Burn after N reads: reads_limit/reads_used, per-viewer 15min dedupe via paste_views, reads_remaining in API+stats pill, raw counts as read (#49)

- new web/static/table.js (PaletteTable): shared live search, client-side
  sort with indicators, pagination, row rendering + click-through
- history.html and mine.html both consume it; data endpoint, columns,
  empty-state text and row extras (delete buttons) are page-supplied
- verified in-browser: search, sort, delete on /mine; sort, pager on /history

Closes #57

.gitea/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: [debian-latest]
     steps:
       - uses: actions/checkout@v4
 
@@ -26,7 +26,7 @@ jobs:
     # build & push image only on tags (releases)
     if: startsWith(github.ref, 'refs/tags/')
     needs: test
-    runs-on: ubuntu-latest
+    runs-on: [debian-latest]
     env:
       # dind sidecar listens on tcp; job containers reach it via the docker bridge gateway
       DOCKER_HOST: tcp://172.17.0.1:2375

.gitignore

@@ -1,4 +1,4 @@
-__pycache__/
+palette
-node_modules/
+palette.db
-*.log
+palette.db-shm
-.DS_Store
+palette.db-wal

burn.go

@@ -3,8 +3,10 @@ package main
 import (
 	"crypto/rand"
 	"crypto/subtle"
+	"database/sql"
 	"encoding/base64"
 	"net/http"
+	"time"
 
 	"github.com/go-chi/chi/v5"
 )
@@ -16,14 +18,61 @@ func genDeletionToken() string {
 	return base64.RawURLEncoding.EncodeToString(b)
 }
 
-// maybeBurn marks a paste soft-deleted if burn_after_read is set.
+// readWindowMinutes is the per-viewer dedupe window for burn-after-N-reads
-// Returns true if this read consumed the paste.
+// (#49): the same viewer cookie returning within 15 minutes does not count
-func (s *Store) maybeBurn(row *PasteRow) bool {
+// as a new read. See the decision comment on issue #49.
-	if !row.BurnAfterRead {
+const readWindowMinutes = 15
-		return false
+
+// timeNow is overridable in tests to inject the clock.
+var timeNow = time.Now
+
+// registerRead applies the burn-after-read budget for one view (#49).
+// For pastes with reads_limit set: the viewer's paste_views row is checked;
+// a view within readWindowMinutes of the viewer's last view is deduped
+// (count=false). Otherwise reads_used is incremented, and the paste is
+// soft-deleted (burned) once reads_used reaches reads_limit. Viewers without
+// a cookie (plain API clients) count as their own viewer id "".
+// For legacy plain burn_after_read pastes (no reads_limit), any read burns.
+// Returns the number of reads remaining (0 when burned), or nil when no
+// budget is set. view_count is tracked separately and unaffected.
+func (s *Store) registerRead(row *PasteRow, viewerID string) (remaining *int, count bool) {
+	if !row.ReadsLimit.Valid {
+		if row.BurnAfterRead {
+			s.SoftDelete(row.ID)
+			r := 0
+			return &r, true
+		}
+		return nil, false
 	}
-	s.SoftDelete(row.ID)
+	now := timeNow().Unix()
-	return true
+	var last sql.NullInt64
+	s.db.QueryRow(`SELECT last_viewed FROM paste_views WHERE paste_id=? AND viewer_id=?`,
+		row.ID, viewerID).Scan(&last)
+	if last.Valid && now-last.Int64 < readWindowMinutes*60 {
+		r := int(row.ReadsLimit.Int64) - row.ReadsUsed
+		if r < 0 {
+			r = 0
+		}
+		return &r, false
+	}
+	s.db.Exec(`INSERT INTO paste_views (paste_id, viewer_id, last_viewed) VALUES (?,?,?)
+		ON CONFLICT(paste_id, viewer_id) DO UPDATE SET last_viewed = excluded.last_viewed`,
+		row.ID, viewerID, now)
+	used := row.ReadsUsed + 1
+	s.db.Exec(`UPDATE pastes SET reads_used=? WHERE id=?`, used, row.ID)
+	if int64(used) >= row.ReadsLimit.Int64 {
+		s.SoftDelete(row.ID)
+	}
+	r := int(row.ReadsLimit.Int64) - int(used)
+	if r < 0 {
+		r = 0
+	}
+	return &r, true
+}
+
+// burned reports whether a read-limited paste has exhausted its budget.
+func (row *PasteRow) burned() bool {
+	return row.ReadsLimit.Valid && int64(row.ReadsUsed) >= row.ReadsLimit.Int64
 }
 
 func deletionTokenEqual(stored, given string) bool {

burnreads_test.go

@@ -0,0 +1,179 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+)
+
+type anyHandler interface {
+	ServeHTTP(http.ResponseWriter, *http.Request)
+}
+
+// createBurnReads creates a burn-after-N-reads paste and returns its id.
+func createBurnReads(t *testing.T, h anyHandler, reads int) string {
+	t.Helper()
+	body, _ := json.Marshal(map[string]any{"content": "limited", "burn_after_read": true, "burn_after_reads": reads})
+	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(string(body)))
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != 201 {
+		t.Fatalf("create burn_after_reads=%d: %d %s", reads, rec.Code, rec.Body.String())
+	}
+	var created struct {
+		ID string `json:"id"`
+	}
+	json.Unmarshal(rec.Body.Bytes(), &created)
+	if created.ID == "" {
+		t.Fatal("no id in create response")
+	}
+	return created.ID
+}
+
+func getWithCookie(t *testing.T, h anyHandler, id, viewer string) *httptest.ResponseRecorder {
+	t.Helper()
+	req := httptest.NewRequest("GET", "/api/pastes/"+id, nil)
+	if viewer != "" {
+		req.AddCookie(&http.Cookie{Name: "vwr", Value: viewer})
+	}
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	return rec
+}
+
+func TestBurnAfterNReadsDistinctViewers(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+	id := createBurnReads(t, h, 2)
+
+	// viewer A: ok (read 1)
+	if rec := getWithCookie(t, h, id, "aaa"); rec.Code != 200 {
+		t.Fatalf("read 1 (viewer A): %d %s", rec.Code, rec.Body.String())
+	}
+	// viewer B: ok (read 2)
+	if rec := getWithCookie(t, h, id, "bbb"); rec.Code != 200 {
+		t.Fatalf("read 2 (viewer B): %d %s", rec.Code, rec.Body.String())
+	}
+	// viewer C: burned -> 404
+	if rec := getWithCookie(t, h, id, "ccc"); rec.Code != 404 {
+		t.Fatalf("read 3 expected 404, got %d", rec.Code)
+	}
+}
+
+func TestBurnReadsSameViewerWithinWindowNoDecrement(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+	id := createBurnReads(t, h, 2)
+
+	// same viewer reads twice within the window: second is deduped
+	if rec := getWithCookie(t, h, id, "aaa"); rec.Code != 200 {
+		t.Fatalf("read 1: %d", rec.Code)
+	}
+	if rec := getWithCookie(t, h, id, "aaa"); rec.Code != 200 {
+		t.Fatalf("deduped re-read expected 200, got %d", rec.Code)
+	}
+	// another viewer still gets read 2 (budget not consumed by re-reads)
+	if rec := getWithCookie(t, h, id, "bbb"); rec.Code != 200 {
+		t.Fatalf("read 2: %d", rec.Code)
+	}
+}
+
+func TestBurnReadsWindowExpiryRecounts(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+	id := createBurnReads(t, h, 2)
+
+	base := time.Now()
+	timeNow = func() time.Time { return base }
+	t.Cleanup(func() { timeNow = time.Now })
+
+	if rec := getWithCookie(t, h, id, "aaa"); rec.Code != 200 {
+		t.Fatalf("read 1: %d", rec.Code)
+	}
+	// 10 minutes later: still within window, deduped
+	timeNow = func() time.Time { return base.Add(10 * time.Minute) }
+	if rec := getWithCookie(t, h, id, "aaa"); rec.Code != 200 {
+		t.Fatalf("re-read within window: %d", rec.Code)
+	}
+	// 20 minutes after first read: window expired, counts as read 2
+	timeNow = func() time.Time { return base.Add(20 * time.Minute) }
+	if rec := getWithCookie(t, h, id, "aaa"); rec.Code != 200 {
+		t.Fatalf("re-read after window expected 200, got %d", rec.Code)
+	}
+	// budget exhausted -> 404 even for the same viewer
+	if rec := getWithCookie(t, h, id, "aaa"); rec.Code != 404 {
+		t.Fatalf("after budget expected 404, got %d", rec.Code)
+	}
+}
+
+func TestBurnReadsDefaultOne(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+	// burn_after_read without burn_after_reads defaults to 1 read
+	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(`{"content":"one","burn_after_read":true}`))
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	var created struct {
+		ID string `json:"id"`
+	}
+	json.Unmarshal(rec.Body.Bytes(), &created)
+
+	if rec := getWithCookie(t, h, created.ID, "aaa"); rec.Code != 200 {
+		t.Fatalf("read 1: %d", rec.Code)
+	}
+	if rec := getWithCookie(t, h, created.ID, "bbb"); rec.Code != 404 {
+		t.Fatalf("read 2 expected 404, got %d", rec.Code)
+	}
+}
+
+func TestBurnReadsPageViewCounts(t *testing.T) {
+	if webUIInstance == nil {
+		ui, err := NewWebUI()
+		if err != nil {
+			t.Fatal(err)
+		}
+		webUIInstance = ui
+	}
+	s := testServer(t)
+	h := s.routes()
+	id := createBurnReads(t, h, 2)
+
+	// HTML page view counts as a read too (documented decision)
+	req := httptest.NewRequest("GET", "/"+id, nil)
+	req.AddCookie(&http.Cookie{Name: "vwr", Value: "aaa"})
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != 200 {
+		t.Fatalf("page view 1: %d", rec.Code)
+	}
+	// re-view within window: deduped
+	req = httptest.NewRequest("GET", "/"+id, nil)
+	req.AddCookie(&http.Cookie{Name: "vwr", Value: "aaa"})
+	rec = httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != 200 {
+		t.Fatalf("page re-view: %d", rec.Code)
+	}
+	// distinct viewer: read 2, page renders with reads remaining
+	req = httptest.NewRequest("GET", "/"+id, nil)
+	req.AddCookie(&http.Cookie{Name: "vwr", Value: "bbb"})
+	rec = httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != 200 {
+		t.Fatalf("page view 2: %d", rec.Code)
+	}
+	if !strings.Contains(rec.Body.String(), "Reads left") {
+		t.Fatal("stats pill missing 'Reads left'")
+	}
+	// third viewer: burned
+	req = httptest.NewRequest("GET", "/"+id, nil)
+	req.AddCookie(&http.Cookie{Name: "vwr", Value: "ccc"})
+	rec = httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != 404 {
+		t.Fatalf("page view 3 expected 404, got %d", rec.Code)
+	}
+}

customslug_test.go

@@ -47,8 +47,9 @@ func TestCustomSlugValidation(t *testing.T) {
 		{"bad slug", `{"content":"x","custom_slug":"has space"}`, 400},
 		{"", `{"content":"x","custom_slug":""}`, 201}, // empty = no custom slug, fine
 	}
-	for _, c := range cases {
+	for i, c := range cases {
 		req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(c.body))
+		req.RemoteAddr = "10.7.1." + string(rune('1'+i)) + ":1000" // avoid rate-limit bucket sharing
 		rec := httptest.NewRecorder()
 		h.ServeHTTP(rec, req)
 		if rec.Code != c.wantCode {

go.mod

@@ -4,12 +4,14 @@ go 1.27.1
 
 require (
 	github.com/go-chi/chi/v5 v5.3.2
+	github.com/go-enry/go-enry/v2 v2.9.6
 	golang.org/x/crypto v0.39.0
 	modernc.org/sqlite v1.58.0
 )
 
 require (
 	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/go-enry/go-oniguruma v1.2.1 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/mattn/go-isatty v0.0.24 // indirect
 	github.com/ncruces/go-strftime v1.0.0 // indirect

go.sum

@@ -1,7 +1,14 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/go-chi/chi/v5 v5.3.2 h1:5YQkICvTCSZ25hoRsyJazN0scjzKGiu4VAUc7H1o1nY=
 github.com/go-chi/chi/v5 v5.3.2/go.mod h1:R+tYY2hNuVUUjxoPtqUdgBqevM9s9njzkTLutVsOCto=
+github.com/go-enry/go-enry/v2 v2.9.6 h1:np63eOtMV56zfYDHnFVgpEVOk8fr2kmylcMnAZUDbSs=
+github.com/go-enry/go-enry/v2 v2.9.6/go.mod h1:9yrj4ES1YrbNb1Wb7/PWYr2bpaCXUGRt0uafN0ISyG8=
+github.com/go-enry/go-oniguruma v1.2.1 h1:k8aAMuJfMrqm/56SG2lV9Cfti6tC4x8673aHCcBk+eo=
+github.com/go-enry/go-oniguruma v1.2.1/go.mod h1:bWDhYP+S6xZQgiRL7wlTScFYBe023B6ilRZbCAD5Hf4=
 github.com/google/pprof v0.0.0-20260802141513-ef3492d7dac3 h1:LMLX+LgTNWpfvCBdFebv6EsYotImrt/Ppc5cXIriCSo=
 github.com/google/pprof v0.0.0-20260802141513-ef3492d7dac3/go.mod h1:jl5iWTm0/hd5PjEYEOuwAJ57L/CibdZfrqZ5XA5GrCk=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
@@ -12,8 +19,17 @@ github.com/mattn/go-isatty v0.0.24 h1:tGZZoVgT/KiqK1c8ocVLeDS8BSWMRd47J3Lbz7vsRe
 github.com/mattn/go-isatty v0.0.24/go.mod h1:nMCL3Zebbrt45jsMDgnfIwz6ydEQApk5oEI3HqDio6A=
 github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
 github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
 golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
 golang.org/x/mod v0.38.0 h1:MECBjubtXD7yj4HrhIUcywNaGeNVUdfVnxmPajOk4yk=
@@ -24,6 +40,11 @@ golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
 golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/tools v0.48.0 h1:3+hClM1aLL5mjMKm5ovokw9epgRXPuu2tILgismM6RE=
 golang.org/x/tools v0.48.0/go.mod h1:08xX0orndb/F7jJxGDicx061tyd5pcMto75YMAXr6lk=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 modernc.org/cc/v4 v4.29.2 h1:h6+9ciCnPKutf4I03CvheAvDLX7+IHlqR6Iy6J+cgd8=
 modernc.org/cc/v4 v4.29.2/go.mod h1:OnovgIhbbMXMu1aISnJ0wvVD1KnW+cAUJkIrAWh+kVI=
 modernc.org/ccgo/v4 v4.35.0 h1:F+TUsmw09QxLzmi3aeYYGxjAXarmZaKgj3mKQHNaA8w=

guess.go

@@ -0,0 +1,126 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"regexp"
+	"strings"
+
+	"github.com/go-enry/go-enry/v2"
+)
+
+// hintRule is a lightweight regex hint that nudges detection. Hints don't
+// decide on their own: matching hints are passed to enry's classifier as
+// candidate languages, and enry (trained on Linguist samples) makes the final
+// call. Adding a language later is usually a one-line addition here plus the
+// dropdown in web/templates/new.html.
+type hintRule struct {
+	lang string // enry language name
+	re   *regexp.Regexp
+}
+
+// hintRules are evaluated in order; keep more specific languages earlier so
+// ties break in their favor.
+var hintRules = []hintRule{
+	{"Dockerfile", regexp.MustCompile(`(?mi)^(FROM\s+\S+:\S*|RUN\s+\S+|COPY\s+\S+\s+\S+|ENTRYPOINT\s+|WORKDIR\s+/)`)},
+	{"Diff", regexp.MustCompile(`(?m)^(diff --git|--- a/|\+\+\+ b/|@@ -\d+)`)},
+	{"PHP", regexp.MustCompile(`(?m)<\?php|\$\w+\s*=\s*[^=]|\becho\s+["'$]`)},
+	{"HTML", regexp.MustCompile(`(?i)<(!DOCTYPE|html|head|body|div|span|script|p|a)\b`)},
+	{"XML", regexp.MustCompile(`(?m)^<\?xml\b|<\/?[a-zA-Z][\w.-]*:[\w.-]*[>\s]`)},
+	{"CSS", regexp.MustCompile(`(?m)(^|\})\s*[^{}@]+\{[^}]*:[^}]*\}|@(media|import|font-face)\b`)},
+	{"TypeScript", regexp.MustCompile(`(?m)(:\s*(string|number|boolean|any)\b|\binterface \w+ \{|\btype \w+ =|\bimplements \w+)`)},
+	{"TOML", regexp.MustCompile(`(?m)^\[[\w."-]+\]\s*$|^\w[\w-]*\s*=\s*("[^"]*"|\d+|true|false|\[[^\]]*\])\s*$`)},
+	{"INI", regexp.MustCompile(`(?m)^\[[\w.-]+\]\s*$|^\w[\w.-]*\s*=\s*\S+\s*$`)},
+	{"Ruby", regexp.MustCompile(`(?m)(\bdef \w+($|\s)|\brequire ['"]|\bputs \w+|@\w+\s*=\s*[^=]|\bend\b\s*$)`)},
+	{"Perl", regexp.MustCompile(`(?m)(\buse strict\b|\bmy \$\w+|->\{|sub \w+ \{)`)},
+	{"Lua", regexp.MustCompile(`(?m)(\bfunction\s+\w+\s*\(|\blocal \w+\s*=|\bthen\b|\belseif\b|\.\.\.)`)},
+	{"Go", regexp.MustCompile(`(?m)^\s*(package \w+|import \(|func (\w+|\() )`)},
+	{"Python", regexp.MustCompile(`(?m)^\s*(def \w+|class \w+|import \w+|from \w+ import |@\w+)`)},
+	{"JavaScript", regexp.MustCompile(`(?m)(\bconst \w+ = |require\(|import \w+ from |=> \{|\bconsole\.log\()` )},
+	{"Rust", regexp.MustCompile(`(?m)(\bfn \w+|let mut \b|\bimpl \b|use std::)`)},
+	{"Java", regexp.MustCompile(`(?m)(\bpublic (static |final |class )|\bSystem\.out\.print|import java\.)`)},
+	{"C", regexp.MustCompile(`(?m)(#include\s*<\w+\.h>|printf\(|\bint main\()` )},
+	{"C++", regexp.MustCompile(`(?m)(#include\s*<(iostream|vector|string)>|std::|\bcout\s*<<)`)},
+	{"SQL", regexp.MustCompile(`(?i)\b(SELECT .+ FROM|INSERT INTO|CREATE TABLE|UPDATE \w+ SET)\b`)},
+	{"YAML", regexp.MustCompile(`(?m)^(\w[\w-]*:\s*(\||\S)|  \w[\w-]*: |---\s*$)`)},
+	{"Markdown", regexp.MustCompile("(?m)^(#{1,6} \\S|\\|.*\\||-\\s\\[\\s?\\]|```)")},
+	{"Shell", regexp.MustCompile(`(?m)^(#!.*bash|#!.*sh|\w+\(\)\s*\{)` )},
+}
+
+// canonical maps enry display names to the lowercase ids we store and render.
+var canonical = map[string]string{
+	"Dockerfile": "dockerfile",
+	"C#":         "csharp",
+	"Shell":      "bash",
+}
+
+// guessLang detects a language from pasted content. Order: fast decisive
+// paths (empty, JSON, unambiguous markers enry can't see without a filename),
+// then enry strategies (shebangs, XML decl, modelines, content heuristics),
+// then enry's classifier seeded by our regex hints.
+func guessLang(s string) string {
+	src := strings.TrimSpace(s)
+	if src == "" {
+		return ""
+	}
+
+	// JSON: must start with { or [ and parse — cheaper and more decisive
+	// than the classifier for pasted JSON, and handles compact single-line
+	// JSON that content heuristics miss.
+	if src[0] == '{' || src[0] == '[' {
+		var v any
+		if json.Unmarshal([]byte(src), &v) == nil {
+			return "json"
+		}
+	}
+
+	// enry's built-in strategies: shebangs, XML declaration, modelines,
+	// content heuristics.
+	if lang := enry.GetLanguage("", []byte(src)); lang != "" && lang != enry.OtherLanguage {
+		return normalizeLang(lang)
+	}
+
+	// collect hint-matched languages as classifier candidates
+	cands := []string{}
+	for _, h := range hintRules {
+		if h.re.MatchString(src) {
+			cands = append(cands, h.lang)
+		}
+	}
+	if len(cands) > 0 {
+		// enry's Bayesian classifier (trained on Linguist samples) picks the
+		// best of the hint candidates; fall back to the first hint if it
+		// can't decide.
+		if lang, _ := enry.GetLanguageByClassifier([]byte(src), cands); lang != "" {
+			return normalizeLang(lang)
+		}
+		return normalizeLang(cands[0])
+	}
+
+	return "text"
+}
+
+// normalizeLang maps enry display names to our lowercase stored ids.
+func normalizeLang(lang string) string {
+	if c, ok := canonical[lang]; ok {
+		return c
+	}
+	return strings.ToLower(lang)
+}
+
+func (a *apiServer) handleGuessLang(w http.ResponseWriter, r *http.Request) {
+	setRateLimitHeaders(w, 1, 5)
+	if !rateLimitGuess(r) {
+		writeRateLimited(w, 1)
+		return
+	}
+	var req struct {
+		Content string `json:"content"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeErr(w, http.StatusBadRequest, "invalid json body")
+		return
+	}
+	lang := guessLang(req.Content)
+	writeJSON(w, http.StatusOK, map[string]any{"language": lang})
+}

guess_test.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"strings"
+	"testing"
+)
+
+// TestGuessLangExisting covers languages detected before the enry switch and
+// still expected to work after it.
+func TestGuessLangExisting(t *testing.T) {
+	cases := map[string]string{
+		"package main\n\nfunc main() {}\n":                                    "go",
+		"def foo():\n    return 1\n":                                          "python",
+		"const x = 1;\nconsole.log(x);\n":                                     "javascript",
+		"{\"a\": 1, \"b\": [2, 3]}\n":                                           "json",
+		"hello world just some text":                                          "text",
+		"":                                                                    "",
+		"fn main() {\n    let x = 1;\n}\n":                                    "rust",
+		"#include <stdio.h>\nint main() { printf(\"hi\"); }\n":                "c",
+		"SELECT id, name FROM users WHERE active = 1;\n":                      "sql",
+		"title: demo\nitems:\n  - one\n  - two\n":                             "yaml",
+		"# Demo\n\nsome *markdown* text with a [link](http://x)\n":            "markdown",
+		"#!/bin/bash\nset -euo pipefail\necho hi\n":                           "bash",
+	}
+	for src, want := range cases {
+		if got := guessLang(src); got != want {
+			t.Errorf("guessLang(%q) = %q, want %q", src, got, want)
+		}
+	}
+}
+
+// TestGuessLangNewLanguages covers the languages added to the dropdown as part
+// of the enry integration (#41).
+func TestGuessLangNewLanguages(t *testing.T) {
+	cases := map[string]string{
+		"interface User {\n  name: string;\n  age: number;\n}\n":                    "typescript",
+		"<!DOCTYPE html>\n<html>\n<head><title>hi</title></head>\n</html>\n":        "html",
+		".container {\n  display: flex;\n  padding: 4px;\n}\n":                      "css",
+		"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<root><item>x</item></root>\n": "xml",
+		"<?php\nfunction hi() { echo 'x'; }\n":                                      "php",
+		"def greet(name)\n  puts \"hi #{name}\"\nend\n":                             "ruby",
+		"use strict;\nmy $x = 5;\nprint \"x is $x\\n\";\n":                          "perl",
+		"local x = 10\nfunction add(a, b)\n  return a + b\nend\n":                   "lua",
+		"FROM golang:1.22\nRUN go build -o app .\nCMD [\"./app\"]\n":                "dockerfile",
+		"[package]\nname = \"demo\"\nversion = \"0.1.0\"\n":                         "toml",
+		"[server]\nhost = 127.0.0.1\nport = 8080\n":                                 "ini",
+		"diff --git a/main.go b/main.go\n--- a/main.go\n+++ b/main.go\n@@ -1 +1 @@\n": "diff",
+	}
+	for src, want := range cases {
+		if got := guessLang(src); got != want {
+			t.Errorf("guessLang(%q) = %q, want %q", src, got, want)
+		}
+	}
+}
+
+// TestGuessLangMagicMarkers verifies enry's built-in shebang / signature
+// handling that replaced the hand-rolled magic-marker pre-checks (#41).
+func TestGuessLangMagicMarkers(t *testing.T) {
+	cases := map[string]string{
+		"#!/usr/bin/env node\nconsole.log('hi');\n":             "javascript",
+		"#!/usr/bin/env python3\nimport sys\nprint(sys.argv)\n": "python",
+		"#!/usr/bin/python\nprint('x')\n":                       "python",
+		"#!/bin/bash\nset -euo pipefail\necho hi\n":             "bash",
+		"#!/bin/sh\necho hi\n":                                  "bash",
+		"<?php\necho 'x';\n":                                    "php",
+		"<!DOCTYPE html>\n<html><body></body></html>":           "html",
+		"FROM alpine:3.19\nCOPY app /app\n":                     "dockerfile",
+		"FROM ubuntu:24.04\nRUN apt-get update\n":               "dockerfile",
+		"diff --git a/x.txt b/x.txt\nindex 123..456 100644\n":   "diff",
+		"--- a/config.yml\n+++ b/config.yml\n@@ -1,2 +1,3 @@\n": "diff",
+	}
+	for src, want := range cases {
+		if got := guessLang(src); got != want {
+			t.Errorf("guessLang(%q) = %q, want %q", src, got, want)
+		}
+	}
+}
+
+// TestGuessLangCanonical verifies enry display names are mapped/lowercased to
+// our stored ids.
+func TestGuessLangCanonical(t *testing.T) {
+	if got := guessLang("FROM debian:12\nCMD [\"sh\"]\n"); got != "dockerfile" {
+		t.Errorf("Dockerfile canonical mapping failed: got %q", got)
+	}
+	if got := guessLang("#!/bin/sh\necho hi\n"); got != "bash" {
+		t.Errorf("Shell canonical mapping failed: got %q", got)
+	}
+	// uncurated languages still come back lowercase
+	if got := guessLang("<h1>{{.Name}}</h1>\n"); got != strings.ToLower(got) {
+		t.Errorf("expected lowercase output, got %q", got)
+	}
+}

highlight.go

@@ -0,0 +1,150 @@
+package main
+
+import (
+	"html"
+	"regexp"
+	"strings"
+)
+
+// Minimal regex-based syntax highlighter for the paste view (#1).
+// Server-side, no external dependencies. Tokens: comments, strings,
+// numbers, keywords. Output is HTML with span classes styled in app.css.
+// Highlighting is applied per line so the gutter stays line-aligned.
+
+type hlLang struct {
+	keywords  map[string]bool
+	lineComps []string // line comment prefixes
+	blockCom  [2]string
+}
+
+var hlLangs = map[string]hlLang{
+	"go": {
+		keywords: set("break case chan const continue default defer else fallthrough for func go goto if import interface map package range return select struct switch type var nil true false string int int64 int32 uint byte rune bool float64 float32 error make new len cap append panic recover"),
+		lineComps: []string{"//"},
+		blockCom: [2]string{"/*", "*/"},
+	},
+	"python": {
+		keywords: set("and as assert async await break class continue def del elif else except False finally for from global if import in is lambda None nonlocal not or pass raise return True try while with yield self print len range str int float list dict set tuple open"),
+		lineComps: []string{"#"},
+	},
+	"javascript": {
+		keywords: set("async await break case catch class const continue debugger default delete do else export extends finally for function if import in instanceof let new null of return static super switch this throw true false try typeof undefined var void while with yield console log document window Math JSON Array Object String Number Boolean Promise"),
+		lineComps: []string{"//"},
+		blockCom: [2]string{"/*", "*/"},
+	},
+	"json": {
+		keywords: set("true false null"),
+	},
+	"bash": {
+		keywords: set("if then else elif fi for while do done case esac function return exit local export echo cd ls grep awk sed cat curl sudo apt git make echo read shift set unset trap source alias printf test rm mv cp mkdir chmod chown"),
+		lineComps: []string{"#"},
+	},
+	"sql": {
+		keywords: set("SELECT FROM WHERE INSERT INTO VALUES UPDATE SET DELETE CREATE TABLE DROP ALTER INDEX JOIN LEFT RIGHT INNER OUTER ON GROUP BY ORDER HAVING LIMIT OFFSET AND OR NOT NULL IS IN AS DISTINCT UNION ALL PRIMARY KEY FOREIGN REFERENCES DEFAULT UNIQUE CHECK VIEW WITH RETURNING EXISTS CASE WHEN THEN ELSE END COUNT SUM AVG MIN MAX"),
+		lineComps: []string{"--"},
+		blockCom: [2]string{"/*", "*/"},
+	},
+}
+
+// aliases from the language dropdown / guesser
+var hlAliases = map[string]string{
+	"py": "python", "python3": "python",
+	"js": "javascript", "node": "javascript", "typescript": "javascript", "ts": "javascript",
+	"sh": "bash", "shell": "bash", "zsh": "bash",
+	"golang": "go",
+	"c": "go", "cpp": "go", "c++": "go", "java": "go", "rust": "go", "rs": "go",
+	// C-family shares the same token rules as Go for highlighting purposes
+}
+
+func set(words string) map[string]bool {
+	m := make(map[string]bool)
+	for _, w := range strings.Fields(words) {
+		m[w] = true
+	}
+	return m
+}
+
+func resolveLang(lang string) (string, hlLang, bool) {
+	l := strings.ToLower(strings.TrimSpace(lang))
+	if l == "" || l == "text" || l == "markdown" || l == "yaml" {
+		return "", hlLang{}, false
+	}
+	if l == "yml" {
+		return "", hlLang{}, false
+	}
+	if g, ok := hlAliases[l]; ok {
+		if h, ok2 := hlLangs[g]; ok2 {
+			return g, h, true
+		}
+		return "", hlLang{}, false
+	}
+	h, ok := hlLangs[l]
+	return l, h, ok
+}
+
+var hlTokenRe = regexp.MustCompile(`("(?:[^"\\]|\\.)*"?|'(?:[^'\\]|\\.)*'?|` + "`" + `[^` + "`" + `]*` + "`" + `?|//[^\n]*|--[^\n]*|#[^\n]*|/\*.*?(?:\*/|$)|\b(?:[0-9]+\.?[0-9]*|0x[0-9a-fA-F]+)\b|[A-Za-z_][A-Za-z0-9_]*)`)
+
+func highlightLine(line string, h hlLang, lang string) string {
+	var b strings.Builder
+	rest := line
+	// strip a trailing block-comment opener handled below; regex covers it
+	for {
+		loc := hlTokenRe.FindStringIndex(rest)
+		if loc == nil {
+			b.WriteString(html.EscapeString(rest))
+			break
+		}
+		b.WriteString(html.EscapeString(rest[:loc[0]]))
+		tok := rest[loc[0]:loc[1]]
+		cls := ""
+		switch {
+		case strings.HasPrefix(tok, "//") || strings.HasPrefix(tok, "#") ||
+			strings.HasPrefix(tok, "--") || strings.HasPrefix(tok, "/*"):
+			// '#/--' are comments only in langs that use them
+			if (strings.HasPrefix(tok, "#") && !containsStr(h.lineComps, "#")) ||
+				(strings.HasPrefix(tok, "--") && !containsStr(h.lineComps, "--")) {
+				cls = ""
+			} else {
+				cls = "tok-com"
+			}
+		case strings.HasPrefix(tok, "\"") || strings.HasPrefix(tok, "'") || strings.HasPrefix(tok, "`"):
+			cls = "tok-str"
+		case tok[0] >= '0' && tok[0] <= '9':
+			cls = "tok-num"
+		case h.keywords[tok]:
+			cls = "tok-kw"
+		}
+		if cls != "" {
+			b.WriteString(`<span class="` + cls + `">` + html.EscapeString(tok) + `</span>`)
+		} else {
+			b.WriteString(html.EscapeString(tok))
+		}
+		rest = rest[loc[1]:]
+	}
+	return b.String()
+}
+
+func containsStr(list []string, s string) bool {
+	for _, v := range list {
+		if v == s {
+			return true
+		}
+	}
+	return false
+}
+
+// highlightCode returns HTML with highlighting spans; safe because all
+// non-token text is html-escaped.
+func highlightCode(content, lang string) string {
+	l, h, ok := resolveLang(lang)
+	_ = l
+	if !ok {
+		return html.EscapeString(content)
+	}
+	lines := strings.Split(content, "\n")
+	out := make([]string, len(lines))
+	for i, line := range lines {
+		out[i] = highlightLine(line, h, lang)
+	}
+	return strings.Join(out, "\n")
+}

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"database/sql"
 	"embed"
 	"encoding/json"
@@ -23,6 +24,7 @@ var webFS embed.FS
 
 const (
 	softDeleteGraceDays = 7
+	customSlugReservationDays = 30
 )
 
 type Config struct {
@@ -42,11 +44,14 @@ type Paste struct {
 	Password    *string `json:"password,omitempty"`
 	ExpiresIn   *string `json:"expires_in,omitempty"`
 	BurnAfterRead bool  `json:"burn_after_read,omitempty"`
+	BurnAfterReads *int `json:"burn_after_reads,omitempty"` // #49: readable N times (default 1)
 	Visibility  string  `json:"visibility"`
 	CanID       *string `json:"can_id,omitempty"`
 	CreatedAt   int64   `json:"created_at"`
 	DeletedAt   *int64  `json:"deleted_at,omitempty"`
 	ExpiresAt   *int64  `json:"expires_at,omitempty"`
+	ViewerID    string  `json:"-"` // set from vwr cookie server-side (#37)
+	readsLimit  *int64  // #49: resolved read budget, not serialized
 	ViewCount   int     `json:"view_count"`
 	DeletionToken string `json:"-"`
 }
@@ -61,6 +66,8 @@ type PasteRow struct {
 	PasswordHash  sql.NullString
 	ExpiresAt     sql.NullInt64
 	BurnAfterRead bool
+	ReadsLimit    sql.NullInt64
+	ReadsUsed     int
 	Visibility    string
 	CanID         sql.NullString
 	CreatedAt     int64
@@ -68,6 +75,7 @@ type PasteRow struct {
 	ViewCount     int
 	Size          int
 	DeletionToken sql.NullString
+	ViewerID      sql.NullString
 }
 
 type CanRow struct {
@@ -130,6 +138,15 @@ func (s *Store) migrate() error {
 	);
 	`)
 	s.db.Exec(`ALTER TABLE pastes ADD COLUMN deletion_token TEXT`) // ignore if exists
+	s.db.Exec(`ALTER TABLE pastes ADD COLUMN viewer_id TEXT`)     // ignore if exists (#37)
+	s.db.Exec(`ALTER TABLE pastes ADD COLUMN reads_limit INTEGER`)          // ignore if exists (#49)
+	s.db.Exec(`ALTER TABLE pastes ADD COLUMN reads_used INTEGER DEFAULT 0`) // ignore if exists (#49)
+	s.db.Exec(`CREATE TABLE IF NOT EXISTS paste_views (
+		paste_id    TEXT NOT NULL,
+		viewer_id   TEXT NOT NULL,
+		last_viewed INTEGER NOT NULL,
+		PRIMARY KEY (paste_id, viewer_id)
+	)`) // #49: per-viewer read dedupe window
 	return err
 }
 
@@ -187,6 +204,15 @@ func (s *Store) CreatePaste(p *Paste) (*Paste, error) {
 		}
 	}
 
+	// #49: burn-after-read pastes carry a read budget (default 1 read)
+	if p.BurnAfterRead {
+		limit := int64(1)
+		if p.BurnAfterReads != nil && *p.BurnAfterReads > 0 {
+			limit = int64(*p.BurnAfterReads)
+		}
+		p.readsLimit = &limit
+	}
+
 	visibility := p.Visibility
 	if visibility == "" {
 		visibility = "public"
@@ -206,9 +232,9 @@ func (s *Store) CreatePaste(p *Paste) (*Paste, error) {
 	}
 	p.DeletionToken = genDeletionToken()
 	_, err := s.db.Exec(`INSERT INTO pastes
-		(id, custom_slug, content, content_type, language, title, password_hash, expires_at, burn_after_read, visibility, created_at, deletion_token)
+		(id, custom_slug, content, content_type, language, title, password_hash, expires_at, burn_after_read, visibility, created_at, deletion_token, viewer_id, reads_limit)
-		VALUES (?,?,?,?,?,?,?,?,?,?,?,?)`,
+		VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?)`,
-		id, slugVal, p.Content, contentType, p.Language, p.Title, pwHash, expiresAt, boolToInt(p.BurnAfterRead), visibility, now, p.DeletionToken)
+		id, slugVal, p.Content, contentType, p.Language, p.Title, pwHash, expiresAt, boolToInt(p.BurnAfterRead), visibility, now, p.DeletionToken, p.ViewerID, p.readsLimit)
 	if err != nil {
 		return nil, err
 	}
@@ -220,10 +246,10 @@ func (s *Store) CreatePaste(p *Paste) (*Paste, error) {
 }
 
 func (s *Store) GetPaste(idOrSlug string) (*PasteRow, error) {
-	row := s.db.QueryRow(`SELECT id, custom_slug, content, content_type, language, title, password_hash, expires_at, burn_after_read, visibility, can_id, created_at, deleted_at, view_count, deletion_token
+	row := s.db.QueryRow(`SELECT id, custom_slug, content, content_type, language, title, password_hash, expires_at, burn_after_read, visibility, can_id, created_at, deleted_at, view_count, deletion_token, viewer_id, reads_limit, COALESCE(reads_used, 0)
 		FROM pastes WHERE (id = ? OR custom_slug = ?) AND deleted_at IS NULL`, idOrSlug, idOrSlug)
 	var r PasteRow
-	err := row.Scan(&r.ID, &r.CustomSlug, &r.Content, &r.ContentType, &r.Language, &r.Title, &r.PasswordHash, &r.ExpiresAt, &r.BurnAfterRead, &r.Visibility, &r.CanID, &r.CreatedAt, &r.DeletedAt, &r.ViewCount, &r.DeletionToken)
+	err := row.Scan(&r.ID, &r.CustomSlug, &r.Content, &r.ContentType, &r.Language, &r.Title, &r.PasswordHash, &r.ExpiresAt, &r.BurnAfterRead, &r.Visibility, &r.CanID, &r.CreatedAt, &r.DeletedAt, &r.ViewCount, &r.DeletionToken, &r.ViewerID, &r.ReadsLimit, &r.ReadsUsed)
 	if err == sql.ErrNoRows {
 		return nil, nil
 	}
@@ -255,6 +281,49 @@ func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
 	return out, total, nil
 }
 
+// ListMine lists pastes created from the given viewer id (browser cookie), newest first.
+func (s *Store) ListMine(viewerID string, limit, offset int) ([]PasteRow, int, error) {
+	rows, err := s.db.Query(`SELECT id, custom_slug, language, title, visibility, created_at, view_count, LENGTH(content)
+		FROM pastes
+		WHERE viewer_id = ? AND deleted_at IS NULL AND can_id IS NULL AND (expires_at IS NULL OR expires_at > ?)
+		ORDER BY created_at DESC LIMIT ? OFFSET ?`, viewerID, time.Now().Unix(), limit, offset)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+	var out []PasteRow
+	for rows.Next() {
+		var r PasteRow
+		var cs, lang, title sql.NullString
+		if err := rows.Scan(&r.ID, &cs, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size); err != nil {
+			return nil, 0, err
+		}
+		r.CustomSlug, r.Language, r.Title = cs, lang, title
+		out = append(out, r)
+	}
+	var total int
+	s.db.QueryRow(`SELECT COUNT(*) FROM pastes
+		WHERE viewer_id = ? AND deleted_at IS NULL AND can_id IS NULL AND (expires_at IS NULL OR expires_at > ?)`,
+		viewerID, time.Now().Unix()).Scan(&total)
+	return out, total, nil
+}
+
+// MineOwner returns the stored viewer_id for a paste, or "" if none.
+func (s *Store) MineOwner(id string) (string, error) {
+	var vid sql.NullString
+	err := s.db.QueryRow(`SELECT viewer_id FROM pastes WHERE id = ? AND deleted_at IS NULL`, id).Scan(&vid)
+	if err == sql.ErrNoRows {
+		return "", nil
+	}
+	if err != nil {
+		return "", err
+	}
+	if !vid.Valid {
+		return "", nil
+	}
+	return vid.String, nil
+}
+
 func (s *Store) SoftDelete(id string) error {
 	_, err := s.db.Exec(`UPDATE pastes SET deleted_at=? WHERE id=? AND deleted_at IS NULL`, time.Now().Unix(), id)
 	return err
@@ -272,11 +341,34 @@ func (s *Store) SweepExpired() {
 	s.db.Exec(`DELETE FROM pastes WHERE deleted_at IS NOT NULL AND deleted_at < ?`, grace)
 }
 
+// ReleaseCustomSlugs frees custom URLs so they can be reused:
+//   - pastes whose expires_at has passed (expired or soft-deleted/expired),
+//   - pastes created more than 30 days ago (custom URLs are a reservation, not permanent).
+//
+// It returns the number of pastes whose custom_slug was released.
+func (s *Store) ReleaseCustomSlugs() (int64, error) {
+	now := time.Now().Unix()
+	res, err := s.db.Exec(`UPDATE pastes SET custom_slug = NULL
+		WHERE custom_slug IS NOT NULL
+		  AND (expires_at IS NOT NULL AND expires_at > 0 AND expires_at < ?
+		   OR created_at < ?)`,
+		now, now-customSlugReservationDays*86400)
+	if err != nil {
+		return 0, err
+	}
+	n, _ := res.RowsAffected()
+	if n > 0 {
+		log.Printf("released %d custom slug(s)", n)
+	}
+	return n, nil
+}
+
 func (s *Store) StartSweeper(every time.Duration) {
 	go func() {
 		t := time.NewTicker(every)
 		for range t.C {
 			s.SweepExpired()
+			s.ReleaseCustomSlugs()
 		}
 	}()
 }
@@ -319,14 +411,17 @@ func (a *apiServer) routes() http.Handler {
 	r := chi.NewRouter()
 	r.Use(middleware.Recoverer)
 	r.Use(middleware.Timeout(30 * time.Second))
+	r.Use(viewerCookieMiddleware)
 
 	// API
 	r.Route("/api", func(r chi.Router) {
 		r.Post("/pastes", a.handleCreatePaste)
 		r.Get("/pastes/{id}", a.handleGetPaste)
 		r.Delete("/pastes/{id}", a.handleDeletePaste)
+		r.Get("/mine", a.handleListMine)
 		r.Delete("/pastes/{id}/redeem", a.handleRedeemDeletion)
 		r.Get("/public", a.handleListPublic)
+		r.Post("/guess-language", a.handleGuessLang)
 		r.Post("/pastes/can", a.handleCreateCan)
 		r.Get("/cans/{id}", a.handleGetCan)
 		r.Get("/cans/{id}/items/{item}", a.handleCanItem)
@@ -342,10 +437,13 @@ func (a *apiServer) routes() http.Handler {
 	r.Get("/", http.RedirectHandler("/history", http.StatusFound).ServeHTTP)
 	r.Get("/new", a.handleNewPage)
 	r.Get("/history", a.handleHistoryPage)
+	r.Get("/settings", a.handleSettingsPage)
+	r.Get("/mine", a.handleMinePage)
 	r.Handle("/static/*", staticHandler())
 	r.Get("/unlock/{id}", a.handlePasteView)
 	r.Post("/unlock/{id}", a.handlePasteView)
 	r.Get("/{id}", a.handlePasteView)
+	r.Post("/{id}", a.handlePasteView)
 
 	r.NotFound(func(w http.ResponseWriter, r *http.Request) {
 		writeErr(w, 404, "not found")
@@ -353,7 +451,51 @@ func (a *apiServer) routes() http.Handler {
 	return r
 }
 
+// viewerCookieMiddleware ensures every request carries an anonymous browser id
+// cookie ("vwr"); sets one on the response if absent. Used by /mine (#37, #49).
+func viewerCookieMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if c, err := r.Cookie("vwr"); err != nil || c.Value == "" {
+			id := genSlug(16)
+			http.SetCookie(w, &http.Cookie{
+				Name: "vwr", Value: id, Path: "/",
+				MaxAge: 31536000, HttpOnly: true, SameSite: http.SameSiteLaxMode,
+			})
+			r.AddCookie(&http.Cookie{Name: "vwr", Value: id})
+			// remember that this cookie was minted here, not sent by the client
+			r = r.WithContext(context.WithValue(r.Context(), vwrMintedKey, true))
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
+type vwrMintedKeyType struct{}
+
+var vwrMintedKey vwrMintedKeyType
+
+func currentViewerID(r *http.Request) string {
+	if c, err := r.Cookie("vwr"); err == nil {
+		return c.Value
+	}
+	return ""
+}
+
+// viewerSentCookie reports whether the client itself sent a vwr cookie
+// (as opposed to the middleware minting one for this request).
+func viewerSentCookie(r *http.Request) bool {
+	if _, err := r.Cookie("vwr"); err != nil {
+		return false
+	}
+	_, minted := r.Context().Value(vwrMintedKey).(bool)
+	return !minted
+}
+
 func (a *apiServer) handleCreatePaste(w http.ResponseWriter, r *http.Request) {
+	setRateLimitHeaders(w, 1, 5)
+	if !rateLimitCreate(r) {
+		writeRateLimited(w, 1)
+		return
+	}
 	var p Paste
 	if err := json.NewDecoder(r.Body).Decode(&p); err != nil {
 		writeErr(w, 400, "invalid json body")
@@ -367,6 +509,7 @@ func (a *apiServer) handleCreatePaste(w http.ResponseWriter, r *http.Request) {
 		writeErr(w, 413, fmt.Sprintf("content exceeds max %d bytes", a.cfg.MaxTextBytes))
 		return
 	}
+	p.ViewerID = currentViewerID(r)
 	created, err := a.store.CreatePaste(&p)
 	if err != nil {
 		writeErr(w, 400, err.Error())
@@ -380,6 +523,7 @@ func (a *apiServer) handleCreatePaste(w http.ResponseWriter, r *http.Request) {
 		"api_url":   "/api/pastes/" + created.ID,
 		"expires_at": created.ExpiresAt,
 		"created_at": created.CreatedAt,
+		"rate_limit": map[string]int{"create_per_sec": 1, "burst": 5},
 	})
 }
 
@@ -398,6 +542,10 @@ func (a *apiServer) handleGetPaste(w http.ResponseWriter, r *http.Request) {
 		writeErr(w, 404, "paste expired")
 		return
 	}
+	if row.burned() { // #49: read budget exhausted
+		writeErr(w, 404, "paste not found")
+		return
+	}
 	if row.PasswordHash.Valid {
 		// require password via header or query
 		pw := r.Header.Get("X-Paste-Password")
@@ -415,11 +563,12 @@ func (a *apiServer) handleGetPaste(w http.ResponseWriter, r *http.Request) {
 		}
 		return nil
 	}
-	a.store.maybeBurn(row)
+	rem, _ := a.store.registerRead(row, currentViewerID(r)) // #49 (also covers legacy burn)
 	writeJSON(w, 200, map[string]any{
 		"id": row.ID, "content": row.Content, "content_type": row.ContentType,
 		"language": nullPtr(row.Language), "title": nullPtr(row.Title), "created_at": row.CreatedAt,
 		"view_count": row.ViewCount, "visibility": row.Visibility,
+		"reads_remaining": rem,
 	})
 }
 
@@ -430,6 +579,14 @@ func (a *apiServer) handleDeletePaste(w http.ResponseWriter, r *http.Request) {
 		writeErr(w, 404, "paste not found")
 		return
 	}
+	// viewer-cookie delete enforcement (#37): only the browser that created
+	// the paste (matching vwr) may delete it via this endpoint. Requests with
+	// no client-sent vwr cookie (plain API clients) are unaffected.
+	vid := currentViewerID(r)
+	if vid != "" && viewerSentCookie(r) && row.ViewerID.Valid && row.ViewerID.String != "" && row.ViewerID.String != vid {
+		writeErr(w, 403, "not your paste")
+		return
+	}
 	if err := a.store.SoftDelete(row.ID); err != nil {
 		writeErr(w, 500, "db error")
 		return
@@ -437,6 +594,35 @@ func (a *apiServer) handleDeletePaste(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, 200, map[string]string{"status": "soft-deleted"})
 }
 
+// handleListMine serves /api/mine: pastes created from this browser (#37).
+func (a *apiServer) handleListMine(w http.ResponseWriter, r *http.Request) {
+	vid := currentViewerID(r)
+	if vid == "" {
+		writeJSON(w, 200, map[string]any{"total": 0, "items": []any{}})
+		return
+	}
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	if limit <= 0 || limit > 100 {
+		limit = 50
+	}
+	offset, _ := strconv.Atoi(r.URL.Query().Get("offset"))
+	rows, total, err := a.store.ListMine(vid, limit, offset)
+	if err != nil {
+		writeErr(w, 500, "db error")
+		return
+	}
+	items := make([]map[string]any, 0, len(rows))
+	for _, row := range rows {
+		lang, title := nullStrPtr(row.Language), nullStrPtr(row.Title)
+		items = append(items, map[string]any{
+			"id": row.ID, "title": title, "language": lang,
+			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
+			"custom_slug": nullStrPtr(row.CustomSlug), "visibility": row.Visibility,
+		})
+	}
+	writeJSON(w, 200, map[string]any{"total": total, "limit": limit, "offset": offset, "items": items})
+}
+
 func (a *apiServer) handleListPublic(w http.ResponseWriter, r *http.Request) {
 	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
 	if limit <= 0 || limit > 100 {
@@ -454,6 +640,7 @@ func (a *apiServer) handleListPublic(w http.ResponseWriter, r *http.Request) {
 		items = append(items, map[string]any{
 			"id": row.ID, "title": title, "language": lang,
 			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
+			"custom_slug": nullStrPtr(row.CustomSlug),
 		})
 	}
 	writeJSON(w, 200, map[string]any{"total": total, "limit": limit, "offset": offset, "items": items})
@@ -474,6 +661,13 @@ func (a *apiServer) handleRaw(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "password required", 401)
 		return
 	}
+	if row.burned() { // #49: read budget exhausted
+		http.Error(w, "not found", 404)
+		return
+	}
+	// #49 decision: raw reads count against the read budget too, with the
+	// same per-viewer 15-minute dedupe window as page views.
+	a.store.registerRead(row, currentViewerID(r))
 	w.Header().Set("Content-Type", row.ContentType)
 	a.store.IncrementViews(row.ID)
 	w.Write([]byte(row.Content))

main_test.go

@@ -11,6 +11,7 @@ import (
 
 func testServer(t *testing.T) *apiServer {
 	t.Helper()
+	globalLimiter = newLimiter() // fresh buckets per test
 	store, err := OpenStore(":memory:")
 	if err != nil {
 		t.Fatal(err)

mine_test.go

@@ -0,0 +1,109 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+// doReq performs a request against the router, carrying the given cookies,
+// and returns the recorder (so Set-Cookie from the viewer middleware is visible).
+func doReq(t *testing.T, h http.Handler, method, path, cookie string, body string) *httptest.ResponseRecorder {
+	t.Helper()
+	req := httptest.NewRequest(method, path, strings.NewReader(body))
+	if body != "" {
+		req.Header.Set("Content-Type", "application/json")
+	}
+	if cookie != "" {
+		req.AddCookie(&http.Cookie{Name: "vwr", Value: cookie})
+	}
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	return rec
+}
+
+// viewerCookieFor performs a request without the vwr cookie and extracts the
+// one the viewer middleware sets in the response.
+func viewerCookieFor(t *testing.T, h http.Handler, path string) string {
+	t.Helper()
+	rec := doReq(t, h, "GET", path, "", "")
+	for _, c := range rec.Result().Cookies() {
+		if c.Name == "vwr" {
+			return c.Value
+		}
+	}
+	t.Fatal("vwr cookie not set")
+	return ""
+}
+
+func TestMineCreateListDelete(t *testing.T) {
+	globalLimiter = newLimiter() // fresh rate-limit buckets
+	webUI, err := NewWebUI()
+	if err != nil {
+		t.Fatal(err)
+	}
+	webUIInstance = webUI
+	store, err := OpenStore(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	a := &apiServer{store: store, cfg: Config{MaxTextBytes: 5 * 1024 * 1024}}
+	h := a.routes()
+
+	alice := viewerCookieFor(t, h, "/history")
+	if alice == "" {
+		t.Fatal("no viewer cookie issued")
+	}
+
+	// create with alice's cookie -> stored viewer id
+	rec := doReq(t, h, "POST", "/api/pastes", alice, `{"content":"hello mine"}`)
+	if rec.Code != 201 {
+		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
+	}
+	var created struct{ ID string }
+	json.Unmarshal(rec.Body.Bytes(), &created)
+	if created.ID == "" {
+		t.Fatal("no id returned")
+	}
+
+	// owner sees it in /api/mine
+	rec = doReq(t, h, "GET", "/api/mine", alice, "")
+	if rec.Code != 200 {
+		t.Fatalf("mine: %d", rec.Code)
+	}
+	var list struct {
+		Total int `json:"total"`
+		Items []struct{ ID string `json:"id"` } `json:"items"`
+	}
+	json.Unmarshal(rec.Body.Bytes(), &list)
+	if list.Total != 1 || len(list.Items) != 1 || list.Items[0].ID != created.ID {
+		t.Fatalf("mine list: total=%d items=%v", list.Total, list.Items)
+	}
+
+	// a different browser's cookie does NOT see it
+	bob := viewerCookieFor(t, h, "/history")
+	rec = doReq(t, h, "GET", "/api/mine", bob, "")
+	json.Unmarshal(rec.Body.Bytes(), &list)
+	if list.Total != 0 {
+		t.Fatalf("other browser sees %d pastes, want 0", list.Total)
+	}
+
+	// delete enforcement: bob cannot delete alice's paste
+	rec = doReq(t, h, "DELETE", "/api/pastes/"+created.ID, bob, "")
+	if rec.Code != 403 {
+		t.Fatalf("bob delete: %d, want 403", rec.Code)
+	}
+
+	// owner can delete
+	rec = doReq(t, h, "DELETE", "/api/pastes/"+created.ID, alice, "")
+	if rec.Code != 200 {
+		t.Fatalf("alice delete: %d", rec.Code)
+	}
+	rec = doReq(t, h, "GET", "/api/mine", alice, "")
+	json.Unmarshal(rec.Body.Bytes(), &list)
+	if list.Total != 0 {
+		t.Fatalf("after delete, mine total=%d, want 0", list.Total)
+	}
+}

ratelimit.go

@@ -0,0 +1,87 @@
+package main
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+// Per-IP token bucket rate limiting (#2). Goroutine-safe via mutex.
+
+type bucket struct {
+	tokens float64
+	last   time.Time
+	rate   float64 // tokens per second
+	burst  float64
+}
+
+type limiter struct {
+	mu      sync.Mutex
+	buckets map[string]*bucket
+}
+
+func newLimiter() *limiter {
+	return &limiter{buckets: make(map[string]*bucket)}
+}
+
+func (l *limiter) allow(key string, rate, burst float64) bool {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	now := time.Now()
+	b, ok := l.buckets[key]
+	if !ok {
+		b = &bucket{tokens: burst, last: now, rate: rate, burst: burst}
+		l.buckets[key] = b
+	}
+	elapsed := now.Sub(b.last).Seconds()
+	b.tokens += elapsed * b.rate
+	if b.tokens > b.burst {
+		b.tokens = b.burst
+	}
+	b.last = now
+	if b.tokens < 1 {
+		return false
+	}
+	b.tokens--
+	return true
+}
+
+// clientIP extracts the request IP (no reverse proxy header by default).
+func clientIP(r *http.Request) string {
+	host := r.RemoteAddr
+	if i := strings.LastIndex(host, ":"); i > 0 {
+		host = host[:i]
+	}
+	return host
+}
+
+var globalLimiter = newLimiter()
+
+// rateLimitCreate: 1 req/sec refill, burst 5, per IP.
+func rateLimitCreate(r *http.Request) bool {
+	return globalLimiter.allow("create:"+clientIP(r), 1, 5)
+}
+
+// rateLimitGuess: 1 req/sec refill, burst 5, per IP.
+func rateLimitGuess(r *http.Request) bool {
+	return globalLimiter.allow("guess:"+clientIP(r), 1, 5)
+}
+
+// rateLimitUnlock: 5 per minute per IP+paste.
+func rateLimitUnlock(id string, r *http.Request) bool {
+	return globalLimiter.allow("unlock:"+id+":"+clientIP(r), 5.0/60.0, 5)
+}
+
+// writeRateLimited responds 429 with Retry-After based on refill rate.
+func writeRateLimited(w http.ResponseWriter, retryAfterSecs int) {
+	w.Header().Set("Retry-After", strconv.Itoa(retryAfterSecs))
+	writeErr(w, 429, "rate limit exceeded")
+}
+
+// setRateLimitHeaders sets informational X-RateLimit headers for create/guess.
+func setRateLimitHeaders(w http.ResponseWriter, limit, burst int) {
+	w.Header().Set("X-RateLimit-Limit", strconv.Itoa(limit))
+	w.Header().Set("X-RateLimit-Burst", strconv.Itoa(burst))
+}

ratelimit_test.go

@@ -0,0 +1,230 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+)
+
+func newTestServer(t *testing.T) *apiServer {
+	t.Helper()
+	globalLimiter = newLimiter() // fresh buckets per test
+	store, err := OpenStore(t.TempDir() + "/test.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if webUIInstance == nil {
+		ui, err := NewWebUI()
+		if err != nil {
+			t.Fatal(err)
+		}
+		webUIInstance = ui
+	}
+	return &apiServer{store: store, cfg: Config{MaxTextBytes: 1024 * 1024}}
+}
+
+func postJSON(t *testing.T, h http.Handler, path string, body any) *httptest.ResponseRecorder {
+	t.Helper()
+	b, _ := json.Marshal(body)
+	req := httptest.NewRequest("POST", path, bytes.NewReader(b))
+	req.Header.Set("Content-Type", "application/json")
+	rr := httptest.NewRecorder()
+	h.ServeHTTP(rr, req)
+	return rr
+}
+
+// TestRateLimitCreateBurst: burst of 5 creates allowed, then 429.
+func TestRateLimitCreateBurst(t *testing.T) {
+	srv := newTestServer(t)
+	h := srv.routes()
+	// unique IP per test run so tests don't share buckets
+	reqIP := "10.9.9.1:1234"
+	for i := 0; i < 5; i++ {
+		req := httptest.NewRequest("POST", "/api/pastes", bytes.NewReader([]byte(`{"content":"hi"}`)))
+		req.RemoteAddr = reqIP
+		rr := httptest.NewRecorder()
+		h.ServeHTTP(rr, req)
+		if rr.Code != 201 {
+			t.Fatalf("req %d: want 201, got %d: %s", i, rr.Code, rr.Body.String())
+		}
+	}
+	req := httptest.NewRequest("POST", "/api/pastes", bytes.NewReader([]byte(`{"content":"hi"}`)))
+	req.RemoteAddr = reqIP
+	rr := httptest.NewRecorder()
+	h.ServeHTTP(rr, req)
+	if rr.Code != 429 {
+		t.Fatalf("6th req: want 429, got %d", rr.Code)
+	}
+	if ra := rr.Header().Get("Retry-After"); ra == "" {
+		t.Fatal("missing Retry-After header")
+	}
+	if ra := rr.Header().Get("X-RateLimit-Limit"); ra == "" {
+		t.Fatal("missing X-RateLimit-Limit header")
+	}
+}
+
+// TestRateLimitRefill: after waiting >1s a token refills and a create succeeds.
+func TestRateLimitRefill(t *testing.T) {
+	srv := newTestServer(t)
+	h := srv.routes()
+	reqIP := "10.9.9.2:1234"
+	for i := 0; i < 6; i++ {
+		req := httptest.NewRequest("POST", "/api/pastes", bytes.NewReader([]byte(`{"content":"hi"}`)))
+		req.RemoteAddr = reqIP
+		rr := httptest.NewRecorder()
+		h.ServeHTTP(rr, req)
+	}
+	time.Sleep(1100 * time.Millisecond)
+	req := httptest.NewRequest("POST", "/api/pastes", bytes.NewReader([]byte(`{"content":"hi"}`)))
+	req.RemoteAddr = reqIP
+	rr := httptest.NewRecorder()
+	h.ServeHTTP(rr, req)
+	if rr.Code != 201 {
+		t.Fatalf("after refill: want 201, got %d", rr.Code)
+	}
+}
+
+// TestRateLimitGuess: guess-language endpoint is limited too.
+func TestRateLimitGuess(t *testing.T) {
+	srv := newTestServer(t)
+	h := srv.routes()
+	reqIP := "10.9.9.3:1234"
+	for i := 0; i < 6; i++ {
+		req := httptest.NewRequest("POST", "/api/guess-language", bytes.NewReader([]byte(`{"content":"def f(): pass"}`)))
+		req.RemoteAddr = reqIP
+		rr := httptest.NewRecorder()
+		h.ServeHTTP(rr, req)
+		if i < 5 && rr.Code != 200 {
+			t.Fatalf("req %d: want 200, got %d", i, rr.Code)
+		}
+	}
+	req := httptest.NewRequest("POST", "/api/guess-language", bytes.NewReader([]byte(`{"content":"x"}`)))
+	req.RemoteAddr = reqIP
+	rr := httptest.NewRecorder()
+	h.ServeHTTP(rr, req)
+	if rr.Code != 429 {
+		t.Fatalf("want 429, got %d", rr.Code)
+	}
+}
+
+// TestRateLimitUnlock: 5 unlock attempts per IP+paste per minute, then 429.
+func TestRateLimitUnlock(t *testing.T) {
+	srv := newTestServer(t)
+	h := srv.routes()
+	// create a password-protected paste
+	rr := postJSON(t, h, "/api/pastes", map[string]any{"content": "secret", "password": "pw1", "visibility": "unlisted"})
+	if rr.Code != 201 {
+		t.Fatalf("create failed: %d", rr.Code)
+	}
+	var created map[string]any
+	json.Unmarshal(rr.Body.Bytes(), &created)
+	id := created["id"].(string)
+	reqIP := "10.9.9.4:1234"
+	for i := 0; i < 6; i++ {
+		req := httptest.NewRequest("POST", "/"+id, bytes.NewReader([]byte("password=wrong")))
+		req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+		req.RemoteAddr = reqIP
+		rr2 := httptest.NewRecorder()
+		h.ServeHTTP(rr2, req)
+		if i < 5 && rr2.Code == 429 {
+			t.Fatalf("req %d: unexpected 429", i)
+		}
+	}
+	req := httptest.NewRequest("POST", "/"+id, bytes.NewReader([]byte("password=wrong")))
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.RemoteAddr = reqIP
+	rr2 := httptest.NewRecorder()
+	h.ServeHTTP(rr2, req)
+	if rr2.Code != 429 {
+		t.Fatalf("want 429, got %d", rr2.Code)
+	}
+}
+
+// TestHighlightCode basic expectations.
+func TestHighlightCode(t *testing.T) {
+	in := "func main() {\n\t// comment\n\tfmt.Println(\"hello\")\n}\n"
+	out := highlightCode(in, "go")
+	if !bytes.Contains([]byte(out), []byte(`<span class="tok-kw">func</span>`)) {
+		t.Fatalf("no keyword span: %s", out)
+	}
+	if !bytes.Contains([]byte(out), []byte(`<span class="tok-com">// comment</span>`)) {
+		t.Fatalf("no comment span: %s", out)
+	}
+	if !bytes.Contains([]byte(out), []byte(`tok-str">&#34;hello&#34;</span>`)) {
+		t.Fatalf("no string span: %s", out)
+	}
+	// unsupported language returns escaped plain text
+	plain := highlightCode("<b>x</b>", "text")
+	if plain != "&lt;b&gt;x&lt;/b&gt;" {
+		t.Fatalf("plain escaping wrong: %q", plain)
+	}
+	// line count preserved (gutter alignment)
+	if got := len(splitLines(highlightCode("a\nb\nc", "go"))); got != 3 {
+		t.Fatalf("want 3 lines, got %d", got)
+	}
+}
+
+func splitLines(s string) []string {
+	var out []string
+	start := 0
+	for i := 0; i < len(s); i++ {
+		if s[i] == '\n' {
+			out = append(out, s[start:i])
+			start = i + 1
+		}
+	}
+	out = append(out, s[start:])
+	return out
+}
+
+// TestCreatorAutoUnlock: create with password, then POST the password to
+// /{id}, then GET /{id} with the cookie shows the paste (#26).
+func TestCreatorAutoUnlock(t *testing.T) {
+	srv := newTestServer(t)
+	h := srv.routes()
+	rr := postJSON(t, h, "/api/pastes", map[string]any{"content": "secret stuff", "password": "pw2", "visibility": "unlisted"})
+	if rr.Code != 201 {
+		t.Fatalf("create failed: %d", rr.Code)
+	}
+	var created map[string]any
+	json.Unmarshal(rr.Body.Bytes(), &created)
+	id := created["id"].(string)
+
+	// locked GET shows unlock page
+	req := httptest.NewRequest("GET", "/"+id, nil)
+	rr2 := httptest.NewRecorder()
+	h.ServeHTTP(rr2, req)
+	if bytes.Contains(rr2.Body.Bytes(), []byte("secret stuff")) {
+		t.Fatal("locked paste leaked content")
+	}
+
+	// unlock POST with ?next= should set cookie and redirect
+	req = httptest.NewRequest("POST", "/"+id, bytes.NewReader([]byte("password=pw2&next=/"+id+"?created=1")))
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	rr3 := httptest.NewRecorder()
+	h.ServeHTTP(rr3, req)
+	if rr3.Code != http.StatusSeeOther {
+		t.Fatalf("unlock POST: want 303, got %d", rr3.Code)
+	}
+	var cookie *http.Cookie
+	for _, c := range rr3.Result().Cookies() {
+		if c.Name == "pw_"+id {
+			cookie = c
+		}
+	}
+	if cookie == nil {
+		t.Fatal("no pw_ cookie set")
+	}
+
+	// GET with cookie shows content
+	req = httptest.NewRequest("GET", "/"+id, nil)
+	req.AddCookie(cookie)
+	rr4 := httptest.NewRecorder()
+	h.ServeHTTP(rr4, req)
+	if !bytes.Contains(rr4.Body.Bytes(), []byte("secret stuff")) {
+		t.Fatalf("cookie unlock failed: %d %s", rr4.Code, rr4.Body.String())
+	}
+}

slugrelease_test.go

@@ -0,0 +1,84 @@
+package main
+
+import (
+	"testing"
+	"time"
+)
+
+// insertPasteWithSlug creates a paste directly with a custom slug and controlled
+// created_at/expires_at, bypassing the API's timestamp handling.
+func insertPasteWithSlug(t *testing.T, s *Store, slug string, createdAt, expiresAt int64) string {
+	t.Helper()
+	id := genSlug(6)
+	_, err := s.db.Exec(`INSERT INTO pastes (id, custom_slug, content, content_type, created_at, expires_at)
+		VALUES (?, ?, ?, ?, ?, ?)`, id, slug, "x", "text/plain", createdAt, expiresAt)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return id
+}
+
+func strPtr(s string) *string { return &s }
+
+func TestReleaseSlugOnExpiredPaste(t *testing.T) {
+	s := testServer(t)
+	now := time.Now().Unix()
+	insertPasteWithSlug(t, s.store, "release-notes", now-3600, now-60)
+	if n, err := s.store.ReleaseCustomSlugs(); err != nil || n != 1 {
+		t.Fatalf("released %d err %v, want 1", n, err)
+	}
+	if taken, _ := s.store.SlugTaken("release-notes"); taken {
+		t.Fatal("slug should be released after expiry")
+	}
+	// slug must be reusable by a new paste
+	p, err := s.store.CreatePaste(&Paste{Content: "new", CustomSlug: strPtr("release-notes")})
+	if err != nil {
+		t.Fatalf("reuse slug: %v", err)
+	}
+	if p.CustomSlug == nil || *p.CustomSlug != "release-notes" {
+		t.Fatal("new paste did not claim released slug")
+	}
+}
+
+func TestReleaseSlugOnOldPaste(t *testing.T) {
+	s := testServer(t)
+	now := time.Now().Unix()
+	// created 31 days ago, no expiry -> released by 30-day reservation rule
+	insertPasteWithSlug(t, s.store, "old-url", now-31*86400, 0)
+	if n, err := s.store.ReleaseCustomSlugs(); err != nil || n != 1 {
+		t.Fatalf("released %d err %v, want 1", n, err)
+	}
+	if taken, _ := s.store.SlugTaken("old-url"); taken {
+		t.Fatal("slug should be released after 30-day reservation")
+	}
+}
+
+func TestKeepSlugOnRecentUnexpiredPaste(t *testing.T) {
+	s := testServer(t)
+	now := time.Now().Unix()
+	insertPasteWithSlug(t, s.store, "fresh-url", now-3600, now+86400)
+	insertPasteWithSlug(t, s.store, "fresh-url2", now-3600, 0)
+	if n, err := s.store.ReleaseCustomSlugs(); err != nil || n != 0 {
+		t.Fatalf("released %d err %v, want 0", n, err)
+	}
+	for _, slug := range []string{"fresh-url", "fresh-url2"} {
+		if taken, _ := s.store.SlugTaken(slug); !taken {
+			t.Fatalf("slug %q should still be held", slug)
+		}
+	}
+}
+
+func TestSweeperTickerReleasesSlugs(t *testing.T) {
+	s := testServer(t)
+	now := time.Now().Unix()
+	insertPasteWithSlug(t, s.store, "ticker-url", now-7200, now-3600)
+	s.store.StartSweeper(10 * time.Millisecond)
+	deadline := time.Now().Add(2 * time.Second)
+	for time.Now().Before(deadline) {
+		if taken, _ := s.store.SlugTaken("ticker-url"); !taken {
+			return
+		}
+		time.Sleep(10 * time.Millisecond)
+	}
+	t.Fatal("ticker did not release slug in time")
+}

web.go

@@ -66,6 +66,14 @@ func (a *apiServer) handleHistoryPage(w http.ResponseWriter, r *http.Request) {
 	renderPage(w, "history.html", map[string]any{"Page": "history"})
 }
 
+func (a *apiServer) handleSettingsPage(w http.ResponseWriter, r *http.Request) {
+	renderPage(w, "settings.html", map[string]any{"Page": "settings"})
+}
+
+func (a *apiServer) handleMinePage(w http.ResponseWriter, r *http.Request) {
+	renderPage(w, "mine.html", map[string]any{"Page": "mine"})
+}
+
 func agoString(ts int64) string {
 	s := time.Now().Unix() - ts
 	switch {
@@ -92,7 +100,7 @@ func expiryString(expiresAt int64) string {
 	}
 }
 
-func (a *apiServer) renderPaste(w http.ResponseWriter, row *PasteRow, justCreated bool, deletionToken string) {
+func (a *apiServer) renderPaste(w http.ResponseWriter, row *PasteRow, justCreated bool, deletionToken string, readsRemaining *int) {
 	lines := strings.Count(row.Content, "\n") + 1
 	gutter := ""
 	for i := 1; i <= lines; i++ {
@@ -102,22 +110,36 @@ func (a *apiServer) renderPaste(w http.ResponseWriter, row *PasteRow, justCreate
 	if row.ExpiresAt.Valid {
 		expIn = expiryString(row.ExpiresAt.Int64)
 	}
+	lang := row.Language.String
+	if lang == "" {
+		lang = "text"
+	}
+	summary := fmt.Sprintf("%s · %s · %d views · %s", lang, humanSize(len(row.Content)), row.ViewCount, agoString(row.CreatedAt))
 	data := map[string]any{
 		"Page":          "paste",
 		"ID":            row.ID,
 		"Title":         row.Title.String,
 		"Language":      row.Language.String,
-		"ContentHTML":   template.HTMLEscapeString(row.Content),
+		"StatsSummary":  summary,
+		"SizeHuman":     humanSize(len(row.Content)),
+		"HasPassword":   row.PasswordHash.Valid,
+		"BurnAfterRead": row.BurnAfterRead,
+		"CustomSlug":    row.CustomSlug.String,
+		"ContentHTML":   template.HTML(highlightCode(row.Content, row.Language.String)), // safe: highlightCode escapes all non-span text
 		"ContentAttr":   row.Content,
 		"Gutter":        strings.TrimSuffix(gutter, "\n"),
 		"LineCount":     lines,
 		"SizeBytes":     len(row.Content),
 		"CreatedAgo":    agoString(row.CreatedAt),
+		"CreatedAtUnix": row.CreatedAt,
 		"ViewCount":     row.ViewCount,
 		"Visibility":    row.Visibility,
 		"ExpiresAt":     row.ExpiresAt.Valid,
 		"ExpiresIn":     expIn,
 		"DeletionToken": deletionToken,
+		"ReadsLimit":    row.ReadsLimit.Valid,
+		"ReadsLeftN":    readsRemaining,   // *int: reads remaining after this view
+		"ReadsTotal":    int(row.ReadsLimit.Int64),
 		"JustCreated":   justCreated,
 		"Host":          "this host",
 	}
@@ -143,6 +165,10 @@ func (a *apiServer) handlePasteView(w http.ResponseWriter, r *http.Request) {
 	if row.PasswordHash.Valid {
 		// if a password was submitted via unlock form, verify and set cookie for this paste
 		if r.Method == http.MethodPost {
+			if !rateLimitUnlock(row.ID, r) {
+				writeRateLimited(w, 60)
+				return
+			}
 			r.ParseForm()
 			pw := r.FormValue("password")
 			if pw != "" && checkPassword(row.PasswordHash.String, pw) {
@@ -150,34 +176,43 @@ func (a *apiServer) handlePasteView(w http.ResponseWriter, r *http.Request) {
 					Name: "pw_" + row.ID, Value: "1", Path: "/",
 					MaxAge: 3600, HttpOnly: true, SameSite: http.SameSiteLaxMode,
 				})
-				// re-render without lock
+				// re-render without lock, or redirect if ?next= was given (#26)
-				a.renderPaste(w, row, false, "")
+				if next := r.FormValue("next"); next != "" {
+					// only allow same-origin relative paths
+					if len(next) > 0 && next[0] == '/' && !strings.HasPrefix(next, "//") {
+						http.Redirect(w, r, next, http.StatusSeeOther)
+						return
+					}
+				}
+				a.renderPaste(w, row, false, "", nil)
 				return
 			}
-			renderPage(w, "unlock.html", map[string]any{"Page": "unlock", "ID": row.ID, "Wrong": true, "CreatedAgo": agoString(row.CreatedAt)})
+			renderPage(w, "unlock.html", map[string]any{"Page": "unlock", "ID": row.ID, "Wrong": true, "CreatedAgo": agoString(row.CreatedAt), "CreatedAtUnix": row.CreatedAt})
 			return
 		}
 		// check cookie
 		c, err := r.Cookie("pw_" + row.ID)
 		if err != nil || c.Value != "1" {
-			renderPage(w, "unlock.html", map[string]any{"Page": "unlock", "ID": row.ID, "Wrong": false, "CreatedAgo": agoString(row.CreatedAt)})
+			renderPage(w, "unlock.html", map[string]any{"Page": "unlock", "ID": row.ID, "Wrong": false, "CreatedAgo": agoString(row.CreatedAt), "CreatedAtUnix": row.CreatedAt})
 			return
 		}
 	}
 
-	a.store.IncrementViews(row.ID)
 	justCreated := r.URL.Query().Get("created") == "1"
 	token := r.URL.Query().Get("token")
 	if justCreated && token != "" {
 		// one-time display of the deletion token via the created banner
 		http.SetCookie(w, &http.Cookie{Name: "tok_" + row.ID, Value: token, Path: "/", MaxAge: 60, HttpOnly: true, SameSite: http.SameSiteLaxMode})
 	}
-	// only pass the token to the template right after creation
+	// #49: burn-after-N-reads budget (per-viewer, 15-minute dedupe window).
-	if justCreated {
+	// Just-created first render does not count as a read for the creator.
-		a.renderPaste(w, row, true, token)
+	if !justCreated {
+		rem, _ := a.store.registerRead(row, currentViewerID(r))
+		a.renderPaste(w, row, false, "", rem)
 		return
 	}
-	a.renderPaste(w, row, false, "")
+	// only pass the token to the template right after creation
+	a.renderPaste(w, row, true, token, nil)
 }
 
 var _ = strconv.Itoa

web/static/app.css

@@ -3,14 +3,42 @@
   --bg: #241B30; --surface: #2D2340; --surface-2: #3A2D52;
   --muted: #7A6A9E; --muted-fg: #C0B2DE; --fg: #F2EDF8;
   --accent: #C4A8F0; --border: #42355C;
-  --radius: 14px;
+  --radius-lg: 20px; --radius: 10px; --radius-sm: 999px;
   --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
   --font-mono: ui-monospace, "JetBrains Mono", "Fira Code", monospace;
 }
+/* semantic status colors (dark preset values; light presets override below) */
+:root {
+  --ok: #9CD49C; --warn: #E8C77B; --err: #F2A3B3;
+  --on-accent: #241B30; /* text placed on accent-colored backgrounds */
+}
 [data-preset="smooth"] {
   --bg: #F6F5FA; --surface: #FFFFFF; --surface-2: #DAD7E6;
   --muted: #B5B1C9; --muted-fg: #7A7796; --fg: #2A2A36;
   --accent: #7A7796; --border: #DAD7E6;
+  --ok: #456F45; --warn: #7A5E1B; --err: #9E4054;
+  --on-accent: #F6F5FA;
+}
+[data-preset="pastel-lavender"] {
+  --bg: #e6e0f5; --surface: #f1edfa; --surface-2: #cbb8e7;
+  --muted: #a99cc9; --muted-fg: #5f5390; --fg: #3E3059;
+  --accent: #806bb8; --border: #c4b6e0;
+  --ok: #3E6B3E; --warn: #7A5E1B; --err: #9E4054;
+  --on-accent: #f1edfa;
+}
+[data-preset="pastel-peach"] {
+  --bg: #ffe0d6; --surface: #fff0ea; --surface-2: #ffc4a8;
+  --muted: #d9a08c; --muted-fg: #7a4632; --fg: #4F2318;
+  --accent: #f9826c; --border: #ffc9b5;
+  --ok: #3E6B3E; --warn: #7A5E1B; --err: #9E4054;
+  --on-accent: #4F2318;
+}
+[data-preset="pastel-cloud"] {
+  --bg: #fff0f6; --surface: #fff7fb; --surface-2: #ffc8dd;
+  --muted: #d9b9c9; --muted-fg: #7d5670; --fg: #4A3355;
+  --accent: #a2d2ff; --border: #ffccd9;
+  --ok: #3E6B3E; --warn: #7A5E1B; --err: #9E4054;
+  --on-accent: #274a6b;
 }
 
 * { box-sizing: border-box; margin: 0; padding: 0; }
@@ -21,147 +49,175 @@ body {
   line-height: 1.45;
   -webkit-font-smoothing: antialiased;
   min-height: 100vh;
-  font-size: 14px;
+  font-size: 24.2px;
 }
 .topbar {
   display: flex; align-items: center; gap: 20px;
-  padding: 0 20px; height: 52px;
+  padding: 0 22px; height: 76px;
   background: var(--surface); border-bottom: 1px solid var(--border);
 }
-.logo { font-weight: 700; font-size: 16px; letter-spacing: -0.02em; text-decoration: none; color: var(--fg); }
+.logo { font-weight: 700; font-size: 27.6px; letter-spacing: -0.02em; text-decoration: none; color: var(--fg); }
 .logo em { font-style: normal; color: var(--muted-fg); font-weight: 400; }
 .topbar nav { display: flex; gap: 4px; }
-.topbar nav a { color: var(--muted-fg); text-decoration: none; padding: 6px 12px; border-radius: 8px; font-size: 13.5px; }
+.topbar nav a { color: var(--muted-fg); text-decoration: none; padding: 6px 12px; border-radius: var(--radius); font-size: 23.2px; }
 .topbar nav a:hover { background: var(--surface-2); color: var(--fg); }
 .topbar nav a.on { background: var(--accent); color: var(--bg); }
 .topbar .spacer { flex: 1; }
-.kbd { font-family: var(--font-mono); font-size: 11px; border: 1px solid var(--border); border-radius: 5px; padding: 2px 6px; color: var(--muted-fg); }
+.kbd { font-family: var(--font-mono); font-size: 18.9px; border: 1px solid var(--border); border-radius: var(--radius); padding: 2px 6px; color: var(--muted-fg); }
 
 .float {
-  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
+  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
-  box-shadow: 0 2px 6px rgba(20,14,32,.25), 0 12px 32px rgba(20,14,32,.3);
+  box-shadow:
+    0 1px 2px rgba(0, 0, 0, .10),
+    0 2px 6px rgba(0, 0, 0, .08),
+    0 8px 24px rgba(0, 0, 0, .07);
   overflow: hidden;
 }
 
 /* new paste page */
 .deck {
   display: grid; grid-template-columns: 1fr 300px; gap: 16px;
-  padding: 16px 20px; height: calc(100vh - 52px);
+  padding: 16px 20px 20px; height: calc(100vh - 76px);
   max-width: 1400px; margin: 0 auto;
 }
 .pane-r { display: flex; flex-direction: column; gap: 16px; overflow-y: auto; padding-bottom: 4px; }
 .side-section { padding: 14px 16px; flex-shrink: 0; }
-.side-section h3 { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted-fg); margin-bottom: 10px; }
+.side-section h3 { font-size: 18.9px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted-fg); margin-bottom: 10px; }
-.pane-l { display: flex; flex-direction: column; }
+.pane-l-col { display: flex; flex-direction: column; gap: 14px; min-height: 0; }
+.pane-l-head { flex-shrink: 0; }
 .editor-head {
-  display: flex; align-items: center; gap: 12px; padding: 10px 16px;
+  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
-  border-bottom: 1px solid var(--border);
 }
 .editor-head input {
-  border: none; outline: none; background: transparent; color: var(--fg); font: inherit; font-size: 13.5px; flex: 1;
+  border: none; outline: none; background: transparent; color: var(--fg); font: inherit; font-size: 23.2px; flex: 1;
 }
 .editor-head select {
   border: 1px solid var(--border); background: var(--surface-2); color: var(--muted-fg);
-  border-radius: 7px; padding: 4px 10px; font: inherit; font-size: 12.5px; cursor: pointer;
+  border-radius: var(--radius); padding: 4px 10px; font: inherit; font-size: 21.6px; cursor: pointer;
 }
+/* shared code line metrics (#50): gutter + code must share one line box */
+:root { --code-lh: 1.7; --code-fs: 21.6px; }
+
 .editor-wrap { flex: 1; display: flex; min-height: 0; }
 .gutter {
   padding: 14px 10px; text-align: right; color: var(--muted); font-family: var(--font-mono);
-  font-size: 12.5px; line-height: 1.7; user-select: none; white-space: pre; overflow: hidden;
+  font-size: var(--code-fs); line-height: var(--code-lh); user-select: none; white-space: pre; overflow: hidden;
   border-right: 1px solid var(--border);
 }
 .editor {
-  flex: 1; padding: 14px 16px; font-family: var(--font-mono); font-size: 12.5px; line-height: 1.7;
+  flex: 1; padding: 14px 16px; font-family: var(--font-mono); font-size: 21.6px; line-height: 1.7;
   white-space: pre; outline: none; overflow: auto; border: none; background: transparent; color: var(--fg);
   resize: none; width: 100%;
 }
 .editor::placeholder { color: var(--muted); }
 .actionbar {
-  display: flex; align-items: center; gap: 14px; padding: 12px 16px;
+  display: flex; align-items: center; gap: 14px;
-  border-top: 1px solid var(--border);
+  padding: 10px 4px;
 }
+.actionbar .btn { padding: 10px 26px; }
 .btn {
   background: var(--accent); color: var(--bg); border: none; cursor: pointer;
-  padding: 8px 18px; border-radius: 8px; font: inherit; font-size: 13px; font-weight: 600;
+  padding: 8px 18px; border-radius: var(--radius); font: inherit; font-size: 22.4px; font-weight: 600;
 }
 .btn:hover { filter: brightness(1.08); }
-.hint { font-size: 12px; color: var(--muted-fg); }
+.hint { font-size: 20.7px; color: var(--muted-fg); }
 .hint b { color: var(--fg); font-weight: 550; }
 .seg { display: flex; flex-direction: column; gap: 2px; }
-.seg label { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 7px; cursor: pointer; font-size: 13px; }
+.seg label { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: var(--radius); cursor: pointer; font-size: 22.4px; }
 .seg label:hover { background: var(--surface-2); }
 .seg input { accent-color: var(--accent); }
-.toggle { display: flex; align-items: center; gap: 8px; font-size: 13px; cursor: pointer; padding: 5px 8px; border-radius: 7px; }
+.toggle { display: flex; align-items: center; gap: 8px; font-size: 22.4px; cursor: pointer; padding: 5px 8px; border-radius: var(--radius); }
 .toggle:hover { background: var(--surface-2); }
 .toggle input { accent-color: var(--accent); }
-.row { display: flex; justify-content: space-between; align-items: center; font-size: 13px; padding: 4px 0; }
+.deck .row { display: flex; justify-content: space-between; align-items: center; font-size: 22.4px; padding: 4px 0; }
 .row input[type="text"] {
-  border: 1px solid var(--border); border-radius: 7px; padding: 5px 8px; background: var(--bg);
+  border: 1px solid var(--border); border-radius: var(--radius); padding: 5px 8px; background: var(--bg);
-  color: var(--fg); font: inherit; font-size: 12.5px; width: 130px;
+  color: var(--fg); font: inherit; font-size: 21.6px; width: 130px;
 }
 .created-banner {
-  display: none; padding: 10px 16px; font-size: 13px; background: var(--surface-2);
+  display: none; padding: 10px 16px; font-size: 22.4px; background: var(--surface-2);
   border-bottom: 1px solid var(--border); word-break: break-all;
 }
 .created-banner a { color: var(--accent); }
 
 /* paste view */
 .meta-bar { display: flex; align-items: center; gap: 12px; padding: 12px 18px; flex-wrap: wrap; }
-.meta-bar h1 { font-size: 17px; font-weight: 600; }
+.meta-bar h1 { font-size: 29.2px; font-weight: 600; }
-.slug { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted-fg); background: var(--surface-2); padding: 3px 9px; border-radius: 7px; }
+.slug { font-family: var(--font-mono); font-size: 21.6px; color: var(--muted-fg); background: var(--surface-2); padding: 3px 9px; border-radius: var(--radius); }
-.tag { font-size: 11.5px; color: var(--muted-fg); border: 1px solid var(--border); border-radius: 999px; padding: 2px 9px; }
+.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; }
+.stats-pill { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
+.stats-head { display: flex; align-items: center; gap: 16px; width: 100%; background: none; border: 0; color: var(--muted-fg); font: inherit; font-size: 21.6px; padding: 14px 18px; cursor: pointer; text-align: left; }
+.stats-head:hover { color: var(--fg); background: var(--surface-2); }
+.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-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; }
 .meta-bar .spacer { flex: 1; }
-.iconbtn { border: 1px solid var(--border); background: var(--surface-2); color: var(--muted-fg); border-radius: 8px; padding: 5px 12px; font: inherit; font-size: 12.5px; cursor: pointer; text-decoration: none; }
+.iconbtn { border: 1px solid var(--border); background: var(--surface-2); color: var(--muted-fg); border-radius: var(--radius); padding: 5px 12px; font: inherit; font-size: 21.6px; cursor: pointer; text-decoration: none; }
+.iconbtn.gear { display: inline-flex; align-items: center; padding: 5px 9px; }
+.iconbtn.gear svg { width: 22px; height: 22px; }
+.settings-head { padding: 12px 18px; border-bottom: 1px solid var(--border); }
+.settings-head h1 { font-size: 29.2px; font-weight: 600; margin: 0; }
+.settings-body { padding: 16px 18px; color: var(--muted-fg); font-size: 21.6px; }
 .iconbtn:hover { color: var(--fg); border-color: var(--muted); }
 .iconbtn.danger:hover { color: #ff8fa3; border-color: #ff8fa3; }
 .code-head {
   display: flex; align-items: center; gap: 10px; padding: 8px 16px;
-  border-bottom: 1px solid var(--border); font-size: 12.5px; color: var(--muted-fg);
+  border-bottom: 1px solid var(--border); font-size: 21.6px; color: var(--muted-fg);
 }
 .code-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
 .code {
-  font-family: var(--font-mono); font-size: 13px; line-height: 1.7;
+  font-family: var(--font-mono); font-size: var(--code-fs); line-height: var(--code-lh);
   padding: 14px 0; display: flex; overflow-x: auto;
 }
 .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; }
-.footnote { display: flex; gap: 20px; padding: 10px 18px; font-size: 12px; color: var(--muted-fg); border-top: 1px solid var(--border); flex-wrap: wrap; }
+/* syntax highlight tokens (#1) */
+.tok-kw { color: #c792ea; }
+.tok-str { color: #a5e075; }
+.tok-num { color: #f78c6c; }
+.tok-com { color: #6a737d; font-style: italic; }
+.footnote { display: flex; gap: 20px; padding: 10px 18px; font-size: 20.7px; color: var(--muted-fg); border-top: 1px solid var(--border); flex-wrap: wrap; }
 
 /* history */
-.page { max-width: 860px; margin: 0 auto; padding: 20px; display: flex; flex-direction: column; gap: 16px; }
+.page { max-width: 1200px; margin: 0 auto; padding: 20px; display: flex; flex-direction: column; gap: 16px; }
 .head-row { display: flex; align-items: baseline; gap: 14px; }
-.head-row h1 { font-size: 20px; font-weight: 600; }
+.head-row h1 { font-size: 34.5px; font-weight: 600; }
 .search {
   display: flex; align-items: center; gap: 8px; background: var(--surface);
-  border: 1px solid var(--border); border-radius: 10px; padding: 8px 14px; width: 260px;
+  border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 14px; width: 260px;
 }
-.search input { border: none; outline: none; background: transparent; color: var(--fg); font: inherit; font-size: 13px; width: 100%; }
+.search input { border: none; outline: none; background: transparent; color: var(--fg); font: inherit; font-size: 22.4px; width: 100%; }
-table { width: 100%; border-collapse: collapse; font-size: 13px; table-layout: fixed; }
+table { width: 100%; border-collapse: collapse; font-size: 22.4px; table-layout: fixed; }
-th:nth-child(1), td:nth-child(1) { width: 130px; }
-th:nth-child(2), td:nth-child(2) { width: auto; }
-th:nth-child(3), td:nth-child(3) { width: 80px; }
-th:nth-child(4), td:nth-child(4) { width: 80px; }
-th:nth-child(5), td:nth-child(5) { width: 64px; }
-th:nth-child(6), td:nth-child(6) { width: 90px; }
 th {
-  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .08em;
+  text-align: left; font-size: 18.9px; text-transform: uppercase; letter-spacing: .08em;
   color: var(--muted-fg); padding: 10px 16px; border-bottom: 1px solid var(--border); font-weight: 600;
 }
-td { padding: 10px 16px; border-bottom: 1px solid var(--border); }
+td { padding: 10px 16px; border-bottom: 1px solid var(--border); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 tr:last-child td { border-bottom: none; }
+tr.row { cursor: pointer; }
 tr.row:hover td { background: var(--surface-2); }
-td a.slug { font-family: var(--font-mono); font-size: 12.5px; color: var(--fg); text-decoration: none; }
+tr.row:hover td a.slug { color: var(--accent); }
+td a.slug { font-family: var(--font-mono); font-size: 21.6px; color: var(--fg); text-decoration: none; }
 td a.slug:hover { color: var(--accent); }
-.badge { font-size: 11px; border: 1px solid var(--border); color: var(--muted-fg); border-radius: 999px; padding: 1px 8px; }
+.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; }
-.pager { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; font-size: 12.5px; color: var(--muted-fg); }
+.pager { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; font-size: 21.6px; color: var(--muted-fg); }
 .pager .pg { display: flex; gap: 6px; }
-.pager button { border: 1px solid var(--border); background: var(--surface-2); color: var(--muted-fg); border-radius: 7px; padding: 4px 11px; font: inherit; font-size: 12.5px; cursor: pointer; }
+.pager button { border: 1px solid var(--border); background: var(--surface-2); color: var(--muted-fg); border-radius: var(--radius); padding: 4px 11px; font: inherit; font-size: 21.6px; cursor: pointer; }
 .pager button:hover:not(:disabled) { color: var(--fg); border-color: var(--muted); }
 .pager button.on { background: var(--accent); color: var(--bg); border-color: var(--accent); }
 .pager button:disabled { opacity: .4; cursor: default; }
-.empty { text-align: center; padding: 40px 16px; color: var(--muted-fg); font-size: 13px; }
+.empty { text-align: center; padding: 40px 16px; color: var(--muted-fg); font-size: 22.4px; }
 
 /* unlock */
 .center { display: flex; align-items: center; justify-content: center; padding: 20px; height: calc(100vh - 52px); }
@@ -169,16 +225,234 @@ td a.slug:hover { color: var(--accent); }
 .inner { padding: 28px; text-align: center; }
 .lockring {
   width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 50%;
-  background: var(--surface-2); display: flex; align-items: center; justify-content: center; font-size: 24px;
+  background: var(--surface-2); display: flex; align-items: center; justify-content: center; font-size: 41.4px;
 }
-.inner h1 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
+.inner h1 { font-size: 29.2px; font-weight: 600; margin-bottom: 6px; }
-.inner .sub { font-size: 13px; color: var(--muted-fg); margin-bottom: 20px; }
+.inner .sub { font-size: 22.4px; color: var(--muted-fg); margin-bottom: 20px; }
 .pwinput {
-  width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 9px;
+  width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius);
-  background: var(--bg); color: var(--fg); font: inherit; font-size: 13.5px; outline: none; text-align: center;
+  background: var(--bg); color: var(--fg); font: inherit; font-size: 23.2px; outline: none; text-align: center;
   letter-spacing: .12em;
 }
 .pwinput:focus { border-color: var(--accent); }
 .center .btn { width: 100%; margin-top: 12px; }
-.err { display: none; margin-top: 12px; font-size: 12.5px; color: #ff8fa3; }
+.err { display: none; margin-top: 12px; font-size: 21.6px; color: #ff8fa3; }
-.center .foot { font-size: 12px; color: var(--muted-fg); padding: 14px; border-top: 1px solid var(--border); }
+.center .foot { font-size: 20.7px; color: var(--muted-fg); padding: 14px; border-top: 1px solid var(--border); }
+
+.btn-icon {
+  padding: 4px 8px; font-size: 24.2px; line-height: 1; overflow: visible;
+  display: inline-flex; align-items: center; justify-content: center;
+  min-width: 40px; height: 36px;
+}
+
+/* selection controls: pill-style selected states (#14) */
+.seg label, .toggle {
+  border: 1px solid transparent;
+  transition: background .12s ease, border-color .12s ease, color .12s ease;
+}
+.seg label:hover, .toggle:hover {
+  background: var(--surface-2);
+  color: var(--fg);
+}
+.seg label:has(input:checked),
+.toggle:has(input:checked) {
+  background: var(--surface-2);
+  border-color: var(--accent);
+  color: var(--fg);
+  border-radius: var(--radius-sm);
+}
+.seg label:has(input:focus-visible),
+.toggle:has(input:focus-visible) {
+  outline: 2px solid var(--accent);
+  outline-offset: 1px;
+}
+.seg input, .toggle input { accent-color: var(--accent); width: 16px; height: 16px; margin: 0; }
+
+/* toast (#19) */
+.toast {
+  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%) translateY(8px);
+  background: var(--surface-2); color: var(--fg); border: 1px solid var(--border);
+  border-radius: var(--radius-sm); padding: 6px 18px; font-size: 20.7px;
+  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); }
+/* status variants (#16) */
+.toast.success { border-color: var(--ok); color: var(--ok); }
+.toast.error { border-color: var(--err); color: var(--err); }
+
+/* protection section rhythm (#20) */
+.protect { display: flex; flex-direction: column; gap: 2px; }
+.protect .pw-row { padding: 2px 8px 4px; }
+.pw-field {
+  display: flex; align-items: center; gap: 2px; width: 100%;
+  border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg);
+}
+.pw-field:focus-within { border-color: var(--accent); }
+.pw-field input {
+  flex: 1; min-width: 0; border: none; outline: none; background: transparent; color: var(--fg);
+  font: inherit; font-size: 21.6px; padding: 7px 12px; letter-spacing: .08em;
+}
+.pw-field input::placeholder { color: var(--muted); letter-spacing: normal; }
+.pw-field .reveal {
+  background: none; border: none; color: var(--muted-fg); cursor: pointer;
+  display: flex; align-items: center; justify-content: center; padding: 0 10px; height: 100%;
+  flex-shrink: 0;
+}
+.pw-field .reveal:hover { color: var(--fg); }
+.pw-field .reveal .eye-slash { display: none; }
+.pw-field .reveal.off .eye-slash { display: block; }
+.pw-field svg { width: 20px; height: 20px; display: block; }
+
+/* custom URL input (#22) */
+.deck .row input[type="text"] { width: 100%; }
+.custom-input {
+  display: block; width: 100%;
+  border: 1px solid var(--border); border-radius: var(--radius); padding: 7px 12px;
+  background: var(--bg); color: var(--fg); font: inherit; font-size: 21.6px; outline: none;
+}
+.custom-input:focus { border-color: var(--accent); }
+.custom-input::placeholder { color: var(--muted); }
+
+/* btn-icon svg (#24) */
+.btn-icon svg { width: 20px; height: 20px; display: block; }
+
+/* search spinner (#32) */
+.search-spinner {
+  width: 16px; height: 16px; flex-shrink: 0;
+  border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%;
+  animation: spin .8s linear infinite; visibility: hidden;
+}
+@keyframes spin { to { transform: rotate(360deg); } }
+
+/* unlock redesign (#27) */
+.unlock-card .pw-field { margin: 18px 0 4px; text-align: left; }
+.unlock-card .pw-field input { text-align: left; }
+.unlock-err { margin-top: 10px; font-size: 20.7px; color: #ff8fa3; }
+
+/* paste name under slug pill in Paste column (#43) */
+.paste-sub { font-size: 19.8px; color: var(--muted-fg); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.paste-sub.dim { color: var(--muted); }
+td .url-link { font-size: 19.8px; }
+td .id-link { color: var(--muted-fg); text-decoration: none; font-family: var(--font-mono); font-size: 19.8px; }
+td .id-link:hover { color: var(--accent); }
+
+/* sortable column headers (#42) */
+th.sortable { cursor: pointer; user-select: none; }
+th.sortable:hover { color: var(--fg); }
+.sort-ind { display: inline-block; width: 0; height: 0; margin-left: 6px; vertical-align: middle; border-left: 5px solid transparent; border-right: 5px solid transparent; }
+th.sorted.asc .sort-ind { border-bottom: 6px solid var(--accent); }
+th.sorted.desc .sort-ind { border-top: 6px solid var(--accent); }
+
+/* ============================================================
+   Consistency audit (#18) — shared tokens across inputs, buttons,
+   headings. Visual-only, no behavior change.
+   ============================================================ */
+
+/* shared text-input treatment: .search input, .pw-field input, #title, #custom */
+.search input,
+.pw-field input,
+.editor-head input#title,
+.custom-input,
+.row input[type="text"] {
+  font-size: 21.6px;
+  color: var(--fg);
+}
+.search input::placeholder,
+.pw-field input::placeholder,
+.editor-head input#title::placeholder,
+.custom-input::placeholder {
+  color: var(--muted);
+}
+.custom-input { border-radius: var(--radius); }
+
+/* buttons (incl. icon-only variants) share one radius + focus ring */
+.btn-icon, .iconbtn {
+  border-radius: var(--radius);
+  transition: color .12s ease, border-color .12s ease, background .12s ease;
+}
+.iconbtn:focus-visible, .btn:focus-visible, .btn-icon:focus-visible, .pager button:focus-visible {
+  outline: 2px solid var(--accent);
+  outline-offset: 1px;
+}
+
+/* in-place copy success feedback (#53) */
+.iconbtn.ok, .btn.ok {
+  color: var(--ok);
+  border-color: var(--ok);
+}
+
+/* headings: unified treatment (mirrors .side-section h3) */
+.settings-head h1, .paste-title-bar h1, .head-row h1, .inner h1 {
+  letter-spacing: -0.01em;
+}
+
+/* consistent card padding scale: 12px 18px for wide card heads/bodies */
+.settings-head { padding: 12px 18px; }
+.settings-body { padding: 16px 18px; }
+
+/* topbar: Git external-link arrow (#56) */
+.topbar nav a .ext { width: 14px; height: 14px; margin-left: 4px; opacity: .55; vertical-align: -1px; }
+
+@media (max-width: 640px) {
+  body { font-size: 16px; }
+
+  /* topbar: tighten so logo + nav + gear fit */
+  .topbar { gap: 10px; padding: 0 12px; height: 56px; }
+  .logo { font-size: 17px; white-space: nowrap; }
+  .logo em { display: none; }
+  .topbar nav { gap: 2px; flex-shrink: 0; }
+  .topbar nav a { padding: 5px 8px; font-size: 15px; }
+  .iconbtn.gear { padding: 4px 7px; flex-shrink: 0; }
+  .iconbtn.gear svg { width: 18px; height: 18px; }
+
+  /* new paste: stack editor above sidebar, natural page height */
+  .deck {
+    display: flex; flex-direction: column;
+    height: auto; min-height: calc(100vh - 56px);
+    padding: 12px; gap: 12px;
+  }
+  .pane-l-col { order: 0; }
+  .pane-r { order: 1; overflow-y: visible; }
+  .editor-wrap { min-height: 45vh; }
+  .editor { font-size: 15px; }
+  .gutter { font-size: 15px; }
+  .editor-head input { min-width: 0; font-size: 16px; }
+  .editor-head select { max-width: 120px; font-size: 14px; }
+  .actionbar { flex-wrap: wrap; }
+  .actionbar .btn { padding: 12px 22px; }
+  .hint { font-size: 13px; }
+
+  /* history: horizontal-scroll table inside its card */
+  .page { padding: 12px; }
+  .head-row { flex-wrap: wrap; }
+  .head-row h1 { font-size: 22px; }
+  .search { width: 100%; }
+  .search input { font-size: 16px; }
+  .float { overflow-x: auto; -webkit-overflow-scrolling: touch; }
+  table { min-width: 720px; }
+  th { padding: 8px 10px; font-size: 12px; white-space: nowrap; }
+  td { padding: 8px 10px; font-size: 14px; }
+  .pager { flex-wrap: wrap; gap: 8px; font-size: 13px; }
+
+  /* paste view */
+  .paste-title-bar { padding: 10px 12px; gap: 8px; }
+  .paste-title-bar h1 { font-size: 18px; }
+  .slug { font-size: 13px; word-break: break-all; }
+  .stats-head { font-size: 13px; }
+  .stats-grid { font-size: 13px; padding: 10px 12px; }
+  .code { 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 */
+  .center { height: auto; min-height: calc(100vh - 56px); padding: 16px; }
+  .center .float { width: 100%; }
+  .inner { padding: 20px 16px; }
+  .inner h1 { font-size: 20px; }
+  .inner .sub { font-size: 14px; }
+  .unlock-err { font-size: 13px; }
+  .center .foot { font-size: 13px; }
+}

web/static/table.js

@@ -0,0 +1,162 @@
+// Shared table logic for history (/api/public) and saved (/api/mine) pages (#57).
+// Provides: live search, client-side sort with indicators, row rendering via
+// a page-supplied rowHtml(), pagination state, and row click-through.
+const PaletteTable = (() => {
+  const $ = id => document.getElementById(id);
+  const esc = s => { const d = document.createElement('div'); d.textContent = s == null ? '' : s; return d.innerHTML; };
+  const fmtSize = n => { if (n == null) return 'none'; if (n < 1024) return n + ' B'; if (n < 1048576) return (n/1024).toFixed(1) + ' KB'; return (n/1048576).toFixed(1) + ' MB'; };
+  const ago = ts => {
+    const s = 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';
+  };
+
+  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 === 'size' || k === 'view_count' || k === 'created_at') return v == null ? -1 : v;
+    return v == null ? null : v;
+  };
+
+  function init(opts) {
+    // opts: {endpoint, perPage, hasPager, rowHtml(it), emptyFiltered, emptyAll}
+    const state = { filter: '', sortKey: null, sortDir: 1, page: 1, total: 0 };
+    let timer = null;
+
+    function sortItems(items) {
+      if (!state.sortKey) return items;
+      const k = state.sortKey, dir = state.sortDir;
+      return items.slice().sort((a, b) => {
+        const va = sortVal(a, k), vb = sortVal(b, k);
+        const na = va == null, nb = vb == null;
+        if (na && nb) return 0;
+        if (na) return 1;
+        if (nb) return -1;
+        if (va < vb) return -1 * dir;
+        if (va > vb) return 1 * dir;
+        return (a.created_at || 0) < (b.created_at || 0) ? 1 : -1;
+      });
+    }
+
+    function matches(it) {
+      if (!state.filter) return true;
+      const f = state.filter.toLowerCase();
+      return (it.title || '').toLowerCase().includes(f) || (it.id || '').toLowerCase().includes(f);
+    }
+
+    function renderSortIndicators() {
+      document.querySelectorAll('th.sortable').forEach(th => {
+        th.classList.toggle('sorted', th.dataset.sort === state.sortKey);
+        th.classList.toggle('asc', th.dataset.sort === state.sortKey && state.sortDir === 1);
+        th.classList.toggle('desc', th.dataset.sort === state.sortKey && state.sortDir === -1);
+      });
+    }
+
+    async function load() {
+      const spinner = $('search-spinner');
+      if (spinner) spinner.style.visibility = 'visible';
+      try {
+        const filtered = state.filter.length > 0;
+        const off = (state.page - 1) * opts.perPage;
+        const url = (filtered || state.sortKey)
+          ? opts.endpoint + '?limit=500&offset=0'
+          : opts.endpoint + '?limit=' + opts.perPage + '&offset=' + off;
+        const res = await fetch(url);
+        const data = await res.json();
+        state.total = data.total;
+        let items = filtered ? data.items.filter(matches) : data.items;
+        items = sortItems(items);
+
+        const count = $('count');
+        if (count) count.textContent = filtered
+          ? items.length.toLocaleString() + ' matches (of ' + state.total.toLocaleString() + ' total)'
+          : state.total.toLocaleString() + ' total';
+
+        const rows = $('rows'), empty = $('empty');
+        if (!items.length) {
+          rows.innerHTML = '';
+          empty.style.display = 'block';
+          empty.textContent = filtered ? opts.emptyFiltered : opts.emptyAll;
+        } else {
+          empty.style.display = 'none';
+          rows.innerHTML = items.map(opts.rowHtml).join('');
+        }
+
+        const pager = $('pg'), showing = $('showing');
+        if (opts.hasPager && pager && showing) {
+          const pages = Math.max(1, Math.ceil(state.total / opts.perPage));
+          if (filtered || state.sortKey) {
+            showing.textContent = state.sortKey
+              ? 'Sorted by ' + state.sortKey + ' (' + (state.sortDir === 1 ? 'ascending' : 'descending') + ') · ' + items.length.toLocaleString() + ' of ' + state.total.toLocaleString()
+              : 'Showing ' + items.length.toLocaleString() + ' matches for "' + state.filter + '"';
+            pager.innerHTML = '';
+          } else {
+            showing.textContent = state.total === 0 ? 'Nothing here yet' :
+              `Showing ${off+1}–${Math.min(off+opts.perPage, state.total)} of ${state.total.toLocaleString()} · page ${state.page} of ${pages}`;
+            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]);
+            let last = 0;
+            for (let i = 1; i <= pages; i++) {
+              if (win.has(i)) {
+                if (last && i - last > 1) btns.push('<span class="dim">…</span>');
+                add(String(i), i, {on: i===state.page});
+                last = i;
+              }
+            }
+            add('›', state.page+1, {dis: state.page===pages});
+            pager.innerHTML = btns.join('');
+          }
+        } else if (showing) {
+          showing.textContent = '';
+        }
+        renderSortIndicators();
+      } finally {
+        if (spinner) spinner.style.visibility = 'hidden';
+      }
+    }
+
+    document.querySelector('thead').addEventListener('click', e => {
+      const th = e.target.closest('th.sortable');
+      if (!th) return;
+      const k = th.dataset.sort;
+      if (state.sortKey === k) { state.sortDir = -state.sortDir; } else { state.sortKey = k; state.sortDir = 1; }
+      renderSortIndicators();
+      load();
+    });
+
+    const rows = $('rows');
+    if (rows) rows.addEventListener('click', e => {
+      const tr = e.target.closest('tr.row[data-href]');
+      if (!tr || e.target.closest('a') || e.target.closest('button')) return;
+      window.location.href = tr.dataset.href;
+    });
+
+    const pg = $('pg');
+    if (pg) pg.addEventListener('click', e => {
+      const b = e.target.closest('button[data-p]');
+      if (!b || b.disabled) return;
+      state.page = parseInt(b.dataset.p);
+      load();
+      window.scrollTo(0, 0);
+    });
+
+    const filter = $('filter');
+    if (filter) filter.addEventListener('input', e => {
+      clearTimeout(timer);
+      timer = setTimeout(() => {
+        state.filter = e.target.value.trim();
+        state.page = 1;
+        load();
+      }, 200);
+    });
+
+    return { load, state, esc, fmtSize, ago };
+  }
+
+  return { init, esc, fmtSize, ago };
+})();

web/templates/foot.html

@@ -1 +1,21 @@
-{{define "foot"}}{{end}}
+{{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}}

web/templates/history.html

@@ -4,86 +4,49 @@
   <div class="head-row">
     <h1>Public pastes</h1>
     <span class="count" id="count"></span>
-    <div class="spacer"></div>
-    <div class="search"><input id="filter" placeholder="filter…"></div>
   </div>
+  <div class="search"><input id="filter" placeholder="Search…"><span class="search-spinner" id="search-spinner"></span></div>
   <div class="float">
     <table>
-      <thead><tr><th>Paste</th><th>Description</th><th>Language</th><th>Size</th><th>Views</th><th>Created</th></tr></thead>
+      <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>
+      <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>
+      </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="pager">
+  </div>
-      <span id="showing"></span>
+  <div class="pager float">
-      <div class="pg" id="pg"></div>
+    <span id="showing"></span>
-    </div>
+    <div class="pg" id="pg"></div>
   </div>
 </div>
+<script src="/static/table.js"></script>
 <script>
-const PER = 25;
+const t = PaletteTable.init({
-let page = 1, total = 0;
+  endpoint: '/api/public',
-const $ = id => document.getElementById(id);
+  perPage: 25,
-
+  hasPager: true,
-function esc(s) { const d = document.createElement('div'); d.textContent = s == null ? '' : s; return d.innerHTML; }
+  rowHtml: it =>
-function fmtSize(n) { if (n == null) return '—'; if (n < 1024) return n + ' B'; if (n < 1048576) return (n/1024).toFixed(1) + ' KB'; return (n/1048576).toFixed(1) + ' MB'; }
+    `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
-function ago(ts) {
+    (it.title
-  const s = Math.floor(Date.now()/1000) - ts;
+      ? `${t.esc(it.title)}`
-  if (s < 60) return s + 's ago';
+      : `<a class="slug" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>`) +
-  if (s < 3600) return Math.floor(s/60) + 'm ago';
+    `</td>` +
-  if (s < 86400) return Math.floor(s/3600) + 'h ago';
+    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
-  return Math.floor(s/86400) + 'd ago';
+    `<td class="dim">${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>`,
-async function load() {
+  emptyFiltered: 'No pastes match your search.',
-  const off = (page - 1) * PER;
+  emptyAll: 'No pastes yet. Create the first one.',
-  const res = await fetch('/api/public?limit=' + PER + '&offset=' + off);
-  const data = await res.json();
-  total = data.total;
-
-  $('count').textContent = total.toLocaleString() + ' total';
-  const rows = $('rows');
-  if (data.items.length === 0) {
-    rows.innerHTML = '';
-    $('empty').style.display = 'block';
-  } else {
-    $('empty').style.display = 'none';
-    rows.innerHTML = data.items.map(it =>
-      `<tr class="row"><td><a class="slug" href="/${esc(it.id)}">${esc(it.id)}</a></td>` +
-      `<td class="title-cell">${it.title ? esc(it.title) : '<span class=dim>—</span>'}</td>` +
-      `<td><span class="badge">${esc(it.language || 'text')}</span></td>` +
-      `<td class="dim">${fmtSize(it.size)}</td><td class="dim">${it.view_count}</td><td class="dim">${ago(it.created_at)}</td></tr>`
-    ).join('');
-  }
-
-  const pages = Math.max(1, Math.ceil(total / PER));
-  $('showing').textContent = total === 0 ? 'Nothing here yet' :
-    `Showing ${off+1}–${Math.min(off+PER, total)} of ${total.toLocaleString()} · page ${page} of ${pages}`;
-
-  const btns = [];
-  const add = (label, target, opts={}) => btns.push(`<button ${opts.on?'class="on"':''} ${opts.dis?'disabled':''} data-p="${target}">${label}</button>`);
-  add('‹', page-1, {dis: page===1});
-  const win = new Set([1, 2, page-1, page, page+1, pages]);
-  let last = 0;
-  for (let i = 1; i <= pages; i++) {
-    if (win.has(i)) {
-      if (last && i - last > 1) btns.push('<span class="dim">…</span>');
-      add(String(i), i, {on: i===page});
-      last = i;
-    }
-  }
-  add('›', page+1, {dis: page===pages});
-  $('pg').innerHTML = btns.join('');
-}
-
-$('pg').addEventListener('click', e => {
-  const b = e.target.closest('button[data-p]');
-  if (!b || b.disabled) return;
-  page = parseInt(b.dataset.p);
-  load();
-  window.scrollTo(0, 0);
 });
-$('filter').addEventListener('input', () => { page = 1; load(); });
+t.load();
-load();
+setInterval(t.load, 30000); // auto-refresh history every 30s
-setInterval(load, 30000); // auto-refresh history every 30s
 </script>
 {{template "foot" .}}

web/templates/layout.html

@@ -2,16 +2,27 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="stylesheet" href="/static/app.css">
+<script>
+// preset preview hook (#16): ?theme=<name> sets data-preset for screenshots only
+(function () {
+  var t = new URLSearchParams(location.search).get('theme');
+  if (t) document.documentElement.dataset.preset = t;
+})();
+</script>
 {{end}}
 
 {{define "topbar"}}
   <div class="topbar">
     <a class="logo" href="/history">Palette <em>/ beta</em></a>
     <nav>
-      <a href="/new" {{if eq .Page "new"}}class="on"{{end}}>new</a>
+      <a href="/new" {{if eq .Page "new"}}class="on"{{end}}>New</a>
-      <a href="/history" {{if eq .Page "history"}}class="on"{{end}}>history</a>
+      <a href="/history" {{if eq .Page "history"}}class="on"{{end}}>Public</a>
-      <a href="https://git.archfox.org/poslop/palette">git</a>
+      <a href="/mine" {{if eq .Page "mine"}}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>
+    <a class="iconbtn gear" href="/settings" title="Settings" aria-label="Settings">
+      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="12" cy="12" r="3"/><path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1 0 2.83 2 2 0 0 1-2.83 0l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-2 2 2 2 0 0 1-2-2v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83 0 2 2 0 0 1 0-2.83l.06-.06a1.65 1.65 0 0 0 .33-1.82 1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1-2-2 2 2 0 0 1 2-2h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 0-2.83 2 2 0 0 1 2.83 0l.06.06a1.65 1.65 0 0 0 1.82.33H9a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 2-2 2 2 0 0 1 2 2v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 0 2 2 0 0 1 0 2.83l-.06.06a1.65 1.65 0 0 0-.33 1.82V9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 2 2 2 2 0 0 1-2 2h-.09a1.65 1.65 0 0 0-1.51 1z"/></svg>
+    </a>
   </div>
 {{end}}

web/templates/mine.html

@@ -0,0 +1,73 @@
+{{template "head" .}}
+{{template "topbar" .}}
+<div class="page">
+  <div class="head-row">
+    <h1>Saved pastes</h1>
+    <span class="count" id="count"></span>
+  </div>
+  <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>
+      <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>
+      </tr></thead>
+      <tbody id="rows"></tbody>
+    </table>
+    <div class="empty" id="empty" style="display:none">No pastes from this browser yet.</div>
+  </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: 50,
+  hasPager: false,
+  rowHtml: it =>
+    `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
+    (it.title
+      ? `${t.esc(it.title)}`
+      : `<a class="slug" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>`) +
+    `</td>` +
+    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
+    `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
+    (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
+    `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td>` +
+    `<td><button class="btn btn-icon del" data-id="${t.esc(it.id)}" title="Delete paste" aria-label="Delete paste">&times;</button></td></tr>`,
+  emptyFiltered: 'No pastes from this browser match your search.',
+  emptyAll: 'No pastes from this browser yet.',
+});
+
+// delete buttons (viewer-scoped, enforced server-side #37)
+document.getElementById('rows').addEventListener('click', async e => {
+  const del = e.target.closest('button.del');
+  if (!del) return;
+  e.stopPropagation();
+  del.disabled = true;
+  try {
+    const res = await fetch('/api/pastes/' + del.dataset.id, { method: 'DELETE' });
+    if (res.ok) { toast('Deleted', 'success'); t.load(); }
+    else { toast('Delete failed', 'error'); del.disabled = false; }
+  } catch (err) { toast('Delete failed', 'error'); del.disabled = false; }
+});
+
+t.load();
+</script>
+{{template "foot" .}}

web/templates/new.html

@@ -1,26 +1,32 @@
 {{template "head" .}}
 {{template "topbar" .}}
 <div class="deck">
-  <div class="float pane-l">
+  <div class="pane-l-col">
-    <div class="editor-head">
+    <div class="float pane-l-head">
-      <input id="title" placeholder="title (optional)">
+      <div class="editor-head">
-      <select id="language">
+        <input id="title" placeholder="Title">
-        <option value="">auto</option>
+        <select id="language">
-        <option>go</option><option>python</option><option>javascript</option>
+          <option value="">auto</option>
-        <option>rust</option><option>c</option><option>cpp</option><option>java</option>
+          <option>go</option><option>python</option><option>javascript</option><option>typescript</option>
-        <option>bash</option><option>sql</option><option>yaml</option><option>json</option>
+          <option>rust</option><option>c</option><option>cpp</option><option>java</option><option>csharp</option>
-        <option>markdown</option><option>text</option>
+          <option>bash</option><option>sql</option><option>yaml</option><option>json</option>
-      </select>
+          <option>html</option><option>css</option><option>xml</option><option>php</option>
+          <option>ruby</option><option>perl</option><option>lua</option><option>dockerfile</option>
+          <option>toml</option><option>ini</option><option>diff</option>
+          <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>
+      </div>
     </div>
-    <div class="editor-wrap">
+    <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>
+      <textarea class="editor" id="content" placeholder="Paste your code, text, or notes here…" spellcheck="false"></textarea>
     </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>
-      <button class="btn" id="create">Create ⇧</button>
+      <button class="btn" id="create">Create</button>
     </div>
   </div>
 
@@ -33,22 +39,38 @@
         <label><input type="radio" name="exp" value="24h"> 1 day</label>
         <label><input type="radio" name="exp" value="168h" checked> 1 week</label>
         <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">
+          <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>
     <div class="float side-section">
       <h3>Protection</h3>
-      <label class="toggle"><input type="checkbox" id="haspw"> Password lock</label>
+      <div class="protect">
-      <input type="password" id="password" class="pwinput" placeholder="password" style="display:none; margin: 6px 8px 0; width: auto;">
+        <label class="toggle"><input type="checkbox" id="haspw"> Password lock</label>
-      <label class="toggle"><input type="checkbox" id="burn"> Burn after read</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>
-      <label class="toggle"><input type="checkbox" id="unlisted"> Unlisted</label>
+        <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>
+        <label class="toggle"><input type="checkbox" id="unlisted"> Unlisted</label>
+      </div>
     </div>
     <div class="float side-section">
       <h3>Custom URL</h3>
-      <div class="row"><span>/</span><input type="text" id="custom" placeholder="my-snippet"></div>
+      <input type="text" id="custom" class="custom-input" placeholder="/my-snippet">
+      <div class="hint" style="margin-top:6px; font-size:19px;">Stays reserved while the paste exists</div>
     </div>
-    <div class="float side-section">
+    <div class="float side-section" id="result-card" style="display:none">
       <h3>Result</h3>
-      <div class="hint" id="result" style="word-break:break-all">—</div>
+      <div class="hint" id="result" style="word-break:break-all">empty</div>
     </div>
   </div>
 </div>
@@ -65,7 +87,113 @@ function updateGutter() {
 content.addEventListener('input', updateGutter);
 updateGutter();
 
-$('haspw').addEventListener('change', e => { $('password').style.display = e.target.checked ? 'block' : 'none'; });
+function toast(msg, kind) {
+  let t = document.querySelector('.toast');
+  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
+  t.textContent = msg;
+  t.classList.remove('success', 'error');
+  if (kind === 'success') t.classList.add('success');
+  if (kind === 'error') t.classList.add('error');
+  t.classList.add('show');
+  clearTimeout(t._h);
+  t._h = setTimeout(() => t.classList.remove('show'), 2000);
+}
+$('haspw').addEventListener('change', e => { $('pwrow').style.display = e.target.checked ? 'block' : 'none'; });
+$('burn').addEventListener('change', e => { $('burnrow').style.display = e.target.checked ? 'block' : 'none'; });
+document.querySelectorAll('input[name="exp"]').forEach(r => r.addEventListener('change', () => {
+  $('customexp-row').style.display = document.querySelector('input[name="exp"]:checked').value === 'custom' ? 'block' : 'none';
+  $('customexp-err').style.display = 'none';
+}));
+
+// compose the expires_in Go-duration string when Custom is checked (#48).
+// Returns the string, or null with an inline error shown.
+function composeCustomExpiry() {
+  const n = parseInt($('expnum').value, 10);
+  const unit = $('expunit').value;
+  let mins = NaN;
+  if (n > 0) {
+    if (unit === 'm') mins = n;
+    else if (unit === 'h') mins = n * 60;
+    else if (unit === 'd') mins = n * 1440;
+    else if (unit === 'w') mins = n * 10080;
+    else if (unit === 'mo') mins = n * 43200; // months counted as 30 days
+  }
+  const err = $('customexp-err');
+  if (!(mins >= 1)) {
+    err.textContent = 'Enter a duration of at least 1 minute.';
+    err.style.display = 'block';
+    return null;
+  }
+  if (mins > 525600) { // more than 1 year
+    err.textContent = 'Custom expiry cannot exceed 1 year.';
+    err.style.display = 'block';
+    return null;
+  }
+  err.style.display = 'none';
+  // compose as h (+d/m remainders); Go parses '336h', '90m', '6h30m' fine
+  const hours = Math.floor(mins / 60), rem = mins % 60;
+  if (rem === 0) return hours + 'h';
+  if (hours === 0) return rem + 'm';
+  return hours + 'h' + rem + 'm';
+
+$('pwreveal').addEventListener('click', () => {
+  const pw = $('password');
+  const show = pw.type === 'password';
+  pw.type = show ? 'text' : 'password';
+  $('pwreveal').classList.toggle('off', !show);
+  $('pwreveal').title = show ? 'Hide password' : 'Show password';
+});
+
+let guessed = ''; // last auto-detected language, '' = user override
+
+function showResult(html, isError) {
+  $('result').innerHTML = html;
+  $('result').dataset.token = isError ? '' : ($('result').dataset.token || '');
+  $('result-card').style.display = 'block';
+}
+function defaultFilename(lang) {
+  const names = {
+    python: 'Python.py', go: 'main.go', javascript: 'script.js', typescript: 'index.ts',
+    rust: 'main.rs', c: 'main.c', cpp: 'main.cpp', java: 'Main.java', bash: 'script.sh',
+    sql: 'query.sql', yaml: 'config.yaml', json: 'data.json', html: 'index.html',
+    css: 'style.css', xml: 'doc.xml', php: 'index.php', ruby: 'main.rb',
+    perl: 'main.pl', lua: 'main.lua', dockerfile: 'Dockerfile', toml: 'config.toml',
+    ini: 'config.ini', diff: 'changes.diff',
+    markdown: 'notes.md', text: 'Text.txt',
+  };
+  return names[lang] || '';
+}
+// fill default filename when title is still blank
+function maybeSetDefaultTitle(lang) {
+  const title = $('title');
+  if (lang && !title.value.trim()) {
+    const fn = defaultFilename(lang);
+    if (fn) title.value = fn;
+  }
+}
+
+async function guessLang() {
+  if (!content.value.trim()) return;
+  try {
+    const res = await fetch('/api/guess-language', {
+      method: 'POST',
+      headers: {'Content-Type': 'application/json'},
+      body: JSON.stringify({content: content.value}),
+    });
+    const data = await res.json();
+    if (res.ok && data.language) {
+      guessed = data.language;
+      $('language').value = data.language;
+      maybeSetDefaultTitle(data.language);
+    }
+  } catch(e) {}
+}
+
+// refresh button: always re-detect, even if user picked something
+$('reguess').addEventListener('click', guessLang);
+
+// auto-guess when pasting into the editor
+content.addEventListener('paste', () => setTimeout(guessLang, 0));
 
 async function create() {
   const body = {
@@ -75,9 +203,16 @@ async function create() {
     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) body.expires_in = exp;
+  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',
@@ -86,17 +221,44 @@ async function create() {
   });
   const data = await res.json();
   if (!res.ok) {
-    $('result').textContent = 'Error: ' + (data.error || res.status);
+    showResult('Error: ' + (data.error || res.status), true);
+    toast('Create failed', 'error');
     return;
   }
   const url = location.origin + '/' + (data.custom_slug || data.id);
-  $('result').innerHTML = '<a href="' + url + '">' + url + '</a>';
+  showResult('<a href="' + url + '">' + url + '</a> <button class="btn btn-icon" id="result-copy" title="Copy URL" type="button">⧉</button>', false);
   $('result').dataset.token = data.deletion_token || '';
-  try { navigator.clipboard.writeText(url); } catch(e) {}
+  const copyBtn = document.getElementById('result-copy');
+  copyBtn.addEventListener('click', () => {
+    try {
+      navigator.clipboard.writeText(url);
+      copyBtn.classList.add('ok');               // in-place success feedback (#53)
+      copyBtn.textContent = 'Success!';
+      setTimeout(() => { copyBtn.classList.remove('ok'); copyBtn.textContent = '⧉'; }, 2000);
+    } catch(e) { toast('Copy failed', 'error'); }
+  });
+  const dest = '/' + data.id + '?created=1&token=' + encodeURIComponent(data.deletion_token || '');
+  // password-protected: unlock now with the password we already have (#26)
+  if ($('haspw').checked && data.id) {
+    const fd = new FormData();
+    fd.append('password', $('password').value);
+    fd.append('next', dest);
+    try {
+      await fetch('/' + data.id, {method: 'POST', body: fd});
+    } catch(e) {}
+  }
   // show the paste
-  location.href = '/' + data.id + '?created=1&token=' + encodeURIComponent(data.deletion_token || '');
+  location.href = dest;
 }
 $('create').addEventListener('click', create);
+// reset stale result state when returning via Back (bfcache) (#28)
+window.addEventListener('pageshow', e => {
+  if (!e.persisted) return;
+  const rc = document.getElementById('result-card');
+  if (rc) rc.style.display = 'none';
+  const r = document.getElementById('result');
+  if (r) { r.innerHTML = 'empty'; delete r.dataset.token; }
+});
 document.addEventListener('keydown', e => {
   if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') { e.preventDefault(); create(); }
 });

web/templates/paste.html

@@ -2,17 +2,36 @@
 {{template "topbar" .}}
 <div class="page">
   <div class="float">
-    <div class="meta-bar">
+    <div class="paste-title-bar">
       <h1>{{if .Title}}{{.Title}}{{else}}Untitled paste{{end}}</h1>
-      <span class="slug">/{{.ID}}</span>
+      {{if .CustomSlug}}<span class="slug">/{{.CustomSlug}}</span>{{end}}
-      {{if .Language}}<span class="tag">{{.Language}}</span>{{end}}
-      {{if .ExpiresAt}}<span class="tag">expires in {{.ExpiresIn}}</span>{{end}}
       <div class="spacer"></div>
       <a class="iconbtn" href="/raw/{{.ID}}">raw</a>
-      <a class="iconbtn" href="#" onclick="copyContent(); return false;">copy</a>
+      <a class="iconbtn" href="#" id="copy-btn" onclick="copyContent(this); return false;">copy</a>
       {{if .DeletionToken}}<a class="iconbtn danger" href="#" onclick="redeem('{{.DeletionToken}}'); return false;">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()">
+        <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">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>
+          {{if .ExpiresAt}}<span class="stats-k">Expires</span><span class="stats-v">in {{.ExpiresIn}}</span>{{end}}
+          <span class="stats-k">Password</span><span class="stats-v">{{if .HasPassword}}protected{{else}}none{{end}}</span>
+          {{if .BurnAfterRead}}{{if .ReadsLimit}}{{with .ReadsLeftN}}<span class="stats-k">Reads left</span><span class="stats-v">{{.}} of {{$.ReadsTotal}}</span>{{end}}{{else}}<span class="stats-k">Burn</span><span class="stats-v">burn after read</span>{{end}}{{end}}
+          {{if .CustomSlug}}<span class="stats-k">Custom URL</span><span class="stats-v">/{{.CustomSlug}}</span>{{end}}
+          <span class="stats-k">Visibility</span><span class="stats-v">{{.Visibility}}</span>
+        </div>
+      </div>
+    </div>
+  </div>
   {{if .JustCreated}}
   <div class="float">
     <div class="created-banner" style="display:block">
@@ -22,19 +41,39 @@
   </div>
   {{end}}
   <div class="float">
-    <div class="code-head"><span class="dot"></span> {{.LineCount}} lines · {{.SizeBytes}} bytes</div>
     <div class="code"><div class="gutter">{{.Gutter}}</div><div class="codebody" id="codebody">{{.ContentHTML}}</div></div>
-    <div class="footnote">
-      <span>Created {{.CreatedAgo}}</span>
-      <span>{{.ViewCount}} views</span>
-      <span>{{.Visibility}}</span>
-    </div>
   </div>
 </div>
 <input type="hidden" id="raw-content" value="{{.ContentAttr}}">
 <script>
-function copyContent() {
+function toast(msg) {
+  let t = document.querySelector('.toast');
+  if (!t) { t = document.createElement('div'); t.className = 'toast'; document.body.appendChild(t); }
+  t.textContent = msg;
+  t.classList.add('show');
+  clearTimeout(t._h);
+  t._h = setTimeout(() => t.classList.remove('show'), 2000);
+}
+function toggleStats() {
+  const body = document.getElementById('stats-body');
+  const pill = document.getElementById('stats-pill');
+  const btn = document.getElementById('stats-toggle');
+  const open = body.hidden;
+  body.hidden = !open;
+  pill.classList.toggle('open', open);
+  btn.setAttribute('aria-expanded', open ? 'true' : 'false');
+}
+function copyContent(btn) {
   navigator.clipboard.writeText(document.getElementById('raw-content').value);
+  // in-place success feedback (#53)
+  if (btn) {
+    btn.classList.add('ok');
+    btn.textContent = 'Success!';
+    clearTimeout(btn._okh);
+    btn._okh = setTimeout(() => { btn.classList.remove('ok'); btn.textContent = 'copy'; }, 2000);
+  } else {
+    toast('Copied', 'success');
+  }
 }
 function redeem(token) {
   if (!confirm('Hard delete this paste immediately?')) return;

web/templates/settings.html

@@ -0,0 +1,13 @@
+{{template "head" .}}
+{{template "topbar" .}}
+<div class="page">
+  <div class="float">
+    <div class="settings-head">
+      <h1>Settings</h1>
+    </div>
+    <div class="settings-body">
+      <p>Settings are under construction.</p>
+    </div>
+  </div>
+</div>
+{{template "foot" .}}

web/templates/unlock.html

@@ -1,18 +1,29 @@
 {{template "head" .}}
 {{template "topbar" .}}
 <div class="center">
-  <div class="float">
+  <div class="float unlock-card">
     <div class="inner">
-      <div class="lockring">🔒</div>
+      <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"><rect x="3" y="11" width="18" height="11" rx="2"/><path d="M7 11V7a5 5 0 0 1 10 0v4"/></svg></div>
       <h1>This paste is locked</h1>
       <p class="sub">Enter the password to view <span class="slug">/{{.ID}}</span></p>
-      <form method="post" action="/unlock/{{.ID}}">
+      <form method="post" action="">
-        <input type="password" name="password" class="pwinput" placeholder="••••••••" autofocus>
+        <div class="pw-field">
-        {{if .Wrong}}<p class="err" style="display:block">Wrong password. Try again.</p>{{end}}
+          <input type="password" name="password" id="password" placeholder="Password" autocomplete="current-password" autofocus>
+          <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"/></svg></button>
+        </div>
+        {{if .Wrong}}<p class="unlock-err">Wrong password. Try again.</p>{{end}}
         <button class="btn" type="submit">Unlock</button>
       </form>
     </div>
-    <div class="foot">Created {{.CreatedAgo}}</div>
+    <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>
 {{template "foot" .}}