fix: auto-migrate models table schema if old columns present

app/main.py

@@ -34,6 +34,14 @@ def get_db() -> sqlite3.Connection:
 
 def init_db():
     db = get_db()
+    # Автомиграция таблицы models если создана со старой схемой
+    try:
+        cols = [r[1] for r in db.execute("PRAGMA table_info(models)").fetchall()]
+        if cols and "raw_base" not in cols:
+            db.execute("DROP TABLE models")
+    except Exception:
+        pass
+
     db.executescript("""
         CREATE TABLE IF NOT EXISTS arena_text_leaderboard (
             rank INTEGER,