auto-migrate teams_data.clanrating and team_members.points on tssbot boot (#1235)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

BOT/storage.py

@@ -215,6 +215,26 @@ async def _apply(conn: aiosqlite.Connection, statements: list[str]) -> None:
         await conn.execute(sql)
 
 
+async def _existing_columns(conn: aiosqlite.Connection, table: str) -> set[str]:
+    rows = await conn.execute_fetchall(f"PRAGMA table_info({table})")
+    return {row[1] for row in rows}
+
+
+async def _migrate(
+    conn: aiosqlite.Connection, table: str, additions: dict[str, str]
+) -> None:
+    """Add any missing columns. `additions` maps column name → full column DDL.
+
+    SQLite's ``ALTER TABLE ADD COLUMN`` only accepts a literal DEFAULT, which
+    is fine for all our additions. Existing rows pick up the DEFAULT value.
+    """
+    cols = await _existing_columns(conn, table)
+    for col, ddl in additions.items():
+        if col not in cols:
+            await conn.execute(f"ALTER TABLE {table} ADD COLUMN {ddl}")
+            log.info("migrated %s: added column %s", table, col)
+
+
 async def _init_battles_db() -> None:
     async with aiosqlite.connect(TSS_BATTLES_DB_PATH) as conn:
         for sql in _PRAGMAS:
@@ -234,6 +254,17 @@ async def _init_teams_db() -> None:
         await conn.execute(_TEAM_MEMBERS_SQL)
         await conn.execute(_TEAM_NAME_HISTORY_SQL)
         await conn.execute(_TEAMS_POINTS_SQL)
+
+        # Forward-only migrations for DBs created before a column landed.
+        # Keep CREATE TABLE statements above in sync — these only matter when
+        # the table already existed.
+        await _migrate(conn, "teams_data", {
+            "clanrating": "clanrating INTEGER",
+        })
+        await _migrate(conn, "team_members", {
+            "points": "points INTEGER NOT NULL DEFAULT 0",
+        })
+
         await _apply(conn, _TEAMS_DATA_INDEXES)
         await _apply(conn, _TEAM_MEMBERS_INDEXES)
         await _apply(conn, _TEAM_NAME_HISTORY_INDEXES)