Merge pull request '#296 fix attempt 3: shrink URL column, plain-text URL values' (#301) from fix-296-r3 into dev

Owner override postdating PR #300 QA pass:
- .col-url 340 -> 230px; reclaim slack from history-only columns (Views 96->90,
  Created 190->150, ID 190->120) so the table fits the .float pane with no
  horizontal scroll at 1400x900 and the ID column is fully visible.
- URL anchors drop the shared .slug pill (background/padding/radius/mono font)
  and render plain, styled via td.dim exactly like the none case; links stay
  anchors with accent hover. Ellipsis kept for genuinely long slugs.

Verified by CDP probe on a local build at 1400x900 and 375x812 on /public and
/mine (/saved): column order, table fits pane (scrollWidth == clientWidth),
20-char slug fully visible, min Created-to-URL content gap 77px, sort arrows
intact 6px right of labels, no CSP/console violations. go build/test pass.

README.md

@@ -1,7 +1,7 @@
 # Palette
 
 Palette is a fast, self-hosted pastebin. One Go binary, a SQLite database, and
-a web UI for sharing text and small files
+a web UI for sharing text and small files.
 
 > [!NOTE]
 > <table><tr><td>
@@ -10,22 +10,27 @@ a web UI for sharing text and small files
 
 ## Features
 
-- Multiple files in one paste
+- Text pastes and cans (multiple items in one share)
+- File attachments (one file per paste, up to 25 MB)
 - Password protected pastes
-- Expir after a specified time
+- Expire after a specified time
 - Burn after a number of views
 - Custom URLs
 - Syntax highlighting with language auto-detection (go-enry)
-- Local cookie based submission history
-- Cookie based settings
-- Themes!
+- Public paste listing with search, sort and pagination
+- Cookie based saved pastes and settings
+- Five base themes (midnight, smooth, pastel-lavender, pastel-peach, pastel-cloud), each with a dark and light variant
+- Dark mode toggle in the topbar and settings, with a configurable default
+- Polished code viewer: line-number gutter sized to the widest number and pinned during horizontal scroll, optional line wrap, jump-to-top/bottom buttons, and theme-aware scrollbars
 
 ## 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) |
+| ![Editor in midnight (dark)](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fdesktop-editor-new.png) | ![Paste view in pastel-peach (light)](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fdesktop-paste-pastel-peach-light.png) |
+| ![Public pastes list](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fdesktop-public.png) | ![Settings and theme picker](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fdesktop-settings-themes.png) |
+
+
 
 ## Get Started
 
@@ -61,12 +66,13 @@ go build -o palette ./cmd/palette
 | `PALETTE_ADDR` | `:8080` | Listen address |
 | `PALETTE_DB` | `palette.db` | SQLite database path |
 | `PALETTE_MAX_TEXT` | `5242880` | Max paste size in bytes (5 MB) |
-| `PALETTE_MAX_ITEM` | `26214400` | Max can item size in bytes (25 MB) |
+| `PALETTE_MAX_ITEM` | `26214400` | Max can item / file attachment 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. |
+| `PALETTE_UNLOCK_SECRET` | random per start | HMAC secret for password-unlock cookies. Set a fixed value to keep unlock sessions across restarts or across replicas. |
 
 An `/admin` page exists for runtime settings, protected by a key set at
-install (`PALETTE_ADMIN_KEY` env var) and resettable locally — see
+install (`PALETTE_ADMIN_KEY` env var) and resettable locally. See
 [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.
 
 ## API

docker-compose.yml

@@ -32,10 +32,16 @@ services:
       # Default: 5242880 (5 MiB).
       # PALETTE_MAX_TEXT: "5242880"
 
-      # Max size in bytes of a single can item (file/text inside a can).
+      # Max size in bytes of a single can item (file/text inside a can) or a
+      # paste file attachment.
       # Default: 26214400 (25 MiB).
       # PALETTE_MAX_ITEM: "26214400"
 
+      # Default dark mode for new visitors. Unset = dark on; set to "false",
+      # "0" or "off" to default to light mode. Visitors who toggle dark mode
+      # keep their choice in their browser.
+      # PALETTE_DEFAULT_DARK: "false"
+
       # 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,

internal/api/attachments_test.go

@@ -306,3 +306,64 @@ func TestMultipartPasswordFieldAccepted(t *testing.T) {
 		t.Fatalf("paste should require password, got %d", rec2.Code)
 	}
 }
+
+// #281: /raw/{id} must stream the attachment blob for ALL attachment mimes,
+// not just raster images (the old isImageMime gate left non-image
+// attachments serving an empty body from row.Content).
+func TestRawStreamsNonImageAttachment(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+
+	body := []byte("hello, this is a plain text attachment body")
+	rec, resp := multipartCreate(t, h, "notes.txt", body, nil)
+	if rec.Code != 201 {
+		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
+	}
+	if resp["attachment"] == nil {
+		t.Fatalf("no attachment in response: %v", resp)
+	}
+	id, _ := resp["id"].(string)
+
+	req := httptest.NewRequest("GET", "/raw/"+id, nil)
+	rec2 := httptest.NewRecorder()
+	h.ServeHTTP(rec2, req)
+	if rec2.Code != 200 {
+		t.Fatalf("raw: %d %s", rec2.Code, rec2.Body.String())
+	}
+	if got := rec2.Header().Get("Content-Type"); got != "text/plain; charset=utf-8" {
+		t.Fatalf("Content-Type = %q", got)
+	}
+	if got := rec2.Header().Get("X-Content-Type-Options"); got != "nosniff" {
+		t.Fatalf("nosniff = %q", got)
+	}
+	if !bytes.Equal(rec2.Body.Bytes(), body) {
+		t.Fatalf("raw bytes differ: got %d bytes want %d", rec2.Body.Len(), len(body))
+	}
+}
+
+// #281: active-content attachment types still get forced to text/plain on
+// /raw, same rule as the /f/ serving path (#34).
+func TestRawHtmlAttachmentServesAsPlainText(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+
+	html := []byte("<html><body><script>alert(1)</script></body></html>")
+	rec, resp := multipartCreate(t, h, "page.html", html, nil)
+	if rec.Code != 201 {
+		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
+	}
+	id, _ := resp["id"].(string)
+
+	req := httptest.NewRequest("GET", "/raw/"+id, nil)
+	rec2 := httptest.NewRecorder()
+	h.ServeHTTP(rec2, req)
+	if rec2.Code != 200 {
+		t.Fatalf("raw: %d %s", rec2.Code, rec2.Body.String())
+	}
+	if got := rec2.Header().Get("Content-Type"); got != "text/plain; charset=utf-8" {
+		t.Fatalf("Content-Type = %q", got)
+	}
+	if !bytes.Equal(rec2.Body.Bytes(), html) {
+		t.Fatal("raw bytes differ from upload")
+	}
+}

internal/api/clientip.go

@@ -0,0 +1,27 @@
+// clientIP extracts the client IP for rate-limit keying.
+//
+// Trust boundary (issue #280): the bucket key MUST NOT come from any header a
+// client can influence. The previous rightmost-X-Forwarded-For scheme (#85)
+// assumed Traefik appends the real client IP, but the deployed ingress does
+// not rewrite XFF, so a client rotating its own XFF value got a fresh bucket
+// per request and the limit was unenforceable (pentest H1: 6x201 across 8
+// rotating-XFF creates).
+//
+// The bucket key is the actual peer address (RemoteAddr) only. Behind any
+// reverse proxy this is the proxy's address, so all clients share one bucket
+// per endpoint — coarse, but safe. Client-supplied IP headers
+// (X-Forwarded-For, X-Real-Ip) are never trusted.
+package api
+
+import (
+	"net"
+	"net/http"
+)
+
+func clientIP(r *http.Request) string {
+	host := r.RemoteAddr
+	if h, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
+		host = h
+	}
+	return host
+}

internal/api/cookie_set_test.go

@@ -91,7 +91,15 @@ func TestCreatedBannerViaCookie(t *testing.T) {
 	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)")
+	// #168: the created pill no longer prints the deletion token; the token
+	// still arrives via the one-time cookie flow (re-set on the view response).
+	var got bool
+	for _, c := range rec2.Result().Cookies() {
+		if c.Name == "tok_"+id && c.Value == tok {
+			got = true
+		}
+	}
+	if !got {
+		t.Error("created view did not re-set the deletion token cookie (#143 cookie flow broken)")
 	}
 }

internal/api/issue138_cookie_test.go

@@ -29,7 +29,7 @@ func newTestServer138(t *testing.T) *httptest.ResponseRecorder {
 	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)
+	req := httptest.NewRequest("GET", "/public", nil)
 	rec := httptest.NewRecorder()
 	a.routes().ServeHTTP(rec, req)
 	return rec

internal/api/issue235_type_test.go

@@ -0,0 +1,40 @@
+package api
+
+import "testing"
+
+// #235: Type column. Text pastes show the language, attachment pastes show
+// the file extension (lowercase, no dot).
+func TestDisplayType(t *testing.T) {
+	lang := "python"
+	cases := []struct {
+		lang *string
+		att  string
+		want string
+	}{
+		{nil, "", "text"},
+		{&lang, "", "python"},
+		{&lang, "report.pdf", "pdf"},
+		{nil, "photo.PNG", "png"},
+		{&lang, "archive.tar.gz", "gz"},
+		{&lang, "noext", "python"},     // no extension: fall back to language
+		{&lang, ".hidden", "python"},   // dotfile: no extension
+		{&lang, "dir/name.txt", "txt"}, // path component only
+	}
+	for _, c := range cases {
+		if got := displayType(c.lang, c.att); got != c.want {
+			t.Errorf("displayType(%v, %q) = %q, want %q", c.lang, c.att, got, c.want)
+		}
+	}
+}
+
+func TestAttachmentExtName(t *testing.T) {
+	cases := map[string]string{
+		"a.txt": "txt", "A.PNG": "png", "noext": "", ".hidden": "",
+		"x.": "", "dir/b.md": "md", "": "",
+	}
+	for in, want := range cases {
+		if got := attachmentExtName(in); got != want {
+			t.Errorf("attachmentExtName(%q) = %q, want %q", in, got, want)
+		}
+	}
+}

internal/api/main_test.go

@@ -299,3 +299,27 @@ func TestNotFound(t *testing.T) {
 		t.Fatalf("expected 404, got %d", rec.Code)
 	}
 }
+
+// #173: a missing paste ID on the UI route (/p/{id}, i.e. /{id} HTML view)
+// should render the main UI page with a friendly "Paste ID not found"
+// message, not a bare text 404. Status stays 404.
+func TestPasteViewNotFoundFriendly(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+	req := httptest.NewRequest("GET", "/zzzzzz", nil)
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != http.StatusNotFound {
+		t.Fatalf("expected 404 status, got %d", rec.Code)
+	}
+	body := rec.Body.String()
+	if !strings.Contains(body, "Paste ID not found") {
+		t.Fatalf("expected friendly message in body, got: %.200s", body)
+	}
+	if !strings.Contains(body, "<nav>") {
+		t.Fatalf("expected main UI chrome in body")
+	}
+	if strings.Contains(body, "404 page not found") {
+		t.Fatalf("body still contains bare Go 404 text")
+	}
+}

internal/api/mine_test.go

@@ -58,7 +58,7 @@ func TestMineCreateListDelete(t *testing.T) {
 	a := &apiServer{store: st, cfg: cfg, ui: ui, settings: ss, adminKey: "test-admin-key"}
 	h := a.routes()
 
-	alice := viewerCookieFor(t, h, "/history")
+	alice := viewerCookieFor(t, h, "/public")
 	if alice == "" {
 		t.Fatal("no viewer cookie issued")
 	}
@@ -89,7 +89,7 @@ func TestMineCreateListDelete(t *testing.T) {
 	}
 
 	// a different browser's cookie does NOT see it
-	bob := viewerCookieFor(t, h, "/history")
+	bob := viewerCookieFor(t, h, "/public")
 	rec = doReq(t, h, "GET", "/api/mine", bob, "")
 	json.Unmarshal(rec.Body.Bytes(), &list)
 	if list.Total != 0 {

internal/api/ratelimit.go

@@ -3,7 +3,6 @@ package api
 import (
 	"net/http"
 	"strconv"
-	"strings"
 	"sync"
 	"time"
 )
@@ -48,35 +47,6 @@ func (l *limiter) allow(key string, rate, burst float64) bool {
 	return true
 }
 
-// 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]
-	}
-	return host
-}
-
 var globalLimiter = newLimiter()
 
 // globalSettingsFn is set at startup; tests can point it at fixed settings.

internal/api/ratelimit_test.go

@@ -166,8 +166,11 @@ func TestHighlightCode(t *testing.T) {
 	if plain != "<b>x</b>" {
 		t.Fatalf("plain escaping wrong: %q", plain)
 	}
-	// line count preserved (gutter alignment)
-	if got := len(splitLines(lang.HighlightCode("a\nb\nc", "go"))); got != 3 {
+	// #205: newline join preserved as the delimiter paste-lines.js splits on;
+	// per-line segments survive and the client joins with '' so no newline
+	// text node reaches the rendered DOM.
+	hl := lang.HighlightCode("a\nb\nc", "go")
+	if got := len(splitLines(hl)); got != 3 {
 		t.Fatalf("want 3 lines, got %d", got)
 	}
 }

internal/api/ratelimit_xff_test.go

@@ -1,85 +1,50 @@
 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"
+	"fmt"
 	"net/http/httptest"
 	"testing"
 )
 
-func TestClientIPTakesRightmostXFF(t *testing.T) {
-	r := httptest.NewRequest("POST", "/", nil)
-	r.RemoteAddr = "10.42.0.7:51000" // trusted Traefik pod
+func TestClientIPUsesRemoteAddrNotXFF(t *testing.T) {
+	r := httptest.NewRequest("POST", "/api/pastes", nil)
+	r.RemoteAddr = "203.0.113.7:4432"
 	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)
+	if got := clientIP(r); got != "203.0.113.7" {
+		t.Fatalf("clientIP = %q, want peer 203.0.113.7", 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)
+// A proxy-controlled header is not honored even when set: #280 revision
+// removed the PALETTE_TRUSTED_IP_HEADER mechanism per owner decision, so the
+// bucket key is the peer address only.
+func TestClientIPNeverTrustsHeaders(t *testing.T) {
+	r := httptest.NewRequest("POST", "/api/pastes", nil)
+	r.RemoteAddr = "10.0.1.47:9999"
+	r.Header.Set("CF-Connecting-IP", "198.51.100.9")
+	if got := clientIP(r); got != "10.0.1.47" {
+		t.Fatalf("clientIP = %q, want peer 10.0.1.47", 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)
+// Issue #280: rotating X-Forwarded-For must NOT reset the bucket. Pentest
+// repro was 8 creates with rotating XFF -> 6x201.
+func TestRotatingXFFDoesNotResetBucket(t *testing.T) {
+	globalLimiter = newLimiter()
+	s := defaultSettings(Config{}) // burst/limit defaults; header values are ignored anyway
+	var allowed, limited int
+	for i := 0; i < 8; i++ {
+		r := httptest.NewRequest("POST", "/api/pastes", nil)
+		r.RemoteAddr = "198.51.100.1:5000"
+		r.Header.Set("X-Forwarded-For", fmt.Sprintf("9.9.9.%d", i))
+		if rateLimitCreate(r, s) {
+			allowed++
+		} else {
+			limited++
 		}
 	}
-	// 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)
-		}
+	if float64(allowed) != s.RateLimitBurst || limited != 8-int(s.RateLimitBurst) {
+		t.Fatalf("rotating XFF: allowed=%d limited=%d, want allowed=%v (burst), limited=%d", allowed, limited, s.RateLimitBurst, 8-int(s.RateLimitBurst))
 	}
 }

internal/api/routes_rename_test.go

@@ -0,0 +1,52 @@
+package api
+
+// #256: renamed page routes; old URLs redirect.
+import (
+	"palette/internal/store"
+	"palette/internal/web"
+
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestRenamedPageRoutes(t *testing.T) {
+	globalLimiter = newLimiter() // fresh rate-limit buckets
+	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"}
+	h := a.routes()
+
+	// new routes render pages
+	for _, path := range []string{"/public", "/saved"} {
+		req := httptest.NewRequest("GET", path, nil)
+		rec := httptest.NewRecorder()
+		h.ServeHTTP(rec, req)
+		if rec.Code != http.StatusOK {
+			t.Fatalf("GET %s: %d, want 200", path, rec.Code)
+		}
+	}
+
+	// old routes redirect
+	for _, tc := range [][2]string{{"/history", "/public"}, {"/mine", "/saved"}, {"/", "/public"}} {
+		req := httptest.NewRequest("GET", tc[0], nil)
+		rec := httptest.NewRecorder()
+		h.ServeHTTP(rec, req)
+		if rec.Code != http.StatusMovedPermanently && rec.Code != http.StatusFound {
+			t.Fatalf("GET %s: %d, want redirect", tc[0], rec.Code)
+		}
+		if loc := rec.Header().Get("Location"); loc != tc[1] {
+			t.Fatalf("GET %s redirects to %s, want %s", tc[0], loc, tc[1])
+		}
+	}
+}

internal/api/server.go

@@ -118,19 +118,25 @@ func (a *apiServer) routes() http.Handler {
 	r.Get("/raw/{id}", a.handleRaw)
 
 	// web pages
-	r.Get("/", http.RedirectHandler("/history", http.StatusFound).ServeHTTP)
+	r.Get("/", http.RedirectHandler("/public", http.StatusFound).ServeHTTP)
 	r.Get("/new", a.ui.Handlers().HandleNewPage)
-	r.Get("/history", a.ui.Handlers().HandleHistoryPage)
+	r.Get("/public", a.ui.Handlers().HandleHistoryPage)
+	r.Get("/saved", a.ui.Handlers().HandleMinePage)
 	r.Get("/settings", a.ui.Handlers().HandleSettingsPage)
-	r.Get("/mine", a.ui.Handlers().HandleMinePage)
+	// #256: old URLs redirect to the renamed pages
+	r.Get("/history", http.RedirectHandler("/public", http.StatusMovedPermanently).ServeHTTP)
+	r.Get("/mine", http.RedirectHandler("/saved", http.StatusMovedPermanently).ServeHTTP)
 	r.Handle("/static/*", a.ui.StaticHandler())
 	r.Get("/unlock/{id}", a.handlePasteView)
 	r.Post("/unlock/{id}", a.handlePasteView)
 	r.Get("/{id}", a.handlePasteView)
 	r.Post("/{id}", a.handlePasteView)
 
+// #173: missing paste URLs render the main UI with a friendly not-found
+// message instead of a bare JSON 404. Known routes (above) handle real pages;
+// anything else is a nonexistent paste ID or typo.
 r.NotFound(func(w http.ResponseWriter, r *http.Request) {
-		writeErr(w, 404, "not found")
+	a.webHandlers().HandleNotFoundPage(w, r)
 })
 	return r
 }
@@ -312,11 +318,26 @@ func (a *apiServer) handleGetPaste(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, 200, map[string]any{
 		"id": row.ID, "content": row.Content, "content_type": row.ContentType,
 		"language": store.NullStrPtr(row.Language), "title": store.NullStrPtr(row.Title), "created_at": row.CreatedAt,
+		"type":     a.pasteTypeLabel(row),
 		"view_count": row.ViewCount, "visibility": row.Visibility,
 		"reads_remaining": rem,
 	})
 }
 
+// pasteTypeLabel computes the Type value for a single paste (#235): file
+// extension for attachment pastes, else the stored language, else "text".
+func (a *apiServer) pasteTypeLabel(row *store.PasteRow) string {
+	if att, err := a.store.GetAttachmentForPaste(row.ID); err == nil && att != nil {
+		if ext := attachmentExtName(att.Filename); ext != "" {
+			return ext
+		}
+	}
+	if !row.Language.Valid || row.Language.String == "" {
+		return "text"
+	}
+	return row.Language.String
+}
+
 func (a *apiServer) handleDeletePaste(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
 	row, err := a.store.GetPaste(id)
@@ -373,6 +394,33 @@ func (a *apiServer) deletionAuthorized(r *http.Request, row *store.PasteRow) boo
 		row.ViewerID.String != "" && row.ViewerID.String == vid
 }
 
+// displayType returns the Type-column value for a list row (#235): the file
+// extension for attachment pastes, otherwise the detected language (default
+// "text").
+func displayType(lang *string, attFilename string) string {
+	if ext := attachmentExtName(attFilename); ext != "" {
+		return ext
+	}
+	if lang == nil || *lang == "" {
+		return "text"
+	}
+	return *lang
+}
+
+// attachmentExtName returns the lowercase extension (without dot) of a
+// filename, or "" when there is none.
+func attachmentExtName(filename string) string {
+	name := filename
+	if i := strings.LastIndexByte(name, '/'); i >= 0 {
+		name = name[i+1:]
+	}
+	i := strings.LastIndexByte(name, '.')
+	if i <= 0 || i == len(name)-1 {
+		return ""
+	}
+	return strings.ToLower(name[i+1:])
+}
+
 // handleListMine serves /api/mine: pastes created from this browser (#37).
 func (a *apiServer) handleListMine(w http.ResponseWriter, r *http.Request) {
 	vid := currentViewerID(r)
@@ -391,7 +439,7 @@ func (a *apiServer) handleListMine(w http.ResponseWriter, r *http.Request) {
 	for _, row := range rows {
 		lang, title := store.NullStrPtr(row.Language), store.NullStrPtr(row.Title)
 		items = append(items, map[string]any{
-			"id": row.ID, "title": title, "language": lang,
+			"id": row.ID, "title": title, "language": lang, "type": displayType(lang, row.AttFilename),
 			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
 			"custom_slug": store.NullStrPtr(row.CustomSlug), "visibility": row.Visibility,
 			"is_can": row.IsCan,
@@ -412,7 +460,7 @@ func (a *apiServer) handleListPublic(w http.ResponseWriter, r *http.Request) {
 	for _, row := range rows {
 		lang, title := store.NullStrPtr(row.Language), store.NullStrPtr(row.Title)
 		items = append(items, map[string]any{
-			"id": row.ID, "title": title, "language": lang,
+			"id": row.ID, "title": title, "language": lang, "type": displayType(lang, row.AttFilename),
 			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
 			"custom_slug": store.NullStrPtr(row.CustomSlug),
 			"is_can":      row.IsCan,
@@ -448,6 +496,25 @@ func (a *apiServer) handleRaw(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "not found", 404)
 		return
 	}
+	// #221: raw view of a paste backed by an attachment serves the stored
+	// blob bytes with the sniffed mime, not the (empty) text content — for
+	// ALL attachment mimes (#281); /raw/{id} is the raw fetch for the file
+	// too. serveContentType still forces active-content types (html, svg,
+	// xml) to text/plain per the #34 rule below.
+	if att, err := a.store.GetAttachmentForPaste(row.ID); err == nil && att != nil {
+		blobs := a.store.Blobs()
+		if blobs != nil {
+			if blob, err := blobs.Get(row.ID + "/" + att.SHA256); err == nil {
+				defer blob.Close()
+				a.store.IncrementViews(row.ID, "", 0) // raw views always count (#49/#95)
+				w.Header().Set("Content-Type", serveContentType(att.Mime))
+				w.Header().Set("X-Content-Type-Options", "nosniff")
+				w.Header().Set("Content-Length", fmt.Sprintf("%d", att.Size))
+				http.ServeContent(w, r, "", time.Unix(att.CreatedAt, 0), blob)
+				return
+			}
+		}
+	}
 	// #34: content_type is attacker-controlled via the create API. Serving it
 	// verbatim let a paste be stored with text/html (or image/svg+xml) and
 	// render as active content on this origin when fetched from /raw —

internal/lang/highlight.go

@@ -146,5 +146,9 @@ func HighlightCode(content, langID string) string {
 	for i, line := range lines {
 		out[i] = highlightLine(line, h, langID)
 	}
+	// Note: lines are joined with "\n" on purpose — paste-lines.js splits on
+	// the newline to build its per-line .codeline blocks, then joins those
+	// with "" and strips whitespace-only text nodes (#205), so no newline
+	// text node ever reaches the rendered DOM.
 	return strings.Join(out, "\n")
 }

internal/store/attachment.go

@@ -26,7 +26,10 @@ type Attachment struct {
 	SizeHuman string `json:"-"` // template-only: human-readable size
 }
 
-const MaxFilenameLen = 255
+// MaxFilenameLen caps stored attachment filenames (bytes) to bound DB
+// rows and Content-Disposition echoes. 128 keeps names readable while
+// stopping filename-bloat abuse; longer names truncate.
+const MaxFilenameLen = 128
 
 // ErrFileTooLarge is returned when an attachment exceeds the per-file cap.
 var ErrFileTooLarge = errors.New("file too large")

internal/store/blob_test.go

@@ -105,4 +105,9 @@ func TestSanitizeFilename(t *testing.T) {
 	if got := SanitizeFilename(long); len(got) != MaxFilenameLen {
 		t.Errorf("long name len = %d want %d", len(got), MaxFilenameLen)
 	}
+	// issue #248: a 250-char multipart filename must truncate to the cap
+	repro := strings.Repeat("b", 246) + ".txt"
+	if got := SanitizeFilename(repro); len(got) != MaxFilenameLen {
+		t.Errorf("repro name len = %d want %d", len(got), MaxFilenameLen)
+	}
 }

internal/store/customslug.go

@@ -13,6 +13,7 @@ var reservedSlugs = map[string]bool{
 	"api": true, "raw": true, "can": true, "cans": true, "public": true,
 	"history": true, "static": true, "assets": true, "favicon.ico": true,
 	"new": true, "login": true, "logout": true, "admin": true, "settings": true,
+	"mine": true, "saved": true, "unlock": true, "guess": true, "f": true,
 }
 
 var ErrInvalidSlug = errors.New("custom slug must be 1-64 chars: letters, digits, dash, underscore; must start with letter or digit")

internal/store/store.go

@@ -63,6 +63,7 @@ type PasteRow struct {
 	DeletionToken sql.NullString
 	ViewerID      sql.NullString
 	IsCan         bool // set on list rows that are cans (#4)
+	AttFilename   string // attachment filename when the paste is a file paste (#235); empty otherwise
 }
 
 type CanRow struct {
@@ -304,11 +305,12 @@ 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), 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 > ?)
+	rows, err := s.db.Query(`SELECT p.id, p.custom_slug, p.content_type, p.language, p.title, p.visibility, p.created_at, p.view_count, LENGTH(p.content), 0, COALESCE(a.filename, '')
+		FROM pastes p
+		LEFT JOIN attachments a ON a.paste_id = p.id
+		WHERE p.visibility='public' AND p.deleted_at IS NULL AND p.can_id IS NULL AND p.password_hash IS NULL AND (p.expires_at IS NULL OR p.expires_at > ?)
 		UNION ALL
-		SELECT id, NULL, 'text/plain', NULL, title, visibility, created_at, 0, 0, 1
+		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)
@@ -321,7 +323,7 @@ func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
 		var r PasteRow
 		var cs, lang, title sql.NullString
 		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 {
+		if err := rows.Scan(&r.ID, &cs, &r.ContentType, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan, &r.AttFilename); err != nil {
 			return nil, 0, err
 		}
 		r.CustomSlug = cs
@@ -339,11 +341,12 @@ func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
 
 // 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), 0
-		FROM pastes
-		WHERE viewer_id = ? AND deleted_at IS NULL AND can_id IS NULL AND (expires_at IS NULL OR expires_at > ?)
+	rows, err := s.db.Query(`SELECT p.id, p.custom_slug, p.language, p.title, p.visibility, p.created_at, p.view_count, LENGTH(p.content), 0, COALESCE(a.filename, '')
+		FROM pastes p
+		LEFT JOIN attachments a ON a.paste_id = p.id
+		WHERE p.viewer_id = ? AND p.deleted_at IS NULL AND p.can_id IS NULL AND (p.expires_at IS NULL OR p.expires_at > ?)
 		UNION ALL
-		SELECT id, NULL, NULL, title, visibility, created_at, 0, 0, 1
+		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)
@@ -356,7 +359,7 @@ func (s *Store) ListMine(viewerID string, limit, offset int) ([]PasteRow, int, e
 		var r PasteRow
 		var cs, lang, title sql.NullString
 		var isCan int
-		if err := rows.Scan(&r.ID, &cs, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan); err != nil {
+		if err := rows.Scan(&r.ID, &cs, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan, &r.AttFilename); err != nil {
 			return nil, 0, err
 		}
 		r.CustomSlug, r.Language, r.Title = cs, lang, title

internal/web/csp_noinline_test.go

@@ -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)
+			}
+		}
+	}
+}

internal/web/securityheaders_test.go

@@ -16,7 +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'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; 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)
 	}

internal/web/static/admin.js

@@ -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.
+})();

internal/web/static/app.css

@@ -150,8 +150,7 @@ body {
 }
 .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-title: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;
 }
@@ -198,11 +197,17 @@ body {
   border: 1px solid var(--border); border-radius: var(--radius); padding: 5px 8px; background: var(--bg);
   color: var(--fg); font: inherit; font-size: 21.6px; width: 130px;
 }
-.created-banner {
-  display: none; padding: 10px 16px; font-size: 22.4px; background: var(--surface-2);
-  border-bottom: 1px solid var(--border); word-break: break-all;
+/* #168: compact side notification pill (paste-created feedback) */
+.created-pill {
+  position: fixed; right: 12px; bottom: 12px; z-index: 200;
+  background: var(--surface-2); color: var(--ok); border: 1px solid var(--ok);
+  border-radius: var(--radius-sm); padding: 2px 8px; font-size: 11.5px;
+  opacity: 0; pointer-events: none; transform: translateY(6px);
+  transition: opacity .25s ease, transform .25s ease;
+  box-shadow: 0 4px 16px rgba(0,0,0,.25);
 }
-.created-banner a { color: var(--accent); }
+.created-pill.show { opacity: 1; transform: translateY(0); }
+@media (max-width: 640px) { .created-pill { right: 12px; bottom: 12px; } }
 
 /* paste view */
 .meta-bar { display: flex; align-items: center; gap: 12px; padding: 12px 18px; flex-wrap: wrap; }
@@ -211,14 +216,17 @@ body {
 .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; 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; }
+/* #222: .float already draws the border + radius and clips corners; the pill's own
+   tighter border curve was getting clipped thin at the corners. Let .float be the
+   only border/paint surface for the details pill (collapsed and expanded). */
+.stats-pill { border: 0; border-radius: 0; overflow: hidden; }
+.stats-head { display: flex; align-items: center; gap: 16px; width: 100%; background: none; border: 0; border-bottom: 1px solid var(--border); 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); }
 .stats-chev { width: 18px; height: 18px; flex: none; transition: transform 0.15s ease; }
 .stats-pill.open .stats-chev { transform: rotate(180deg); }
 .stats-summary { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; letter-spacing: .01em; }
 @media (max-width: 640px) { .stats-summary { white-space: normal; word-break: break-word; } }
-.stats-body { border-top: 1px solid var(--border); }
+.stats-body { /* #169: divider under the dropdown title is the head's own persistent border-bottom */ }
 .stats-grid { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; padding: 12px 16px; font-size: 20.7px; }
 .stats-k { color: var(--muted-fg); }
 .stats-v { color: var(--fg); word-break: break-all; }
@@ -248,6 +256,12 @@ body {
 .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; }
+
+/* #161: more breathing room between settings sections */
+/* #207 r2: owner wants the toggle left aligned (revert #197 centering) */
+#settings-dark-toggle { margin-bottom: 20px; }
+.settings-body h3 { margin-top: 28px; }
+.settings-body .theme-grid { margin-bottom: 8px; }
 .theme-card {
   display: flex; flex-direction: column; gap: 10px; align-items: flex-start;
   padding: 14px 16px; min-width: 180px;
@@ -261,10 +275,18 @@ body {
 .theme-name { font-weight: 600; }
 .iconbtn:hover { color: var(--fg); border-color: var(--muted); }
 /* #130: line wrap toggle, accent when active like other toggles */
+/* #166: wrap toggle must show its state: neutral when off, accent when on.
+   The .btn base is accent filled, which made on and off look identical. */
+.btn-icon.wrap-toggle { background: var(--surface-2); color: var(--muted-fg); font-size: 21.6px; font-weight: inherit; border: 1px solid var(--border); }
+.btn-icon.wrap-toggle:hover { color: var(--fg); border-color: var(--muted-fg); filter: none; }
 .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; }
+/* #167: overflow:hidden zeroes the flex auto-minimum, so the codebody must
+   be told to fill the space left of the gutter or it collapses and the
+   gutter (flex-shrink:0) consumes the whole row */
+html[data-wrap] .code .codebody { flex: 1 1 auto; min-width: 0; }
 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; }
@@ -277,12 +299,33 @@ html[data-wrap] .float { overflow-x: hidden; }
 .code-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
 .code {
   font-family: var(--font-mono); font-size: var(--code-fs); line-height: var(--code-lh);
-  padding: 14px 0; display: flex; overflow-x: auto;
+  padding: 14px 0; display: flex; overflow-x: hidden;
 }
+/* #261: horizontal scroll must live on the codebody, not the .code flex
+   container — a container-level scroll takes the gutter with it when the
+   user scrolls long lines. The gutter sits OUTSIDE the scroll container and
+   stays visible; the codebody shrinks to the remaining space and scrolls
+   (min-width: 0 lets it shrink below its content width inside the flex row). */
+.code .codebody { flex: 1 1 auto; min-width: 0; overflow-x: auto; }
+/* #167: the gutter must not drive the flex layout — its content width
+   (row count × number width) shrinks the code column, which re-wraps lines,
+   which grows the gutter: a feedback loop. Pin the gutter with a fixed
+   basis, take its width out of the negotiation, and let the codebody take
+   the rest. */
+.code .gutter { flex: 0 0 auto; width: 3ch; min-width: 3ch; overflow: visible; }
 .code .gutter { flex-shrink: 0; }
 /* gutter/code share line metrics; the editor gutter keeps its own padding (#50) */
 .code .gutter { padding-top: 0; padding-bottom: 0; }
-.codebody { padding: 0 18px; white-space: pre; }
+.codebody { padding: 0 18px; white-space: pre; overflow-x: auto; }
+/* #167: each logical line is its own block so offsetTop identifies its first visual row */
+.codeline { display: block; }
+/* #167: gutter number spans must stack one per visual row (wrap on).
+   #274: the /new editor gutter uses the same .gutline blocks when its own
+   wrap toggle is on, so scope the rule to any gutter, not just .code. */
+.code .gutter .gutline, .editor-wrap .gutter .gutline { display: block; }
+/* #194: codeline blocks are adjacent (no '\n' text between them), so an
+   empty block (blank source line) needs its own line box to stay one row */
+.codeline:empty::before { content: "\200B"; }
 /* syntax highlight tokens (#1) */
 .tok-kw { color: #c792ea; }
 .tok-str { color: #a5e075; }
@@ -311,10 +354,15 @@ 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); }
+/* #292: highlight the paste NAME uniformly on row hover, titled or not */
+tr.row:hover td .paste-name { color: var(--accent); }
 td a.slug { font-family: var(--font-mono); font-size: 21.6px; color: var(--fg); text-decoration: none; }
+td a.url-link { font-family: inherit; font-size: inherit; color: inherit; text-decoration: none; }
+td a.url-link:hover { color: var(--accent); }
 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); }
+td a.paste-name { color: var(--fg); text-decoration: none; font-family: inherit; font-size: inherit; }
 .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; }
@@ -336,6 +384,9 @@ td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-fami
 }
 .inner h1 { font-size: 29.2px; font-weight: 600; margin-bottom: 6px; }
 .inner .sub { font-size: 22.4px; color: var(--muted-fg); margin-bottom: 20px; }
+/* #173: missing paste message box */
+.notfound-err { color: var(--err); }
+.notfound-card .btn { display: block; margin-top: 10px; }
 .pwinput {
   width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius);
   background: var(--bg); color: var(--fg); font: inherit; font-size: 23.2px; outline: none; text-align: center;
@@ -375,15 +426,15 @@ td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-fami
 }
 .seg input, .toggle input { accent-color: var(--accent); width: 16px; height: 16px; margin: 0; }
 
-/* toast (#19) */
+/* toast (#19, #168): small pill anchored to the corner, out of content flow */
 .toast {
-  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%) translateY(8px);
+  position: fixed; right: 16px; bottom: 16px;
   background: var(--surface-2); color: var(--fg); border: 1px solid var(--border);
-  border-radius: var(--radius-sm); padding: 6px 18px; font-size: 20.7px;
+  border-radius: var(--radius-sm); padding: 6px 12px; font-size: 13px;
   opacity: 0; pointer-events: none; transition: opacity .25s ease, transform .25s ease; z-index: 200;
   box-shadow: 0 4px 16px rgba(0,0,0,.25);
 }
-.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
+.toast.show { opacity: 1; transform: translateY(0); }
 /* status variants (#16) */
 .toast.success { border-color: var(--ok); color: var(--ok); }
 .toast.error { border-color: var(--err); color: var(--err); }
@@ -397,7 +448,42 @@ td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-fami
 
 /* protection section rhythm (#20) */
 .protect { display: flex; flex-direction: column; gap: 2px; }
-.protect .pw-row { padding: 2px 8px 4px; }
+.protect .pw-row:not(.submenu) { padding: 2px 8px 4px; }
+
+/* submenu number boxes (#157): styled number inputs + unit selects,
+   padded + indented to line up with parent option labels */
+.submenu {
+  /* #240: indent the box under the parent option LABEL text (8px row padding
+     + 16px control + 8px gap = 32px), and match the row control padding rhythm */
+  margin: 4px 0 4px 32px;
+  padding: 6px 10px;
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+}
+.exp-group { display: flex; align-items: center; gap: 8px; }
+.num-input {
+  width: 72px;
+  border: 1px solid var(--border); border-radius: var(--radius);
+  background: var(--surface-2); color: var(--fg);
+  font: inherit; font-size: 21.6px; padding: 6px 10px; outline: none;
+  -moz-appearance: textfield; appearance: textfield;
+}
+.num-input::-webkit-outer-spin-button,
+.num-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
+.num-input:focus { border-color: var(--accent); }
+.unit-select {
+  border: 1px solid var(--border); border-radius: var(--radius);
+  background-color: var(--surface-2); color: var(--muted-fg);
+  font: inherit; font-size: 21.6px; padding: 6px 28px 6px 10px;
+  cursor: pointer; outline: none;
+  appearance: none; -webkit-appearance: none;
+  background-image: var(--chevron);
+  background-repeat: no-repeat; background-position: right 10px center;
+}
+.unit-select:focus { border-color: var(--accent); }
+.readable-group { gap: 8px; }
+.readable-label { font-size: 19px; color: var(--muted-fg); white-space: nowrap; }
 .pw-field {
   display: flex; align-items: center; gap: 2px; width: 100%;
   border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg);
@@ -447,7 +533,7 @@ td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-fami
 /* 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 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 a.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); }
 
@@ -455,12 +541,11 @@ td .id-link:hover { color: var(--accent); }
 th.sortable { cursor: pointer; user-select: none; }
 th.sortable:hover { color: var(--fg); }
 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; }
+/* #209: arrow sits RIGHT of the label, vertically centered, and absolutely
+   positioned so it never shifts the label text; label aligns with column contents. */
 th.sortable .sort-ind {
-  position: absolute; left: 8px; top: 50%; transform: translateY(-50%);
-  display: inline-block; width: 0; height: 0;
+  /* #209 r2: inline right after the label text with a fixed gap, not pinned to the column edge */
+  display: inline-block; width: 0; height: 0; margin-left: 6px; vertical-align: middle;
   border-left: 5px solid transparent; border-right: 5px solid transparent;
 }
 th.sorted.asc .sort-ind { border-bottom: 6px solid var(--accent); }
@@ -508,6 +593,20 @@ a.admin-link:hover { color: var(--fg); text-decoration: underline; }
   border-color: var(--ok);
 }
 
+/* #260: static-width success feedback. Label and checkmark stack in one
+   grid cell, so the button is always as wide as the wider of the two and
+   never shifts on click. Feedback is a pure .ok class toggle. */
+.swapbtn {
+  display: inline-grid;
+}
+.swapbtn > * {
+  grid-area: 1 / 1;
+  justify-self: center;
+}
+.swapbtn .swap-check { visibility: hidden; }
+.swapbtn.ok .swap-check { visibility: visible; }
+.swapbtn.ok .swap-label { visibility: hidden; }
+
 /* headings: unified treatment (mirrors .side-section h3) */
 .settings-head h1, .paste-title-bar h1, .head-row h1, .inner h1 {
   letter-spacing: -0.01em;
@@ -577,9 +676,12 @@ a.admin-link:hover { color: var(--fg); text-decoration: underline; }
   .stats-head { font-size: 13px; }
   .stats-grid { font-size: 13px; padding: 10px 12px; }
   .code { font-size: 13px; }
+  /* #167: gutter and code must share one line box at mobile width too — a
+     taller gutter font stacks its rows taller than the code rows and every
+     number drifts off its line start */
+  .code .gutter { font-size: 13px; }
   .codebody { padding: 0 12px; }
   .footnote { font-size: 12px; padding: 8px 12px; gap: 10px; }
-  .created-banner { font-size: 13px; }
   .iconbtn { font-size: 13px; padding: 6px 10px; }
 
   /* unlock card */
@@ -600,6 +702,13 @@ a.admin-link:hover { color: var(--fg); text-decoration: underline; }
 .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); }
+/* #169: divider between the dropdown title and body must be persistent
+   (not hover dependent) and extend the full width of the card left and right */
+.can-item-body[open] summary {
+  border-bottom: 1px solid var(--border);
+  margin: 0 -14px 8px;
+  padding: 0 14px 8px;
+}
 .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; }
@@ -706,6 +815,19 @@ button[type="submit"]:focus-visible,
   background: var(--surface-2);
 }
 .dropzone.dragover { border-width: 2px; }
+/* #171: uploaded-file preview replaces the editor area; image fitted inside */
+.file-preview {
+  flex: 1;
+  min-width: 0;
+  min-height: 0;
+  max-width: 100%;
+  max-height: 100%;
+  object-fit: contain;
+  border-radius: 8px;
+}
+.editor-wrap.previewing .editor,
+.editor-wrap.previewing .gutter { display: none; }
+
 .file-chip {
   display: flex; align-items: center; gap: 10px;
   border: 1px solid var(--border); border-radius: var(--radius);
@@ -719,13 +841,106 @@ button[type="submit"]:focus-visible,
   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 {
+.attachment-bar { display: flex; flex-direction: column; gap: 10px; padding: 12px; }
+/* #221: the link pill under an image preview stays a small inline chip,
+   left-aligned under the image, not stretched above it. */
+.attachment-bar .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;
+  padding: 6px 14px; text-decoration: none; color: var(--fg);
+  background: var(--surface-2); font-size: 19px;
 }
-.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); }
+.attachment-bar .attachment-chip:hover { border-color: var(--accent); }
+.attachment-bar .attachment-chip .attachment-name {
+  min-width: 0;
+  flex: 1;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+/* #232: long filenames are truncated but the pill stays a reasonable
+   width; on narrow viewports it shrinks to the container instead of
+   overflowing the card. */
+.attachment-bar .attachment-chip {
+  max-width: 100%;
+}
+.attachment-bar .attachment-chip .attachment-name:hover {
+  white-space: normal;
+  overflow-wrap: anywhere;
+}
+/* #221: images scale to fit the viewer box, aspect ratio preserved. */
+.attachment-preview {
+  max-width: 100%;
+  align-self: flex-start;
+  /* #229: no inner border/radius of its own; the .float wrapper already
+     frames the pill (inner borders get corner-clipped by overflow:hidden).
+     Padding on .attachment-bar gives the image breathing room from the
+     pill border. */
+  border: 0;
+  border-radius: 0;
+  background: var(--surface-2);
+  overflow: hidden;
+}
+.attachment-preview img {
+  display: block;
+  max-width: 100%;
+  max-height: 70vh;
+  width: auto;
+  height: auto;
+  object-fit: contain;
+}
+
+/* #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: 90px; } .col-d2 { width: 150px; } .col-e { width: 150px; }
+.col-f { width: 100px; } .col-g { width: 120px; }
+/* #255: history's URL column had its own narrow width (col-f doubles as
+   /mine's ID column); give it a dedicated class. */
+.col-url { width: 230px; }
+/* #210: /mine rows render a delete button cell that had no declared column,
+   so under table-layout:fixed it overlapped the ID column. */
+.col-del { width: 64px; }
+.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; }
+/* #167: gutter rows for wrapped paste view — one row per visual code line */
+.gutline { display: block; }
+
+/* #267: jump to top/bottom pills for long pastes and the editor.
+   Hidden unless JS (jump.js) detects content more than 2x the viewport. */
+.jumpnav {
+  position: fixed;
+  right: 18px;
+  bottom: 18px;
+  z-index: 50;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+.jumpnav.hidden { display: none; }
+.jump-btn { box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25); }
+
+/* #273: theme-aware scrollbars. Standard properties first (Firefox, and
+   Chromium >= 121 honors scrollbar-color), then ::-webkit rules for finer
+   Chromium styling. Colors come from CSS vars so they track the preset. */
+* {
+  scrollbar-width: thin;
+  scrollbar-color: var(--border) transparent;
+}
+::-webkit-scrollbar { width: 10px; height: 10px; }
+::-webkit-scrollbar-track { background: transparent; }
+::-webkit-scrollbar-thumb {
+  background: var(--border);
+  border-radius: 5px;
+}
+::-webkit-scrollbar-thumb:hover { background: var(--muted-fg); }
+::-webkit-scrollbar-corner { background: transparent; }

internal/web/static/favicon.svg

@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
+  <rect width="32" height="32" rx="7" fill="#7B5FC0"/>
+  <g fill="none" stroke="#ffffff" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+    <path d="M16 7a9 9 0 1 0 0 18c1.4 0 2-1 2-2s-.7-2.2-.7-3c0-1.1.9-2 2-2h3.2A2.5 2.5 0 0 0 25 15.5 9 9 0 0 0 16 7z"/>
+    <circle cx="11.5" cy="14.5" r="1.6" fill="#ffffff" stroke="none"/>
+    <circle cx="16" cy="11.5" r="1.6" fill="#ffffff" stroke="none"/>
+    <circle cx="20.8" cy="13.8" r="1.6" fill="#ffffff" stroke="none"/>
+  </g>
+</svg>

internal/web/static/foot.js

@@ -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();
+})();

internal/web/static/history.js

@@ -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="/${t.esc(it.id)}"><td>` +
+    (it.title
+      ? `<a class="paste-name" href="/${t.esc(it.id)}">${t.esc(it.title)}</a>${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.type || 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 class="dim"><a class="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

internal/web/static/jump.js

@@ -0,0 +1,51 @@
+/* #267: jump to top / bottom controls for long content.
+   Paste view scrolls the window; the /new editor scrolls its textarea.
+   The active scroller is chosen via data-jump-scroll on the script tag. */
+(function () {
+  var nav = document.getElementById('jumpnav');
+  if (!nav) return;
+  var scroller = window;
+  var sel = nav.dataset.jumpScroll;
+  if (sel) scroller = document.querySelector(sel);
+
+  function el() {
+    return scroller === window ? document.scrollingElement : scroller;
+  }
+  function isLarge() {
+    var e = el();
+    if (!e) return false;
+    var visible = scroller === window ? window.innerHeight : e.clientHeight;
+    return e.scrollHeight > visible * 2;
+  }
+  function refresh() {
+    nav.classList.toggle('hidden', !isLarge());
+  }
+  function jump(toTop) {
+    var e = el();
+    if (!e) return;
+    if (scroller === window) {
+      window.scrollTo({ top: toTop ? 0 : e.scrollHeight });
+    } else {
+      e.scrollTop = toTop ? 0 : e.scrollHeight;
+    }
+  }
+  nav.addEventListener('click', function (ev) {
+    var b = ev.target.closest('[data-jump]');
+    if (!b) return;
+    ev.preventDefault();
+    jump(b.dataset.jump === 'top');
+  });
+  window.addEventListener('resize', refresh);
+  if (scroller !== window && scroller) scroller.addEventListener('input', refresh);
+  refresh();
+  /* #282: the first evaluation can run before the layout settles (media
+     queries, web fonts, async highlighting) and under-measure the content,
+     leaving the nav hidden on long pages. Re-check once a real layout exists
+     and after load; the ResizeObserver also catches late content growth. */
+  requestAnimationFrame(function () { requestAnimationFrame(refresh); });
+  window.addEventListener('load', refresh);
+  window.setTimeout(refresh, 300);
+  if (window.ResizeObserver && scroller === window && document.body) {
+    new ResizeObserver(refresh).observe(document.body);
+  }
+})();

internal/web/static/mine.js

@@ -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="/${t.esc(it.id)}"><td>` +
+    (it.title
+      ? `<a class="paste-name" href="/${t.esc(it.id)}">${t.esc(it.title)}</a>${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.type || it.language || 'text')}</span></td>` +
+    `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
+    (it.custom_slug ? `<td class="dim"><a class="url-link" href="/${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();

internal/web/static/new.js

@@ -0,0 +1,487 @@
+// #139: editor page logic (gutter, expiry, burn, attachments, create).
+const $ = id => document.getElementById(id);
+const content = $('content'), gutter = $('gutter');
+
+// #274: with wrap on, a logical line occupies several VISUAL rows in the
+// textarea, so one number per logical line drifts off its text (same bug the
+// paste view fixed in #167). A textarea can't be split into spans, so the
+// wrapped row count per logical line is measured with a hidden mirror div
+// that shares the editor's font, line metrics and wrapping rules, and the
+// gutter renders one .gutline block per visual row with the number on the
+// FIRST row of its logical line (fillers elsewhere).
+let mirror = null;
+function measureRows(lines) {
+  if (!mirror) {
+    mirror = document.createElement('div');
+    mirror.style.position = 'absolute';
+    mirror.style.visibility = 'hidden';
+    mirror.style.top = '0';
+    mirror.style.left = '-9999px';
+    document.body.appendChild(mirror);
+  }
+  const cs = getComputedStyle(content);
+  mirror.style.font = cs.font;
+  mirror.style.lineHeight = cs.lineHeight;
+  mirror.style.whiteSpace = 'pre-wrap';
+  mirror.style.overflowWrap = 'anywhere';
+  mirror.style.wordBreak = 'break-all';
+  mirror.style.width = (content.clientWidth - parseFloat(cs.paddingLeft) - parseFloat(cs.paddingRight)) + 'px';
+  const lh = parseFloat(cs.lineHeight) || 1;
+  const starts = [];
+  let total = 0;
+  const n = Math.max(lines.length, 1);
+  for (let i = 0; i < n; i++) {
+    // A trailing newline yields an empty last line: it still occupies one row.
+    mirror.textContent = lines[i] + '\n';
+    let rows = Math.max(1, Math.round(mirror.getBoundingClientRect().height / lh));
+    starts.push(total);
+    total += rows;
+  }
+  return { starts, total };
+}
+
+function updateGutter() {
+  const lines = content.value.split('\n');
+  const n = Math.max(lines.length, 1);
+  if (!document.documentElement.hasAttribute('data-wrap')) {
+    let s = '';
+    for (let i = 1; i <= n; i++) s += i + '\n';
+    gutter.textContent = s.slice(0, -1);
+    return;
+  }
+  const { starts, total } = measureRows(lines);
+  gutter.textContent = '';
+  const frag = document.createDocumentFragment();
+  const spans = [];
+  for (let r = 0; r < total; r++) {
+    const c = document.createElement('span');
+    c.className = 'gutline';
+    c.textContent = '\u00a0';
+    spans.push(c);
+    frag.appendChild(c);
+  }
+  gutter.appendChild(frag);
+  for (let j = 0; j < starts.length; j++) spans[starts[j]].textContent = String(j + 1);
+}
+content.addEventListener('input', updateGutter);
+// #274: the wrap toggle and width changes re-wrap the textarea; re-measure.
+new MutationObserver(updateGutter).observe(document.documentElement, { attributes: true, attributeFilter: ['data-wrap'] });
+window.addEventListener('resize', updateGutter);
+// #259: the editor scrolls itself; keep the gutter's numbers in step with it.
+content.addEventListener('scroll', () => { gutter.scrollTop = content.scrollTop; });
+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() {
+  // #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);
+  // #260 attempt 2: .swapbtn markup — label and checkmark share one grid
+  // cell, so the button width is static and feedback is a class toggle.
+  showResult('<a href="' + url + '">' + url + '</a> <button class="btn btn-icon swapbtn" id="result-copy" title="Copy URL" type="button"><span class="swap-label">Copy</span><span class="swap-check">✓</span></button>', 'ok');
+  $('result').dataset.token = data.deletion_token || '';
+  const copyBtn = document.getElementById('result-copy');
+  copyBtn.addEventListener('click', () => {
+    try {
+      navigator.clipboard.writeText(url);
+      copyBtn.classList.add('ok');               // in-place success feedback (#53)
+      setTimeout(() => copyBtn.classList.remove('ok'), 2000);
+    } catch(e) { toast('Copy failed', 'error'); }
+  });
+  // token carried via sessionStorage, never in the URL (#143)
+  const dest = '/' + data.id + '?created=1';
+  try { sessionStorage.setItem('deletion_token_' + data.id, data.deletion_token || ''); } catch(e) {}
+  // password-protected: unlock now with the password we already have (#26)
+  if ($('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';
+}
+
+// #171: text-file extensions -> language key for title placeholder
+// convention (e.g. Python.py); fallback Text.
+const LANG_BY_EXT = {
+  py: 'python', go: 'go', js: 'javascript', mjs: 'javascript', ts: 'typescript',
+  tsx: 'typescript', rs: 'rust', c: 'c', h: 'c', cpp: 'cpp', cc: 'cpp', hpp: 'cpp',
+  java: 'java', cs: 'csharp', sh: 'bash', bash: 'bash', sql: 'sql', yml: 'yaml',
+  yaml: 'yaml', json: 'json', html: 'html', htm: 'html', css: 'css', xml: 'xml',
+  php: 'php', rb: 'ruby', pl: 'perl', lua: 'lua', toml: 'toml', ini: 'ini',
+  diff: 'diff', md: 'markdown', txt: 'text', log: 'text',
+};
+const TEXT_EXTS = new Set(Object.keys(LANG_BY_EXT));
+
+function extOf(name) {
+  const i = name.lastIndexOf('.');
+  return i >= 0 ? name.slice(i + 1).toLowerCase() : '';
+}
+
+// #171: when a file is attached it takes over the main editing area.
+// Images render fitted into the editor area; text files load their
+// content into the editor. Title auto-fills only if still blank (house
+// rule: never overwrite a typed title).
+const IMAGE_RE = /^image\//;
+let previewURL = null;
+
+// #171: CSP img-src only allows 'self' and data:, so blob: URLs are
+// blocked — read the file as a data: URL via FileReader instead.
+function readFileDataURL(file, cb) {
+  const r = new FileReader();
+  r.onload = () => cb(r.result);
+  r.readAsDataURL(file);
+}
+
+async function showFileInEditor(file) {
+  const wrap = document.querySelector('.editor-wrap');
+  const img = $('file-preview');
+  if (IMAGE_RE.test(file.type)) {
+    readFileDataURL(file, (dataURL) => {
+      previewURL = dataURL;
+      img.src = dataURL;
+      img.alt = file.name;
+      wrap.classList.add('previewing');
+      img.classList.remove('hidden');
+    });
+    return;
+  }
+  wrap.classList.remove('previewing');
+  img.classList.add('hidden');
+  if (!TEXT_EXTS.has(extOf(file.name))) return; // unknown binary: leave editor alone
+  try {
+    const text = await file.text();
+    // #184: the file replaces the main editing area, so the text always
+    // loads over whatever was in the editor (same rule as images, which
+    // hide the editor entirely).
+    content.value = text;
+    updateGutter();
+    guessLang();
+  } catch (e) {}
+}
+
+function clearPreview() {
+  const wrap = document.querySelector('.editor-wrap');
+  const img = $('file-preview');
+  wrap.classList.remove('previewing');
+  img.classList.add('hidden');
+  img.removeAttribute('src');
+  if (previewURL) { URL.revokeObjectURL(previewURL); previewURL = null; }
+}
+
+function setAttachedFile(file) {
+  if (!file) return clearAttachedFile();
+  if (file.size > MAX_FILE_BYTES) {
+    toast('File is too large. The limit is 25 MB.', 'error');
+    return;
+  }
+  attachedFile = file;
+  renderFileChip();
+  setHidden('file-text-note', false);
+  // #233: title auto-fill — the file's own name always wins when the
+  // title is still blank; fallback is date.fileextension (e.g.
+  // 2026-09-10.txt) when the name is missing or unusable. Never
+  // overwrite a typed title.
+  if (!$('title').value.trim()) {
+    const raw = (file.name || '').trim();
+    if (raw) {
+      $('title').value = raw;
+    } else {
+      const d = new Date();
+      const iso = d.getFullYear() + '-' + String(d.getMonth() + 1).padStart(2, '0') + '-' + String(d.getDate()).padStart(2, '0');
+      const ext = extOf(raw || file.name);
+      $('title').value = ext ? iso + '.' + ext : iso;
+    }
+  }
+  showFileInEditor(file);
+}
+
+function clearAttachedFile() {
+  attachedFile = null;
+  $('file-input').value = '';
+  renderFileChip();
+  setHidden('file-text-note', true);
+  clearPreview();
+}
+
+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);
+}
+
+// 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(); }
+});

internal/web/static/paste-lines.js

@@ -0,0 +1,140 @@
+// #167: with line wrapping on, a logical line can occupy several visual
+// lines; the gutter must show one number per VISUAL line, and each number
+// must sit on the visual row where its logical line STARTS. Per-line spans
+// give each logical line its own box so offsetTop order stays correct even
+// when highlighting spans cross no line boundaries.
+(function () {
+  var body = document.getElementById('codebody');
+  var gutter = document.getElementById('gutter');
+  var code = document.getElementById('code');
+  if (!body || !gutter || !code) return;
+
+  var wrapOn = function () {
+    return document.documentElement.hasAttribute('data-wrap');
+  };
+
+  // Wrap each logical line (split on newline; spans never contain newlines
+  // because HighlightCode highlights per line) in a .codeline block. The
+  // spans are display:block, so they are joined with '' — a '\n' join leaves
+  // newline text nodes between blocks that pre-wrap renders as an extra line
+  // box per line, which would shift every following number down one row (#167,
+  // #205). Whitespace-only text nodes are also stripped defensively below: any
+  // that reach the DOM (older cached HTML, other templates) render as phantom
+  // rows under white-space: pre and drift the gutter.
+  function splitLines() {
+    var html = body.innerHTML;
+    var parts = html.split('\n');
+    var out = [];
+    for (var i = 0; i < parts.length; i++) {
+      out.push('<span class="codeline">' + parts[i] + '</span>');
+    }
+    body.innerHTML = out.join('');
+    // #205: strip whitespace-only text nodes between the .codeline blocks.
+    var ws = [];
+    for (var n = body.firstChild; n; n = n.nextSibling) {
+      if (n.nodeType === 3 && !/\S/.test(n.nodeValue)) ws.push(n);
+    }
+    for (var w = 0; w < ws.length; w++) body.removeChild(ws[w]);
+  }
+
+  // One .gutline block per visual row. The gutter must reproduce the code
+  // column's REAL rendered rows: each number goes on the visual row whose top
+  // matches its .codeline's top (a line wrapping to N rows gets its number on
+  // the FIRST of those rows), and filler rows pad the gaps. Geometry is
+  // measured, not derived from span counts or heights.
+  function renumber() {
+    var lines = body.querySelectorAll('.codeline');
+    // #257: size the gutter column to the widest line number so numbers in
+    // the 100s+ fit their own column instead of bleeding into the code text.
+    // The gutter is box-sizing: border-box, so the column width must be the
+    // digits PLUS the 10px left + 10px right padding; at the CSS default 3ch
+    // the padding alone leaves only ~19px of content, and any 2+ digit
+    // number overflows into the code. Numbers are right-aligned, and the
+    // width below fits the widest number exactly. Set via CSSOM (CSP
+    // forbids inline style attributes). Only touch the width when it
+    // changes: the resize observer below re-runs renumber() when the gutter
+    // width reflows the code column, and rewriting the same value would
+    // ping-pong the fixed point forever.
+    var digits = String(lines.length || 1).length;
+    var w = 'calc(' + digits + 'ch + 20px)';
+    if (gutter.style.width !== w) {
+      gutter.style.minWidth = w;
+      gutter.style.width = w;
+    }
+    if (!wrapOn() || !lines.length) {
+      // wrap OFF: one number per logical line (pre-existing behavior,
+      // including the gutter scrolling with horizontal scroll).
+      var s = '';
+      for (var k = 1; k <= lines.length; k++) s += k + '\n';
+      gutter.textContent = lines.length ? s.slice(0, -1) : '1';
+      return;
+    }
+
+    // Read all rects first: batching layout reads before the writes below
+    // avoids interleaved read/write reflows.
+    var bodyTop = body.getBoundingClientRect().top;
+    var lh = parseFloat(getComputedStyle(body).lineHeight) || 1;
+    var rowIdx = [];
+    var totalRows = 1;
+    for (var i = 0; i < lines.length; i++) {
+      var row = Math.round((lines[i].getBoundingClientRect().top - bodyTop) / lh);
+      if (row < 0) row = 0;
+      rowIdx.push(row);
+      if (row + 1 > totalRows) totalRows = row + 1;
+    }
+    if (totalRows < lines.length) totalRows = lines.length;
+    gutter.textContent = '';
+    var frag = document.createDocumentFragment();
+    var spans = [];
+    for (var r = 0; r < totalRows; r++) {
+      var cell = document.createElement('span');
+      cell.className = 'gutline';
+      cell.textContent = '\u00a0';
+      spans.push(cell);
+      frag.appendChild(cell);
+    }
+    gutter.appendChild(frag);
+    for (var j = 0; j < rowIdx.length; j++) {
+      spans[rowIdx[j]].textContent = String(j + 1);
+    }
+    // A wrapped line whose last visual row is only partially filled can
+    // settle a hair under N * line-height after the gutter is rebuilt; a
+    // gutter pass that changes the code column width reflows it. Verify the
+    // placement one frame later and re-run if any line's row moved (#167).
+    var placed = [];
+    for (var p = 0; p < rowIdx.length; p++) placed.push(rowIdx[p]);
+    requestAnimationFrame(function () {
+      var moved = false;
+      var bodyTop2 = body.getBoundingClientRect().top;
+      var lh2 = parseFloat(getComputedStyle(body).lineHeight) || lh;
+      var tops2 = [];
+      for (var q2 = 0; q2 < lines.length; q2++) tops2.push(lines[q2].getBoundingClientRect().top);
+      for (var q3 = 0; q3 < tops2.length; q3++) {
+        if (Math.round((tops2[q3] - bodyTop2) / lh2) !== placed[q3]) { moved = true; break; }
+      }
+      if (moved) renumber();
+    });
+  }
+
+  splitLines();
+  renumber();
+
+  // Re-renumber on toggle (theme.js toggles data-wrap on <html>) and on any
+  // size change (paste of lots of text, window resize, zoom). Only width
+  // changes of the code column affect wrapping, so observe width only —
+  // height changes caused by our own renumbering must not re-trigger.
+  var mo = new MutationObserver(renumber);
+  mo.observe(document.documentElement, { attributes: true, attributeFilter: ['data-wrap'] });
+  var lastW = body.getBoundingClientRect().width;
+  if (window.ResizeObserver) {
+    var ro = new ResizeObserver(function () {
+      var w = body.getBoundingClientRect().width;
+      if (Math.abs(w - lastW) < 0.5) return;
+      lastW = w;
+      renumber();
+    });
+    ro.observe(body);
+  } else {
+    window.addEventListener('resize', renumber);
+  }
+})();

internal/web/static/paste.js

@@ -0,0 +1,65 @@
+// #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 copyFeedback(btn) {
+  if (!btn) return;
+  // #260 attempt 2: .swapbtn stacks the label and checkmark in the same grid
+  // cell, so the button width is always the wider of the two and never moves.
+  // Feedback is a pure class toggle; no width pinning, no textContent swap.
+  btn.classList.add('ok');
+  clearTimeout(btn._okh);
+  btn._okh = setTimeout(() => btn.classList.remove('ok'), 2000);
+}
+function copyContent(btn) {
+  navigator.clipboard.writeText(document.getElementById('raw-content').value)
+    .then(() => copyFeedback(btn))
+    .catch(() => toast('Copy failed'));
+}
+// #243: copy the paste LINK (full URL), not the paste id or content
+function copyLink(btn) {
+  const url = location.origin + location.pathname;
+  navigator.clipboard.writeText(url)
+    .then(() => copyFeedback(btn))
+    .catch(() => toast('Copy failed'));
+}
+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 = '/public'; 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 copyLinkBtn = document.getElementById('copy-link-btn');
+if (copyLinkBtn) copyLinkBtn.addEventListener('click', function (e) { e.preventDefault(); copyLink(copyLinkBtn); });
+var delBtn = document.getElementById('delete-btn');
+
+// #168: show the compact paste-created pill in the bottom corner, then fade it out
+const createdPill = document.getElementById('created-pill');
+if (createdPill) {
+  requestAnimationFrame(() => createdPill.classList.add('show'));
+  setTimeout(() => createdPill.classList.remove('show'), 4000);
+}
+if (delBtn) delBtn.addEventListener('click', function (e) { e.preventDefault(); redeem(); });
+var statsToggle = document.getElementById('stats-toggle');
+if (statsToggle) statsToggle.addEventListener('click', toggleStats);

internal/web/static/settings.js

@@ -0,0 +1,108 @@
+// #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;
+      // #294: use the generic variant resolvers - midnight is dark-first
+      // (dark preset = 'midnight', light = 'midnight-light'), so a raw
+      // t.id + '-dark' build landed on nonexistent/forced-dark presets.
+      document.documentElement.dataset.preset = dark ? darkPreset(t.id) : lightPreset(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();
+  // topbar.js already binds every .dark-toggle (deferred, so the settings
+  // button exists by then). Only wire here if it somehow did not run,
+  // otherwise the button would toggle twice per click and never change (#197).
+  var dt = document.getElementById('settings-dark-toggle');
+  if (dt && !dt.dataset.darkWired) {
+    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);
+})();

internal/web/static/table.js

@@ -16,7 +16,7 @@ const PaletteTable = (() => {
   const sortVal = (it, k) => {
     let v = it[k];
     if (k === 'title' || k === 'custom_slug') v = (v == null || v === '') ? null : String(v).toLowerCase();
-    if (k === 'language') v = (v == null || v === '') ? 'text' : String(v).toLowerCase();
+    if (k === 'language' || k === 'type') v = (v == null || v === '') ? 'text' : String(v).toLowerCase();
     if (k === 'size' || k === 'view_count' || k === 'created_at') return v == null ? -1 : v;
     return v == null ? null : v;
   };
@@ -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('');
         }
 
@@ -97,14 +97,14 @@ const PaletteTable = (() => {
             const view = items.slice(fOff, fOff + opts.perPage);
             rows.innerHTML = view.length ? view.map(opts.rowHtml).join('') : '';
             if (!view.length) {
-              empty.style.display = 'block';
+              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]);
+            const win = new Set([1, state.page-1, state.page, state.page+1, filtPages]);
             let last = 0;
             for (let i = 1; i <= filtPages; i++) {
               if (win.has(i)) {
@@ -121,7 +121,7 @@ const PaletteTable = (() => {
             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, pages]);
+            const win = new Set([1, state.page-1, state.page, state.page+1, pages]);
             let last = 0;
             for (let i = 1; i <= pages; i++) {
               if (win.has(i)) {

internal/web/static/theme.js

@@ -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();
+    });
+  });
+})();

internal/web/static/topbar.js

@@ -0,0 +1,47 @@
+// #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) {
+      // mark as wired so settings.js does not add a second handler
+      // (#197: double-binding made the settings toggle flip twice = no-op)
+      b.dataset.darkWired = '1';
+      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'));
+      });
+    });
+  })();

internal/web/static/unlock.js

@@ -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';
+});

internal/web/templates/admin.html

@@ -12,7 +12,7 @@
         <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>
@@ -30,79 +30,5 @@
     </div>
   </div>
 </div>
-<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 || {};
-    // 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.style.display = '';
-    });
-  }
-
-  function showLock() {
-    panel.style.display = 'none';
-    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.
-})();
-</script>
+<script src="/static/admin.js" defer></script>
 {{template "foot" .}}

internal/web/templates/can.html

@@ -1,7 +1,7 @@
 {{template "head" .}}
 {{template "topbar" .}}
 <div class="center">
-  <div class="float can-page" style="max-width:900px; width:100%;">
+  <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}}

internal/web/templates/foot.html

@@ -1,21 +1 @@
-{{define "foot"}}<script>
-// 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}}
+{{define "foot"}}<script src="/static/foot.js" defer></script>{{end}}

internal/web/templates/history.html

@@ -8,19 +8,19 @@
   <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-url"><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>
-        <th data-sort="size" class="sortable"><span class="sort-ind"></span>Size</th>
-        <th data-sort="view_count" class="sortable"><span class="sort-ind"></span>Views</th>
-        <th data-sort="created_at" class="sortable"><span class="sort-ind"></span>Created</th>
-        <th data-sort="custom_slug" class="sortable"><span class="sort-ind"></span>URL</th>
-        <th data-sort="id" class="sortable"><span class="sort-ind"></span>ID</th>
+        <th data-sort="title" class="sortable">Paste<span class="sort-ind"></span></th>
+        <th data-sort="type" class="sortable">Type<span class="sort-ind"></span></th>
+        <th data-sort="size" class="sortable">Size<span class="sort-ind"></span></th>
+        <th data-sort="view_count" class="sortable">Views<span class="sort-ind"></span></th>
+        <th data-sort="created_at" class="sortable">Created<span class="sort-ind"></span></th>
+        <th data-sort="custom_slug" class="sortable">URL<span class="sort-ind"></span></th>
+        <th data-sort="id" class="sortable">ID<span class="sort-ind"></span></th>
       </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>
-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
-</script>
+<script src="/static/history.js" defer></script>
 {{template "foot" .}}

internal/web/templates/layout.html

@@ -2,91 +2,17 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="stylesheet" href="/static/app.css">
-<script>
-// 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 = {{ defaultDark }};
-  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();
-    });
-  });
-})();
-</script>
+<link rel="icon" type="image/svg+xml" href="/static/favicon.svg">
+<script src="/static/theme.js" data-default-dark="{{ if defaultDark }}1{{ else }}0{{ end }}"></script>
 {{end}}
 
 {{define "topbar"}}
   <div class="topbar">
-    <a class="logo" href="/history">Palette <em>/ {{ version }}</em></a>
+    <a class="logo" href="/public">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>
-      <a href="/mine" {{if eq .Page "mine"}}class="on"{{end}}>Saved</a>
+      <a href="/public" {{if eq .Page "public"}}class="on"{{end}}>Public</a>
+      <a href="/saved" {{if eq .Page "saved"}}class="on"{{end}}>Saved</a>
       <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>
@@ -98,49 +24,5 @@
       <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>
-  // #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'));
-      });
-    });
-  })();
-  </script>
+  <script src="/static/topbar.js" defer></script>
 {{end}}

internal/web/templates/mine.html

@@ -8,18 +8,19 @@
   <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-url"><col class="col-f"><col class="col-del"></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>
-        <th data-sort="size" class="sortable"><span class="sort-ind"></span>Size</th>
-        <th data-sort="created_at" class="sortable"><span class="sort-ind"></span>Created</th>
-        <th data-sort="custom_slug" class="sortable"><span class="sort-ind"></span>URL</th>
-        <th data-sort="id" class="sortable"><span class="sort-ind"></span>ID</th>
+        <th data-sort="title" class="sortable">Paste<span class="sort-ind"></span></th>
+        <th data-sort="type" class="sortable">Type<span class="sort-ind"></span></th>
+        <th data-sort="size" class="sortable">Size<span class="sort-ind"></span></th>
+        <th data-sort="created_at" class="sortable">Created<span class="sort-ind"></span></th>
+        <th data-sort="custom_slug" class="sortable">URL<span class="sort-ind"></span></th>
+        <th data-sort="id" class="sortable">ID<span class="sort-ind"></span></th>
+        <th aria-label="Delete"></th>
       </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>
@@ -27,51 +28,5 @@
   </div>
 </div>
 <script src="/static/table.js"></script>
-<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: 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();
-</script>
+<script src="/static/mine.js" defer></script>
 {{template "foot" .}}

internal/web/templates/new.html

@@ -19,20 +19,24 @@
           <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>
+        <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">
       <div class="gutter" id="gutter">1</div>
       <textarea class="editor" id="content" placeholder="Paste your code, text, or notes here…" spellcheck="false"></textarea>
+      <img id="file-preview" class="file-preview hidden" alt="File preview">
     </div>
-    <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 class="jumpnav hidden" id="jumpnav" data-jump-scroll="#content">
+      <button type="button" class="btn jump-btn" data-jump="top">Top</button>
+      <button type="button" class="btn jump-btn" data-jump="bottom">Bottom</button>
+    </div>
   </div>
 
   <div class="pane-r">
@@ -46,25 +50,27 @@
         <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">
-        <input type="number" id="expnum" min="1" style="width:80px" placeholder="90"> 
-        <select id="expunit">
+      <div class="pw-row submenu hidden" id="customexp-row">
+        <div class="exp-group">
+          <input type="number" class="num-input" id="expnum" min="1" placeholder="90" aria-label="Custom expiry amount">
+          <select id="expunit" class="unit-select">
             <option value="m">minutes</option>
             <option value="h" selected>hours</option>
             <option value="d">days</option>
             <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>
+        <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 submenu hidden" id="burnrow"><div class="exp-group readable-group"><label class="hint readable-label">Readable</label><input type="number" class="num-input" id="burnreads" min="1" value="1" aria-label="Times readable"><label class="hint readable-label">times</label></div></div>
         <label class="toggle"><input type="checkbox" id="unlisted"> Unlisted</label>
       </div>
     </div>
@@ -75,414 +81,18 @@
       </div>
       <input type="file" id="file-input" class="file-input" aria-label="Choose a file">
       <div id="file-chip-slot"></div>
-      <div class="hint" style="margin-top:6px; font-size:19px; display:none" id="file-text-note">File pastes ignore the text editor (one file per paste)</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" id="result-card" style="display:none">
+    <div class="float side-section hidden" id="result-card">
       <h3>Result</h3>
-      <div class="hint" id="result" style="word-break:normal;overflow-wrap:break-word">empty</div>
+      <div class="hint wrap-normal" id="result">empty</div>
     </div>
   </div>
 </div>
-<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
-
-// #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 || '');
-  $('result-card').style.display = 'block';
-  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();
-  $('file-text-note').style.display = 'block';
-}
-
-function clearAttachedFile() {
-  attachedFile = null;
-  $('file-input').value = '';
-  renderFileChip();
-  $('file-text-note').style.display = 'none';
-}
-
-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.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>
+<script src="/static/new.js" defer></script>
+<script src="/static/jump.js" defer></script>
 {{template "foot" .}}

internal/web/templates/notfound.html

@@ -0,0 +1,13 @@
+{{template "head" .}}
+{{template "topbar" .}}
+<div class="center">
+  <div class="float notfound-card">
+    <div class="inner">
+      <div class="lockring"><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="10"/><line x1="12" y1="8" x2="12" y2="12"/><line x1="12" y1="16" x2="12.01" y2="16"/></svg></div>
+      <h1>Paste ID not found</h1>
+      <p class="sub">The paste <span class="slug">/{{.ID}}</span> does not exist, has expired, or was burned.</p>
+      <a class="btn" href="/new">Create a new paste</a>
+    </div>
+  </div>
+</div>
+{{template "foot" .}}

internal/web/templates/paste.html

@@ -6,21 +6,22 @@
       <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>
-      {{if .DeletionToken}}<a class="iconbtn danger" href="#" onclick="redeem(); return false;">delete</a>{{end}}
+      <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 swapbtn" href="#" id="copy-link-btn"><span class="swap-label">Link</span><span class="swap-check">✓</span></a>
+      <a class="iconbtn swapbtn" href="#" id="copy-btn"><span class="swap-label">Copy</span><span class="swap-check">✓</span></a>
+      {{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>
       <div class="stats-body" id="stats-body" hidden>
         <div class="stats-grid">
-          <span class="stats-k">Language</span><span class="stats-v">{{if .Language}}{{.Language}}{{else}}text{{end}}</span>
+          <span class="stats-k">Type</span><span class="stats-v">{{.TypeLabel}}</span>
           <span class="stats-k">Size</span><span class="stats-v">{{.SizeHuman}} ({{.LineCount}} lines)</span>
           <span class="stats-k">Views</span><span class="stats-v">{{.ViewCount}}</span>
           <span class="stats-k">Created</span><span class="stats-v" data-ts="{{.CreatedAtUnix}}">{{.CreatedAgo}}</span>
@@ -34,68 +35,33 @@
     </div>
   </div>
   {{if .JustCreated}}
-  <div class="float">
-    <div class="created-banner" style="display:block">
-      Paste created. Link copied to clipboard: <a href="/{{.ID}}">{{.Host}}/{{.ID}}</a>
-      {{if .DeletionToken}} · deletion token: <code>{{.DeletionToken}}</code>{{end}}
-    </div>
-  </div>
+  <div class="created-pill" id="created-pill" role="status">Paste Created</div>
   {{end}}
   {{if .Attachment}}
   <div class="float">
     <div class="attachment-bar">
+      {{if .AttachmentImage}}
+      <div class="attachment-preview"><img src="/f/{{.Attachment.ID}}/{{.Attachment.Filename}}" alt="{{.Attachment.Filename}}"></div>
+      {{end}}
       <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}}
+  {{if not .Attachment}}
   <div class="float">
-    <div class="code"><div class="gutter">{{.Gutter}}</div><div class="codebody" id="codebody">{{.ContentHTML}}</div></div>
+    <div class="code" id="code"><div class="gutter" id="gutter">{{.Gutter}}</div><div class="codebody" id="codebody">{{.ContentHTML}}</div></div>
+  </div>
+  {{end}}
+  <div class="jumpnav hidden" id="jumpnav">
+    <button type="button" class="btn jump-btn" data-jump="top">Top</button>
+    <button type="button" class="btn jump-btn" data-jump="bottom">Bottom</button>
   </div>
 </div>
 <input type="hidden" id="raw-content" value="{{.ContentAttr}}">
-<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() {
-  if (!confirm('Hard delete this paste immediately?')) return;
-  let tok = '';
-  try { tok = sessionStorage.getItem('deletion_token_{{.ID}}') || ''; } catch(e) {}
-  if (!tok) { alert('deletion token not available in this browser'); return; }
-  fetch('/api/pastes/{{.ID}}/redeem', {method: 'DELETE', headers: {'Authorization': 'Bearer ' + tok}})
-    .then(r => { if (r.ok) location.href = '/history'; else alert('delete failed'); });
-}
-</script>
+<script src="/static/paste.js" defer data-paste-id="{{.ID}}"></script>
+<script src="/static/paste-lines.js" defer></script>
+<script src="/static/jump.js" defer></script>
 {{template "foot" .}}

internal/web/templates/settings.html

@@ -13,102 +13,11 @@
       </button>
       <h3>Theme</h3>
       <div class="theme-grid" id="theme-grid"></div>
-      <h3 style="margin-top:18px">Editor</h3>
-      <label class="toggle" for="wrap-setting" style="display:inline-flex"><input type="checkbox" id="wrap-setting"> Line wrap</label>
+      <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>
-(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);
-    btn.innerHTML = '<strong>' + t.name + '</strong>' +
-      '<span class="swatches">' + light.map(function (c) {
-        return '<span class="swatch" style="background:' + c + '"></span>';
-      }).join('') + '</span>' +
-      '<span class="swatches">' + dark.map(function (c) {
-        return '<span class="swatch" style="background:' + c + '"></span>';
-      }).join('') + '</span>';
-    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);
-})();
-</script>
+<script src="/static/settings.js" defer></script>
 {{template "foot" .}}

internal/web/templates/unlock.html

@@ -18,12 +18,5 @@
     <div class="foot">Created <span data-ts="{{.CreatedAtUnix}}">{{.CreatedAgo}}</span></div>
   </div>
 </div>
-<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>
+<script src="/static/unlock.js" defer></script>
 {{template "foot" .}}

internal/web/web.go

@@ -104,6 +104,13 @@ func (h *Handlers) renderPage(w http.ResponseWriter, name string, data any) {
 	}
 }
 
+// RenderNotFoundPage is the exported not-found renderer used by the api
+// package (#173): the router's NotFound handler renders the main UI with a
+// friendly "Paste ID not found" message, still with HTTP 404.
+func (h *Handlers) RenderNotFoundPage(w http.ResponseWriter, r *http.Request) {
+	h.renderNotFound(w, r, r.URL.Path)
+}
+
 // 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)
@@ -200,6 +207,44 @@ func (h *Handlers) writeRateLimited(w http.ResponseWriter, retryAfterSecs int) {
 	w.Write([]byte(`{"error":"rate limit exceeded"}`))
 }
 
+// renderNotFound serves the friendly not-found page (#173): the main UI
+// chrome (topbar, centered card) with a "Paste ID not found" message in the
+// result card, instead of a bare text 404. Still returns HTTP 404 so
+// crawlers/validators see the correct status.
+func (h *Handlers) renderNotFound(w http.ResponseWriter, r *http.Request, id string) {
+	h.renderPageStatus(w, "notfound.html", http.StatusNotFound, map[string]any{"Page": "notfound", "ID": id})
+}
+
+// HandleNotFoundPage serves the friendly not-found page for unknown routes
+// (#173): main UI chrome with a "Paste ID not found" message. Called from the
+// chi NotFound handler in the api package.
+func (h *Handlers) HandleNotFoundPage(w http.ResponseWriter, r *http.Request) {
+	h.renderNotFound(w, r, r.URL.Path)
+}
+
+// renderPageStatus renders a template with an explicit HTTP status code.
+func (h *Handlers) renderPageStatus(w http.ResponseWriter, name string, status int, data any) {
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.WriteHeader(status)
+	if err := h.UI.tmpl.ExecuteTemplate(w, name, data); err != nil {
+		http.Error(w, "template error: "+err.Error(), 500)
+	}
+}
+
+// attachmentExt returns the lowercase file extension (without dot) of a
+// filename, or "" when the name has none. Used by the Type display (#235).
+func attachmentExt(filename string) string {
+	name := filename
+	if i := strings.LastIndexByte(name, '/'); i >= 0 {
+		name = name[i+1:]
+	}
+	i := strings.LastIndexByte(name, '.')
+	if i <= 0 || i == len(name)-1 {
+		return ""
+	}
+	return strings.ToLower(name[i+1:])
+}
+
 func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justCreated bool, deletionToken string, readsRemaining *int) {
 	lines := strings.Count(row.Content, "\n") + 1
 	gutter := ""
@@ -214,27 +259,62 @@ func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justC
 	if lang == "" {
 		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
 	}
+	// #221: for attachment pastes the stored text content is empty (the file
+	// replaced it), so the summary size must come from the attachment blob,
+	// not len(row.Content), or the summary shows "0 B".
+	summarySize := len(row.Content)
+	if attachment != nil {
+		summarySize = int(attachment.Size)
+	}
+	// #235: column renamed to "Type". Text pastes keep the detected
+	// language; attachment pastes show the file extension instead.
+	attExt := ""
+	typeLabel := lang
+	if attachment != nil {
+		if ext := attachmentExt(attachment.Filename); ext != "" {
+			attExt = ext
+			typeLabel = ext
+		}
+	}
+	summary := fmt.Sprintf("%s · %s · %d views · %s", typeLabel, humanSize(summarySize), row.ViewCount, agoString(row.CreatedAt))
+	// #221: image attachments render the image, not a text/code box. Size
+	// comes from the attachment's actual file size, not the text content.
+	attImage := false
+	if attachment != nil {
+		switch attachment.Mime {
+		case "image/png", "image/jpeg", "image/gif", "image/webp":
+			attImage = true
+		}
+	}
+	sizeHuman := humanSize(len(row.Content))
+	lineCount := lines
+	if attachment != nil {
+		sizeHuman = attachment.SizeHuman
+		lineCount = 1
+	}
 	data := map[string]any{
 		"Page":          "paste",
 		"ID":            row.ID,
 		"Title":         row.Title.String,
-		"Language":      row.Language.String,
+		"Language":      typeLabel,
+		"TypeLabel":     typeLabel,
+		"HasAttachment":  attachment != nil,
+		"AttachmentExt": attExt,
 		"StatsSummary":  summary,
-		"SizeHuman":     humanSize(len(row.Content)),
+		"SizeHuman":     sizeHuman,
 		"HasPassword":   row.PasswordHash.Valid,
 		"BurnAfterRead": row.BurnAfterRead,
 		"CustomSlug":    row.CustomSlug.String,
 		"ContentHTML":   template.HTML(langpkg.HighlightCode(row.Content, row.Language.String)), // safe: HighlightCode escapes all non-span text
 		"ContentAttr":   row.Content,
 		"Gutter":        strings.TrimSuffix(gutter, "\n"),
-		"LineCount":     lines,
+		"LineCount":     lineCount,
 		"SizeBytes":     len(row.Content),
 		"CreatedAgo":    agoString(row.CreatedAt),
 		"CreatedAtUnix": row.CreatedAt,
@@ -248,6 +328,7 @@ func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justC
 		"ReadsTotal":    int(row.ReadsLimit.Int64),
 		"JustCreated":   justCreated,
 		"Attachment":    attachment,
+		"AttachmentImage": attImage,
 		"Host":          "this host",
 	}
 	h.renderPage(w, "paste.html", data)
@@ -262,11 +343,14 @@ func (h *Handlers) HandlePasteView(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if row == nil {
-		http.NotFound(w, r)
+		// #173: a missing paste ID gets the main UI with a friendly message,
+		// not a bare text 404 page.
+		h.renderNotFound(w, r, id)
 		return
 	}
 	if row.ExpiresAt.Valid && row.ExpiresAt.Int64 < time.Now().Unix() {
-		http.Error(w, "paste expired", 404)
+		// #173: expired pastes render the same friendly not-found UI.
+		h.renderNotFound(w, r, id)
 		return
 	}
 	if row.PasswordHash.Valid {
@@ -318,7 +402,7 @@ func (h *Handlers) HandlePasteView(w http.ResponseWriter, r *http.Request) {
 		token = c.Value
 	}
 	if justCreated && token != "" {
-		// one-time display of the deletion token via the created banner
+		// one-time display of the deletion token via sessionStorage (#143)
 		http.SetCookie(w, &http.Cookie{Name: "tok_" + row.ID, Value: token, Path: "/", MaxAge: 60, HttpOnly: true, SameSite: http.SameSiteLaxMode})
 	}
 	// Count the view for real page renders, deduped per-viewer within the
@@ -333,8 +417,8 @@ func (h *Handlers) HandlePasteView(w http.ResponseWriter, r *http.Request) {
 	// Just-created first render does not count as a read for the creator.
 	if !justCreated {
 		rem, admitted := h.Store.RegisterRead(row, h.ViewerID(r), h.BurnWindowMin())
-		if !admitted { // #58: lost the burn claim; do not render content
-			http.NotFound(w, r)
+		if !admitted { // #58: lost the burn claim; #173: friendly not-found UI
+			h.renderNotFound(w, r, row.ID)
 			return
 		}
 		h.renderPaste(w, row, false, "", rem)
@@ -349,9 +433,9 @@ func (h *Handlers) HandleNewPage(w http.ResponseWriter, r *http.Request) {
 	h.renderPage(w, "new.html", map[string]any{"Page": "new"})
 }
 
-// HandleHistoryPage serves /history.
+// HandleHistoryPage serves /public.
 func (h *Handlers) HandleHistoryPage(w http.ResponseWriter, r *http.Request) {
-	h.renderPage(w, "history.html", map[string]any{"Page": "history"})
+	h.renderPage(w, "history.html", map[string]any{"Page": "public"})
 }
 
 // HandleSettingsPage serves /settings.
@@ -368,9 +452,9 @@ func (h *Handlers) HandleSettingsPage(w http.ResponseWriter, r *http.Request) {
 	h.renderPage(w, "settings.html", map[string]any{"Page": "settings", "Themes": themes})
 }
 
-// HandleMinePage serves /mine.
+// HandleMinePage serves /saved.
 func (h *Handlers) HandleMinePage(w http.ResponseWriter, r *http.Request) {
-	h.renderPage(w, "mine.html", map[string]any{"Page": "mine"})
+	h.renderPage(w, "mine.html", map[string]any{"Page": "saved"})
 }
 
 // HandleAdminPage serves /admin.
@@ -383,8 +467,12 @@ 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
-// 'unsafe-inline' because the page templates carry inline scripts; CSP
+// responses and /raw content pass through untouched.
+// #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.
@@ -396,7 +484,7 @@ func SecurityHeaders(next http.Handler) http.Handler {
 		// is harmless and arguably desirable.
 		h := w.Header()
 		h.Set("Content-Security-Policy",
-			"default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; 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)