Editor: Find & Replace, read-aloud, backup, typography, phonetic, org niceties

Writer power-ups (Phase 11), plus the selection-bubble vs copy/paste fix.

- Find & Replace (Ctrl/Cmd+F): SearchHighlight decoration extension +
  FindReplace bar (match-case, replace-all back-to-front, scroll without
  popping the selection bubble).
- Read-aloud (Web Speech, offline) on the word card and selection bubble.
- Keyboard/touch access to the ESL helpers: Ctrl/Cmd+D look up word at caret,
  Ctrl/Cmd+J rewrite selection, touch long-press lookup. Refactored the
  right-click handler into a shared openWordLookup(pos).
- Whole-corpus backup: GET /api/docs/export-all zips every doc (md/docx),
  de-dupes filenames, dated name; sidebar download links. TestExportAll.
- Smart typography input rules (curly quotes/em-dash/ellipsis), ASCII-only so
  CJK is untouched.
- Duplicate doc, sidebar sort (Recent/Title/Longest), toolbar outline popover.
- English phonetic (chosen over pinyin for an English learner): ECDICT-built
  phonetic.json.gz (46,579 words) + Result.Phonetic + WordCard IPA line;
  scripts/build_phonetic.py (full build + --seed fallback).
- Selection bubble no longer blocks copy/paste: deferred to pointer-up and made
  click-through except on its buttons.

Claude-Session: https://claude.ai/code/session_016Yr6jELuRc7hyzYLccQKZd

internal/lexicon/data.go

@@ -27,3 +27,12 @@ var synonymsGz []byte
 //
 //go:embed data/gloss.json.gz
 var glossGz []byte
+
+// phoneticGz is the gzipped English-phonetic map: word → IPA, lowercase keys.
+// Built from ECDICT's phonetic column (scripts/build_phonetic.py). Shown beside
+// the read-aloud button so the writer — a Mandarin speaker learning English —
+// can see how to say the word. Ships with a small common-word seed; a full build
+// broadens coverage.
+//
+//go:embed data/phonetic.json.gz
+var phoneticGz []byte

internal/lexicon/lexicon.go

@@ -26,6 +26,7 @@ type Meaning struct {
 type Result struct {
 	Word        string    `json:"word"`
 	Gloss       string    `json:"gloss"`
+	Phonetic    string    `json:"phonetic"` // IPA for the English word; "" when absent
 	Definitions []Meaning `json:"definitions"`
 	Synonyms    []string  `json:"synonyms"`
 }
@@ -56,6 +57,7 @@ type Lexicon struct {
 	defs     map[string][][]string // word → [[pos, def, example], …]
 	synonyms map[string][]string   // word → [synonym, …]
 	gloss    map[string]string     // word → Chinese gloss
+	phonetic map[string]string     // word → IPA
 }
 
 // New returns a Lexicon. The datasets aren't read until the first Lookup.
@@ -75,6 +77,10 @@ func (l *Lexicon) load() {
 			l.loadErr = fmt.Errorf("load gloss: %w", err)
 			return
 		}
+		if err := gunzipJSON(phoneticGz, &l.phonetic); err != nil {
+			l.loadErr = fmt.Errorf("load phonetic: %w", err)
+			return
+		}
 	})
 }
 
@@ -95,6 +101,9 @@ func (l *Lexicon) Lookup(word string) (Result, error) {
 	}
 
 	res.Gloss = lookupGloss(l.gloss, norm)
+	// Phonetic is a word→string map like the gloss, so the same de-inflecting
+	// candidate walk resolves "running" → "run", etc.
+	res.Phonetic = lookupGloss(l.phonetic, norm)
 
 	if raw := lookupDefs(l.defs, norm); raw != nil {
 		for _, m := range raw {