enchance data

db.py

@@ -35,11 +35,29 @@ def init_db():
             town_id     TEXT    PRIMARY KEY,
             town_name   TEXT,
             player      TEXT,
+            player_id   TEXT,
+            alliance_id TEXT,
             world_id    TEXT,
+            x           REAL,
+            y           REAL,
+            sea         INTEGER,
             data        TEXT    NOT NULL,  -- full JSON snapshot
             updated_at  TEXT    NOT NULL DEFAULT (datetime('now'))
         )
     ''')
 
+    # Migration: add new columns if upgrading an existing database
+    for _col in [
+        'ALTER TABLE town_state ADD COLUMN player_id   TEXT',
+        'ALTER TABLE town_state ADD COLUMN alliance_id TEXT',
+        'ALTER TABLE town_state ADD COLUMN x           REAL',
+        'ALTER TABLE town_state ADD COLUMN y           REAL',
+        'ALTER TABLE town_state ADD COLUMN sea         INTEGER',
+    ]:
+        try:
+            c.execute(_col)
+        except Exception:
+            pass  # column already exists
+
     conn.commit()
     conn.close()