refactor: scope settings module

CHANGELOG.md

@@ -8,6 +8,8 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
 ## [Unreleased]
 
 ### Changed
+- **Settings namespace migration.** Settings state, backend catalogs, help rendering, and provider configuration now use
+  a private scope with live compatibility accessors and a `window.TTVC.settings` API.
 - **Character library namespace migration.** SQLite-backed character persistence, identity merging, image updates, and
   rendering now use a private scope with explicit compatibility exports and a `window.TTVC.characters` API.
 - **Studio namespace migration.** Four-phase navigation, DOM borrowing, resume state, and cast-footer coordination now

VERSION

@@ -1 +1 @@
-1.24.73
+1.24.74

docs/ARCHITECTURE.md

@@ -63,6 +63,7 @@ Done incrementally as global-scope ordered files (no ES-module change needed)
 - ✅ Rehearser cast rendering uses a private scope with explicit view/filter/sort compatibility exports.
 - ✅ Studio navigation and DOM-borrowing coordination use a private scope with explicit compatibility exports.
 - ✅ Character library persistence and rendering use a private scope with explicit identity/image compatibility exports.
+- ✅ Settings state and backend configuration use a private scope with live compatibility accessors and a namespace API.
 - ✅ `static/css/resource-diagnostics.css` — isolated Performance/resource diagnostic panel styles.
 - ✅ `static/css/background-jobs.css` — isolated background-job history and retry-panel styles.
 - ✅ `static/css/voice-design.css` — isolated Voice Design form, samples, and preview-match styles.

static/index.html

@@ -10,7 +10,7 @@
   <meta name="format-detection" content="telephone=no">
   <meta name="color-scheme" content="light dark">
   <meta name="theme-color" content="#2563EB">
-  <meta name="app-version" content="1.24.73">
+  <meta name="app-version" content="1.24.74">
   <link rel="manifest" href="/manifest.webmanifest">
   <link rel="icon" href="/static/icon.svg" type="image/svg+xml">
   <link rel="apple-touch-icon" href="/static/icon.svg">
@@ -27,12 +27,12 @@
 
   <!-- ── Core styles (local — no CDN dependency for first paint) ────────── -->
   <link rel="stylesheet" href="/static/vendor/mdi/materialdesignicons.min.css">
-  <link rel="stylesheet" href="/static/style.css?v=1.24.73">
-  <link rel="stylesheet" href="/static/css/resource-diagnostics.css?v=1.24.73">
-  <link rel="stylesheet" href="/static/css/background-jobs.css?v=1.24.73">
-  <link rel="stylesheet" href="/static/css/voice-design.css?v=1.24.73">
-  <link rel="stylesheet" href="/static/css/rehearser.css?v=1.24.73">
-  <link rel="stylesheet" href="/static/css/audiobook.css?v=1.24.73">
+  <link rel="stylesheet" href="/static/style.css?v=1.24.74">
+  <link rel="stylesheet" href="/static/css/resource-diagnostics.css?v=1.24.74">
+  <link rel="stylesheet" href="/static/css/background-jobs.css?v=1.24.74">
+  <link rel="stylesheet" href="/static/css/voice-design.css?v=1.24.74">
+  <link rel="stylesheet" href="/static/css/rehearser.css?v=1.24.74">
+  <link rel="stylesheet" href="/static/css/audiobook.css?v=1.24.74">
 
 
   <!-- ── Flag icons — non-blocking (loaded async, icons appear after JS) ── -->
@@ -397,7 +397,7 @@ window.toggleNavTree = function(treeId, chevronId) {
 </script>
 
 <!-- loader.js: fetches sections → loads JS modules → removes skeleton -->
-<script src="/static/loader.js?v=1.24.73"></script>
+<script src="/static/loader.js?v=1.24.74"></script>
 
 </body>
 </html>

static/js/settings.js

@@ -1,5 +1,7 @@
 // ── Settings ──────────────────────────────────────────────────────────────
 
+(function (root) {
+
 const SETTINGS_SEEN_KEY = 'vcf-settings-seen';
 let _appSettings = {};
 let _ttsBackends = [];
@@ -1059,3 +1061,28 @@ $('helper-apply-btn')?.addEventListener('click', () => {
     modal.hidden = true;
   });
 })();
+
+Object.assign(root, {
+  SETTINGS_SEEN_KEY, IMAGE_GEN_MODELS, IMAGE_GEN_MODEL_CUSTOM,
+  availableTtsBackends, ttsBackendOptions, styleBackendOptions, backendById,
+  backendComputeDevice, backendComputeDeviceClass, backendHelpHtml, sttBackendHelpHtml,
+  updateBackendHelp, updateStyleBackendHelp, updateBackendDependentTabs,
+  refreshTtsBackendAvailability, _patchSettings, _saveEngineLocalUrls,
+  _saveEngineContainerNames, ENGINE_API_KEY_SETTING_MAP, engineApiKeyValue,
+  saveEngineApiKey, restoreEngineApiKeyInputs, SETTINGS_PAGE_GUIDES, SETTINGS_FIELD_HELP,
+  enhanceSettingsHelp, loadSettings, markSettingsSeen, openSettings, closeSettings,
+  validateVoiceId,
+});
+Object.defineProperty(root, '_appSettings', { configurable: true, get: () => _appSettings, set: v => { _appSettings = v; } });
+Object.defineProperty(root, '_ttsBackends', { configurable: true, get: () => _ttsBackends, set: v => { _ttsBackends = v; } });
+root.TTVC = root.TTVC || {};
+root.TTVC.settings = root.TTVC.settings || {};
+Object.assign(root.TTVC.settings, {
+  get appSettings() { return _appSettings; },
+  get ttsBackends() { return _ttsBackends; },
+  load: loadSettings,
+  open: openSettings,
+  close: closeSettings,
+  availableTtsBackends,
+});
+})(window);