fixed db problem

server/db_py.py

@@ -6,9 +6,15 @@ import threading
 from contextlib import contextmanager
 
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
-DB_PATH = os.path.join(BASE_DIR, "dashboard.db")
+_DEFAULT_DB_PATH = os.path.join(BASE_DIR, "data", "dashboard.db")
+if os.path.exists("/.dockerenv"):
+    _DEFAULT_DB_PATH = "/app/data/dashboard.db"
+
+DB_PATH = os.getenv("DASHBOARD_DB_PATH", _DEFAULT_DB_PATH)
 CONFIG_JSON = os.path.join(BASE_DIR, "config.json")
 
+os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
+
 _conn = sqlite3.connect(DB_PATH, check_same_thread=False)
 _conn.row_factory = sqlite3.Row
 _lock = threading.RLock()
@@ -27,7 +33,12 @@ def _tx():
 
 def _init_db():
     with _tx():
-        _conn.execute("PRAGMA journal_mode=WAL;")
+        try:
+            _conn.execute("PRAGMA journal_mode=WAL;")
+        except sqlite3.OperationalError as exc:
+            # Fallback for filesystems where WAL is unavailable.
+            print(f"[db] WAL unavailable ({exc}); falling back to DELETE journal mode")
+            _conn.execute("PRAGMA journal_mode=DELETE;")
         _conn.executescript(
             """
             CREATE TABLE IF NOT EXISTS config (