new app store links feature

backend/app/main.py

@@ -23,6 +23,9 @@ def _migrate_add_missing_columns(sync_conn):
     pending = [
         ("station_config", "stream_url", sa.String(500), ""),
         ("station_config", "stream_metadata_url", sa.String(500), ""),
+        ("station_config", "play_store_icon_url", sa.String(500), ""),
+        ("station_config", "play_store_url", sa.String(500), ""),
+        ("station_config", "app_store_embed_html", sa.Text, ""),
     ]
 
     # Determine dialect
@@ -38,13 +41,21 @@ def _migrate_add_missing_columns(sync_conn):
 
         print(f"  → Migrating: adding column {table_name}.{col_name}")
 
+        # Determine SQL type from the column type object
+        if isinstance(col_type, sa.Text):
+            sql_type = "TEXT"
+        elif isinstance(col_type, sa.String):
+            sql_type = "VARCHAR(500)"
+        else:
+            sql_type = "TEXT"
+
         if dialect == "sqlite":
             sync_conn.execute(
                 sa.text(f'ALTER TABLE {table_name} ADD COLUMN "{col_name}" TEXT NOT NULL DEFAULT "{default}"')
             )
         else:
             sync_conn.execute(
-                sa.text(f'ALTER TABLE {table_name} ADD COLUMN "{col_name}" VARCHAR(500) NOT NULL DEFAULT "{default}"')
+                sa.text(f'ALTER TABLE {table_name} ADD COLUMN "{col_name}" {sql_type} NOT NULL DEFAULT "{default}"')
             )
 
         print(f"  ✓ Added {table_name}.{col_name}")