remove the onboarding flow and the accountMode leftover

Onboarding was dead in three layers:

- The OnboardingAdmin screen was only reachable from a route block in App.tsx
  that has been commented out, so it never rendered. Its ServerTypeCard carried
  accountMode ('organization' | 'single'), inherited from the codebase this was
  based on and meaningless for a single-user platform.
- Two /onboarding-complete endpoints, one public and one protected, that no
  frontend code called. Both read a server_config key that was never written, so
  both answered false while the app's own path defaulted to true.
- HomeScreen gated on settings.onboarding.complete to show a welcome panel, and
  seedHomeDir created an Onboarding folder from DATA_PATH/Onboarding and
  /Onboarding_Admin — neither seed directory exists, so it only ever produced an
  empty folder.

Also drops the onboarding key from UserSettings and the now-empty home-header
panel from the default home layout.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/servers/api/file-browser/router.ts

@@ -18,10 +18,8 @@ async function getUserTtsVoice(userId: number): Promise<string | null> {
   return null;
 }
 
-const DEFAULT_HOME_DIRS = ['Downloads', 'Documents', 'Music', 'Videos', 'Pictures', 'Onboarding'];
+const DEFAULT_HOME_DIRS = ['Downloads', 'Documents', 'Music', 'Videos', 'Pictures'];
 const OLD_CACHE_DIRS = ['ocr', 'tts', 'transcriptions', 'audio', 'video'];
-const ONBOARDING_SEED = join(DATA_PATH, 'Onboarding');
-const ONBOARDING_ADMIN_SEED = join(DATA_PATH, 'Onboarding_Admin');
 
 async function cleanOldCacheDirs(userDataDir: string) {
   for (const dir of OLD_CACHE_DIRS) {
@@ -30,28 +28,10 @@ async function cleanOldCacheDirs(userDataDir: string) {
   }
 }
 
-async function syncSeedDir(seedDir: string, targetDir: string) {
-  if (!existsSync(seedDir)) return;
-
-  await mkdir(targetDir, { recursive: true });
-
-  const seedEntries = await readdir(seedDir, { withFileTypes: true });
-  for (const entry of seedEntries) {
-    const dest = join(targetDir, entry.name);
-    if (existsSync(dest)) continue;
-    await cp(join(seedDir, entry.name), dest, { recursive: true });
-  }
-}
-
 async function seedHomeDir(homeDir: string) {
   for (const dir of DEFAULT_HOME_DIRS) {
     const target = join(homeDir, dir);
-    if (dir === 'Onboarding') {
-      await syncSeedDir(ONBOARDING_ADMIN_SEED, join(homeDir, 'Onboarding'));
-      await syncSeedDir(ONBOARDING_SEED, join(homeDir, 'Onboarding', 'User_Onboarding'));
-    } else if (!existsSync(target)) {
-      await mkdir(target, { recursive: true });
-    }
+    if (!existsSync(target)) await mkdir(target, { recursive: true });
   }
 }
 

src/servers/api/server-settings/server-settings.ts

@@ -26,11 +26,6 @@ serverSettingsRouter.get('/settings', async (ctx) => {
   return ctx.json(await readServerSettings());
 });
 
-serverSettingsRouter.get('/onboarding-complete', async (ctx) => {
-  const settings = await readServerSettings();
-  return ctx.json({ onboardingComplete: !!settings.onboardingComplete });
-});
-
 serverSettingsRouter.put('/', async (ctx) => {
   const body = await ctx.req.json();
   const settings = await readServerSettings();