fix: HA sync uses per-printer autocommit connections to prevent database locked

app.py

@@ -2040,21 +2040,26 @@ def _ha_sync_once():
         states = _ha_fetch_all_states(ha_url, ha_token)
         if not states:
             return
-        # Ouvrir la connexion d'écriture APRÈS l'appel HTTP (qui peut être long)
+        # Lire les imprimantes avec une connexion courte (lecture seule)
-        conn = sqlite3.connect(DATABASE, timeout=30)
+        _rc = sqlite3.connect(DATABASE, timeout=15)
-        conn.row_factory = sqlite3.Row
+        _rc.row_factory = sqlite3.Row
-        conn.execute('PRAGMA journal_mode=WAL')
+        printers = _rc.execute(
-        printers = conn.execute(
             "SELECT id, name, ha_entity_prefix FROM printers "
             "WHERE ha_entity_prefix IS NOT NULL AND ha_entity_prefix != ''"
         ).fetchall()
+        _rc.close()
+
         now_iso = datetime.now(timezone.utc).replace(tzinfo=None).isoformat()
         window  = (datetime.now(timezone.utc).replace(tzinfo=None) + timedelta(minutes=30)).isoformat()
         for p in printers:
             prefix = p['ha_entity_prefix']
             ha_status = states.get(f'sensor.{prefix}_etat_de_l_impression', 'unknown')
             ha_error  = states.get(f'binary_sensor.{prefix}_erreur_d_impression', 'off')
-            slot = conn.execute(
+            # Connexion courte par imprimante : on lit, on écrit, on commit, on ferme
+            wc = sqlite3.connect(DATABASE, timeout=15, isolation_level=None)
+            wc.row_factory = sqlite3.Row
+            try:
+                slot = wc.execute(
                     "SELECT id, status FROM print_slots "
                     "WHERE printer_id=? AND status IN ('planned','running') "
                     "AND planned_start <= ? AND planned_end >= ? "
@@ -2071,15 +2076,13 @@ def _ha_sync_once():
                 elif ha_status == 'running' and slot['status'] == 'planned':
                     new_status = 'running'
                 if new_status:
-                conn.execute('UPDATE print_slots SET status=? WHERE id=?',
+                    wc.execute('UPDATE print_slots SET status=? WHERE id=?',
                                (new_status, slot['id']))
                 if ha_ignored > 0:
-                conn.execute('UPDATE print_slots SET pieces_ignored=? WHERE id=?',
+                    wc.execute('UPDATE print_slots SET pieces_ignored=? WHERE id=?',
                                (ha_ignored, slot['id']))
-        try:
-            conn.commit()
             finally:
-            conn.close()
+                wc.close()
     except Exception as e:
         print(f'[HA sync] {e}')