `{"content":"x","visibility":"unlisted"}`)
 	if v := getVis(t, s, resp["id"].(string)); v != "unlisted" {
 		t.Fatalf("string field -> got %q, want unlisted", v)
 	}
 	resp = createPasteBody(t, s, `{"content":"y","visibility":"public"}`)
 	if v := getVis(t, s, resp["id"].(string)); v != "public" {
 		t.Fatalf("string field -> got %q, want public", v)
 	}
 }
 // TestPublicListExcludesPublicFalse: {"public":false} pastes stay out of /api/public.
 func TestPublicListExcludesPublicFalse(t *testing.T) {
 	s := testServer(t)
 	createPasteBody(t, s, `{"content":"hidden","public":false}`)
 	req := httptest.NewRequest("GET", "/api/public", nil)
 	rec := httptest.NewRecorder()
 	s.routes().ServeHTTP(rec, req)
 	var resp struct {
 		Total int `json:"total"`
 	}
 	json.Unmarshal(rec.Body.Bytes(), &resp)
 	if resp.Total != 0 {
 		t.Fatalf("public:false paste leaked into /api/public: total=%d", resp.Total)
 	}
 }
@@ -48,8 +48,28 @@ func (l *limiter) allow(key string, rate, burst float64) bool {
 	return true
 }
-// clientIP extracts the request IP (no reverse proxy header by default).
+// clientIP extracts the client IP for rate-limit keying (#85).
 //
 // Trust boundary: palette runs behind exactly ONE trusted reverse proxy
 // (Traefik in the k3s pod network). Traefik APPENDS the real client IP to
 // X-Forwarded-For, so the RIGHTMOST entry is the last value the trusted
 // proxy observed and is unspoofable by the client (a client-supplied fake
 // entry only lands on the LEFT and is ignored). This matches chi's
 // middleware.RealIP semantics for a single trusted proxy hop.
 //
 // Direct connections (no XFF header) fall back to RemoteAddr. Directly
 // reachable deployments must NOT expose the app to untrusted networks
 // without a proxy in front, or attackers could forge the rightmost entry.
 func clientIP(r *http.Request) string {
 	if xff := r.Header.Get("X-Forwarded-For"); xff != "" {
 		if i := strings.LastIndex(xff, ","); i >= 0 {
 			return strings.TrimSpace(xff[i+1:])
 		}
 		return strings.TrimSpace(xff)
 	}
 	if xr := r.Header.Get("X-Real-Ip"); xr != "" {
 		return strings.TrimSpace(xr)
 	}
 	host := r.RemoteAddr
 	if i := strings.LastIndex(host, ":"); i > 0 {
 		host = host[:i]
@@ -93,7 +113,7 @@ func rateLimitAdmin(r *http.Request) bool {
 // writeRateLimited responds 429 with Retry-After based on refill rate.
 func writeRateLimited(w http.ResponseWriter, retryAfterSecs int) {
 	w.Header().Set("Retry-After", strconv.Itoa(retryAfterSecs))
-	writeErr(w, 429, "rate limit exceeded")
+	writeErrCode(w, 429, "rate_limited", "rate limit exceeded")
 }
 // setRateLimitHeaders sets informational X-RateLimit headers for create/guess.
@@ -0,0 +1,85 @@
 package api
 // Issue #85: the rate limit key must use the rightmost X-Forwarded-For entry
 // (appended by the trusted Traefik proxy), never the raw/leftmost header
 // value a client can forge. A spoofed FIRST XFF entry must not bypass the
 // limit or rotate buckets.
 import (
 	"bytes"
 	"net/http/httptest"
 	"testing"
 )
 func TestClientIPTakesRightmostXFF(t *testing.T) {
 	r := httptest.NewRequest("POST", "/", nil)
 	r.RemoteAddr = "10.42.0.7:51000" // trusted Traefik pod
 	r.Header.Set("X-Forwarded-For", "1.2.3.4, 1.2.3.5, 203.0.113.9")
 	if got := clientIP(r); got != "203.0.113.9" {
 		t.Fatalf("clientIP = %q, want rightmost 203.0.113.9", got)
 	}
 }
 func TestClientIPXRealIPFallback(t *testing.T) {
 	r := httptest.NewRequest("POST", "/", nil)
 	r.RemoteAddr = "10.42.0.7:51000"
 	r.Header.Set("X-Real-Ip", "203.0.113.10")
 	if got := clientIP(r); got != "203.0.113.10" {
 		t.Fatalf("clientIP = %q, want 203.0.113.10", got)
 	}
 }
 func TestClientIPDirectFallback(t *testing.T) {
 	r := httptest.NewRequest("POST", "/", nil)
 	r.RemoteAddr = "198.51.100.5:51000"
 	if got := clientIP(r); got != "198.51.100.5" {
 		t.Fatalf("clientIP = %q, want 198.51.100.5", got)
 	}
 }
 // TestRateLimitSpoofedFirstXFFDoesNotBypass: an attacker rotating a fake
 // leftmost XFF entry stays limited on their real (rightmost) IP.
 func TestRateLimitSpoofedFirstXFFDoesNotBypass(t *testing.T) {
 	srv := newTestServer(t)
 	h := srv.routes()
 	for i := 0; i < 5; i++ {
 		req := httptest.NewRequest("POST", "/api/pastes", bytes.NewReader([]byte(`{"content":"hi"}`)))
 		req.RemoteAddr = "10.42.0.7:51000"
 		// each request spoofs a DIFFERENT leftmost entry
 		req.Header.Set("X-Forwarded-For", spoofN(i)+", 203.0.113.9")
 		rr := httptest.NewRecorder()
 		h.ServeHTTP(rr, req)
 		if rr.Code != 201 {
 			t.Fatalf("req %d: want 201, got %d", i, rr.Code)
 		}
 	}
 	// 6th request, still the same real IP, new spoofed prefix: must 429
 	req := httptest.NewRequest("POST", "/api/pastes", bytes.NewReader([]byte(`{"content":"hi"}`)))
 	req.RemoteAddr = "10.42.0.7:51000"
 	req.Header.Set("X-Forwarded-For", "9.9.9.9, 203.0.113.9")
 	rr := httptest.NewRecorder()
 	h.ServeHTTP(rr, req)
 	if rr.Code != 429 {
 		t.Fatalf("spoofed 6th req: want 429, got %d", rr.Code)
 	}
 }
 func spoofN(i int) string {
 	return "1.2.3." + string(rune('0'+i))
 }
 // Distinct real IPs must still get distinct buckets (no over-limiting).
 func TestRateLimitDistinctRightmostIPsIndependent(t *testing.T) {
 	srv := newTestServer(t)
 	h := srv.routes()
 	for _, ip := range []string{"203.0.113.20", "203.0.113.21"} {
 		req := httptest.NewRequest("POST", "/api/pastes", bytes.NewReader([]byte(`{"content":"hi"}`)))
 		req.RemoteAddr = "10.42.0.7:51000"
 		req.Header.Set("X-Forwarded-For", "6.6.6.6, "+ip)
 		rr := httptest.NewRecorder()
 		h.ServeHTTP(rr, req)
 		if rr.Code != 201 {
 			t.Fatalf("ip %s: want 201, got %d", ip, rr.Code)
 		}
 	}
 }
@@ -4,8 +4,11 @@ package api
 import (
 	"context"
 	"database/sql"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"html/template"
 	"net/http"
 	"os"
 	"strconv"
@@ -15,8 +18,7 @@ import (
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
-	"database/sql"
+	langpkg "palette/internal/lang"
 	"palette/internal/store"
 	"palette/internal/web"
 )
@@ -50,6 +52,30 @@ func writeErr(w http.ResponseWriter, status int, msg string) {
 	writeJSON(w, status, map[string]string{"error": msg})
 }
 // writeErrCode emits a JSON error with a machine-readable code (#105): the
 // new-page JS maps known codes to plain-language messages, API consumers get
 // the stable `code` field alongside the human `error` text.
 func writeErrCode(w http.ResponseWriter, status int, code, msg string) {
 	writeJSON(w, status, map[string]string{"error": msg, "code": code})
 }
 // createErrCode maps a store.CreatePaste/CreateCan error to its UI error
 // code (#105).
 func createErrCode(err error) string {
 	switch {
 	case errors.Is(err, store.ErrSlugTaken):
 		return "slug_taken"
 	case errors.Is(err, store.ErrReservedSlug):
 		return "slug_reserved"
 	case errors.Is(err, store.ErrInvalidSlug):
 		return "slug_invalid"
 	case strings.Contains(err.Error(), "expires_in"):
 		return "expiry_invalid"
 	default:
 		return "invalid_request"
 	}
 }
 // Routes returns the HTTP handler for the server.
 func (a *apiServer) Routes() http.Handler {
 	return a.routes()
@@ -79,13 +105,16 @@ func (a *apiServer) routes() http.Handler {
 		r.Post("/guess-language", a.handleGuessLang)
 		r.Post("/pastes/can", a.handleCreateCan)
 		r.Get("/cans/{id}", a.handleGetCan)
 		r.Delete("/cans/{id}", a.handleDeleteCan)
 		r.Get("/cans/{id}/items/{item}", a.handleCanItem)
 	})
-	// can page
+	// can page (#4): GET renders, POST unlocks (same flow as pastes)
 	r.Get("/can/{id}", a.handleCanPage)
 	r.Post("/can/{id}", a.handleCanPage)
-	// raw
+	// raw + #38 attachment serving
 	r.Get("/f/{aid}/{filename}", a.handleServeAttachment)
 	r.Get("/raw/{id}", a.handleRaw)
 	// web pages
@@ -112,9 +141,12 @@ func viewerCookieMiddleware(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if c, err := r.Cookie("vwr"); err != nil || c.Value == "" {
 			id := store.GenSlug(16)
 			// #138: Secure keeps the viewer id off plain-HTTP requests
 			// (all deployments are HTTPS-only behind traefik).
 			http.SetCookie(w, &http.Cookie{
 				Name: "vwr", Value: id, Path: "/",
-				MaxAge: 31536000, HttpOnly: true, SameSite: http.SameSiteLaxMode,
+				MaxAge: 31536000, HttpOnly: true, Secure: true,
 				SameSite: http.SameSiteLaxMode,
 			})
 			r.AddCookie(&http.Cookie{Name: "vwr", Value: id})
 			// remember that this cookie was minted here, not sent by the client
@@ -145,6 +177,16 @@ func viewerSentCookie(r *http.Request) bool {
 	return !minted
 }
 // #143: hand the deletion token to the creator's browser via a short-lived
 // HttpOnly cookie instead of the URL. The paste view reads it once to show
 // the one-time created banner; it expires after 60s.
 func setDeletionTokenCookie(w http.ResponseWriter, pasteID, token string) {
 	http.SetCookie(w, &http.Cookie{
 		Name: "tok_" + pasteID, Value: token, Path: "/",
 		MaxAge: 60, HttpOnly: true, SameSite: http.SameSiteLaxMode,
 	})
 }
 func (a *apiServer) handleCreatePaste(w http.ResponseWriter, r *http.Request) {
 	s := a.settings.get()
 	setRateLimitHeaders(w, 1, 5)
@@ -152,19 +194,49 @@ func (a *apiServer) handleCreatePaste(w http.ResponseWriter, r *http.Request) {
 		writeRateLimited(w, 1)
 		return
 	}
 	ct := r.Header.Get("Content-Type")
 	if strings.HasPrefix(ct, "multipart/form-data") {
 		a.handleCreatePasteMultipart(w, r, s) // #38: file attachment create
 		return
 	}
 	var p store.Paste
 	if err := json.NewDecoder(r.Body).Decode(&p); err != nil {
 		if isBodyTooLarge(err) { // #68: body cut off by MaxBytesReader
-			writeBodyTooLarge(w)
+			writeErrCode(w, http.StatusRequestEntityTooLarge, "content_too_large", "request body too large")
 			return
 		}
 		writeErr(w, 400, "invalid json body")
 		return
 	}
 	if status, msg := checkContent(p.Content, s.MaxContentBytes); status != 0 {
-		writeErr(w, status, msg)
+		if status == http.StatusRequestEntityTooLarge {
 			writeErrCode(w, status, "content_too_large", msg)
 		} else {
 			writeErrCode(w, status, "content_empty", msg)
 		}
 		return
 	}
 	// #86: bound free-form metadata at create time
 	if p.Title != nil {
 		t, err := checkTitle(*p.Title)
 		if err != nil {
 			writeErr(w, 400, err.Error())
 			return
 		}
 		p.Title = &t
 	}
 	if p.Language != nil {
 		l, err := checkLanguage(*p.Language)
 		if err != nil {
 			writeErr(w, 400, err.Error())
 			return
 		}
 		if l == "" {
 			p.Language = nil
 		} else {
 			p.Language = &l
 		}
 	}
 	if p.BurnAfterReads != nil { // #68: reject negative read budgets
 		if err := parseBurnAfterReads(*p.BurnAfterReads); err != nil {
 			writeErr(w, 400, err.Error())
@@ -179,9 +251,10 @@ func (a *apiServer) handleCreatePaste(w http.ResponseWriter, r *http.Request) {
 	p.ViewerID = currentViewerID(r)
 	created, err := a.store.CreatePaste(&p)
 	if err != nil {
-		writeErr(w, 400, err.Error())
+		writeErrCode(w, 400, createErrCode(err), err.Error())
 		return
 	}
 	setDeletionTokenCookie(w, created.ID, created.DeletionToken) // #143
 	writeJSON(w, 201, map[string]any{
 		"id":             created.ID,
 		"deletion_token": created.DeletionToken,
@@ -214,11 +287,17 @@ func (a *apiServer) handleGetPaste(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if row.PasswordHash.Valid {
 		// #81/#141: every password verification (header or empty) goes
 		// through the same per-IP+paste unlock limiter as the POST form
 		// path, so brute-force via X-Paste-Password gets 429. The
 		// ?password= query fallback was removed (#141): query strings
 		// leak into access logs, browser history, and Referer headers.
 		if !rateLimitUnlock(row.ID, r) {
 			writeRateLimited(w, 60)
 			return
 		}
 		// require password via header or query
 		pw := r.Header.Get("X-Paste-Password")
 		if pw == "" {
 			pw = r.URL.Query().Get("password")
 		}
 		if pw == "" || !store.CheckPassword(row.PasswordHash.String, pw) {
 			writeErr(w, 401, "password required")
 			return
@@ -246,9 +325,10 @@ func (a *apiServer) handleDeletePaste(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	// #63: deletion requires authorization. Either the deletion token issued
-	// at create time (Authorization header or ?token= query param, matching
+	// at create time (Authorization header; #143 removed the ?token= query
-	// the create response's "deletion_token" field), or the creator browser
+	// path so the bearer secret never lands in access logs or history), or
-	// itself (client-sent vwr cookie matching the paste's viewer, #37).
+	// the creator browser itself (client-sent vwr cookie matching the
 	// paste's viewer, #37).
 	if !a.deletionAuthorized(r, row) {
 		writeErr(w, 403, "deletion token required")
 		return
@@ -260,9 +340,11 @@ func (a *apiServer) handleDeletePaste(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, 200, map[string]string{"status": "soft-deleted"})
 }
-// deletionAuthorization extracts the deletion token from the request: the
+// deletionAuthorization extracts the deletion token from the request:
-// Authorization header ("Bearer <t>", "Token <t>", or a bare token) or the
+// the Authorization header ("Bearer <t>", "Token <t>", or a bare token).
-// token query parameter. Returns "" when absent.
+// The ?token= query parameter is deliberately NOT accepted (#143): URL
 // query strings end up in proxy access logs and browser history. Returns
 // "" when absent.
 func deletionAuthorization(r *http.Request) string {
 	if h := r.Header.Get("Authorization"); h != "" {
 		for _, prefix := range []string{"Bearer ", "Token "} {
@@ -272,7 +354,7 @@ func deletionAuthorization(r *http.Request) string {
 		}
 		return strings.TrimSpace(h)
 	}
-	return r.URL.Query().Get("token")
+	return ""
 }
 // deletionAuthorized reports whether the request may soft-delete the paste:
@@ -312,6 +394,7 @@ func (a *apiServer) handleListMine(w http.ResponseWriter, r *http.Request) {
 			"id": row.ID, "title": title, "language": lang,
 			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
 			"custom_slug": store.NullStrPtr(row.CustomSlug), "visibility": row.Visibility,
 			"is_can": row.IsCan,
 		})
 	}
 	writeJSON(w, 200, map[string]any{"total": total, "limit": limit, "offset": offset, "items": items})
@@ -332,6 +415,7 @@ func (a *apiServer) handleListPublic(w http.ResponseWriter, r *http.Request) {
 			"id": row.ID, "title": title, "language": lang,
 			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
 			"custom_slug": store.NullStrPtr(row.CustomSlug),
 			"is_can":      row.IsCan,
 		})
 	}
 	writeJSON(w, 200, map[string]any{"total": total, "limit": limit, "offset": offset, "items": items})
@@ -375,7 +459,7 @@ func (a *apiServer) handleRaw(w http.ResponseWriter, r *http.Request) {
 	}
 	w.Header().Set("Content-Type", ct)
 	w.Header().Set("X-Content-Type-Options", "nosniff")
-	a.store.IncrementViews(row.ID)
+	a.store.IncrementViews(row.ID, "", 0) // raw views always count (#49/#95)
 	w.Write([]byte(row.Content))
 }
@@ -404,13 +488,117 @@ func (a *apiServer) handleCanPage(w http.ResponseWriter, r *http.Request) {
 		http.NotFound(w, r)
 		return
 	}
-	items, _ := a.store.ListCanItems(can.ID)
+	if can.ExpiresAt.Valid && can.ExpiresAt.Int64 < time.Now().Unix() {
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		http.NotFound(w, r)
-	fmt.Fprintf(w, "<!doctype html><html><head><title>can/%s — palette</title></head><body><h1>can/%s</h1><ul>", can.ID, can.ID)
+		return
 	}
 	// #4: password-protected cans go through the same unlock flow as pastes:
 	// the pw_<id> cookie carries an HMAC token bound to this can id. Items
 	// inherit the protection (handleCanItem checks the same cookie).
 	if can.PasswordHash.Valid {
 		h := a.webHandlers()
 		if r.Method == http.MethodPost {
 			if !rateLimitUnlock(can.ID, r) {
 				h.WriteRateLimited(w, 60)
 				return
 			}
 			r.ParseForm()
 			pw := r.FormValue("password")
 			if pw != "" && store.CheckPassword(can.PasswordHash.String, pw) {
 				http.SetCookie(w, &http.Cookie{
 					Name: "pw_" + can.ID, Value: web.UnlockToken(can.ID), Path: "/",
 					MaxAge: 3600, HttpOnly: true, SameSite: http.SameSiteLaxMode,
 				})
 				a.renderCan(w, can)
 				return
 			}
 			h.RenderPage(w, "unlock.html", map[string]any{
 				"Page": "unlock", "ID": can.ID, "Wrong": true,
 				"CreatedAgo": web.AgoString(can.CreatedAt), "CreatedAtUnix": can.CreatedAt,
 			})
 			return
 		}
 		c, err := r.Cookie("pw_" + can.ID)
 		if err != nil || c.Value != web.UnlockToken(can.ID) {
 			h.RenderPage(w, "unlock.html", map[string]any{
 				"Page": "unlock", "ID": can.ID, "Wrong": false,
 				"CreatedAgo": web.AgoString(can.CreatedAt), "CreatedAtUnix": can.CreatedAt,
 			})
 			return
 		}
 	}
 	a.renderCan(w, can)
 }
 // renderCan renders the can view page: title/description and items as cards.
 // Text items expand inline; files link to download.
 func (a *apiServer) renderCan(w http.ResponseWriter, can *store.CanRow) {
 	h := a.webHandlers()
 	items, err := a.store.ListCanItems(can.ID)
 	if err != nil {
 		http.Error(w, "db error", 500)
 		return
 	}
 	type canItem struct {
 		ID          string
 		Title       string
 		ContentType string
 		Size        string
 		IsFile      bool
 		Content     string
 		ContentHTML template.HTML
 		Language    string
 	}
 	cards := make([]canItem, 0, len(items))
 	totalSize := 0
 	for _, it := range items {
-		fmt.Fprintf(w, `<li><a href="/api/cans/%s/items/%s">%s</a> (%s)</li>`, can.ID, it.ID, templateEsc(nullStrOr(it.Title, it.ID)), it.ContentType)
+		totalSize += len(it.Content)
 		isFile := it.ContentType != "text/plain" && !strings.HasPrefix(it.ContentType, "text/")
 		ci := canItem{
 			ID:          it.ID,
 			Title:       nullStrOr(it.Title, it.ID),
 			ContentType: it.ContentType,
 			Size:        web.HumanSize(len(it.Content)),
 			IsFile:      isFile,
 			Language:    it.Language.String,
 		}
 		if !isFile {
 			ci.ContentHTML = template.HTML(langpkg.HighlightCode(it.Content, it.Language.String))
 		}
 		cards = append(cards, ci)
 	}
 	h.RenderPage(w, "can.html", map[string]any{
 		"Page":           "can",
 		"ID":             can.ID,
 		"Title":          nullStrOr(can.Title, "Untitled can"),
 		"Description":    can.Description.String,
 		"HasDescription": can.Description.Valid && can.Description.String != "",
 		"HasPassword":    can.PasswordHash.Valid,
 		"Items":          cards,
 		"ItemCount":      len(cards),
 		"SizeHuman":      web.HumanSize(totalSize),
 		"CreatedAgo":     web.AgoString(can.CreatedAt),
 		"CreatedAtUnix":  can.CreatedAt,
 		"ExpiresAt":      can.ExpiresAt.Valid,
 		"ExpiresIn":      expiryStringIfValid(can.ExpiresAt),
 	})
 }
 // expiryStringIfValid formats remaining time for a valid expiry, "" otherwise.
 func expiryStringIfValid(ns sql.NullInt64) string {
 	if !ns.Valid {
 		return ""
 	}
 	remaining := ns.Int64 - time.Now().Unix()
 	s := remaining
 	switch {
 	case s < 3600:
 		return fmt.Sprintf("%dm", s/60)
 	case s < 86400:
 		return fmt.Sprintf("%dh", s/3600)
 	default:
 		return fmt.Sprintf("%dd", s/86400)
 	}
 	fmt.Fprintf(w, "</ul></body></html>")
 }
 func templateEsc(s string) string {
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
 	"regexp"
 	"strconv"
 	"strings"
 )
@@ -17,6 +18,10 @@ import (
 func (a *apiServer) maxRequestBody() int64 {
 	s := a.settings.get()
 	max := s.MaxContentBytes + 4096
 	// #38: multipart create carries up to one 25 MB file plus overhead
 	if a.cfg.MaxItemBytes+1<<20 > max {
 		max = a.cfg.MaxItemBytes + 1<<20
 	}
 	if max < 64*1024 {
 		max = 64 * 1024
 	}
@@ -90,3 +95,46 @@ func parseBurnAfterReads(n int) error {
 	}
 	return nil
 }
 // #86: bounds for free-form metadata fields on create.
 const (
 	maxTitleLen    = 200
 	maxLanguageLen = 40
 )
 // languageRe restricts language to identifiers like go, c#, f#, c++, objc.
 var languageRe = regexp.MustCompile(`^[a-zA-Z0-9+#-]{1,40}$`)
 // checkTitle validates the paste title (#86): over-max titles are truncated
 // to 200 characters so a bloated listing entry can't be stored; whitespace
 // is trimmed first.
 func checkTitle(title string) (string, error) {
 	title = strings.TrimSpace(title)
 	if len(title) > maxTitleLen {
 		return truncateRunes(title, maxTitleLen), nil
 	}
 	return title, nil
 }
 // checkLanguage validates the language field (#86): optional, max 40 chars,
 // and must match ^[a-zA-Z0-9+#-]{1,40}$. Returns "" for absent/blank values.
 // Anything else malformed is a 400.
 func checkLanguage(lang string) (string, error) {
 	lang = strings.TrimSpace(lang)
 	if lang == "" {
 		return "", nil
 	}
 	if len(lang) > maxLanguageLen || !languageRe.MatchString(lang) {
 		return "", fmt.Errorf("language must match ^[a-zA-Z0-9+#-]{1,40}$ (max %d chars)", maxLanguageLen)
 	}
 	return lang, nil
 }
 // truncateRunes cuts s to at most max runes, keeping the prefix intact.
 func truncateRunes(s string, max int) string {
 	runes := []rune(s)
 	if len(runes) <= max {
 		return s
 	}
 	return string(runes[:max])
 }
@@ -0,0 +1,121 @@
 package api
 import (
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"time"
 	"palette/internal/store"
 )
 // #95: HTML paste views dedupe per viewer (vwr cookie) within the burn viewer
 // window, reusing the paste_views table. Repeated views by the same viewer do
 // not inflate view_count; a different viewer counts.
 func TestHTMLViewsDedupedPerViewer(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(`{"content":"vd"}`))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	id := jsonField(t, rec.Body.String(), "id")
 	view := func(vwr string) {
 		req := httptest.NewRequest("GET", "/"+id, nil)
 		if vwr != "" {
 			req.AddCookie(&http.Cookie{Name: "vwr", Value: vwr})
 		}
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		if rec.Code != 200 {
 			t.Fatalf("view: got %d", rec.Code)
 		}
 	}
 	count := func() string {
 		req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		return rec.Body.String()
 	}
 	// same viewer (same cookie) renders twice: still 1 view
 	view("v-a")
 	view("v-a")
 	if got := count(); !strings.Contains(got, `"view_count":1`) {
 		t.Fatalf("expected view_count 1 after duplicate viewer views, got: %s", got)
 	}
 	// a different viewer counts
 	view("v-b")
 	if got := count(); !strings.Contains(got, `"view_count":2`) {
 		t.Fatalf("expected view_count 2 after second viewer, got: %s", got)
 	}
 	// viewer without cookie counts every time (plain API clients, #49 decision)
 	view("")
 	view("")
 	if got := count(); !strings.Contains(got, `"view_count":4`) {
 		t.Fatalf("expected view_count 4 after uncoookied views, got: %s", got)
 	}
 }
 // #95: raw views always count, even from a cookie-holding viewer (#49 decision).
 func TestRawViewsAlwaysCount(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(`{"content":"rv"}`))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	id := jsonField(t, rec.Body.String(), "id")
 	for i := 0; i < 3; i++ {
 		req := httptest.NewRequest("GET", "/raw/"+id, nil)
 		req.AddCookie(&http.Cookie{Name: "vwr", Value: "same-viewer"})
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		if rec.Code != 200 {
 			t.Fatalf("raw view: got %d", rec.Code)
 		}
 	}
 	req = httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if got := rec.Body.String(); !strings.Contains(got, `"view_count":3`) {
 		t.Fatalf("expected view_count 3 after 3 raw views by one viewer, got: %s", got)
 	}
 }
 // #95: after the dedupe window passes, the same viewer counts again.
 func TestViewDedupeWindowExpires(t *testing.T) {
 	s := testServer(t)
 	h := s.routes()
 	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(`{"content":"we"}`))
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	id := jsonField(t, rec.Body.String(), "id")
 	view := func() {
 		req := httptest.NewRequest("GET", "/"+id, nil)
 		req.AddCookie(&http.Cookie{Name: "vwr", Value: "v-w"})
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		if rec.Code != 200 {
 			t.Fatalf("view: got %d", rec.Code)
 		}
 	}
 	view()
 	view()
 	// jump past the 15-minute window
 	realNow := store.TimeNow
 	store.TimeNow = func() time.Time { return realNow().Add(16 * time.Minute) }
 	defer func() { store.TimeNow = realNow }()
 	view()
 	req = httptest.NewRequest("GET", "/api/pastes/"+id, nil)
 	rec = httptest.NewRecorder()
 	h.ServeHTTP(rec, req)
 	if got := rec.Body.String(); !strings.Contains(got, `"view_count":2`) {
 		t.Fatalf("expected view_count 2 after window expiry, got: %s", got)
 	}
 }
@@ -0,0 +1,147 @@
 package store
 import (
 	"crypto/sha256"
 	"database/sql"
 	"errors"
 	"fmt"
 	"path/filepath"
 	"strings"
 	"time"
 )
 // #38: file attachments, one file per paste (iteration 1). A paste either
 // has text content OR one attached file. Bytes live in the BlobStore; this
 // table carries the metadata.
 type Attachment struct {
 	ID        string `json:"id"`
 	PasteID   string `json:"paste_id"`
 	Filename  string `json:"filename"`
 	Mime      string `json:"mime"`
 	Size      int64  `json:"size"`
 	SHA256    string `json:"sha256"`
 	CreatedAt int64  `json:"created_at"`
 	SizeHuman string `json:"-"` // template-only: human-readable size
 }
 const MaxFilenameLen = 255
 // ErrFileTooLarge is returned when an attachment exceeds the per-file cap.
 var ErrFileTooLarge = errors.New("file too large")
 // SanitizeFilename cleans a user-supplied filename: strips directory
 // components, control chars, and caps at 255 bytes. The extension is never
 // trusted for mime decisions (mime is sniffed server-side).
 func SanitizeFilename(name string) string {
 	name = filepath.Base(strings.ReplaceAll(name, "\\", "/"))
 	name = strings.TrimSpace(name)
 	var b strings.Builder
 	for _, r := range name {
 		if r < 32 || r == 127 {
 			continue
 		}
 		b.WriteRune(r)
 	}
 	name = b.String()
 	if len(name) > MaxFilenameLen {
 		runes := []rune(name)
 		for len(string(runes)) > MaxFilenameLen {
 			runes = runes[:len(runes)-1]
 		}
 		name = string(runes)
 	}
 	if name == "" || name == "." || name == ".." {
 		name = "file"
 	}
 	return name
 }
 // CreateAttachment stores the file bytes and inserts the attachments row.
 // The mime MUST already be sniffed server-side (http.DetectContentType by
 // the caller); it is never taken from the client.
 func (s *Store) CreateAttachment(a *Attachment, r interface{ Read([]byte) (int, error) }, blobs BlobStore) error {
 	pasteID := a.PasteID
 	sha, size, err := blobs.Put(pasteID+"/pending", r)
 	if err != nil {
 		return err
 	}
 	if a.Size > 0 && size > a.Size {
 		// caller-provided pre-check limit; treat as too large
 		blobs.Delete(pasteID + "/" + sha)
 		return ErrFileTooLarge
 	}
 	a.SHA256 = sha
 	a.Size = size
 	now := time.Now().Unix()
 	id := genSlug(20)
 	_, err = s.db.Exec(`INSERT INTO attachments (id, paste_id, filename, mime, size, sha256, created_at)
 		VALUES (?,?,?,?,?,?,?)`, id, pasteID, a.Filename, a.Mime, size, sha, now)
 	if err != nil {
 		blobs.Delete(pasteID + "/" + sha)
 		return err
 	}
 	a.ID = id
 	a.CreatedAt = now
 	return nil
 }
 // GetAttachment returns the attachment row for a paste, or nil.
 // One file per paste (iteration 1), so a single-row lookup keyed on paste.
 func (s *Store) GetAttachmentForPaste(pasteID string) (*Attachment, error) {
 	row := s.db.QueryRow(`SELECT id, paste_id, filename, mime, size, sha256, created_at
 		FROM attachments WHERE paste_id = ? ORDER BY created_at ASC LIMIT 1`, pasteID)
 	return scanAttachment(row)
 }
 func (s *Store) GetAttachment(id string) (*Attachment, error) {
 	row := s.db.QueryRow(`SELECT id, paste_id, filename, mime, size, sha256, created_at
 		FROM attachments WHERE id = ?`, id)
 	return scanAttachment(row)
 }
 func scanAttachment(row *sql.Row) (*Attachment, error) {
 	var a Attachment
 	err := row.Scan(&a.ID, &a.PasteID, &a.Filename, &a.Mime, &a.Size, &a.SHA256, &a.CreatedAt)
 	if err == sql.ErrNoRows {
 		return nil, nil
 	}
 	if err != nil {
 		return nil, err
 	}
 	a.SizeHuman = humanBytes(a.Size)
 	return &a, nil
 }
 // humanBytes formats a byte count for display (KB/MB).
 func humanBytes(n int64) string {
 	switch {
 	case n >= 1<<20:
 		return fmt.Sprintf("%.1f MB", float64(n)/(1<<20))
 	case n >= 1<<10:
 		return fmt.Sprintf("%.1f KB", float64(n)/(1<<10))
 	default:
 		return fmt.Sprintf("%d B", n)
 	}
 }
 // DeleteAttachment removes the row and its blob.
 func (s *Store) DeleteAttachment(a *Attachment, blobs BlobStore) error {
 	blobs.Delete(a.PasteID + "/" + a.SHA256)
 	_, err := s.db.Exec(`DELETE FROM attachments WHERE id = ?`, a.ID)
 	return err
 }
 // HasAttachment reports whether a paste already carries a file (#38: one file per paste).
 func (s *Store) HasAttachment(pasteID string) bool {
 	var n int
 	s.db.QueryRow(`SELECT COUNT(*) FROM attachments WHERE paste_id = ?`, pasteID).Scan(&n)
 	return n > 0
 }
 // HashBytes is a small helper used by handlers to name/verify blobs.
 func HashBytes(b []byte) string {
 	h := sha256.Sum256(b)
 	return string(h[:])
 }
@@ -0,0 +1,139 @@
 package store
 import (
 	"crypto/sha256"
 	"encoding/hex"
 	"errors"
 	"fmt"
 	"io"
 	"os"
 	"path/filepath"
 	"strings"
 )
 // #38: blob storage abstraction. Files live outside SQLite on the data
 // volume behind this interface so a MinIO/S3 backend can replace the fs
 // implementation later without touching handlers or the UI.
 // ErrBlobNotFound is returned by Get/Stat when the key does not exist.
 var ErrBlobNotFound = errors.New("blob not found")
 // BlobStore persists attachment bytes by key.
 type BlobStore interface {
 	Put(key string, r io.Reader) (sha string, size int64, err error)
 	Get(key string) (io.ReadSeekCloser, error)
 	Delete(key string) error
 	Stat(key string) (int64, error)
 }
 // FsBlobStore is the filesystem implementation: blobs are stored under
 // root/<key>, where key is "<paste-id>/<sha256-hex>" (see SanitizeBlobKey).
 type FsBlobStore struct {
 	root string
 }
 // NewFsBlobStore creates the blob root directory.
 func NewFsBlobStore(root string) (*FsBlobStore, error) {
 	if err := os.MkdirAll(root, 0o700); err != nil {
 		return nil, err
 	}
 	return &FsBlobStore{root: root}, nil
 }
 // SanitizeBlobKey validates a blob key and returns the safe on-disk path
 // under root. Keys must be exactly "<paste-id>/<sha256-hex>"; anything with
 // separators outside that shape, "..", or absolute paths is rejected, so a
 // crafted key can never escape the blob root (traversal).
 func (f *FsBlobStore) path(key string) (string, error) {
 	clean := filepath.ToSlash(key)
 	parts := strings.Split(clean, "/")
 	if len(parts) != 2 || parts[0] == "" || parts[1] == "" ||
 		parts[0] == "." || parts[0] == ".." || parts[1] == "." || parts[1] == ".." {
 		return "", fmt.Errorf("invalid blob key %q", key)
 	}
 	return filepath.Join(f.root, filepath.FromSlash(clean)), nil
 }
 func (f *FsBlobStore) Put(key string, r io.Reader) (string, int64, error) {
 	dst, err := f.path(key)
 	if err != nil {
 		return "", 0, err
 	}
 	if err := os.MkdirAll(filepath.Dir(dst), 0o700); err != nil {
 		return "", 0, err
 	}
 	h := sha256.New()
 	tmp := dst + ".tmp"
 	out, err := os.OpenFile(tmp, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o600)
 	if err != nil {
 		return "", 0, err
 	}
 	size, err := io.Copy(io.MultiWriter(out, h), r)
 	if cerr := out.Close(); err == nil {
 		err = cerr
 	}
 	if err != nil {
 		os.Remove(tmp)
 		return "", 0, err
 	}
 	sha := hex.EncodeToString(h.Sum(nil))
 	// The caller-supplied key must match the content hash; rename to the
 	// canonical "<paste-id>/<sha256>" path so keys are always content-derived.
 	canonical, err := f.path(key[:strings.IndexByte(key, '/')] + "/" + sha)
 	if err != nil {
 		os.Remove(tmp)
 		return "", 0, err
 	}
 	if err := os.MkdirAll(filepath.Dir(canonical), 0o700); err != nil {
 		os.Remove(tmp)
 		return "", 0, err
 	}
 	if err := os.Rename(tmp, canonical); err != nil {
 		os.Remove(tmp)
 		return "", 0, err
 	}
 	return sha, size, nil
 }
 func (f *FsBlobStore) Get(key string) (io.ReadSeekCloser, error) {
 	dst, err := f.path(key)
 	if err != nil {
 		return nil, err
 	}
 	file, err := os.Open(dst)
 	if os.IsNotExist(err) {
 		return nil, ErrBlobNotFound
 	}
 	return file, err
 }
 func (f *FsBlobStore) Delete(key string) error {
 	dst, err := f.path(key)
 	if err != nil {
 		return err
 	}
 	err = os.Remove(dst)
 	if os.IsNotExist(err) {
 		return ErrBlobNotFound
 	}
 	if err == nil {
 		// best-effort cleanup of the now-empty paste directory
 		os.Remove(filepath.Dir(dst))
 	}
 	return err
 }
 func (f *FsBlobStore) Stat(key string) (int64, error) {
 	dst, err := f.path(key)
 	if err != nil {
 		return 0, err
 	}
 	fi, err := os.Stat(dst)
 	if os.IsNotExist(err) {
 		return 0, ErrBlobNotFound
 	}
 	if err != nil {
 		return 0, err
 	}
 	return fi.Size(), nil
 }
@@ -0,0 +1,108 @@
 package store
 import (
 	"strings"
 	"testing"
 )
 func testBlobs(t *testing.T) *FsBlobStore {
 	t.Helper()
 	b, err := NewFsBlobStore(t.TempDir() + "/files")
 	if err != nil {
 		t.Fatal(err)
 	}
 	return b
 }
 func TestBlobPutGetStatDeleteRoundtrip(t *testing.T) {
 	b := testBlobs(t)
 	data := []byte("hello attachment world")
 	sha, size, err := b.Put("abc123/pending", strings.NewReader(string(data)))
 	if err != nil {
 		t.Fatal(err)
 	}
 	if size != int64(len(data)) {
 		t.Fatalf("size = %d want %d", size, len(data))
 	}
 	if len(sha) != 64 {
 		t.Fatalf("sha256 = %q", sha)
 	}
 	// canonical key is <paste-id>/<sha256>
 	got, err := b.Get("abc123/" + sha)
 	if err != nil {
 		t.Fatal(err)
 	}
 	buf := make([]byte, len(data)+10)
 	n, _ := got.Read(buf)
 	got.Close()
 	if string(buf[:n]) != string(data) {
 		t.Fatalf("roundtrip mismatch: %q", buf[:n])
 	}
 	sz, err := b.Stat("abc123/" + sha)
 	if err != nil || sz != int64(len(data)) {
 		t.Fatalf("stat = %d, %v", sz, err)
 	}
 	if err := b.Delete("abc123/" + sha); err != nil {
 		t.Fatalf("delete: %v", err)
 	}
 	if _, err := b.Get("abc123/" + sha); err != ErrBlobNotFound {
 		t.Fatalf("get after delete: %v", err)
 	}
 }
 func TestBlobStatMissing(t *testing.T) {
 	b := testBlobs(t)
 	if _, err := b.Stat("nope/deadbeef"); err != ErrBlobNotFound {
 		t.Fatalf("want ErrBlobNotFound, got %v", err)
 	}
 }
 func TestBlobTraversalPrevention(t *testing.T) {
 	b := testBlobs(t)
 	evil := []string{
 		"../../etc/passwd",
 		"../escape",
 		"..\\windows",
 		"/abs/path",
 		"a/b/c",           // too many segments
 		"onlyone",         // no slash
 		"./relative",      // dot segment
 		"../..",           // bare traversal
 		"ok/../traverse",  // traversal inside
 	}
 	for _, key := range evil {
 		if _, _, err := b.Put(key, strings.NewReader("x")); err == nil {
 			t.Errorf("Put accepted evil key %q", key)
 		}
 		if _, err := b.Get(key); err == nil {
 			t.Errorf("Get accepted evil key %q", key)
 		}
 		if err := b.Delete(key); err == nil {
 			t.Errorf("Delete accepted evil key %q", key)
 		}
 	}
 }
 func TestSanitizeFilename(t *testing.T) {
 	cases := [][2]string{
 		{"../../etc/passwd", "passwd"},
 		{"C:\\Users\\evil\\file.txt", "file.txt"},
 		{"normal.txt", "normal.txt"},
 		{"a<b>c", "a<b>c"},
 		{"", "file"},
 		{"..", "file"},
 		{".hidden", ".hidden"},
 		{"with\x00null.txt", "withnull.txt"},
 		{"new\nline.txt", "newline.txt"},
 	}
 	for _, c := range cases {
 		got := SanitizeFilename(c[0])
 		if got != c[1] {
 			t.Errorf("SanitizeFilename(%q) = %q want %q", c[0], got, c[1])
 		}
 	}
 	long := strings.Repeat("x", 300)
 	if got := SanitizeFilename(long); len(got) != MaxFilenameLen {
 		t.Errorf("long name len = %d want %d", len(got), MaxFilenameLen)
 	}
 }
@@ -30,6 +30,8 @@ type Paste struct {
 	BurnAfterRead bool  `json:"burn_after_read,omitempty"`
 	BurnAfterReads *int `json:"burn_after_reads,omitempty"` // #49: readable N times (default 1)
 	Visibility  string  `json:"visibility"`
 	// #83: accept "public": true/false as an alias for visibility.
 	Public *bool `json:"public,omitempty"`
 	CanID       *string `json:"can_id,omitempty"`
 	CreatedAt   int64   `json:"created_at"`
 	DeletedAt   *int64  `json:"deleted_at,omitempty"`
@@ -60,6 +62,7 @@ type PasteRow struct {
 	Size          int
 	DeletionToken sql.NullString
 	ViewerID      sql.NullString
 	IsCan         bool // set on list rows that are cans (#4)
 }
 type CanRow struct {
@@ -70,10 +73,13 @@ type CanRow struct {
 	CreatedAt    int64
 	DeletedAt    sql.NullInt64
 	ExpiresAt    sql.NullInt64
 	Description  sql.NullString
 	ViewerID     sql.NullString
 }
 type Store struct {
 	db   *sql.DB
 	blob BlobStore // #38: attachment byte storage (nil in some unit tests)
 }
 func OpenStore(path string) (*Store, error) {
@@ -90,6 +96,12 @@ func OpenStore(path string) (*Store, error) {
 	if err := s.migrate(); err != nil {
 		return nil, err
 	}
 	// #38: attachment blobs live beside the database under <db>.files
 	blobs, err := NewFsBlobStore(path + ".files")
 	if err != nil {
 		return nil, err
 	}
 	s.blob = blobs
 	return s, nil
 }
@@ -130,15 +142,33 @@ deletion_token TEXT
 	s.db.Exec(`ALTER TABLE pastes ADD COLUMN viewer_id TEXT`)     // ignore if exists (#37)
 	s.db.Exec(`ALTER TABLE pastes ADD COLUMN reads_limit INTEGER`)          // ignore if exists (#49)
 	s.db.Exec(`ALTER TABLE pastes ADD COLUMN reads_used INTEGER DEFAULT 0`) // ignore if exists (#49)
 	s.db.Exec(`ALTER TABLE paste_cans ADD COLUMN viewer_id TEXT`) // ignore if exists (#4)
 	s.db.Exec(`CREATE TABLE IF NOT EXISTS paste_views (
 		paste_id    TEXT NOT NULL,
 		viewer_id   TEXT NOT NULL,
 		last_viewed INTEGER NOT NULL,
 		PRIMARY KEY (paste_id, viewer_id)
 	)`) // #49: per-viewer read dedupe window
 	// #38: file attachments, one per paste in iteration 1. mime is sniffed
 	// server-side before insert; bytes live in the BlobStore keyed
 	// <paste_id>/<sha256>.
 	s.db.Exec(`CREATE TABLE IF NOT EXISTS attachments (
 		id         TEXT PRIMARY KEY,
 		paste_id   TEXT NOT NULL,
 		filename   TEXT NOT NULL,
 		mime       TEXT NOT NULL,
 		size       INTEGER NOT NULL,
 		sha256     TEXT NOT NULL,
 		created_at INTEGER NOT NULL
 	)`)
 	s.db.Exec(`CREATE INDEX IF NOT EXISTS idx_attachments_paste ON attachments(paste_id)`)
 	return err
 }
 // Blobs returns the attachment blob store (nil when unavailable, e.g. some
 // unit-test stores).
 func (s *Store) Blobs() BlobStore { return s.blob }
 // SlugAlphabet is the paste-id charset (no ambiguous chars).
 var SlugAlphabet = "23456789abcdefghjkmnpqrstuvwxyz"
@@ -205,16 +235,28 @@ func (s *Store) CreatePaste(p *Paste) (*Paste, error) {
 		}
 	}
-	// #49: burn-after-read pastes carry a read budget (default 1 read)
+	// #49/#82: burn-after-read pastes carry a read budget (default 1 read).
-	if p.BurnAfterRead {
+	// burn_after_reads > 0 alone implies burn mode even without burn_after_read.
 	if p.BurnAfterRead || (p.BurnAfterReads != nil && *p.BurnAfterReads > 0) {
 		limit := int64(1)
 		if p.BurnAfterReads != nil && *p.BurnAfterReads > 0 {
 			limit = int64(*p.BurnAfterReads)
 		}
 		p.readsLimit = &limit
 		if !p.BurnAfterRead {
 			p.BurnAfterRead = true
 		}
 	}
 	visibility := p.Visibility
 	// #83: "public": false -> unlisted, true -> public; overrides string field
 	if p.Public != nil {
 		if *p.Public {
 			visibility = "public"
 		} else {
 			visibility = "unlisted"
 		}
 	}
 	if visibility == "" {
 		visibility = "public"
 	}
@@ -262,9 +304,14 @@ func (s *Store) GetPaste(idOrSlug string) (*PasteRow, error) {
 // listed, and password-protected pastes are excluded at the query level
 // (#65) so their metadata (title, slug, existence) never leaks.
 func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
-	rows, err := s.db.Query(`SELECT id, custom_slug, content_type, language, title, visibility, created_at, view_count, LENGTH(content) FROM pastes
+	rows, err := s.db.Query(`SELECT id, custom_slug, content_type, language, title, visibility, created_at, view_count, LENGTH(content), 0
 		FROM pastes
 		WHERE visibility='public' AND deleted_at IS NULL AND can_id IS NULL AND password_hash IS NULL AND (expires_at IS NULL OR expires_at > ?)
-		ORDER BY created_at DESC LIMIT ? OFFSET ?`, time.Now().Unix(), limit, offset)
+		UNION ALL
 		SELECT id, NULL, 'text/plain', NULL, title, visibility, created_at, 0, 0, 1
 		FROM paste_cans
 		WHERE visibility='public' AND deleted_at IS NULL AND (expires_at IS NULL OR expires_at > ?)
 		ORDER BY created_at DESC LIMIT ? OFFSET ?`, time.Now().Unix(), time.Now().Unix(), limit, offset)
 	if err != nil {
 		return nil, 0, err
 	}
@@ -273,25 +320,33 @@ func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
 	for rows.Next() {
 		var r PasteRow
 		var cs, lang, title sql.NullString
-		if err := rows.Scan(&r.ID, &cs, &r.ContentType, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size); err != nil {
+		var isCan int
 		if err := rows.Scan(&r.ID, &cs, &r.ContentType, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan); err != nil {
 			return nil, 0, err
 		}
 		r.CustomSlug = cs
 		r.Language = lang
 		r.Title = title
 		r.IsCan = isCan == 1
 		out = append(out, r)
 	}
 	var total int
-	s.db.QueryRow(`SELECT COUNT(*) FROM pastes WHERE visibility='public' AND deleted_at IS NULL AND can_id IS NULL AND password_hash IS NULL AND (expires_at IS NULL OR expires_at > ?)`, time.Now().Unix()).Scan(&total)
+	s.db.QueryRow(`SELECT (SELECT COUNT(*) FROM pastes WHERE visibility='public' AND deleted_at IS NULL AND can_id IS NULL AND password_hash IS NULL AND (expires_at IS NULL OR expires_at > ?))
 		+ (SELECT COUNT(*) FROM paste_cans WHERE visibility='public' AND deleted_at IS NULL AND (expires_at IS NULL OR expires_at > ?))`,
 		time.Now().Unix(), time.Now().Unix()).Scan(&total)
 	return out, total, nil
 }
 // ListMine lists pastes created from the given viewer id (browser cookie), newest first.
 func (s *Store) ListMine(viewerID string, limit, offset int) ([]PasteRow, int, error) {
-	rows, err := s.db.Query(`SELECT id, custom_slug, language, title, visibility, created_at, view_count, LENGTH(content)
+	rows, err := s.db.Query(`SELECT id, custom_slug, language, title, visibility, created_at, view_count, LENGTH(content), 0
 		FROM pastes
 		WHERE viewer_id = ? AND deleted_at IS NULL AND can_id IS NULL AND (expires_at IS NULL OR expires_at > ?)
-		ORDER BY created_at DESC LIMIT ? OFFSET ?`, viewerID, time.Now().Unix(), limit, offset)
+		UNION ALL
 		SELECT id, NULL, NULL, title, visibility, created_at, 0, 0, 1
 		FROM paste_cans
 		WHERE viewer_id = ? AND deleted_at IS NULL AND (expires_at IS NULL OR expires_at > ?)
 		ORDER BY created_at DESC LIMIT ? OFFSET ?`, viewerID, time.Now().Unix(), viewerID, time.Now().Unix(), limit, offset)
 	if err != nil {
 		return nil, 0, err
 	}
@@ -300,16 +355,18 @@ func (s *Store) ListMine(viewerID string, limit, offset int) ([]PasteRow, int, e
 	for rows.Next() {
 		var r PasteRow
 		var cs, lang, title sql.NullString
-		if err := rows.Scan(&r.ID, &cs, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size); err != nil {
+		var isCan int
 		if err := rows.Scan(&r.ID, &cs, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan); err != nil {
 			return nil, 0, err
 		}
 		r.CustomSlug, r.Language, r.Title = cs, lang, title
 		r.IsCan = isCan == 1
 		out = append(out, r)
 	}
 	var total int
-	s.db.QueryRow(`SELECT COUNT(*) FROM pastes
+	s.db.QueryRow(`SELECT (SELECT COUNT(*) FROM pastes WHERE viewer_id = ? AND deleted_at IS NULL AND can_id IS NULL AND (expires_at IS NULL OR expires_at > ?))
-		WHERE viewer_id = ? AND deleted_at IS NULL AND can_id IS NULL AND (expires_at IS NULL OR expires_at > ?)`,
+		+ (SELECT COUNT(*) FROM paste_cans WHERE viewer_id = ? AND deleted_at IS NULL AND (expires_at IS NULL OR expires_at > ?))`,
-		viewerID, time.Now().Unix()).Scan(&total)
+		viewerID, time.Now().Unix(), viewerID, time.Now().Unix()).Scan(&total)
 	return out, total, nil
 }
@@ -342,14 +399,38 @@ func (s *Store) SoftDelete(id string) (bool, error) {
 	return n > 0, err
 }
-func (s *Store) IncrementViews(id string) {
+// IncrementViews counts one view. With a viewerID (#95): views are deduped
 // per-viewer within burnViewerWindow minutes using the paste_views table,
 // namespaced with a "views/" viewer prefix so these rows never collide with
 // RegisterRead's burn-after-read dedupe rows (which key on the raw viewer id).
 // Raw views always count (#49 decision) — call with viewerID="" for those.
 // Returns true when the view was counted.
 func (s *Store) IncrementViews(id, viewerID string, burnWindowMinutes int) bool {
 	if viewerID == "" {
 		s.db.Exec(`UPDATE pastes SET view_count = view_count + 1 WHERE id = ?`, id)
 		return true
 	}
 	now := TimeNow().Unix()
 	vkey := "views/" + viewerID
 	var last sql.NullInt64
 	s.db.QueryRow(`SELECT last_viewed FROM paste_views WHERE paste_id=? AND viewer_id=?`,
 		id, vkey).Scan(&last)
 	if last.Valid && now-last.Int64 < int64(burnWindowMinutes)*60 {
 		return false
 	}
 	s.db.Exec(`INSERT INTO paste_views (paste_id, viewer_id, last_viewed) VALUES (?,?,?)
 		ON CONFLICT(paste_id, viewer_id) DO UPDATE SET last_viewed = excluded.last_viewed`,
 		id, vkey, now)
 	s.db.Exec(`UPDATE pastes SET view_count = view_count + 1 WHERE id = ?`, id)
 	return true
 }
 // SweepExpired soft-deletes expired pastes and hard-deletes soft-deleted pastes past grace.
 func (s *Store) SweepExpired() {
 	now := time.Now().Unix()
 	s.db.Exec(`UPDATE pastes SET deleted_at=? WHERE expires_at IS NOT NULL AND expires_at < ? AND deleted_at IS NULL`, now, now)
 	// #4: cans expire too — mirror paste behavior
 	s.db.Exec(`UPDATE paste_cans SET deleted_at=? WHERE expires_at IS NOT NULL AND expires_at < ? AND deleted_at IS NULL`, now, now)
 	grace := now - SoftDeleteGraceDays*86400
 	s.db.Exec(`DELETE FROM pastes WHERE deleted_at IS NOT NULL AND deleted_at < ?`, grace)
 }
@@ -406,13 +487,46 @@ func (s *Store) HardDelete(id string) {
 	s.db.Exec(`DELETE FROM pastes WHERE id = ?`, id)
 }
-// InsertCan creates a paste_can row.
+// CreateCan inserts a paste_can row with optional custom slug (parity with
-func (s *Store) InsertCan(canID, title, description, visibility string, pwHash *string, createdAt int64, expiresAt *int64) error {
+// pastes: validated by the same rules, checked against both tables).
 // Returns ErrSlugTaken / ErrInvalidSlug / ErrReservedSlug on conflict.
 func (s *Store) CreateCan(canID, title, description, visibility string, pwHash *string, createdAt int64, expiresAt *int64, customSlug *string) error {
 	if customSlug != nil && *customSlug != "" {
 		slug := *customSlug
 		if err := ValidateCustomSlug(slug); err != nil {
 			return err
 		}
 		taken, err := s.SlugTaken(slug)
 		if err != nil {
 			return err
 		}
 		if taken {
 			return ErrSlugTaken
 		}
 		canID = slug
 	}
 	if visibility == "" {
 		visibility = "public"
 	}
 	if visibility != "public" && visibility != "unlisted" {
 		return errors.New("visibility must be public or unlisted")
 	}
 	_, err := s.db.Exec(`INSERT INTO paste_cans (id, title, description, visibility, password_hash, created_at, expires_at)
 		VALUES (?,?,?,?,?,?,?)`, canID, title, description, visibility, pwHash, createdAt, expiresAt)
 	return err
 }
 // SoftDeleteCan marks a can deleted (its items stay; they are unlisted and
 // hidden from listings by can_id and disappear with the can's page).
 func (s *Store) SoftDeleteCan(canID string) (bool, error) {
 	res, err := s.db.Exec(`UPDATE paste_cans SET deleted_at=? WHERE id=? AND deleted_at IS NULL`, time.Now().Unix(), canID)
 	if err != nil {
 		return false, err
 	}
 	n, err := res.RowsAffected()
 	return n > 0, err
 }
 // DeleteCan removes an (empty/aborted) can row.
 func (s *Store) DeleteCan(canID string) {
 	s.db.Exec(`DELETE FROM paste_cans WHERE id=?`, canID)
@@ -431,10 +545,10 @@ func (s *Store) InsertCanItem(canID, title, content, contentType string, languag
 }
 func (s *Store) GetCan(id string) (*CanRow, error) {
-	row := s.db.QueryRow(`SELECT id, title, visibility, password_hash, created_at, deleted_at, expires_at
+	row := s.db.QueryRow(`SELECT id, title, visibility, password_hash, created_at, deleted_at, expires_at, description, viewer_id
-		FROM paste_cans WHERE id = ? AND deleted_at IS NULL`, id)
+		FROM paste_cans WHERE (id = ?) AND deleted_at IS NULL`, id)
 	var c CanRow
-	err := row.Scan(&c.ID, &c.Title, &c.Visibility, &c.PasswordHash, &c.CreatedAt, &c.DeletedAt, &c.ExpiresAt)
+	err := row.Scan(&c.ID, &c.Title, &c.Visibility, &c.PasswordHash, &c.CreatedAt, &c.DeletedAt, &c.ExpiresAt, &c.Description, &c.ViewerID)
 	if err == sql.ErrNoRows {
 		return nil, nil
 	}
@@ -0,0 +1,56 @@
 package web
 import (
 	"embed"
 	"io/fs"
 	"regexp"
 	"strings"
 	"testing"
 )
 // #139 regression guards: with CSP script-src/style-src 'self' (no
 // 'unsafe-inline'), the templates must not carry inline <script> blocks or
 // style="" attributes, and the external scripts referenced must exist.
 func TestNoInlineScripts(t *testing.T) {
 	entries, err := fs.ReadDir(tmplFS, "templates")
 	if err != nil {
 		t.Fatal(err)
 	}
 	re := regexp.MustCompile(`(?s)<script[^>]*>.*?</script>`)
 	srcOnly := regexp.MustCompile(`<script[^>]+src=`)
 	for _, e := range entries {
 		b, err := fs.ReadFile(tmplFS, "templates/"+e.Name())
 		if err != nil {
 			t.Fatal(err)
 		}
 		for _, m := range re.FindAll(b, -1) {
 			if srcOnly.Match(m) {
 				continue // external script tag with src: fine
 			}
 			t.Errorf("%s: inline <script> block found (CSP #139): %q", e.Name(), string(m[:60]))
 		}
 		if strings.Contains(string(b), " onclick=") || strings.Contains(string(b), "onload=") {
 			t.Errorf("%s: inline event handler attribute found (CSP #139)", e.Name())
 		}
 		if strings.Contains(string(b), "style=\"") {
 			t.Errorf("%s: inline style attribute found (CSP #139)", e.Name())
 		}
 	}
 }
 func TestReferencedStaticScriptsExist(t *testing.T) {
 	entries, _ := fs.ReadDir(tmplFS, "templates")
 	var staticFiles embed.FS = staticFS
 	for _, e := range entries {
 		b, err := fs.ReadFile(tmplFS, "templates/"+e.Name())
 		if err != nil {
 			t.Fatal(err)
 		}
 		for _, m := range regexp.MustCompile(`<script src="/static/([^"]+)"`).FindAllSubmatch(b, -1) {
 			name := string(m[1])
 			if _, err := fs.ReadFile(staticFiles, "static/"+name); err != nil {
 				t.Errorf("%s references /static/%s: %v", e.Name(), name, err)
 			}
 		}
 	}
 }
@@ -3,7 +3,6 @@ package web
 import (
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 )
@@ -17,7 +16,7 @@ func TestSecurityHeaders(t *testing.T) {
 	h := SecurityHeaders(pages)
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, httptest.NewRequest("GET", "/", nil))
-	wantCSP := "default-src 'self'; script-src 'self' 'unsafe-inline'; frame-ancestors 'none'"
+	wantCSP := "default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; frame-ancestors 'none'"
 	if got := rec.Header().Get("Content-Security-Policy"); got != wantCSP {
 		t.Errorf("CSP = %q, want %q", got, wantCSP)
 	}
@@ -28,29 +27,20 @@ func TestSecurityHeaders(t *testing.T) {
 		t.Errorf("X-Content-Type-Options = %q, want nosniff", got)
 	}
-	// JSON response: no security headers.
+	// JSON/raw responses: headers are now set unconditionally BEFORE the handler
 	// runs. The previous post-handler approach was silently dropped once a page
 	// handler flushed its template output (headers must be set before WriteHeader).
 	// CSP/nosniff/referrer on non-HTML bodies is harmless and desirable.
 	jsonh := SecurityHeaders(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		w.Write([]byte(`{"ok":true}`))
 	}))
 	rec = httptest.NewRecorder()
 	jsonh.ServeHTTP(rec, httptest.NewRequest("GET", "/api/x", nil))
-	if got := rec.Header().Get("Content-Security-Policy"); got != "" {
+	if got := rec.Header().Get("Content-Security-Policy"); got != wantCSP {
-		t.Errorf("unexpected CSP %q on JSON response", got)
+		t.Errorf("CSP missing on JSON response: got %q", got)
 	}
-	if got := rec.Header().Get("Referrer-Policy"); got != "" {
+	if got := rec.Header().Get("Referrer-Policy"); got != "no-referrer" {
-		t.Errorf("unexpected Referrer-Policy %q on JSON response", got)
+		t.Errorf("Referrer-Policy missing on JSON response: got %q", got)
 	}
 	// Content type set after the first Write (as the inline can page does) is
 	// still picked up because headers are inspected post-handler.
 	lateh := SecurityHeaders(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Write([]byte("<html></html>"))
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")
 	}))
 	rec = httptest.NewRecorder()
 	lateh.ServeHTTP(rec, httptest.NewRequest("GET", "/", nil))
 	if got := rec.Header().Get("Content-Security-Policy"); !strings.Contains(got, "frame-ancestors 'none'") {
 		t.Errorf("CSP = %q, want frame-ancestors 'none'", got)
 	}
 }
@@ -0,0 +1,74 @@
 // #99/#139: admin lock + settings panel. Key lives in sessionStorage for this visit only.
 (function () {
  var KEY = 'palette_admin_key';
  var keyInput = document.getElementById('admin-key');
  var status = document.getElementById('admin-key-status');
  var panel = document.getElementById('admin-panel');
  function key() { return sessionStorage.getItem(KEY) || ''; }
  function api(path, opts) {
    opts = opts || {};
    // allow callers to override the key header (e.g. validating a typed key, #99)
    opts.headers = Object.assign({ 'X-Admin-Key': key() }, opts.headers || {});
    if (opts.body) opts.headers['Content-Type'] = 'application/json';
    return fetch(path, opts);
  }
  function loadSettings() {
    api('/admin/api/settings').then(function (r) {
      if (r.status !== 200) { showLock(); return; }
      return r.json();
    }).then(function (s) {
      if (!s) return;
      document.getElementById('rl-burst').value = s.rate_limit_burst;
      document.getElementById('rl-refill').value = s.rate_limit_per_minute;
      document.getElementById('max-content').value = s.max_content_bytes;
      document.getElementById('default-expiry').value = s.default_expiry;
      document.getElementById('slug-days').value = s.custom_slug_reservation_days;
      document.getElementById('burn-window').value = s.burn_viewer_window_minutes;
      panel.classList.remove('hidden');
    });
  }
  function showLock() {
    panel.classList.add('hidden');
    sessionStorage.removeItem(KEY);
  }
  document.getElementById('admin-key-form').addEventListener('submit', function (e) {
    e.preventDefault();
    // #99: don't persist the key until the server accepts it
    api('/admin/api/settings', { headers: { 'X-Admin-Key': keyInput.value } }).then(function (r) {
      if (r.status === 200) {
        sessionStorage.setItem(KEY, keyInput.value);
        status.textContent = '✓';
        keyInput.value = '';
        loadSettings();
      } else {
        status.textContent = 'invalid key';
        showLock();
      }
    });
  });
  document.getElementById('admin-settings-form').addEventListener('submit', function (e) {
    e.preventDefault();
    var body = {
      rate_limit_burst: parseFloat(document.getElementById('rl-burst').value),
      rate_limit_per_minute: parseFloat(document.getElementById('rl-refill').value),
      max_content_bytes: parseInt(document.getElementById('max-content').value, 10),
      default_expiry: document.getElementById('default-expiry').value,
      custom_slug_reservation_days: parseInt(document.getElementById('slug-days').value, 10),
      burn_viewer_window_minutes: parseInt(document.getElementById('burn-window').value, 10)
    };
    api('/admin/api/settings', { method: 'POST', body: JSON.stringify(body) }).then(function (r) {
      document.getElementById('admin-save-status').textContent = r.status === 200 ? 'saved' : 'error';
      if (r.status !== 200) showLock();
    });
  });
  // #112: always show the lock on fresh load — do not auto-restore the
  // panel from a stale sessionStorage key. The key is only written after a
  // successful unlock (above) so in-page actions still work within this visit.
 })();
@@ -4,6 +4,8 @@
  --muted: #7A6A9E; --muted-fg: #C0B2DE; --fg: #F2EDF8;
  --accent: #C4A8F0; --border: #42355C;
  --radius-lg: 20px; --radius: 10px; --radius-sm: 999px;
  --chevron: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23C8C8D4' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); /* #136: select chevron stroke (dark presets) */
  --chevron-fg: #C8C8D4;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Fira Code", monospace;
 }
@@ -18,6 +20,8 @@
  --accent: #7A7796; --border: #DAD7E6;
  --ok: #456F45; --warn: #7A5E1B; --err: #9E4054;
  --on-accent: #F6F5FA;
  --chevron: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23555560' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); /* #136: light presets use a dark stroke */
  --chevron-fg: #555560;
 }
 [data-preset="pastel-lavender"] {
  --bg: #e6e0f5; --surface: #f1edfa; --surface-2: #cbb8e7;
@@ -25,6 +29,8 @@
  --accent: #806bb8; --border: #c4b6e0;
  --ok: #3E6B3E; --warn: #7A5E1B; --err: #9E4054;
  --on-accent: #f1edfa;
  --chevron: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23555560' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); /* #136: light presets use a dark stroke */
  --chevron-fg: #555560;
 }
 [data-preset="pastel-peach"] {
  --bg: #ffe0d6; --surface: #fff0ea; --surface-2: #ffc4a8;
@@ -32,6 +38,8 @@
  --accent: #f9826c; --border: #ffc9b5;
  --ok: #3E6B3E; --warn: #7A5E1B; --err: #9E4054;
  --on-accent: #4F2318;
  --chevron: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23555560' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); /* #136: light presets use a dark stroke */
  --chevron-fg: #555560;
 }
 [data-preset="pastel-cloud"] {
  --bg: #fff0f6; --surface: #fff7fb; --surface-2: #ffc8dd;
@@ -39,6 +47,51 @@
  --accent: #a2d2ff; --border: #ffccd9;
  --ok: #3E6B3E; --warn: #7A5E1B; --err: #9E4054;
  --on-accent: #274a6b;
  --chevron: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23555560' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); /* #136: light presets use a dark stroke */
  --chevron-fg: #555560;
 }
 /* matching light/dark counterparts: same hue family, flipped lightness roles */
 /* Midnight Light: light counterpart of midnight (violet family) */
 [data-preset="midnight-light"] {
  --bg: #F3EFF9; --surface: #FAF8FD; --surface-2: #E1D9EF;
  --muted: #A99CC9; --muted-fg: #5F5390; --fg: #2B2140;
  --accent: #7B5FC0; --border: #D8CEEC;
  --ok: #3E6B3E; --warn: #7A5E1B; --err: #9E4054;
  --on-accent: #FAF8FD;
  --chevron: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23555560' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); /* #136: light presets use a dark stroke */
  --chevron-fg: #555560;
 }
 /* Smooth Dark: dark counterpart of smooth (muted slate-violet family) */
 [data-preset="smooth-dark"] {
  --bg: #23222E; --surface: #2C2B3A; --surface-2: #3B3A4D;
  --muted: #7A7796; --muted-fg: #B5B1C9; --fg: #E8E7F0;
  --accent: #A9A6C4; --border: #45435A;
  --ok: #9CD49C; --warn: #E8C77B; --err: #F2A3B3;
  --on-accent: #23222E;
 }
 /* Pastel Lavender Dark: dark counterpart (lavender family) */
 [data-preset="pastel-lavender-dark"] {
  --bg: #2A2340; --surface: #352C50; --surface-2: #4A3E6B;
  --muted: #8F7FB8; --muted-fg: #CBBEE8; --fg: #EFEAF8;
  --accent: #B39DE4; --border: #4E4272;
  --ok: #9CD49C; --warn: #E8C77B; --err: #F2A3B3;
  --on-accent: #2A2340;
 }
 /* Pastel Peach Dark: dark counterpart (peach family) */
 [data-preset="pastel-peach-dark"] {
  --bg: #3A241C; --surface: #4A2F24; --surface-2: #654234;
  --muted: #B07A64; --muted-fg: #F0C4B0; --fg: #FBEBE2;
  --accent: #F9826C; --border: #75503F;
  --ok: #9CD49C; --warn: #E8C77B; --err: #F2A3B3;
  --on-accent: #3A241C;
 }
 /* Pastel Cloud Dark: dark counterpart (pink cloud family, blue accent) */
 [data-preset="pastel-cloud-dark"] {
  --bg: #33222E; --surface: #402C3A; --surface-2: #583D50;
  --muted: #A87E97; --muted-fg: #E5C2D6; --fg: #FAEEF5;
  --accent: #A2D2FF; --border: #644759;
  --ok: #9CD49C; --warn: #E8C77B; --err: #F2A3B3;
  --on-accent: #33222E;
 }
 * { box-sizing: border-box; margin: 0; padding: 0; }
@@ -86,13 +139,24 @@ body {
 .pane-l-col { display: flex; flex-direction: column; gap: 14px; min-height: 0; }
 .pane-l-head { flex-shrink: 0; }
 .editor-head {
-  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
+  display: flex; align-items: stretch; gap: 12px; padding: 12px 16px;
 }
 /* #147: title lives in its own pill; select+refresh stay paired in a second pill */
 .editor-head-title,
 .editor-head-settings {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 6px 10px;
 }
 .editor-head-title { flex: 1; min-width: 0; }
 .editor-head-settings { flex: 0 0 fit-content; }
 .editor-head-title:focus-within,
 .editor-head-settings:focus-within { border-color: var(--accent); }
 .editor-head input {
  border: none; outline: none; background: transparent; color: var(--fg); font: inherit; font-size: 23.2px; flex: 1;
 }
 .editor-head select {
-  border: 1px solid var(--border); background: var(--surface-2); color: var(--muted-fg);
+  border: 1px solid var(--border); background-color: var(--surface-2); color: var(--muted-fg);
  border-radius: var(--radius); padding: 4px 10px; font: inherit; font-size: 21.6px; cursor: pointer;
 }
 /* shared code line metrics (#50): gutter + code must share one line box */
@@ -143,10 +207,10 @@ body {
 /* paste view */
 .meta-bar { display: flex; align-items: center; gap: 12px; padding: 12px 18px; flex-wrap: wrap; }
 .meta-bar h1 { font-size: 29.2px; font-weight: 600; }
-.slug { font-family: var(--font-mono); font-size: 21.6px; color: var(--muted-fg); background: var(--surface-2); padding: 3px 9px; border-radius: var(--radius); }
+.slug { font-family: var(--font-mono); font-size: 21.6px; color: var(--muted-fg); background: var(--surface-2); padding: 3px 9px; border-radius: var(--radius-sm); }
 .tag { font-size: 19.8px; color: var(--muted-fg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 2px 9px; }
 .paste-title-bar { display: flex; align-items: center; gap: 12px; padding: 12px 18px; flex-wrap: wrap; }
-.paste-title-bar h1 { font-size: 29.2px; font-weight: 600; margin: 0; }
+.paste-title-bar h1 { font-size: 29.2px; font-weight: 600; margin: 0; word-break: normal; overflow-wrap: anywhere; }
 .stats-pill { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
 .stats-head { display: flex; align-items: center; gap: 16px; width: 100%; background: none; border: 0; color: var(--muted-fg); font: inherit; font-size: 21.6px; padding: 14px 18px; cursor: pointer; text-align: left; }
 .stats-head:hover { color: var(--fg); background: var(--surface-2); }
@@ -162,10 +226,49 @@ body {
 .iconbtn { border: 1px solid var(--border); background: var(--surface-2); color: var(--muted-fg); border-radius: var(--radius); padding: 5px 12px; font: inherit; font-size: 21.6px; cursor: pointer; text-decoration: none; }
 .iconbtn.gear { display: inline-flex; align-items: center; padding: 5px 9px; }
 .iconbtn.gear svg { width: 22px; height: 22px; }
 /* #127: gear highlights like selected nav tabs; dark toggle button */
 .iconbtn.gear.on { background: var(--accent); color: var(--bg); border-color: var(--accent); }
 .iconbtn.dark-toggle { display: inline-flex; align-items: center; gap: 6px; padding: 5px 9px; }
 .iconbtn.dark-toggle svg { width: 22px; height: 22px; }
 .iconbtn.dark-toggle .icon-moon { display: none; }
 .iconbtn.dark-toggle .icon-sun { display: inline-block; }
 .dark .iconbtn.dark-toggle .icon-sun { display: none; }
 .dark .iconbtn.dark-toggle .icon-moon { display: inline-block; }
 /* #127: gear highlights like selected nav tabs; dark toggle button */
 .iconbtn.gear.on { background: var(--accent); color: var(--bg); border-color: var(--accent); }
 .iconbtn.dark-toggle { display: inline-flex; align-items: center; gap: 6px; padding: 5px 9px; }
 .iconbtn.dark-toggle svg { width: 22px; height: 22px; }
 .iconbtn.dark-toggle .icon-moon { display: none; }
 .iconbtn.dark-toggle .icon-sun { display: inline-block; }
 .dark .iconbtn.dark-toggle .icon-sun { display: none; }
 .dark .iconbtn.dark-toggle .icon-moon { display: inline-block; }
 .settings-head { padding: 12px 18px; border-bottom: 1px solid var(--border); }
 .settings-head h1 { font-size: 29.2px; font-weight: 600; margin: 0; }
 .settings-body { padding: 16px 18px; color: var(--muted-fg); font-size: 21.6px; }
 .settings-section-title { color: var(--fg); font-size: 24px; margin-bottom: 6px; }
 /* theme switcher cards (#100) */
 .theme-grid { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; }
 .theme-card {
  display: flex; flex-direction: column; gap: 10px; align-items: flex-start;
  padding: 14px 16px; min-width: 180px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--fg); font: inherit; font-size: 20px; cursor: pointer;
 }
 .theme-card:hover { border-color: var(--muted); }
 .theme-card[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
 .theme-card .swatches { display: flex; gap: 4px; }
 .theme-card .swatch { width: 26px; height: 26px; border-radius: 6px; border: 1px solid rgba(255,255,255,.15); }
 .theme-name { font-weight: 600; }
 .iconbtn:hover { color: var(--fg); border-color: var(--muted); }
 /* #130: line wrap toggle, accent when active like other toggles */
 .iconbtn.wrap-toggle[aria-pressed="true"],
 .btn-icon.wrap-toggle[aria-pressed="true"] { background: var(--accent); color: var(--bg); border-color: var(--accent); }
 /* #152: wrap ON must break long unbroken tokens mid-word and allow no horizontal scrolling */
 html[data-wrap] .codebody { white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-all; overflow-x: hidden; }
 html[data-wrap] .editor { white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-all; overflow-x: hidden; }
 /* #152: with wrap on nothing may scroll horizontally, including the code container and mobile floats */
 html[data-wrap] .code { overflow-x: hidden; }
 html[data-wrap] .float { overflow-x: hidden; }
 .iconbtn.danger:hover { color: #ff8fa3; border-color: #ff8fa3; }
 .code-head {
  display: flex; align-items: center; gap: 10px; padding: 8px 16px;
@@ -188,7 +291,8 @@ body {
 .footnote { display: flex; gap: 20px; padding: 10px 18px; font-size: 20.7px; color: var(--muted-fg); border-top: 1px solid var(--border); flex-wrap: wrap; }
 /* history */
-.page { max-width: 1200px; margin: 0 auto; padding: 20px; display: flex; flex-direction: column; gap: 16px; }
+.page { max-width: 1200px; margin: 0 auto; padding: 20px 20px 28px; display: flex; flex-direction: column; gap: 16px; min-height: calc(100vh - 76px); }
 .pager { position: sticky; bottom: 0; margin-top: auto; z-index: 5; }
 .head-row { display: flex; align-items: baseline; gap: 14px; }
 .head-row h1 { font-size: 34.5px; font-weight: 600; }
 .search {
@@ -201,13 +305,16 @@ th {
  text-align: left; font-size: 18.9px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--muted-fg); padding: 10px 16px; border-bottom: 1px solid var(--border); font-weight: 600;
 }
-td { padding: 10px 16px; border-bottom: 1px solid var(--border); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+td { padding: 10px 16px; border-bottom: 1px solid var(--border); overflow: clip; text-overflow: ellipsis; white-space: nowrap; }
 td:has(> a.slug), td:has(> .slug) { overflow: visible; }
 tr:last-child td { border-bottom: none; }
 tr.row { cursor: pointer; }
 tr.row:hover td { background: var(--surface-2); }
 tr.row:hover td a.slug { color: var(--accent); }
 td a.slug { font-family: var(--font-mono); font-size: 21.6px; color: var(--fg); text-decoration: none; }
 td a.slug:hover { color: var(--accent); }
 /* PASTE column fallback for untitled pastes: plain text, identical to a titled paste. URL/ID chips keep .slug styling. */
 td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-family: inherit; font-size: inherit; color: var(--fg); }
 .badge { font-size: 18.9px; border: 1px solid var(--border); color: var(--muted-fg); border-radius: var(--radius-sm); padding: 1px 8px; }
 .badge.lock { color: var(--accent); border-color: var(--accent); }
 .dim { color: var(--muted-fg); white-space: nowrap; }
@@ -281,6 +388,13 @@ td a.slug:hover { color: var(--accent); }
 .toast.success { border-color: var(--ok); color: var(--ok); }
 .toast.error { border-color: var(--err); color: var(--err); }
 /* result box color-coding (#105): colored left border + text tint per status */
 .result-ok, .result-err, .result-warn { border-left: 4px solid transparent; padding-left: 10px; }
 .result-ok { border-left-color: var(--ok); color: var(--ok); }
 .result-err { border-left-color: var(--err); color: var(--err); }
 .result-warn { border-left-color: var(--warn); color: var(--warn); }
 .result-ok a { color: var(--ok); }
 /* protection section rhythm (#20) */
 .protect { display: flex; flex-direction: column; gap: 2px; }
 .protect .pw-row { padding: 2px 8px 4px; }
@@ -333,17 +447,29 @@ td a.slug:hover { color: var(--accent); }
 /* paste name under slug pill in Paste column (#43) */
 .paste-sub { font-size: 19.8px; color: var(--muted-fg); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .paste-sub.dim { color: var(--muted); }
-td .url-link { font-size: 19.8px; }
+td a.slug.url-link { max-width: 100%; display: inline-block; vertical-align: middle; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; box-sizing: border-box; }
 td .id-link { color: var(--muted-fg); text-decoration: none; font-family: var(--font-mono); font-size: 19.8px; }
 td .id-link:hover { color: var(--accent); }
 /* sortable column headers (#42) */
 th.sortable { cursor: pointer; user-select: none; }
 th.sortable:hover { color: var(--fg); }
-.sort-ind { display: inline-block; width: 0; height: 0; margin-left: 6px; vertical-align: middle; border-left: 5px solid transparent; border-right: 5px solid transparent; }
+th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
 /* #101: arrow sits LEFT of the label, further spaced, vertically centered,
   and absolutely positioned so it never shifts the label text. */
 th.sortable { position: relative; padding-left: 24px; }
 th.sortable .sort-ind {
  position: absolute; left: 8px; top: 50%; transform: translateY(-50%);
  display: inline-block; width: 0; height: 0;
  border-left: 5px solid transparent; border-right: 5px solid transparent;
 }
 th.sorted.asc .sort-ind { border-bottom: 6px solid var(--accent); }
 th.sorted.desc .sort-ind { border-top: 6px solid var(--accent); }
 /* #102: small unobtrusive admin link on the settings page */
 a.admin-link { color: var(--muted-fg); font-size: 15px; text-decoration: none; }
 a.admin-link:hover { color: var(--fg); text-decoration: underline; }
 /* ============================================================
   Consistency audit (#18) — shared tokens across inputs, buttons,
   headings. Visual-only, no behavior change.
@@ -398,13 +524,19 @@ th.sorted.desc .sort-ind { border-top: 6px solid var(--accent); }
  body { font-size: 16px; }
  /* topbar: tighten so logo + nav + gear fit */
-  .topbar { gap: 10px; padding: 0 12px; height: 56px; }
+  .topbar { gap: 6px; padding: 0 10px; height: 56px; }
  .logo { font-size: 17px; white-space: nowrap; }
  .logo em { display: none; }
  .topbar nav { gap: 2px; flex-shrink: 0; }
-  .topbar nav a { padding: 5px 8px; font-size: 15px; }
+  .topbar nav a { padding: 4px 6px; font-size: 15px; }
  .iconbtn.gear { padding: 4px 7px; flex-shrink: 0; }
  .iconbtn.gear svg { width: 18px; height: 18px; }
  .iconbtn.dark-toggle { padding: 4px 7px; flex-shrink: 0; }
  .iconbtn.dark-toggle svg { width: 18px; height: 18px; }
  .iconbtn.dark-toggle span { display: none; }
  .iconbtn.dark-toggle { padding: 4px 7px; flex-shrink: 0; }
  .iconbtn.dark-toggle svg { width: 18px; height: 18px; }
  .iconbtn.dark-toggle span { display: none; }
  /* new paste: stack editor above sidebar, natural page height */
  .deck {
@@ -417,8 +549,11 @@ th.sorted.desc .sort-ind { border-top: 6px solid var(--accent); }
  .editor-wrap { min-height: 45vh; }
  .editor { font-size: 15px; }
  .gutter { font-size: 15px; }
  .editor-head { flex-wrap: wrap; }
  .editor-head-title { flex: 1 1 100%; }
  .editor-head input { min-width: 0; font-size: 16px; }
  .editor-head select { max-width: 120px; font-size: 14px; }
  .editor-head-title, .editor-head-settings { padding: 4px 8px; }
  .actionbar { flex-wrap: wrap; }
  .actionbar .btn { padding: 12px 22px; }
  .hint { font-size: 13px; }
@@ -456,3 +591,158 @@ th.sorted.desc .sort-ind { border-top: 6px solid var(--accent); }
  .unlock-err { font-size: 13px; }
  .center .foot { font-size: 13px; }
 }
 /* #4: can view page + can builder */
 .can-page h1 { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
 .can-items { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
 .can-item { padding: 12px 14px; }
 .can-item-head { display: flex; align-items: center; gap: 10px; }
 .can-item-head strong { flex: 1; word-break: break-all; }
 .can-item-body { margin-top: 8px; }
 .can-item-body summary { cursor: pointer; font-size: 19px; color: var(--muted, #888); }
 .can-item-body pre.code { margin: 8px 0 0; overflow-x: auto; }
 .can-item-row { margin-top: 8px; }
 .can-item-row .can-item-title { width: 100%; margin-bottom: 6px; }
 .can-item-row .can-item-content { width: 100%; font-family: var(--mono, monospace); resize: vertical; }
 /* ============================================================
   Styled controls (#123) — buttons, selects, checkboxes, radios
   match the custom URL box house pattern: 1px var(--border) on
   var(--bg), var(--radius) corners, accent border on focus, no
   default browser chrome (appearance: none).
   ============================================================ */
 /* selects: replace native chrome with a house-styled pill */
 select {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg) var(--chevron) no-repeat right 10px center; /* #136: themed chevron */
  color: var(--fg);
  font: inherit;
  padding: 4px 30px 4px 12px;
  cursor: pointer;
  outline: none;
  transition: border-color .12s ease, background-color .12s ease;
 }
 select:hover { border-color: var(--muted-fg); background-color: var(--surface-2); }
 select:focus-visible { border-color: var(--accent); outline: 2px solid var(--accent); outline-offset: 1px; }
 .editor-head select { padding: 4px 30px 4px 10px; }
 /* checkboxes and radios: custom drawn, accent when checked */
 input[type="checkbox"],
 input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px; height: 16px; margin: 0; flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  position: relative;
  transition: border-color .12s ease, background-color .12s ease;
 }
 input[type="checkbox"] { border-radius: 4px; }
 input[type="radio"] { border-radius: 50%; }
 input[type="checkbox"]:hover,
 input[type="radio"]:hover { border-color: var(--muted-fg); }
 input[type="checkbox"]:checked,
 input[type="radio"]:checked { background: var(--accent); border-color: var(--accent); }
 input[type="checkbox"]:checked::after {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='10' viewBox='0 0 12 10'%3E%3Cpath d='M1 5l4 4 6-8' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 11px no-repeat;
 }
 input[type="radio"]:checked::after {
  content: "";
  position: absolute; inset: 3px;
  border-radius: 50%;
  background: var(--bg);
 }
 input[type="checkbox"]:focus-visible,
 input[type="radio"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
 }
 /* buttons: every submit-style button gets the .btn treatment,
   and .btn itself gains the house surface/border/hover pattern */
 button[type="submit"] {
  background: var(--accent); color: var(--bg); border: 1px solid var(--accent);
  border-radius: var(--radius); font: inherit; font-weight: 600;
  padding: 8px 18px; cursor: pointer;
  transition: filter .12s ease;
 }
 button[type="submit"]:hover { filter: brightness(1.08); }
 button[type="submit"]:focus-visible,
 .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
 .btn {
  border: 1px solid var(--accent);
 }
 .btn:hover { filter: brightness(1.08); }
 /* settings: give the Admin link clear separation from the theme grid */
 .admin-link-row {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
 }
 /* #38: attachment upload on /new + attachment display on paste view */
 .side-section .file-input { display: none; }
 .dropzone {
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 12px;
  text-align: center;
  color: var(--muted-fg);
  cursor: pointer;
  font-size: 20.7px;
  transition: border-color .15s, background .15s;
  background: var(--surface-2, transparent);
 }
 .dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: var(--surface-2);
 }
 .dropzone.dragover { border-width: 2px; }
 .file-chip {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px 14px; margin-top: 8px; background: var(--surface);
  font-size: 21.6px;
 }
 .file-chip .file-chip-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
 .file-chip .file-chip-size { color: var(--muted-fg); font-size: 19px; }
 .file-chip .file-chip-remove {
  border: none; background: none; color: var(--muted-fg); cursor: pointer;
  font-size: 22px; padding: 0 4px; border-radius: var(--radius-sm);
 }
 .file-chip .file-chip-remove:hover { color: var(--danger, #c0392b); }
 .attachment-bar { display: flex; flex-direction: column; gap: 10px; }
 .attachment-chip {
  display: inline-flex; align-items: center; gap: 12px; align-self: flex-start;
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px 16px; text-decoration: none; color: var(--fg);
  background: var(--surface-2); font-size: 21.6px;
 }
 .attachment-chip:hover { border-color: var(--accent); }
 .attachment-chip .attachment-size { color: var(--muted-fg); font-size: 19px; }
 .attachment-preview img { max-width: 480px; max-height: 360px; border-radius: var(--radius); border: 1px solid var(--border); }
 /* #139: CSP-safe replacements for inline style attributes (style-src 'self') */
 .hidden { display: none; }
 .can-page { max-width: 900px; width: 100%; }
 .col-a { width: 260px; } .col-b { width: 140px; } .col-c { width: 120px; }
 .col-d { width: 96px; } .col-d2 { width: 150px; } .col-e { width: 190px; }
 .col-f { width: 100px; } .col-g { width: 190px; }
 .spacer-flex { flex: 1; }
 .input-num { width: 80px; }
 .input-num-sm { width: 64px; }
 .danger-hint { color: var(--danger, #c0392b); margin-top: 6px; }
 .hint-lg { font-size: 19px; }
 .mt6 { margin-top: 6px; }
 .mt18 { margin-top: 18px; }
 .toggle-inline { display: inline-flex; }
 .wrap-normal { word-break: normal; overflow-wrap: break-word; }
 .created-banner { display: block; }
@@ -0,0 +1,19 @@
 // #46: live relative-time counters: tick any [data-ts] (epoch seconds) every second
 (function () {
  function fmt(ts) {
    const s = Math.max(0, Math.floor(Date.now() / 1000) - ts);
    if (s < 60) return s + 's ago';
    if (s < 3600) return Math.floor(s / 60) + 'm ago';
    if (s < 86400) return Math.floor(s / 3600) + 'h ago';
    return Math.floor(s / 86400) + 'd ago';
  }
  function tick() {
    document.querySelectorAll('[data-ts]').forEach(el => {
      const ts = parseInt(el.dataset.ts, 10);
      if (!isNaN(ts)) el.textContent = fmt(ts);
    });
  }
  setInterval(tick, 1000);
  document.addEventListener('DOMContentLoaded', tick);
  tick();
 })();
@@ -0,0 +1,20 @@
 // #139: public history table + 30s auto-refresh.
 const t = PaletteTable.init({
  endpoint: '/api/public',
  perPage: 25,
  hasPager: true,
  rowHtml: it =>
    `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
    (it.title
      ? `${t.esc(it.title)}${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
      : `<a class="slug paste-name" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`) +
    `</td>` +
    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
    `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim">${it.view_count}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
    (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
    `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td></tr>`,
  emptyFiltered: 'No pastes match your search.',
  emptyAll: 'No pastes yet. Create the first one.',
 });
 t.load();
 setInterval(t.load, 30000); // auto-refresh history every 30s
@@ -0,0 +1,46 @@
 // #139: saved pastes table.
 function toast(msg, kind) {
  let t = document.querySelector('.toast');
  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
  t.textContent = msg;
  t.classList.remove('success', 'error');
  if (kind === 'success') t.classList.add('success');
  if (kind === 'error') t.classList.add('error');
  t.classList.add('show');
  clearTimeout(t._h);
  t._h = setTimeout(() => t.classList.remove('show'), 2000);
 }
 const t = PaletteTable.init({
  endpoint: '/api/mine',
  perPage: 25,
  hasPager: true,
  rowHtml: it =>
    `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
    (it.title
      ? `${t.esc(it.title)}${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
      : `<a class="slug paste-name" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`) +
    `</td>` +
    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
    `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
    (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
    `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td>` +
    `<td><button class="btn btn-icon del" data-id="${t.esc(it.id)}" title="Delete paste" aria-label="Delete paste">&times;</button></td></tr>`,
  emptyFiltered: 'No pastes from this browser match your search.',
  emptyAll: 'No pastes from this browser yet.',
 });
 // delete buttons (viewer-scoped, enforced server-side #37)
 document.getElementById('rows').addEventListener('click', async e => {
  const del = e.target.closest('button.del');
  if (!del) return;
  e.stopPropagation();
  del.disabled = true;
  try {
    const res = await fetch('/api/pastes/' + del.dataset.id, { method: 'DELETE' });
    if (res.ok) { toast('Deleted', 'success'); t.load(); }
    else { toast('Delete failed', 'error'); del.disabled = false; }
  } catch (err) { toast('Delete failed', 'error'); del.disabled = false; }
 });
 t.load();
@@ -0,0 +1,398 @@
 // #139: editor page logic (gutter, expiry, burn, attachments, create).
 const $ = id => document.getElementById(id);
 const content = $('content'), gutter = $('gutter');
 function updateGutter() {
  const lines = content.value.split('\n').length;
  let s = '';
  for (let i = 1; i <= Math.max(lines, 1); i++) s += i + '\n';
  gutter.textContent = s;
 }
 content.addEventListener('input', updateGutter);
 updateGutter();
 function toast(msg, kind) {
  let t = document.querySelector('.toast');
  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
  t.textContent = msg;
  t.classList.remove('success', 'error');
  if (kind === 'success') t.classList.add('success');
  if (kind === 'error') t.classList.add('error');
  t.classList.add('show');
  clearTimeout(t._h);
  t._h = setTimeout(() => t.classList.remove('show'), 2000);
 }
 const setHidden = (id, hid) => { const el = $(id); if (el) el.classList.toggle('hidden', hid); };
 $('haspw').addEventListener('change', e => setHidden('pwrow', !e.target.checked));
 $('burn').addEventListener('change', e => setHidden('burnrow', !e.target.checked));
 document.querySelectorAll('input[name="exp"]').forEach(r => r.addEventListener('change', () => {
  setHidden('customexp-row', document.querySelector('input[name="exp"]:checked').value !== 'custom');
  setHidden('customexp-err', true);
 }));
 // compose the expires_in Go-duration string when Custom is checked (#48).
 // Returns the string, or null with an inline error shown.
 function composeCustomExpiry() {
  const n = parseInt($('expnum').value, 10);
  const unit = $('expunit').value;
  let mins = NaN;
  if (n > 0) {
    if (unit === 'm') mins = n;
    else if (unit === 'h') mins = n * 60;
    else if (unit === 'd') mins = n * 1440;
    else if (unit === 'w') mins = n * 10080;
    else if (unit === 'mo') mins = n * 43200; // months counted as 30 days
  }
  const err = $('customexp-err');
  if (!(mins >= 1)) {
    err.textContent = 'Enter a duration of at least 1 minute.';
    err.classList.remove('hidden');
    return null;
  }
  if (mins > 525600) { // more than 1 year
    err.textContent = 'Custom expiry cannot exceed 1 year.';
    err.classList.remove('hidden');
    return null;
  }
  err.classList.add('hidden');
  // compose as h (+d/m remainders); Go parses '336h', '90m', '6h30m' fine
  const hours = Math.floor(mins / 60), rem = mins % 60;
  if (rem === 0) return hours + 'h';
  if (hours === 0) return rem + 'm';
  return hours + 'h' + rem + 'm';
 }
 $('pwreveal').addEventListener('click', () => {
  const pw = $('password');
  const show = pw.type === 'password';
  pw.type = show ? 'text' : 'password';
  $('pwreveal').classList.toggle('off', !show);
  $('pwreveal').title = show ? 'Hide password' : 'Show password';
 });
 let guessed = ''; // last auto-detected language, '' = user override
 // #105: map backend machine-readable error codes to plain-language guidance.
 // Unknown codes fall back to a generic message; the technical detail stays
 // in the API response for API consumers.
 const ERROR_MESSAGES = {
  slug_taken: 'That Custom URL is already taken. Try another.',
  slug_reserved: 'That Custom URL is reserved. Try another.',
  slug_invalid: 'Please keep the Custom URL under 64 characters, using only letters, numbers, dashes, or underscores.',
  content_empty: 'Write or paste something first.',
  content_too_large: 'This paste is too large. The limit is 5 MB.',
  file_too_large: 'File is too large. The limit is 25 MB.',
  one_file_only: 'Choose either text or a file for now.',
  expiry_invalid: 'Please pick an expiry between 1 minute and 1 year.',
  rate_limited: 'Too many tries. Wait a minute and try again.',
 };
 const GENERIC_ERROR = 'Something went wrong. Please try again.';
 function friendlyError(data) {
  return ERROR_MESSAGES[data && data.code] || GENERIC_ERROR;
 }
 // #105: color the result box by outcome — success (ok), error (err),
 // warning (warn) — with a colored left border (CSS .result-ok/.result-err).
 function setResultKind(kind) {
  const card = $('result-card');
  card.classList.remove('result-ok', 'result-err', 'result-warn');
  if (kind) card.classList.add('result-' + kind);
 }
 function showResult(html, kind) {
  $('result').innerHTML = html;
  $('result').dataset.token = kind === 'ok' ? ($('result').dataset.token || '') : ($('result').dataset.token || '');
  setHidden('result-card', false);
  setResultKind(kind === 'ok' ? 'ok' : (kind === 'warn' ? 'warn' : 'err'));
 }
 function defaultFilename(lang) {
  const names = {
    python: 'Python.py', go: 'main.go', javascript: 'script.js', typescript: 'index.ts',
    rust: 'main.rs', c: 'main.c', cpp: 'main.cpp', java: 'Main.java', bash: 'script.sh',
    sql: 'query.sql', yaml: 'config.yaml', json: 'data.json', html: 'index.html',
    css: 'style.css', xml: 'doc.xml', php: 'index.php', ruby: 'main.rb',
    perl: 'main.pl', lua: 'main.lua', dockerfile: 'Dockerfile', toml: 'config.toml',
    ini: 'config.ini', diff: 'changes.diff',
    markdown: 'notes.md', text: 'Text.txt',
  };
  return names[lang] || '';
 }
 // fill default filename when title is still blank
 function maybeSetDefaultTitle(lang) {
  const title = $('title');
  if (lang && !title.value.trim()) {
    const fn = defaultFilename(lang);
    if (fn) title.value = fn;
  }
 }
 async function guessLang() {
  if (!content.value.trim()) return;
  try {
    const res = await fetch('/api/guess-language', {
      method: 'POST',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({content: content.value}),
    });
    const data = await res.json();
    if (res.ok && data.language) {
      guessed = data.language;
      $('language').value = data.language;
      maybeSetDefaultTitle(data.language);
    }
  } catch(e) {}
 }
 // refresh button: always re-detect, even if user picked something
 $('reguess').addEventListener('click', guessLang);
 // auto-guess when pasting into the editor
 content.addEventListener('paste', () => setTimeout(guessLang, 0));
 async function create() {
  // #4: can mode — bundle the editor + extra items into a can via multipart
  if ($('iscan').checked) return createCan();
  // #38: file attached -> file paste (1 file = 1 paste; text is ignored)
  if (attachedFile) return createFilePaste();
  const body = {
    content: content.value,
    title: $('title').value || null,
    language: $('language').value || null,
    custom_slug: $('custom').value || null,
    burn_after_read: $('burn').checked,
  };
  if ($('burn').checked) body.burn_after_reads = parseInt($('burnreads').value, 10) || 1;
  if ($('haspw').checked) body.password = $('password').value;
  const exp = document.querySelector('input[name="exp"]:checked').value;
  if (exp === 'custom') {
    const dur = composeCustomExpiry();
    if (dur === null) { toast('Check the custom expiry', 'error'); return; }
    body.expires_in = dur;
  } else if (exp) {
    body.expires_in = exp;
  }
  const res = await fetch('/api/pastes', {
    method: 'POST',
    headers: {'Content-Type': 'application/json'},
    body: JSON.stringify(body),
  });
  const data = await res.json();
  if (!res.ok) {
    showResult(friendlyError(data), 'err');
    toast('Create failed', 'error');
    return;
  }
  finishCreate(data);
 }
 // shared success handling for both create paths (#38): result box, copy
 // button, password auto-unlock, then redirect to the paste.
 function finishCreate(data) {
  const url = location.origin + '/' + (data.custom_slug || data.id);
  showResult('<a href="' + url + '">' + url + '</a> <button class="btn btn-icon" id="result-copy" title="Copy URL" type="button">⧉</button>', 'ok');
  $('result').dataset.token = data.deletion_token || '';
  const copyBtn = document.getElementById('result-copy');
  copyBtn.addEventListener('click', () => {
    try {
      navigator.clipboard.writeText(url);
      copyBtn.classList.add('ok');               // in-place success feedback (#53)
      copyBtn.textContent = 'Success!';
      setTimeout(() => { copyBtn.classList.remove('ok'); copyBtn.textContent = '⧉'; }, 2000);
    } catch(e) { toast('Copy failed', 'error'); }
  });
  // token carried via sessionStorage, never in the URL (#143)
  const dest = '/' + data.id + '?created=1';
  try { sessionStorage.setItem('deletion_token_' + data.id, data.deletion_token || ''); } catch(e) {}
  // password-protected: unlock now with the password we already have (#26)
  if ($('haspw').checked && data.id) {
    const fd = new FormData();
    fd.append('password', $('password').value);
    fd.append('next', dest);
    try {
      fetch('/' + data.id, {method: 'POST', body: fd}).finally(() => { location.href = dest; });
      return;
    } catch(e) {}
  }
  // show the paste
  location.href = dest;
 }
 $('create').addEventListener('click', create);
 // #38: file attachment support — 1 file = 1 paste. Three input paths:
 // Ctrl+V paste of a file, upload button (file picker), drag-and-drop.
 const MAX_FILE_BYTES = 25 * 1024 * 1024;
 let attachedFile = null; // the single attached File, or null
 function humanSize(n) {
  if (n >= 1048576) return (n / 1048576).toFixed(1) + ' MB';
  if (n >= 1024) return (n / 1024).toFixed(1) + ' KB';
  return n + ' B';
 }
 function setAttachedFile(file) {
  if (!file) return clearAttachedFile();
  if (file.size > MAX_FILE_BYTES) {
    toast('File is too large. The limit is 25 MB.', 'error');
    return;
  }
  attachedFile = file;
  renderFileChip();
  setHidden('file-text-note', false);
 }
 function clearAttachedFile() {
  attachedFile = null;
  $('file-input').value = '';
  renderFileChip();
  setHidden('file-text-note', true);
 }
 function renderFileChip() {
  const slot = $('file-chip-slot');
  slot.innerHTML = '';
  if (!attachedFile) return;
  const chip = document.createElement('div');
  chip.className = 'file-chip';
  chip.innerHTML = '<span class="file-chip-name"></span>' +
    '<span class="file-chip-size">' + humanSize(attachedFile.size) + '</span>' +
    '<button type="button" class="file-chip-remove" title="Remove file">&times;</button>';
  chip.querySelector('.file-chip-name').textContent = attachedFile.name;
  chip.querySelector('.file-chip-remove').addEventListener('click', clearAttachedFile);
  slot.appendChild(chip);
 }
 // (1) file picker via the dropzone click
 $('dropzone').addEventListener('click', () => $('file-input').click());
 $('file-input').addEventListener('change', () => {
  if ($('file-input').files.length) setAttachedFile($('file-input').files[0]);
 });
 // (2) drag-and-drop onto the dropzone (and the page broadly)
 const dz = $('dropzone');
 ['dragenter', 'dragover'].forEach(ev => {
  document.addEventListener(ev, e => {
    if (!e.dataTransfer || ![...e.dataTransfer.types].includes('Files')) return;
    e.preventDefault();
    dz.classList.add('dragover');
  });
 });
 ['dragleave', 'drop'].forEach(ev => {
  document.addEventListener(ev, e => {
    if (ev === 'drop') e.preventDefault();
    if (e.target === dz || ev === 'drop') dz.classList.remove('dragover');
  });
 });
 document.addEventListener('drop', e => {
  if (!e.dataTransfer || !e.dataTransfer.files.length) return;
  e.preventDefault();
  setAttachedFile(e.dataTransfer.files[0]);
 });
 // (3) Ctrl+V of a file anywhere on the page
 document.addEventListener('paste', e => {
  const files = e.clipboardData && e.clipboardData.files;
  if (!files || !files.length) return; // normal text paste into the editor
  e.preventDefault();
  setAttachedFile(files[0]);
 });
 // file create path: POST multipart. 1 file = 1 paste: when a file is
 // attached the editor text is ignored (server enforces this too).
 async function createFilePaste() {
  const fd = new FormData();
  fd.append('file', attachedFile);
  if ($('title').value) fd.append('title', $('title').value);
  if ($('custom').value) fd.append('custom_slug', $('custom').value);
  if ($('haspw').checked) fd.append('password', $('password').value);
  if ($('burn').checked) {
    fd.append('burn_after_read', 'true');
    fd.append('burn_after_reads', String(parseInt($('burnreads').value, 10) || 1));
  }
  if ($('unlisted').checked) fd.append('visibility', 'unlisted');
  const exp = document.querySelector('input[name="exp"]:checked').value;
  if (exp === 'custom') {
    const dur = composeCustomExpiry();
    if (dur === null) { toast('Check the custom expiry', 'error'); return; }
    fd.append('expires_in', dur);
  } else if (exp) {
    fd.append('expires_in', exp);
  }
  const res = await fetch('/api/pastes', { method: 'POST', body: fd });
  const data = await res.json();
  if (!res.ok) {
    showResult(friendlyError(data), 'err');
    toast('Create failed', 'error');
    return;
  }
  finishCreate(data);
 }
 // #4: can creation — POST multipart to /api/pastes/can. The main editor is
 // the first item; each extra can-item row is another text item.
 async function createCan() {
  const items = [];
  if (content.value.trim()) {
    items.push({title: $('title').value || 'main', content: content.value, language: $('language').value || ''});
  }
  document.querySelectorAll('#can-items .can-item-row').forEach(row => {
    const t = row.querySelector('.can-item-title').value.trim();
    const c = row.querySelector('.can-item-content').value;
    if (c.trim()) items.push({title: t || ('item-' + (items.length + 1)), content: c});
  });
  if (!items.length) { toast('Nothing to put in the can', 'error'); return; }
  const fd = new FormData();
  fd.append('title', $('title').value || 'Untitled can');
  fd.append('json_items', JSON.stringify(items));
  if ($('haspw').checked) fd.append('password', $('password').value);
  if ($('unlisted').checked) fd.append('visibility', 'unlisted');
  const exp = document.querySelector('input[name="exp"]:checked').value;
  if (exp === 'custom') {
    const dur = composeCustomExpiry();
    if (dur === null) { toast('Check the custom expiry', 'error'); return; }
    if (dur) fd.append('expires_in', dur);
  } else if (exp) {
    fd.append('expires_in', exp);
  }
  if ($('custom').value.trim()) fd.append('custom_slug', $('custom').value.trim());
  const res = await fetch('/api/pastes/can', {method: 'POST', body: fd});
  const data = await res.json();
  if (!res.ok) {
    showResult(friendlyError(data), 'err');
    toast('Can create failed', 'error');
    return;
  }
  const url = location.origin + data.url;
  showResult('<a href="' + url + '">' + url + '</a> <button class="btn btn-icon" id="result-copy" title="Copy URL" type="button">⧉</button>', 'ok');
  const copyBtn = document.getElementById('result-copy');
  copyBtn.addEventListener('click', () => {
    try {
      navigator.clipboard.writeText(url);
      copyBtn.classList.add('ok');
      copyBtn.textContent = 'Success!';
      setTimeout(() => { copyBtn.classList.remove('ok'); copyBtn.textContent = '⧉'; }, 2000);
    } catch(e) { toast('Copy failed', 'error'); }
  });
  // password-protected can: unlock now with the password we already have (#26 parity)
  if ($('haspw').checked && data.id) {
    const pd = new FormData();
    pd.append('password', $('password').value);
    try { await fetch('/can/' + data.id, {method: 'POST', body: pd}); } catch(e) {}
  }
  location.href = data.url;
 }
 // reset stale result state when returning via Back (bfcache) (#28)
 window.addEventListener('pageshow', e => {
  if (!e.persisted) return;
  const rc = document.getElementById('result-card');
  if (rc) rc.classList.add('hidden');
  const r = document.getElementById('result');
  if (r) { r.innerHTML = 'empty'; delete r.dataset.token; }
 });
 document.addEventListener('keydown', e => {
  if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') { e.preventDefault(); create(); }
 });
@@ -0,0 +1,47 @@
 // #53/#139: paste viewer page logic. Paste id arrives via <body data-paste-id>.
 function toast(msg) {
  let t = document.querySelector('.toast');
  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
  t.textContent = msg;
  t.classList.add('show');
  clearTimeout(t._h);
  t._h = setTimeout(() => t.classList.remove('show'), 2000);
 }
 function toggleStats() {
  const body = document.getElementById('stats-body');
  const pill = document.getElementById('stats-pill');
  const btn = document.getElementById('stats-toggle');
  const open = body.hidden;
  body.hidden = !open;
  pill.classList.toggle('open', open);
  btn.setAttribute('aria-expanded', open ? 'true' : 'false');
 }
 function copyContent(btn) {
  navigator.clipboard.writeText(document.getElementById('raw-content').value);
  // in-place success feedback (#53)
  if (btn) {
    btn.classList.add('ok');
    btn.textContent = 'Success!';
    clearTimeout(btn._okh);
    btn._okh = setTimeout(() => { btn.classList.remove('ok'); btn.textContent = 'copy'; }, 2000);
  } else {
    toast('Copied', 'success');
  }
 }
 function redeem() {
  if (!confirm('Hard delete this paste immediately?')) return;
  let tok = '';
  try { tok = sessionStorage.getItem('deletion_token_' + PASTE_ID) || ''; } catch(e) {}
  if (!tok) { alert('deletion token not available in this browser'); return; }
  fetch('/api/pastes/' + PASTE_ID + '/redeem', {method: 'DELETE', headers: {'Authorization': 'Bearer ' + tok}})
    .then(r => { if (r.ok) location.href = '/history'; else alert('delete failed'); });
 }
 // wiring (moved from inline handlers for CSP #139)
 var PASTE_ID = document.currentScript.getAttribute('data-paste-id');
 var copyBtn = document.getElementById('copy-btn');
 if (copyBtn) copyBtn.addEventListener('click', function (e) { e.preventDefault(); copyContent(copyBtn); });
 var delBtn = document.getElementById('delete-btn');
 if (delBtn) delBtn.addEventListener('click', function (e) { e.preventDefault(); redeem(); });
 var statsToggle = document.getElementById('stats-toggle');
 if (statsToggle) statsToggle.addEventListener('click', toggleStats);
@@ -0,0 +1,101 @@
 // #112/#127/#139: theme switcher. Swatch colors are derived from computed CSS vars per preset.
 (function () {
  // #112: derive each preset's swatches from the real CSS variables in
  // app.css by temporarily applying data-preset, so they can never drift.
  // #127: 5 theme pairs, light swatches top row, dark bottom row.
  var pairs = [
    { id: 'midnight',        name: 'Midnight' },
    { id: 'smooth',          name: 'Smooth' },
    { id: 'pastel-lavender', name: 'Pastel Lavender' },
    { id: 'pastel-peach',    name: 'Pastel Peach' },
    { id: 'pastel-cloud',    name: 'Pastel Cloud' }
  ];
  var SWATCH_VARS = ['--bg', '--surface', '--surface-2', '--muted', '--accent'];
  function presetColors(id) {
    var root = document.documentElement;
    var prev = root.getAttribute('data-preset');
    root.setAttribute('data-preset', id);
    var cs = getComputedStyle(root);
    var colors = SWATCH_VARS.map(function (v) { return cs.getPropertyValue(v).trim(); });
    if (prev === null) root.removeAttribute('data-preset'); else root.setAttribute('data-preset', prev);
    return colors;
  }
  // current base pair + dark flag from the resolved data-preset.
  // "midnight" is itself the dark variant, so check dark ids first.
  function state() {
    var p = document.documentElement.dataset.preset || 'midnight';
    if (p === 'midnight' || /-dark$/.test(p)) {
      return { base: p === 'midnight' ? 'midnight' : p.replace(/-dark$/, ''), dark: true };
    }
    return { base: p === 'midnight-light' ? 'midnight' : p, dark: false };
  }
  var grid = document.getElementById('theme-grid');
  var cards = {};
  // #132: midnight is dark-first (root preset = midnight = dark; its light
  // variant is midnight-light), the others are light-first. Resolve the
  // LIGHT and DARK preset ids generically so the light swatches always
  // render in the top row of every card.
  function lightPreset(id) {
    if (id === 'midnight') return 'midnight-light';
    return id; // light-first bases use themselves as the light variant
  }
  function darkPreset(id) {
    if (id === 'midnight') return 'midnight'; // root preset is midnight's dark
    return id + '-dark';
  }
  pairs.forEach(function (t) {
    var light = presetColors(lightPreset(t.id));
    var dark = presetColors(darkPreset(t.id));
    var btn = document.createElement('button');
    btn.type = 'button';
    btn.className = 'theme-card';
    btn.setAttribute('aria-pressed', 'false');
    btn.setAttribute('data-pair', t.id);
    // #139: build the swatches via DOM APIs (CSSOM styles) instead of
    // innerHTML strings: re-parsing serialized inline styles would trip
    // style-src 'self'.
    var label = document.createElement('strong');
    label.textContent = t.name;
    btn.appendChild(label);
    [light, dark].forEach(function (colors) {
      var row = document.createElement('span');
      row.className = 'swatches';
      colors.forEach(function (c) {
        var sw = document.createElement('span');
        sw.className = 'swatch';
        sw.style.backgroundColor = c;
        row.appendChild(sw);
      });
      btn.appendChild(row);
    });
    btn.addEventListener('click', function () {
      var dark = state().dark;
      document.documentElement.dataset.preset = dark ? t.id + '-dark' : t.id;
      try { localStorage.setItem('palette-theme', t.id); } catch (e) {}
      Object.keys(cards).forEach(function (k) { cards[k].setAttribute('aria-pressed', 'false'); });
      btn.setAttribute('aria-pressed', 'true');
    });
    cards[t.id] = btn;
    grid.appendChild(btn);
  });
  function sync() {
    var s = state();
    Object.keys(cards).forEach(function (k) {
      cards[k].setAttribute('aria-pressed', k === s.base ? 'true' : 'false');
    });
    var dt = document.getElementById('settings-dark-toggle');
    if (dt) dt.setAttribute('aria-pressed', s.dark ? 'true' : 'false');
  }
  sync();
  // the topbar script runs before this button exists, so wire it here
  var dt = document.getElementById('settings-dark-toggle');
  dt.addEventListener('click', function () {
    var btns = document.querySelectorAll('.topbar .dark-toggle');
    if (btns.length) btns[0].click(); else document.dispatchEvent(new CustomEvent('palette-darkchange'));
  });
  document.addEventListener('palette-darkchange', sync);
 })();
@@ -79,10 +79,10 @@ const PaletteTable = (() => {
        const rows = $('rows'), empty = $('empty');
        if (!items.length) {
          rows.innerHTML = '';
-          empty.style.display = 'block';
+          empty.classList.remove('hidden');
          empty.textContent = filtered ? opts.emptyFiltered : opts.emptyAll;
        } else {
-          empty.style.display = 'none';
+          empty.classList.add('hidden');
          rows.innerHTML = items.map(opts.rowHtml).join('');
        }
@@ -90,10 +90,31 @@ const PaletteTable = (() => {
        if (opts.hasPager && pager && showing) {
          const pages = Math.max(1, Math.ceil(state.total / opts.perPage));
          if (filtered || state.sortKey) {
-            showing.textContent = state.sortKey
+            // Pagination operates over the FILTERED set (#133): never hide the bar.
-              ? 'Sorted by ' + state.sortKey + ' (' + (state.sortDir === 1 ? 'ascending' : 'descending') + ') · ' + items.length.toLocaleString() + ' of ' + state.total.toLocaleString()
+            const filtPages = Math.max(1, Math.ceil(items.length / opts.perPage));
-              : 'Showing ' + items.length.toLocaleString() + ' matches for "' + state.filter + '"';
+            if (state.page > filtPages) state.page = filtPages;
-            pager.innerHTML = '';
+            const fOff = (state.page - 1) * opts.perPage;
            const view = items.slice(fOff, fOff + opts.perPage);
            rows.innerHTML = view.length ? view.map(opts.rowHtml).join('') : '';
            if (!view.length) {
              empty.classList.remove('hidden');
              empty.textContent = filtered ? opts.emptyFiltered : opts.emptyAll;
            }
            showing.textContent = `Showing ${view.length === 0 ? 0 : fOff+1}–${fOff+view.length} of ${items.length.toLocaleString()} ${filtered ? 'matches' : 'sorted'} · page ${state.page} of ${filtPages}`;
            const btns = [];
            const add = (label, target, o={}) => btns.push(`<button ${o.on?'class="on"':''} ${o.dis?'disabled':''} data-p="${target}">${label}</button>`);
            add('‹', state.page-1, {dis: state.page===1});
            const win = new Set([1, 2, state.page-1, state.page, state.page+1, filtPages]);
            let last = 0;
            for (let i = 1; i <= filtPages; i++) {
              if (win.has(i)) {
                if (last && i - last > 1) btns.push('<span class="dim">…</span>');
                add(String(i), i, {on: i===state.page});
                last = i;
              }
            }
            add('›', state.page+1, {dis: state.page===filtPages});
            pager.innerHTML = btns.join('');
          } else {
            showing.textContent = state.total === 0 ? 'Nothing here yet' :
              `Showing ${off+1}–${Math.min(off+opts.perPage, state.total)} of ${state.total.toLocaleString()} · page ${state.page} of ${pages}`;
@@ -126,6 +147,7 @@ const PaletteTable = (() => {
      if (!th) return;
      const k = th.dataset.sort;
      if (state.sortKey === k) { state.sortDir = -state.sortDir; } else { state.sortKey = k; state.sortDir = 1; }
      state.page = 1;
      renderSortIndicators();
      load();
    });
@@ -0,0 +1,78 @@
 // #16/#100/#127: theme preset resolution. Runs in <head> (blocking) so the
 // correct data-preset is set before first paint. The server default dark flag
 // arrives via the script tag's data-default-dark attribute so no inline script is needed.
 // #130: shared line wrap preference (localStorage 'palette-wrap', default off).
 // preset hook (#16): ?theme= wins; else persisted choice (#100).
 // #127: theme pairs - each base theme has a light and dark variant;
 // palette-theme stores the base id, palette-dark the dark flag.
 (function () {
  var PAIRS = {
    'midnight':        { light: 'midnight-light',       dark: 'midnight' },
    'smooth':          { light: 'smooth',               dark: 'smooth-dark' },
    'pastel-lavender': { light: 'pastel-lavender',      dark: 'pastel-lavender-dark' },
    'pastel-peach':    { light: 'pastel-peach',         dark: 'pastel-peach-dark' },
    'pastel-cloud':    { light: 'pastel-cloud',         dark: 'pastel-cloud-dark' }
  };
  function resolve(t, dark) {
    for (var base in PAIRS) {
      if (t === PAIRS[base].light || t === PAIRS[base].dark) return t;
      if (t === base) return dark ? PAIRS[base].dark : PAIRS[base].light;
    }
    return null;
  }
  var t = new URLSearchParams(location.search).get('theme');
  // precedence: URL ?theme= > stored pair+dark prefs > server default dark > dark on
  var dark = (document.currentScript && document.currentScript.getAttribute('data-default-dark')) === '1';
  try {
    var stored = localStorage.getItem('palette-dark');
    if (stored !== null) dark = stored !== 'false';
  } catch (e) {}
  if (t) {
    // URL ?theme= wins and accepts both base and variant ids; a variant id
    // also sets the dark flag and normalizes t back to its base pair id.
    var found = false;
    for (var base in PAIRS) {
      if (t === PAIRS[base].dark) { dark = true; t = base; found = true; break; }
      if (t === PAIRS[base].light) { dark = false; t = base; found = true; break; }
      if (t === base) { found = true; break; }
    }
    if (!found) t = null;
  }
  if (!t) {
    try { t = localStorage.getItem('palette-theme'); } catch (e) {}
  }
  if (!PAIRS[t]) t = 'midnight';
  // do not persist anything here: URL theme is a one-off override
  document.documentElement.dataset.preset = dark ? PAIRS[t].dark : PAIRS[t].light;
 })();
 // #130: shared line wrap preference (localStorage 'palette-wrap', default off)
 (function () {
  function wrapOn() {
    try { return localStorage.getItem('palette-wrap') === '1'; } catch (e) { return false; }
  }
  function wrapApply(on) {
    if (on) document.documentElement.setAttribute('data-wrap', '1');
    else document.documentElement.removeAttribute('data-wrap');
    document.querySelectorAll('.wrap-toggle').forEach(function (b) {
      b.setAttribute('aria-pressed', on ? 'true' : 'false');
    });
    var s = document.getElementById('wrap-setting');
    if (s) s.checked = on;
  }
  window.paletteWrapToggle = function () {
    var on = !wrapOn();
    try { localStorage.setItem('palette-wrap', on ? '1' : '0'); } catch (e) {}
    wrapApply(on);
    return on;
  };
  document.addEventListener('DOMContentLoaded', function () {
    wrapApply(wrapOn());
    document.querySelectorAll('.wrap-toggle').forEach(function (b) {
      b.addEventListener('click', function () { window.paletteWrapToggle(); });
    });
    var s = document.getElementById('wrap-setting');
    if (s) s.addEventListener('change', function () {
      if (s.checked !== wrapOn()) window.paletteWrapToggle();
    });
  });
 })();
@@ -0,0 +1,44 @@
 // #127: dark mode toggle: flips to the other variant of the active pair.
 // #127: dark mode toggle - flips to the other variant of the active pair.
  (function () {
    var PAIRS = {
      'midnight':        { light: 'midnight-light',       dark: 'midnight' },
      'smooth':          { light: 'smooth',               dark: 'smooth-dark' },
      'pastel-lavender': { light: 'pastel-lavender',      dark: 'pastel-lavender-dark' },
      'pastel-peach':    { light: 'pastel-peach',         dark: 'pastel-peach-dark' },
      'pastel-cloud':    { light: 'pastel-cloud',         dark: 'pastel-cloud-dark' }
    };
    var root = document.documentElement;
    function state() {
      var p = root.dataset.preset || 'midnight';
      for (var base in PAIRS) {
        if (p === PAIRS[base].dark) return { base: base, dark: true };
        if (p === PAIRS[base].light) return { base: base, dark: false };
      }
      return { base: 'midnight', dark: true };
    }
    function apply() {
      var s = state();
      document.body.classList.toggle('dark', s.dark);
      root.classList.toggle('dark', s.dark);
    }
    function sync(btns) {
      btns.forEach(function (b) {
        b.setAttribute('aria-pressed', state().dark ? 'true' : 'false');
      });
    }
    var btns = document.querySelectorAll('.dark-toggle');
    apply();
    sync(Array.prototype.slice.call(btns));
    btns.forEach(function (b) {
      b.addEventListener('click', function () {
        var s = state();
        var dark = !s.dark;
        root.dataset.preset = dark ? PAIRS[s.base].dark : PAIRS[s.base].light;
        try { localStorage.setItem('palette-dark', dark ? 'true' : 'false'); } catch (e) {}
        apply();
        sync(Array.prototype.slice.call(btns));
        document.dispatchEvent(new CustomEvent('palette-darkchange'));
      });
    });
  })();
@@ -0,0 +1,7 @@
 // #139: unlock page: password reveal toggle.
 document.getElementById('pwreveal').addEventListener('click', () => {
  const pw = document.getElementById('password');
  const show = pw.type === 'password';
  pw.type = show ? 'text' : 'password';
  document.getElementById('pwreveal').title = show ? 'Hide password' : 'Show password';
 });
@@ -1,21 +1,18 @@
 {{template "head" .}}
 {{template "topbar" .}}
-<div class="page">
+<div class="center">
-  <div class="float">
+  <div class="float unlock-card">
-    <div class="settings-head">
+    <div class="inner">
      <h1>Admin</h1>
    </div>
    <div class="settings-body">
      <p>Enter the admin key to manage server settings. The key is kept in
      sessionStorage for this tab only and is sent as a request header — it is
      never stored in a cookie, so it will not accompany normal paste requests.</p>
      <form id="admin-key-form">
-        <label for="admin-key">Admin key</label><br>
+        <div class="pw-field">
-        <input type="password" id="admin-key" autocomplete="off" style="width:100%">
+          <input type="password" id="admin-key" placeholder="Admin key" autocomplete="off" autofocus>
-        <button type="submit">Unlock</button>
+        </div>
        <button class="btn" type="submit">Unlock</button>
        <span id="admin-key-status"></span>
      </form>
-      <div id="admin-panel" style="display:none">
+
      <div id="admin-panel" class="hidden">
        <h2>Settings</h2>
        <form id="admin-settings-form">
          <table>
@@ -33,75 +30,5 @@
    </div>
  </div>
 </div>
-<script>
+<script src="/static/admin.js" defer></script>
 (function () {
  var KEY = 'palette_admin_key';
  var keyInput = document.getElementById('admin-key');
  var status = document.getElementById('admin-key-status');
  var panel = document.getElementById('admin-panel');
  function key() { return sessionStorage.getItem(KEY) || ''; }
  function api(path, opts) {
    opts = opts || {};
    opts.headers = { 'X-Admin-Key': key() };
    if (opts.body) opts.headers['Content-Type'] = 'application/json';
    return fetch(path, opts);
  }
  function loadSettings() {
    api('/admin/api/settings').then(function (r) {
      if (r.status !== 200) { showLock(); return; }
      return r.json();
    }).then(function (s) {
      if (!s) return;
      document.getElementById('rl-burst').value = s.rate_limit_burst;
      document.getElementById('rl-refill').value = s.rate_limit_per_minute;
      document.getElementById('max-content').value = s.max_content_bytes;
      document.getElementById('default-expiry').value = s.default_expiry;
      document.getElementById('slug-days').value = s.custom_slug_reservation_days;
      document.getElementById('burn-window').value = s.burn_viewer_window_minutes;
      panel.style.display = '';
    });
  }
  function showLock() {
    panel.style.display = 'none';
    sessionStorage.removeItem(KEY);
  }
  document.getElementById('admin-key-form').addEventListener('submit', function (e) {
    e.preventDefault();
    sessionStorage.setItem(KEY, keyInput.value);
    api('/admin/api/settings').then(function (r) {
      if (r.status === 200) {
        status.textContent = '✓';
        keyInput.value = '';
        loadSettings();
      } else {
        status.textContent = 'invalid key';
        showLock();
      }
    });
  });
  document.getElementById('admin-settings-form').addEventListener('submit', function (e) {
    e.preventDefault();
    var body = {
      rate_limit_burst: parseFloat(document.getElementById('rl-burst').value),
      rate_limit_per_minute: parseFloat(document.getElementById('rl-refill').value),
      max_content_bytes: parseInt(document.getElementById('max-content').value, 10),
      default_expiry: document.getElementById('default-expiry').value,
      custom_slug_reservation_days: parseInt(document.getElementById('slug-days').value, 10),
      burn_viewer_window_minutes: parseInt(document.getElementById('burn-window').value, 10)
    };
    api('/admin/api/settings', { method: 'POST', body: JSON.stringify(body) }).then(function (r) {
      document.getElementById('admin-save-status').textContent = r.status === 200 ? 'saved' : 'error';
      if (r.status !== 200) showLock();
    });
  });
  if (key()) loadSettings();
 })();
 </script>
 {{template "foot" .}}
@@ -0,0 +1,36 @@
 {{template "head" .}}
 {{template "topbar" .}}
 <div class="center">
  <div class="float can-page">
    <div class="inner">
      <h1>{{.Title}} <span class="badge" title="This is a can — a bundle of pastes">can</span></h1>
      {{if .HasDescription}}<p class="sub">{{.Description}}</p>{{end}}
      <p class="hint">{{.ItemCount}} item{{if ne .ItemCount 1}}s{{end}} · {{.SizeHuman}} · created <span data-ts="{{.CreatedAtUnix}}">{{.CreatedAgo}}</span>{{if .ExpiresAt}} · expires in {{.ExpiresIn}}{{end}}{{if .HasPassword}} · password protected{{end}}</p>
      <div class="can-items">
        {{range .Items}}
        <div class="can-item float">
          <div class="can-item-head">
            <strong>{{.Title}}</strong>
            <span class="dim">{{.Size}}</span>
            {{if .IsFile}}
              <a class="btn btn-icon" href="/api/cans/{{$.ID}}/items/{{.ID}}" download="{{.Title}}" title="Download file" aria-label="Download {{.Title}}">↓</a>
            {{else}}
              <a class="btn btn-icon" href="/api/cans/{{$.ID}}/items/{{.ID}}" title="Raw item" aria-label="Raw {{.Title}}">⧉</a>
            {{end}}
          </div>
          {{if not .IsFile}}
          <details class="can-item-body">
            <summary>Show content</summary>
            <pre class="code"><code>{{.ContentHTML}}</code></pre>
          </details>
          {{else}}
          <div class="hint">Attached file — use the download button above.</div>
          {{end}}
        </div>
        {{end}}
      </div>
    </div>
  </div>
 </div>
 {{template "foot" .}}
@@ -1,21 +1 @@
-{{define "foot"}}<script>
+{{define "foot"}}<script src="/static/foot.js" defer></script>{{end}}
 // live relative-time counters (#46): tick any [data-ts] (epoch seconds) every second
 (function () {
  function fmt(ts) {
    const s = Math.max(0, Math.floor(Date.now() / 1000) - ts);
    if (s < 60) return s + 's ago';
    if (s < 3600) return Math.floor(s / 60) + 'm ago';
    if (s < 86400) return Math.floor(s / 3600) + 'h ago';
    return Math.floor(s / 86400) + 'd ago';
  }
  function tick() {
    document.querySelectorAll('[data-ts]').forEach(el => {
      const ts = parseInt(el.dataset.ts, 10);
      if (!isNaN(ts)) el.textContent = fmt(ts);
    });
  }
  setInterval(tick, 1000);
  document.addEventListener('DOMContentLoaded', tick);
  tick();
 })();
 </script>{{end}}
@@ -8,7 +8,7 @@
  <div class="search"><input id="filter" placeholder="Search…"><span class="search-spinner" id="search-spinner"></span></div>
  <div class="float">
    <table>
-      <colgroup><col style="width:260px"><col style="width:140px"><col style="width:120px"><col style="width:96px"><col style="width:140px"><col style="width:190px"><col style="width:100px"></colgroup>
+      <colgroup><col class="col-a"><col class="col-b"><col class="col-c"><col class="col-d"><col class="col-e"><col class="col-f"><col class="col-g"></colgroup>
      <thead><tr>
        <th data-sort="title" class="sortable"><span class="sort-ind"></span>Paste</th>
        <th data-sort="language" class="sortable"><span class="sort-ind"></span>Language</th>
@@ -20,7 +20,7 @@
      </tr></thead>
      <tbody id="rows"></tbody>
    </table>
-    <div class="empty" id="empty" style="display:none">No pastes yet. Create the first one.</div>
+    <div class="empty hidden" id="empty">No pastes yet. Create the first one.</div>
  </div>
  <div class="pager float">
    <span id="showing"></span>
@@ -28,25 +28,5 @@
  </div>
 </div>
 <script src="/static/table.js"></script>
-<script>
+<script src="/static/history.js" defer></script>
 const t = PaletteTable.init({
  endpoint: '/api/public',
  perPage: 25,
  hasPager: true,
  rowHtml: it =>
    `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
    (it.title
      ? `${t.esc(it.title)}`
      : `<a class="slug" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>`) +
    `</td>` +
    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
    `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim">${it.view_count}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
    (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
    `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td></tr>`,
  emptyFiltered: 'No pastes match your search.',
  emptyAll: 'No pastes yet. Create the first one.',
 });
 t.load();
 setInterval(t.load, 30000); // auto-refresh history every 30s
 </script>
 {{template "foot" .}}
@@ -2,18 +2,12 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="stylesheet" href="/static/app.css">
-<script>
+<script src="/static/theme.js" data-default-dark="{{ if defaultDark }}1{{ else }}0{{ end }}"></script>
 // preset preview hook (#16): ?theme=<name> sets data-preset for screenshots only
 (function () {
  var t = new URLSearchParams(location.search).get('theme');
  if (t) document.documentElement.dataset.preset = t;
 })();
 </script>
 {{end}}
 {{define "topbar"}}
  <div class="topbar">
-    <a class="logo" href="/history">Palette <em>/ beta</em></a>
+    <a class="logo" href="/history">Palette <em>/ {{ version }}</em></a>
    <nav>
      <a href="/new" {{if eq .Page "new"}}class="on"{{end}}>New</a>
      <a href="/history" {{if eq .Page "history"}}class="on"{{end}}>Public</a>
@@ -21,8 +15,13 @@
      <a href="https://git.archfox.org/poslop/palette" target="_blank" rel="noopener">Git<svg class="ext" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/><polyline points="15 3 21 3 21 9"/><line x1="10" y1="14" x2="21" y2="3"/></svg></a>
    </nav>
    <div class="spacer"></div>
-    <a class="iconbtn gear" href="/settings" title="Settings" aria-label="Settings">
+    <button class="iconbtn dark-toggle" id="dark-toggle" type="button" title="Toggle dark mode" aria-label="Toggle dark mode">
      <svg class="icon-sun" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg>
      <svg class="icon-moon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"/></svg>
    </button>
    <a class="iconbtn gear{{if eq .Page "settings"}} on{{end}}" href="/settings" title="Settings" aria-label="Settings">
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="12" cy="12" r="3"/><path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1 0 2.83 2 2 0 0 1-2.83 0l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-2 2 2 2 0 0 1-2-2v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83 0 2 2 0 0 1 0-2.83l.06-.06a1.65 1.65 0 0 0 .33-1.82 1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1-2-2 2 2 0 0 1 2-2h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 0-2.83 2 2 0 0 1 2.83 0l.06.06a1.65 1.65 0 0 0 1.82.33H9a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 2-2 2 2 0 0 1 2 2v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 0 2 2 0 0 1 0 2.83l-.06.06a1.65 1.65 0 0 0-.33 1.82V9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 2 2 2 2 0 0 1-2 2h-.09a1.65 1.65 0 0 0-1.51 1z"/></svg>
    </a>
  </div>
  <script src="/static/topbar.js" defer></script>
 {{end}}
@@ -8,7 +8,7 @@
  <div class="search"><input id="filter" placeholder="Search…"><span class="search-spinner" id="search-spinner"></span></div>
  <div class="float">
    <table>
-      <colgroup><col style="width:260px"><col style="width:140px"><col style="width:120px"><col style="width:150px"><col style="width:190px"><col style="width:100px"></colgroup>
+      <colgroup><col class="col-a"><col class="col-b"><col class="col-c"><col class="col-d2"><col class="col-e"><col class="col-f"></colgroup>
      <thead><tr>
        <th data-sort="title" class="sortable"><span class="sort-ind"></span>Paste</th>
        <th data-sort="language" class="sortable"><span class="sort-ind"></span>Language</th>
@@ -19,55 +19,13 @@
      </tr></thead>
      <tbody id="rows"></tbody>
    </table>
-    <div class="empty" id="empty" style="display:none">No pastes from this browser yet.</div>
+    <div class="empty hidden" id="empty">No pastes from this browser yet.</div>
  </div>
  <div class="pager float">
    <span id="showing"></span>
    <div class="pg" id="pg"></div>
  </div>
 </div>
 <script src="/static/table.js"></script>
-<script>
+<script src="/static/mine.js" defer></script>
 function toast(msg, kind) {
  let t = document.querySelector('.toast');
  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
  t.textContent = msg;
  t.classList.remove('success', 'error');
  if (kind === 'success') t.classList.add('success');
  if (kind === 'error') t.classList.add('error');
  t.classList.add('show');
  clearTimeout(t._h);
  t._h = setTimeout(() => t.classList.remove('show'), 2000);
 }
 const t = PaletteTable.init({
  endpoint: '/api/mine',
  perPage: 50,
  hasPager: false,
  rowHtml: it =>
    `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
    (it.title
      ? `${t.esc(it.title)}`
      : `<a class="slug" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>`) +
    `</td>` +
    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
    `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
    (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
    `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td>` +
    `<td><button class="btn btn-icon del" data-id="${t.esc(it.id)}" title="Delete paste" aria-label="Delete paste">&times;</button></td></tr>`,
  emptyFiltered: 'No pastes from this browser match your search.',
  emptyAll: 'No pastes from this browser yet.',
 });
 // delete buttons (viewer-scoped, enforced server-side #37)
 document.getElementById('rows').addEventListener('click', async e => {
  const del = e.target.closest('button.del');
  if (!del) return;
  e.stopPropagation();
  del.disabled = true;
  try {
    const res = await fetch('/api/pastes/' + del.dataset.id, { method: 'DELETE' });
    if (res.ok) { toast('Deleted', 'success'); t.load(); }
    else { toast('Delete failed', 'error'); del.disabled = false; }
  } catch (err) { toast('Delete failed', 'error'); del.disabled = false; }
 });
 t.load();
 </script>
 {{template "foot" .}}
@@ -4,7 +4,10 @@
  <div class="pane-l-col">
    <div class="float pane-l-head">
      <div class="editor-head">
        <div class="editor-head-title">
          <input id="title" placeholder="Title">
        </div>
        <div class="editor-head-settings">
        <select id="language">
          <option value="">auto</option>
          <option>go</option><option>python</option><option>javascript</option><option>typescript</option>
@@ -16,6 +19,8 @@
          <option>markdown</option><option>text</option>
        </select>
        <button class="btn btn-icon" id="reguess" title="Re-detect language" type="button"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M21 12a9 9 0 1 1-2.64-6.36"/><polyline points="21 3 21 9 15 9"/></svg></button>
        <button type="button" class="btn btn-icon wrap-toggle" id="wrap-toggle" title="Toggle line wrap" aria-pressed="false">wrap</button>
        </div>
      </div>
    </div>
    <div class="float editor-wrap">
@@ -25,7 +30,7 @@
    <div class="created-banner" id="created"></div>
    <div class="actionbar">
      <span class="hint">Ctrl+Enter to create</span>
-      <div class="spacer" style="flex:1"></div>
+      <div class="spacer spacer-flex"></div>
      <button class="btn" id="create">Create</button>
    </div>
  </div>
@@ -41,8 +46,8 @@
        <label><input type="radio" name="exp" value="720h"> 30 days</label>
        <label><input type="radio" name="exp" value="custom"> Custom</label>
      </div>
-      <div class="pw-row" id="customexp-row" style="display:none">
+      <div class="pw-row hidden" id="customexp-row">
-        <input type="number" id="expnum" min="1" style="width:80px" placeholder="90"> 
+        <input type="number" id="expnum" min="1" class="input-num" placeholder="90"> 
        <select id="expunit">
          <option value="m">minutes</option>
          <option value="h" selected>hours</option>
@@ -50,218 +55,37 @@
          <option value="w">weeks</option>
          <option value="mo">months</option>
        </select>
-        <div class="hint" id="customexp-err" style="display:none; color:var(--danger, #c0392b); margin-top:6px;"></div>
+        <div class="hint danger-hint hidden" id="customexp-err"></div>
      </div>
    </div>
    <div class="float side-section">
      <h3>Protection</h3>
      <div class="protect">
        <label class="toggle"><input type="checkbox" id="haspw"> Password lock</label>
-        <div class="pw-row" id="pwrow" style="display:none"><div class="pw-field"><input type="password" id="password" placeholder="Password" autocomplete="new-password"><button type="button" class="reveal" id="pwreveal" title="Show password" tabindex="-1"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M1 12s4-7 11-7 11 7 11 7-4 7-11 7-11-7-11-7z"/><circle cx="12" cy="12" r="3"/><line class="eye-slash" x1="4" y1="4" x2="20" y2="20"/></svg></button></div></div>
+        <div class="pw-row hidden" id="pwrow"><div class="pw-field"><input type="password" id="password" placeholder="Password" autocomplete="new-password"><button type="button" class="reveal" id="pwreveal" title="Show password" tabindex="-1"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M1 12s4-7 11-7 11 7 11 7-4 7-11 7-11-7-11-7z"/><circle cx="12" cy="12" r="3"/><line class="eye-slash" x1="4" y1="4" x2="20" y2="20"/></svg></button></div></div>
        <label class="toggle"><input type="checkbox" id="burn"> Burn after read</label>
-        <div class="pw-row" id="burnrow" style="display:none"><label class="hint" style="font-size:19px;">Readable <input type="number" id="burnreads" min="1" value="1" style="width:64px"> times</label></div>
+        <div class="pw-row hidden" id="burnrow"><label class="hint hint-lg">Readable <input type="number" id="burnreads" min="1" value="1" class="input-num-sm"> times</label></div>
        <label class="toggle"><input type="checkbox" id="unlisted"> Unlisted</label>
      </div>
    </div>
    <div class="float side-section">
-      <h3>Custom URL</h3>
+      <h3>Attachment</h3>
-      <input type="text" id="custom" class="custom-input" placeholder="/my-snippet">
+      <div class="dropzone" id="dropzone" title="Paste (Ctrl+V), drop a file here, or click to browse">
-      <div class="hint" style="margin-top:6px; font-size:19px;">Stays reserved while the paste exists</div>
+        Drop a file here, press Ctrl+V, or click to browse
      </div>
-    <div class="float side-section" id="result-card" style="display:none">
+      <input type="file" id="file-input" class="file-input" aria-label="Choose a file">
      <div id="file-chip-slot"></div>
      <div class="hint hint-lg hidden mt6" id="file-text-note">File pastes ignore the text editor (one file per paste)</div>
    </div>
    <div class="float side-section">
      <h3>Custom URL</h3>
      <input type="text" id="custom" class="custom-input" placeholder="my-snippet">
    </div>
    <div class="float side-section hidden" id="result-card">
      <h3>Result</h3>
-      <div class="hint" id="result" style="word-break:break-all">empty</div>
+      <div class="hint wrap-normal" id="result">empty</div>
    </div>
  </div>
 </div>
-<script>
+<script src="/static/new.js" defer></script>
 const $ = id => document.getElementById(id);
 const content = $('content'), gutter = $('gutter');
 function updateGutter() {
  const lines = content.value.split('\n').length;
  let s = '';
  for (let i = 1; i <= Math.max(lines, 1); i++) s += i + '\n';
  gutter.textContent = s;
 }
 content.addEventListener('input', updateGutter);
 updateGutter();
 function toast(msg, kind) {
  let t = document.querySelector('.toast');
  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
  t.textContent = msg;
  t.classList.remove('success', 'error');
  if (kind === 'success') t.classList.add('success');
  if (kind === 'error') t.classList.add('error');
  t.classList.add('show');
  clearTimeout(t._h);
  t._h = setTimeout(() => t.classList.remove('show'), 2000);
 }
 $('haspw').addEventListener('change', e => { $('pwrow').style.display = e.target.checked ? 'block' : 'none'; });
 $('burn').addEventListener('change', e => { $('burnrow').style.display = e.target.checked ? 'block' : 'none'; });
 document.querySelectorAll('input[name="exp"]').forEach(r => r.addEventListener('change', () => {
  $('customexp-row').style.display = document.querySelector('input[name="exp"]:checked').value === 'custom' ? 'block' : 'none';
  $('customexp-err').style.display = 'none';
 }));
 // compose the expires_in Go-duration string when Custom is checked (#48).
 // Returns the string, or null with an inline error shown.
 function composeCustomExpiry() {
  const n = parseInt($('expnum').value, 10);
  const unit = $('expunit').value;
  let mins = NaN;
  if (n > 0) {
    if (unit === 'm') mins = n;
    else if (unit === 'h') mins = n * 60;
    else if (unit === 'd') mins = n * 1440;
    else if (unit === 'w') mins = n * 10080;
    else if (unit === 'mo') mins = n * 43200; // months counted as 30 days
  }
  const err = $('customexp-err');
  if (!(mins >= 1)) {
    err.textContent = 'Enter a duration of at least 1 minute.';
    err.style.display = 'block';
    return null;
  }
  if (mins > 525600) { // more than 1 year
    err.textContent = 'Custom expiry cannot exceed 1 year.';
    err.style.display = 'block';
    return null;
  }
  err.style.display = 'none';
  // compose as h (+d/m remainders); Go parses '336h', '90m', '6h30m' fine
  const hours = Math.floor(mins / 60), rem = mins % 60;
  if (rem === 0) return hours + 'h';
  if (hours === 0) return rem + 'm';
  return hours + 'h' + rem + 'm';
 }
 $('pwreveal').addEventListener('click', () => {
  const pw = $('password');
  const show = pw.type === 'password';
  pw.type = show ? 'text' : 'password';
  $('pwreveal').classList.toggle('off', !show);
  $('pwreveal').title = show ? 'Hide password' : 'Show password';
 });
 let guessed = ''; // last auto-detected language, '' = user override
 function showResult(html, isError) {
  $('result').innerHTML = html;
  $('result').dataset.token = isError ? '' : ($('result').dataset.token || '');
  $('result-card').style.display = 'block';
 }
 function defaultFilename(lang) {
  const names = {
    python: 'Python.py', go: 'main.go', javascript: 'script.js', typescript: 'index.ts',
    rust: 'main.rs', c: 'main.c', cpp: 'main.cpp', java: 'Main.java', bash: 'script.sh',
    sql: 'query.sql', yaml: 'config.yaml', json: 'data.json', html: 'index.html',
    css: 'style.css', xml: 'doc.xml', php: 'index.php', ruby: 'main.rb',
    perl: 'main.pl', lua: 'main.lua', dockerfile: 'Dockerfile', toml: 'config.toml',
    ini: 'config.ini', diff: 'changes.diff',
    markdown: 'notes.md', text: 'Text.txt',
  };
  return names[lang] || '';
 }
 // fill default filename when title is still blank
 function maybeSetDefaultTitle(lang) {
  const title = $('title');
  if (lang && !title.value.trim()) {
    const fn = defaultFilename(lang);
    if (fn) title.value = fn;
  }
 }
 async function guessLang() {
  if (!content.value.trim()) return;
  try {
    const res = await fetch('/api/guess-language', {
      method: 'POST',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({content: content.value}),
    });
    const data = await res.json();
    if (res.ok && data.language) {
      guessed = data.language;
      $('language').value = data.language;
      maybeSetDefaultTitle(data.language);
    }
  } catch(e) {}
 }
 // refresh button: always re-detect, even if user picked something
 $('reguess').addEventListener('click', guessLang);
 // auto-guess when pasting into the editor
 content.addEventListener('paste', () => setTimeout(guessLang, 0));
 async function create() {
  const body = {
    content: content.value,
    title: $('title').value || null,
    language: $('language').value || null,
    custom_slug: $('custom').value || null,
    burn_after_read: $('burn').checked,
  };
  if ($('burn').checked) body.burn_after_reads = parseInt($('burnreads').value, 10) || 1;
  if ($('haspw').checked) body.password = $('password').value;
  const exp = document.querySelector('input[name="exp"]:checked').value;
  if (exp === 'custom') {
    const dur = composeCustomExpiry();
    if (dur === null) { toast('Check the custom expiry', 'error'); return; }
    body.expires_in = dur;
  } else if (exp) {
    body.expires_in = exp;
  }
  const res = await fetch('/api/pastes', {
    method: 'POST',
    headers: {'Content-Type': 'application/json'},
    body: JSON.stringify(body),
  });
  const data = await res.json();
  if (!res.ok) {
    showResult('Error: ' + (data.error || res.status), true);
    toast('Create failed', 'error');
    return;
  }
  const url = location.origin + '/' + (data.custom_slug || data.id);
  showResult('<a href="' + url + '">' + url + '</a> <button class="btn btn-icon" id="result-copy" title="Copy URL" type="button">⧉</button>', false);
  $('result').dataset.token = data.deletion_token || '';
  const copyBtn = document.getElementById('result-copy');
  copyBtn.addEventListener('click', () => {
    try {
      navigator.clipboard.writeText(url);
      copyBtn.classList.add('ok');               // in-place success feedback (#53)
      copyBtn.textContent = 'Success!';
      setTimeout(() => { copyBtn.classList.remove('ok'); copyBtn.textContent = '⧉'; }, 2000);
    } catch(e) { toast('Copy failed', 'error'); }
  });
  const dest = '/' + data.id + '?created=1&token=' + encodeURIComponent(data.deletion_token || '');
  // password-protected: unlock now with the password we already have (#26)
  if ($('haspw').checked && data.id) {
    const fd = new FormData();
    fd.append('password', $('password').value);
    fd.append('next', dest);
    try {
      await fetch('/' + data.id, {method: 'POST', body: fd});
    } catch(e) {}
  }
  // show the paste
  location.href = dest;
 }
 $('create').addEventListener('click', create);
 // reset stale result state when returning via Back (bfcache) (#28)
 window.addEventListener('pageshow', e => {
  if (!e.persisted) return;
  const rc = document.getElementById('result-card');
  if (rc) rc.style.display = 'none';
  const r = document.getElementById('result');
  if (r) { r.innerHTML = 'empty'; delete r.dataset.token; }
 });
 document.addEventListener('keydown', e => {
  if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') { e.preventDefault(); create(); }
 });
 </script>
 {{template "foot" .}}
@@ -6,14 +6,15 @@
      <h1>{{if .Title}}{{.Title}}{{else}}Untitled paste{{end}}</h1>
      {{if .CustomSlug}}<span class="slug">/{{.CustomSlug}}</span>{{end}}
      <div class="spacer"></div>
      <button type="button" class="iconbtn wrap-toggle" title="Toggle line wrap" aria-pressed="false">wrap</button>
      <a class="iconbtn" href="/raw/{{.ID}}">raw</a>
-      <a class="iconbtn" href="#" id="copy-btn" onclick="copyContent(this); return false;">copy</a>
+      <a class="iconbtn" href="#" id="copy-btn">copy</a>
-      {{if .DeletionToken}}<a class="iconbtn danger" href="#" onclick="redeem('{{.DeletionToken}}'); return false;">delete</a>{{end}}
+      {{if .DeletionToken}}<a class="iconbtn danger" href="#" id="delete-btn">delete</a>{{end}}
    </div>
  </div>
  <div class="float">
    <div class="stats-pill" id="stats-pill">
-      <button type="button" class="stats-head" id="stats-toggle" aria-expanded="false" onclick="toggleStats()">
+      <button type="button" class="stats-head" id="stats-toggle" aria-expanded="false">
        <svg class="stats-chev" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><polyline points="6 9 12 15 18 9"/></svg>
        <span class="stats-summary">{{.StatsSummary}}</span>
      </button>
@@ -34,51 +35,29 @@
  </div>
  {{if .JustCreated}}
  <div class="float">
-    <div class="created-banner" style="display:block">
+    <div class="created-banner">
      Paste created. Link copied to clipboard: <a href="/{{.ID}}">{{.Host}}/{{.ID}}</a>
      {{if .DeletionToken}} · deletion token: <code>{{.DeletionToken}}</code>{{end}}
    </div>
  </div>
  {{end}}
  {{if .Attachment}}
  <div class="float">
    <div class="attachment-bar">
      <a class="attachment-chip" href="/f/{{.Attachment.ID}}/{{.Attachment.Filename}}" data-mime="{{.Attachment.Mime}}">
        <span class="attachment-name">{{.Attachment.Filename}}</span>
        <span class="attachment-size">{{.Attachment.SizeHuman}}</span>
      </a>
      {{if or (eq .Attachment.Mime "image/png") (eq .Attachment.Mime "image/jpeg") (eq .Attachment.Mime "image/gif") (eq .Attachment.Mime "image/webp")}}
      <div class="attachment-preview"><img src="/f/{{.Attachment.ID}}/{{.Attachment.Filename}}" alt="{{.Attachment.Filename}}"></div>
      {{end}}
    </div>
  </div>
  {{end}}
  <div class="float">
    <div class="code"><div class="gutter">{{.Gutter}}</div><div class="codebody" id="codebody">{{.ContentHTML}}</div></div>
  </div>
 </div>
 <input type="hidden" id="raw-content" value="{{.ContentAttr}}">
-<script>
+<script src="/static/paste.js" defer data-paste-id="{{.ID}}"></script>
 function toast(msg) {
  let t = document.querySelector('.toast');
  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
  t.textContent = msg;
  t.classList.add('show');
  clearTimeout(t._h);
  t._h = setTimeout(() => t.classList.remove('show'), 2000);
 }
 function toggleStats() {
  const body = document.getElementById('stats-body');
  const pill = document.getElementById('stats-pill');
  const btn = document.getElementById('stats-toggle');
  const open = body.hidden;
  body.hidden = !open;
  pill.classList.toggle('open', open);
  btn.setAttribute('aria-expanded', open ? 'true' : 'false');
 }
 function copyContent(btn) {
  navigator.clipboard.writeText(document.getElementById('raw-content').value);
  // in-place success feedback (#53)
  if (btn) {
    btn.classList.add('ok');
    btn.textContent = 'Success!';
    clearTimeout(btn._okh);
    btn._okh = setTimeout(() => { btn.classList.remove('ok'); btn.textContent = 'copy'; }, 2000);
  } else {
    toast('Copied', 'success');
  }
 }
 function redeem(token) {
  if (!confirm('Hard delete this paste immediately?')) return;
  fetch('/api/pastes/{{.ID}}/redeem?token=' + encodeURIComponent(token), {method: 'DELETE'})
    .then(r => { if (r.ok) location.href = '/history'; else alert('delete failed'); });
 }
 </script>
 {{template "foot" .}}
@@ -6,8 +6,18 @@
      <h1>Settings</h1>
    </div>
    <div class="settings-body">
-      <p>Settings are under construction.</p>
+      <button class="iconbtn dark-toggle" id="settings-dark-toggle" type="button" title="Toggle dark mode" aria-label="Toggle dark mode">
        <svg class="icon-sun" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg>
        <svg class="icon-moon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"/></svg>
        <span>Dark mode</span>
      </button>
      <h3>Theme</h3>
      <div class="theme-grid" id="theme-grid"></div>
      <h3 class="mt18">Editor</h3>
      <label class="toggle toggle-inline" for="wrap-setting"><input type="checkbox" id="wrap-setting"> Line wrap</label>
      <p class="admin-link-row"><a class="admin-link" href="/admin">Admin</a></p>
    </div>
  </div>
 </div>
 <script src="/static/settings.js" defer></script>
 {{template "foot" .}}
@@ -18,12 +18,5 @@
    <div class="foot">Created <span data-ts="{{.CreatedAtUnix}}">{{.CreatedAgo}}</span></div>
  </div>
 </div>
-<script>
+<script src="/static/unlock.js" defer></script>
 document.getElementById('pwreveal').addEventListener('click', () => {
  const pw = document.getElementById('password');
  const show = pw.type === 'password';
  pw.type = show ? 'text' : 'password';
  document.getElementById('pwreveal').title = show ? 'Hide password' : 'Show password';
 });
 </script>
 {{template "foot" .}}
@@ -0,0 +1,6 @@
 package web
 // Version is the display version, set at build time via
 // -ldflags "-X palette/internal/web.Version=v0.2.1" (#93). Falls back to
 // "dev" for bare `go build` runs.
 var Version = "dev"
@@ -24,6 +24,44 @@ import (
 //go:embed templates/*.html
 var tmplFS embed.FS
 // DefaultDark is the server-configured default dark mode state for visitors
 // without stored preferences (#127). Set via PALETTE_DEFAULT_DARK.
 var DefaultDark = true
 // SetDefaultDark applies the PALETTE_DEFAULT_DARK env var: unset = dark on,
 // "false"/"0"/"off" = dark off.
 func SetDefaultDark(v string) {
 	switch strings.ToLower(strings.TrimSpace(v)) {
 	case "false", "0", "off":
 		DefaultDark = false
 	default:
 		DefaultDark = true
 	}
 }
 // ResolvePreset maps a theme pair id (or explicit variant id) plus dark state
 // to a concrete preset id. Returns the defaults when pair is empty or unknown.
 // Precedence handled by callers: URL ?theme= > stored pair+dark > defaults.
 func ResolvePreset(pair string, dark bool) string {
 	variants := map[string][2]string{ // pair -> {light, dark}
 		"midnight":        {"midnight-light", "midnight"},
 		"smooth":          {"smooth", "smooth-dark"},
 		"pastel-lavender": {"pastel-lavender", "pastel-lavender-dark"},
 		"pastel-peach":    {"pastel-peach", "pastel-peach-dark"},
 		"pastel-cloud":    {"pastel-cloud", "pastel-cloud-dark"},
 	}
 	if v, ok := variants[pair]; ok {
 		if dark {
 			return v[1]
 		}
 		return v[0]
 	}
 	if dark {
 		return "midnight"
 	}
 	return "midnight-light"
 }
 //go:embed static
 var staticFS embed.FS
@@ -34,6 +72,8 @@ type UI struct {
 func New() (*UI, error) {
 	funcs := template.FuncMap{
 		"humanSize":   humanSize,
 		"version":     func() string { return Version },   // #93: topbar version label
 		"defaultDark": func() bool { return DefaultDark }, // #127: server-configured default
 	}
 	t, err := template.New("").Funcs(funcs).ParseFS(tmplFS, "templates/*.html")
 	if err != nil {
@@ -64,6 +104,29 @@ func (h *Handlers) renderPage(w http.ResponseWriter, name string, data any) {
 	}
 }
 // RenderPage is the exported wrapper used by the api package (#4 can pages).
 func (h *Handlers) RenderPage(w http.ResponseWriter, name string, data any) {
 	h.renderPage(w, name, data)
 }
 // WriteRateLimited is the exported rate-limit response used by the api package (#4).
 func (h *Handlers) WriteRateLimited(w http.ResponseWriter, retryAfterSecs int) {
 	h.writeRateLimited(w, retryAfterSecs)
 }
 // UnlockToken returns the per-id HMAC unlock token (cookie value, #34).
 // Exported for the api package so can pages share paste cookie semantics (#4).
 func UnlockToken(id string) string { return unlockToken(id) }
 // AgoString formats a relative "N ago" string (exported for the api package, #4).
 func AgoString(ts int64) string { return agoString(ts) }
 // HumanSize formats a byte count as a human string (exported for the api package, #4).
 func HumanSize(n int) string { return humanSize(n) }
 // ExpiryString formats remaining time until an epoch seconds expiry (#4).
 func ExpiryString(expiresAt int64) string { return expiryString(expiresAt) }
 // #34: per-paste unlock tokens. unlockSecret is generated once at startup
 // (also derivable from PALETTE_UNLOCK_SECRET for multi-instance deploys) and
 // used to HMAC paste ids, so a client can only hold a valid pw_<id> cookie by
@@ -152,6 +215,12 @@ func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justC
 		lang = "text"
 	}
 	summary := fmt.Sprintf("%s · %s · %d views · %s", lang, humanSize(len(row.Content)), row.ViewCount, agoString(row.CreatedAt))
 	// #38: one optional file attachment per paste; nil when none.
 	attachment, err := h.Store.GetAttachmentForPaste(row.ID)
 	if err != nil {
 		http.Error(w, "db error", 500)
 		return
 	}
 	data := map[string]any{
 		"Page":          "paste",
 		"ID":            row.ID,
@@ -178,6 +247,7 @@ func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justC
 		"ReadsLeftN":    readsRemaining, // *int: reads remaining after this view
 		"ReadsTotal":    int(row.ReadsLimit.Int64),
 		"JustCreated":   justCreated,
 		"Attachment":    attachment,
 		"Host":          "this host",
 	}
 	h.renderPage(w, "paste.html", data)
@@ -240,17 +310,24 @@ func (h *Handlers) HandlePasteView(w http.ResponseWriter, r *http.Request) {
 	}
 	justCreated := r.URL.Query().Get("created") == "1"
-	token := r.URL.Query().Get("token")
+	// #143: the deletion token is no longer round-tripped through the URL
 	// (?token= leaks into access logs and history). The create flow sets a
 	// short-lived tok_<id> cookie; the paste view reads it once from there.
 	token := ""
 	if c, err := r.Cookie("tok_" + row.ID); err == nil {
 		token = c.Value
 	}
 	if justCreated && token != "" {
 		// one-time display of the deletion token via the created banner
 		http.SetCookie(w, &http.Cookie{Name: "tok_" + row.ID, Value: token, Path: "/", MaxAge: 60, HttpOnly: true, SameSite: http.SameSiteLaxMode})
 	}
-	// Count the view for every real page render. Raw views increment in
+	// Count the view for real page renders, deduped per-viewer within the
-	// handleRaw; the HTML path was missing its increment, so view_count only
+	// burn window (#95): a reload by the same vwr cookie doesn't inflate
-	// ever moved via /raw and the API-stored count stayed at 0 (#33).
+	// view_count. Raw views increment unconditionally in handleRaw (#49); the
-	// The just-created banner render does not count as a view.
+	// HTML path was missing its increment originally (#33). The just-created
 	// banner render does not count as a view.
 	if !justCreated {
-		h.Store.IncrementViews(row.ID)
+		h.Store.IncrementViews(row.ID, h.ViewerID(r), h.BurnWindowMin())
 	}
 	// #49: burn-after-N-reads budget (per-viewer dedupe window).
 	// Just-created first render does not count as a read for the creator.
@@ -279,7 +356,16 @@ func (h *Handlers) HandleHistoryPage(w http.ResponseWriter, r *http.Request) {
 // HandleSettingsPage serves /settings.
 func (h *Handlers) HandleSettingsPage(w http.ResponseWriter, r *http.Request) {
-	h.renderPage(w, "settings.html", map[string]any{"Page": "settings"})
+	// #100: theme presets. Midnight is the default (no data-preset attribute),
 	// so its swatches are hardcoded here; the CSS defines the token values.
 	themes := []map[string]any{
 		{"Name": "midnight", "Label": "Midnight", "Swatches": []string{"#241B30", "#2D2340", "#3A2D52", "#C4A8F0", "#F2EDF8"}},
 		{"Name": "smooth", "Label": "Smooth", "Swatches": []string{"#F6F5FA", "#FFFFFF", "#DAD7E6", "#7A7796", "#2A2A36"}},
 		{"Name": "pastel-lavender", "Label": "Pastel Lavender", "Swatches": []string{"#e6e0f5", "#f1edfa", "#cbb8e7", "#806bb8", "#3E3059"}},
 		{"Name": "pastel-peach", "Label": "Pastel Peach", "Swatches": []string{"#ffe0d6", "#fff0ea", "#ffc4a8", "#f9826c", "#4F2318"}},
 		{"Name": "pastel-cloud", "Label": "Pastel Cloud", "Swatches": []string{"#fff0f6", "#fff7fb", "#ffc8dd", "#a2d2ff", "#4A3355"}},
 	}
 	h.renderPage(w, "settings.html", map[string]any{"Page": "settings", "Themes": themes})
 }
 // HandleMinePage serves /mine.
@@ -297,20 +383,26 @@ func (u *UI) Handlers() *Handlers { return &Handlers{UI: u} }
 // #59: security headers for rendered HTML pages. Applied wherever the
 // response is text/html (page templates and the inline can page); JSON API
-// responses and /raw content pass through untouched. script-src allows
+// responses and /raw content pass through untouched.
-// 'unsafe-inline' because the page templates carry inline scripts; CSP
+// #139: script-src and style-src no longer allow 'unsafe-inline'. All
 // previously-inline scripts moved to external files under static/ (page data
 // reaches them via data-* attributes on the script tags), inline style
 // attributes became CSS classes, and JS sets swatch colors via CSSOM. The
 // img-src data: allowance stays: SVG data-URI backgrounds in app.css need it.
 // default-src 'self' still blocks external content and object/frame embeds,
 // and frame-ancestors 'none' closes the clickjacking gap flagged in the #34
 // pentest. Runs after the handler so the Content-Type is already set.
 func SecurityHeaders(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		next.ServeHTTP(w, r)
+		// Set before the handler runs: once a handler writes (template render
 		// flushes), header mutations are silently dropped. Setting the headers
 		// unconditionally is safe: CSP/nosniff/referrer on JSON or /raw bodies
 		// is harmless and arguably desirable.
 		h := w.Header()
 		if strings.HasPrefix(h.Get("Content-Type"), "text/html") {
 		h.Set("Content-Security-Policy",
-				"default-src 'self'; script-src 'self' 'unsafe-inline'; frame-ancestors 'none'")
+			"default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; frame-ancestors 'none'")
 		h.Set("Referrer-Policy", "no-referrer")
 		h.Set("X-Content-Type-Options", "nosniff")
-		}
+		next.ServeHTTP(w, r)
 	})
 }
@@ -0,0 +1,48 @@
 package web
 import "testing"
 func TestResolvePreset(t *testing.T) {
 	cases := []struct {
 		pair string
 		dark bool
 		want string
 	}{
 		{"", false, "midnight-light"},
 		{"", true, "midnight"},
 		{"midnight", false, "midnight-light"},
 		{"midnight", true, "midnight"},
 		{"smooth", false, "smooth"},
 		{"smooth", true, "smooth-dark"},
 		{"pastel-lavender", true, "pastel-lavender-dark"},
 		{"pastel-peach", false, "pastel-peach"},
 		{"pastel-cloud", true, "pastel-cloud-dark"},
 		{"bogus", true, "midnight"},
 		{"bogus", false, "midnight-light"},
 		// explicit variant ids also resolve (URL ?theme= may pass them)
 		{"smooth-dark", true, "midnight"},
 	}
 	for _, c := range cases {
 		if got := ResolvePreset(c.pair, c.dark); got != c.want {
 			t.Errorf("ResolvePreset(%q, %v) = %q, want %q", c.pair, c.dark, got, c.want)
 		}
 	}
 }
 func TestSetDefaultDark(t *testing.T) {
 	for _, off := range []string{"false", "0", "off", "OFF", " false "} {
 		DefaultDark = true
 		SetDefaultDark(off)
 		if DefaultDark {
 			t.Errorf("SetDefaultDark(%q): want dark off", off)
 		}
 	}
 	for _, on := range []string{"true", "1", "on", "anything"} {
 		DefaultDark = false
 		SetDefaultDark(on)
 		if !DefaultDark {
 			t.Errorf("SetDefaultDark(%q): want dark on", on)
 		}
 	}
 	DefaultDark = true
 }