fix: escape % characters in DATABASE for Alembic config

Signed-off-by: ESnark <31977180+ESnark@users.noreply.github.com>

Author: ESnark

mcpgateway/alembic/env.py

@@ -165,9 +165,11 @@ def _modify_metadata_for_mariadb():
 # my_important_option = config.get_main_option("my_important_option")
 # ... etc.
 
+# Escape '%' characters in URL to avoid configparser interpolation errors
+# (e.g., URL-encoded passwords like %40 for '@')
 config.set_main_option(
     "sqlalchemy.url",
-    settings.database_url,
+    settings.database_url.replace("%", "%%"),
 )
 
 

mcpgateway/bootstrap_db.py

@@ -257,7 +257,10 @@ async def main() -> None:
 
     with engine.begin() as conn:
         cfg.attributes["connection"] = conn
-        cfg.set_main_option("sqlalchemy.url", settings.database_url)
+        # Escape '%' characters in URL to avoid configparser interpolation errors
+        # (e.g., URL-encoded passwords like %40 for '@')
+        escaped_url = settings.database_url.replace("%", "%%")
+        cfg.set_main_option("sqlalchemy.url", escaped_url)
 
         insp = inspect(conn)