fix: restore /api/stats route, remove dead player code, fix modal scroll

- app_sql.py: add get_overview_stats() with single SQL query (trip count,
  total km, duration, max speed, active DTC count)
- app.py: add /api/stats route (was missing after scp overwrote the file)
- local-videos.js: remove leftover old closePlayer/playVideo/renderFiles
  duplicate block that still had scrollIntoView and references to the old
  panel elements; new modal-based code is the only path now

Co-authored-by: Copilot <[email protected]>

modules/app_sql.py

@@ -317,6 +317,32 @@ def refresh_trips(force=False):
         return conn.execute("SELECT COUNT(*) FROM trips").fetchone()[0]
 
 
+def get_overview_stats():
+    conn = get_conn()
+    with _conn_lock:
+        row = conn.execute("""
+            SELECT COUNT(*), COALESCE(SUM(DISTANCE_KM),0),
+                   COALESCE(SUM(DURATION_SECONDS),0), COALESCE(MAX(MAX_SPEED_KMH),0)
+            FROM trips
+        """).fetchone()
+        dtc_row = conn.execute("""
+            SELECT COUNT(*) FROM dtc_codes WHERE cleared_at IS NULL
+        """).fetchone() if _table_exists(conn, "dtc_codes") else (0,)
+    return {
+        "trip_count": row[0],
+        "total_km": row[1],
+        "total_duration_s": row[2],
+        "all_time_max_speed": row[3],
+        "active_dtc": dtc_row[0] if dtc_row else 0,
+    }
+
+
+def _table_exists(conn, name):
+    return conn.execute(
+        "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", (name,)
+    ).fetchone() is not None
+
+
 def list_trips():
     refresh_trips()
     conn = get_conn()