diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7af742..8594757 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
 ## [Unreleased]
 
 ### Changed
+- **Rehearser library extraction.** SQLite persistence helpers and the one-time IndexedDB migration now live in
+  `rehearser-library.js`, loaded with the Rehearser/Reader/Library lazy groups; behavior remains global-compatible.
 - **Expanded resource diagnostics.** The Performance panel now reports bounded browser cache counters, container
   cgroup current/max memory, artifact-cache bytes, and sanitized largest recent operation durations.
 - **Current-release constrained validation.** Built `1.24.21` and served it under a hard 4 GiB cgroup limit;
diff --git a/TODO.md b/TODO.md
index c9d91c8..6738be1 100644
--- a/TODO.md
+++ b/TODO.md
@@ -123,6 +123,7 @@ architecture change: the larger Audiobook/Rehearser/style split.
 - [x] Add a dependency-free frontend syntax and top-level declaration collision gate (`npm run check:frontend`);
   a full style/lint policy remains a follow-up.
 - [ ] Extract Rehearser voice matching and voice design.
+- [x] Extract Rehearser library persistence and IndexedDB migration into `rehearser-library.js`.
 - [ ] Extract Audiobook parsing and casting.
 - [ ] Split `style.css` by feature.
 - [ ] Do not migrate to TypeScript or rewrite the frontend until behavior is covered by tests.
diff --git a/VERSION b/VERSION
index 89394fd..5f4c2c9 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.24.23
+1.24.24
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index b4505e5..c35dca0 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -33,7 +33,8 @@ Done incrementally as global-scope ordered files (no ES-module change needed) 
 - ⬜ `rehearser-cast.js` — `renderCastList`, sort/filter, online voice picker, character research.
 - ⬜ `rehearser-stage.js` — playback, synth cache, pre-decode window, transport.
 - ⬜ `rehearser-train.js` — mic record / STT compare.
-- ⬜ `rehearser-library.js` — IndexedDB session store, import/export, auto-save.
+- ✅ `rehearser-library.js` — SQLite persistence helpers and IndexedDB migration; import/export and auto-save remain
+  in `rehearser.js` until their UI/event-handler dependencies are isolated.
 
 **Pattern (proven):** extract a cohesive block whose only cross-file references resolve at *call time* (event handlers), not at module load. Top-level `const rehState` and top-level `addEventListener` registrations must stay ordered — extract those last and load them after their dependencies. Re-run `npx playwright test` after each extraction.
 
diff --git a/static/js/rehearser-library.js b/static/js/rehearser-library.js
new file mode 100644
index 0000000..2367dd1
--- /dev/null
+++ b/static/js/rehearser-library.js
@@ -0,0 +1,59 @@
+// ── Rehearser library persistence ────────────────────────────────────────────
+// SQLite-backed rehearsal records and the one-time IndexedDB migration are
+// isolated from parsing, casting, and stage playback. Functions stay global
+// during the compatibility migration because audiobook.js/library.js call them.
+
+async function rehDbGetAll() {
+  const r = await fetch('/api/rehearsals');
+  if (!r.ok) throw new Error('rehDbGetAll failed: ' + r.status);
+  const d = await r.json();
+  return d.rehearsals || [];
+}
+async function rehDbGetById(id) {
+  const r = await fetch('/api/rehearsals/' + id);
+  if (r.status === 404) return undefined;
+  if (!r.ok) throw new Error('rehDbGetById failed: ' + r.status);
+  return r.json();
+}
+async function rehDbAdd(record) {
+  const r = await fetch('/api/rehearsals', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(_rehSanitize(record)) });
+  if (!r.ok) throw new Error('rehDbAdd failed: ' + r.status);
+  return (await r.json()).id;
+}
+async function rehDbPut(record) {
+  if (!record.id) return rehDbAdd(record);
+  const r = await fetch('/api/rehearsals/' + record.id, { method: 'PUT', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(_rehSanitize(record)) });
+  if (!r.ok) throw new Error('rehDbPut failed: ' + r.status);
+}
+async function rehDbDelete(id) {
+  const r = await fetch('/api/rehearsals/' + id, { method: 'DELETE' });
+  if (!r.ok) throw new Error('rehDbDelete failed: ' + r.status);
+}
+function _rehSanitize(rec) {
+  const out = { ...rec };
+  if (out.clips) out.clips = (out.clips || []).map(c => ({ lineIndex: c.lineIndex, speaker: c.speaker, type: c.type }));
+  return out;
+}
+function _rehIdbGetAll() {
+  return new Promise(resolve => {
+    const req = indexedDB.open('reh-library', 1);
+    req.onerror = () => resolve([]);
+    req.onsuccess = e => {
+      const db = e.target.result;
+      if (!db.objectStoreNames.contains('rehearsals')) { db.close(); resolve([]); return; }
+      const all = db.transaction('rehearsals', 'readonly').objectStore('rehearsals').getAll();
+      all.onsuccess = ev => { db.close(); resolve(ev.target.result || []); };
+      all.onerror = () => { db.close(); resolve([]); };
+    };
+  });
+}
+(async function _rehMigrateIfNeeded() {
+  try {
+    if ((await rehDbGetAll()).length) return;
+    const old = await _rehIdbGetAll();
+    if (!old.length) return;
+    const r = await fetch('/api/rehearsals/migrate', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(old.map(_rehSanitize)) });
+    if (r.ok) console.log(`[rehearser] migrated ${(await r.json()).imported} records from IndexedDB → SQLite`);
+  } catch (e) { console.warn('[rehearser] migration skipped:', e); }
+})();
+window.rehDbGetById = rehDbGetById;
diff --git a/static/js/rehearser.js b/static/js/rehearser.js
index 268c425..8bcdb48 100644
--- a/static/js/rehearser.js
+++ b/static/js/rehearser.js
@@ -120,92 +120,6 @@ const rehState = {
 };
 window.rehState = rehState;
 
-// ── Library — SQLite via /api/rehearsals ──────────────────────────────────
-
-async function rehDbGetAll() {
-  const r = await fetch('/api/rehearsals');
-  if (!r.ok) throw new Error('rehDbGetAll failed: ' + r.status);
-  const d = await r.json();
-  return d.rehearsals || [];
-}
-
-async function rehDbGetById(id) {
-  const r = await fetch('/api/rehearsals/' + id);
-  if (r.status === 404) return undefined;
-  if (!r.ok) throw new Error('rehDbGetById failed: ' + r.status);
-  return r.json();
-}
-
-async function rehDbAdd(record) {
-  const r = await fetch('/api/rehearsals', {
-    method: 'POST',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify(_rehSanitize(record)),
-  });
-  if (!r.ok) throw new Error('rehDbAdd failed: ' + r.status);
-  const d = await r.json();
-  return d.id;
-}
-
-async function rehDbPut(record) {
-  if (!record.id) { return rehDbAdd(record); }
-  const r = await fetch('/api/rehearsals/' + record.id, {
-    method: 'PUT',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify(_rehSanitize(record)),
-  });
-  if (!r.ok) throw new Error('rehDbPut failed: ' + r.status);
-}
-
-async function rehDbDelete(id) {
-  const r = await fetch('/api/rehearsals/' + id, { method: 'DELETE' });
-  if (!r.ok) throw new Error('rehDbDelete failed: ' + r.status);
-}
-
-// Strip binary clip blobs before sending — blobs can't be JSON-serialised and
-// are session-only anyway (they live in rehState.clips, not the library record).
-function _rehSanitize(rec) {
-  const out = { ...rec };
-  if (out.clips) out.clips = (out.clips || []).map(c => ({ lineIndex: c.lineIndex, speaker: c.speaker, type: c.type }));
-  return out;
-}
-
-// One-time IndexedDB → SQLite migration. Runs silently on page load.
-(async function _rehMigrateIfNeeded() {
-  try {
-    const serverRecs = await rehDbGetAll();
-    if (serverRecs.length > 0) return;
-    const idbRecs = await _rehIdbGetAll().catch(() => []);
-    if (!idbRecs.length) return;
-    const r = await fetch('/api/rehearsals/migrate', {
-      method: 'POST',
-      headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify(idbRecs.map(_rehSanitize)),
-    });
-    if (r.ok) {
-      const d = await r.json();
-      console.log(`[rehearser] migrated ${d.imported} records from IndexedDB → SQLite`);
-    }
-  } catch (e) {
-    console.warn('[rehearser] migration skipped:', e);
-  }
-})();
-
-function _rehIdbGetAll() {
-  return new Promise((resolve) => {
-    const req = indexedDB.open('reh-library', 1);
-    req.onerror = () => resolve([]);
-    req.onsuccess = e => {
-      const db = e.target.result;
-      if (!db.objectStoreNames.contains('rehearsals')) { db.close(); resolve([]); return; }
-      const all = db.transaction('rehearsals', 'readonly').objectStore('rehearsals').getAll();
-      all.onsuccess = ev => { db.close(); resolve(ev.target.result || []); };
-      all.onerror   = () => { db.close(); resolve([]); };
-    };
-  });
-}
-
-window.rehDbGetById  = rehDbGetById;
 window.rehLoadRecord = loadRecord;  // expose so audiobook.js can open a record directly
 
 // ── Serialization ─────────────────────────────────────────────────────────
diff --git a/static/module-manifest.json b/static/module-manifest.json
index ac2ed74..972367e 100644
--- a/static/module-manifest.json
+++ b/static/module-manifest.json
@@ -4,9 +4,9 @@
     "integrations", "routing", "voice-clone", "voice-library", "tts-preview", "generation", "benchmark", "stt", "namespace"
   ],
   "lazy": {
-    "s-rehearser": ["rehearser-parse", "rehearser"],
-    "s-reader": ["rehearser-parse", "rehearser", "characters-library", "reader", "audiobook/network", "audiobook", "character-sheets"],
-    "s-library": ["rehearser-parse", "rehearser", "characters-library", "reader", "audiobook/network", "audiobook", "character-sheets", "library", "character-columns", "library-characters", "sillytavern"],
-    "s-caststudio": ["rehearser-parse", "rehearser", "characters-library", "reader", "audiobook/network", "audiobook", "character-sheets", "library", "character-columns", "library-characters", "sillytavern", "studio"]
+    "s-rehearser": ["rehearser-parse", "rehearser", "rehearser-library"],
+    "s-reader": ["rehearser-parse", "rehearser", "rehearser-library", "characters-library", "reader", "audiobook/network", "audiobook", "character-sheets"],
+    "s-library": ["rehearser-parse", "rehearser", "rehearser-library", "characters-library", "reader", "audiobook/network", "audiobook", "character-sheets", "library", "character-columns", "library-characters", "sillytavern"],
+    "s-caststudio": ["rehearser-parse", "rehearser", "rehearser-library", "characters-library", "reader", "audiobook/network", "audiobook", "character-sheets", "library", "character-columns", "library-characters", "sillytavern", "studio"]
   }
 }