fix: add WAL mode for session SQLite to prevent 'database is locked', persist active account tab in localStorage

telegram_scraper_with_forwarding.py

@@ -79,6 +79,19 @@ class ForwardingRule:
     enabled: bool = True
 
 
+def _ensure_session_wal(session_path: str) -> None:
+    db_path = session_path if session_path.endswith(".session") else f"{session_path}.session"
+    if not Path(db_path).exists():
+        return
+    try:
+        conn = sqlite3.connect(db_path, timeout=1)
+        conn.execute("PRAGMA journal_mode=WAL;")
+        conn.execute("PRAGMA synchronous=NORMAL;")
+        conn.close()
+    except Exception:
+        pass
+
+
 class OptimizedTelegramScraper:
     def __init__(self, account_id: Optional[str] = None):
         self.account_id = account_id
@@ -1496,6 +1509,7 @@ class OptimizedTelegramScraper:
                 return False
 
         session = account_session_path(self.SESSION_DIR, self.account_id or "session")
+        _ensure_session_wal(session)
         self.client = TelegramClient(
             session,
             self.state["api_id"],

webui/app.js

@@ -177,6 +177,7 @@ function renderAccountPanel(accountId) {
 function switchAccount(accountId) {
   if (state.activeAccount === accountId) return;
   state.activeAccount = accountId;
+  localStorage.setItem("activeAccount", accountId);
 
   // Update tabs
   document.querySelectorAll(".account-tab").forEach((tab) => {
@@ -488,8 +489,9 @@ async function loadAccounts() {
   // Render panels for each account
   accounts.forEach((acc) => renderAccountPanel(acc.id));
 
-  // Determine active account
+  // Determine active account (persisted across reloads)
-  const activeId = state.activeAccount || accounts[0].id;
+  const savedId = localStorage.getItem("activeAccount");
+  const activeId = (savedId && accounts.some(a => a.id === savedId)) ? savedId : (state.activeAccount || accounts[0].id);
   switchAccount(activeId);
 
   // Update settings

webui_server.py

@@ -37,6 +37,7 @@ from health import health_payload
 from scraper_jobs import ScraperJobService
 from telethon import TelegramClient
 from telethon.errors import SessionPasswordNeededError
+from telegram_scraper_with_forwarding import _ensure_session_wal
 
 
 BASE_DIR = Path(__file__).resolve().parent
@@ -462,6 +463,7 @@ class TelegramAuthManager:
         if not api_id or not api_hash:
             raise RuntimeError("Save api_id and api_hash first for this account.")
         if account_id not in self.clients or self.clients[account_id] is None:
+            _ensure_session_wal(account_session_path(SESSION_DIR, account_id))
             self.clients[account_id] = TelegramClient(
                 account_session_path(SESSION_DIR, account_id),
                 api_id,