Preserve branches and AI settings on data reset

Reset now only clears transactions and scan logs. Branch config and
AI settings are no longer deleted when the user clicks Reset Data.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/server/src/routes/settings.ts

@@ -136,13 +136,11 @@ router.get('/backup', requireAuth, async (_req: AuthRequest, res) => {
   }
 });
 
-// POST /api/settings/reset — Delete all transactions, scan logs, and branch config (keeps users)
+// POST /api/settings/reset — Delete all transactions and scan logs (keeps users, branches, AI settings)
 router.post('/reset', requireAuth, async (req: AuthRequest, res) => {
   try {
     db.delete(transactions).run();
     db.delete(scanLogs).run();
-    db.delete(branchConfig).run();
-    db.delete(aiSettings).run();
 
     // Clear in-memory caches
     clearScanCaches();