fix(status): paginate metadata fetch to support large palaces

mempalace/miner.py

@@ -847,18 +847,24 @@ def status(palace_path: str):
         print("  Run: mempalace init <dir> then mempalace mine <dir>")
         return
 
-    # Count by wing and room
+    # Count by wing and room — paginate to avoid SQLite "too many SQL
+    # variables" error on large palaces (see #802, #850).
     total = col.count()
-    r = col.get(limit=total, include=["metadatas"]) if total else {"metadatas": []}
-    metas = r["metadatas"]
-
-    wing_rooms = defaultdict(lambda: defaultdict(int))
-    for m in metas:
-        m = m or {}
-        wing_rooms[m.get("wing", "?")][m.get("room", "?")] += 1
+    wing_rooms: dict = defaultdict(lambda: defaultdict(int))
+    batch_size = 5000
+    offset = 0
+    while offset < total:
+        r = col.get(limit=batch_size, offset=offset, include=["metadatas"])
+        batch = r["metadatas"]
+        if not batch:
+            break
+        for m in batch:
+            m = m or {}
+            wing_rooms[m.get("wing", "?")][m.get("room", "?")] += 1
+        offset += len(batch)
 
     print(f"\n{'=' * 55}")
-    print(f"  MemPalace Status — {len(metas)} drawers")
+    print(f"  MemPalace Status — {total} drawers")
     print(f"{'=' * 55}\n")
     for wing, rooms in sorted(wing_rooms.items()):
         print(f"  WING: {wing}")