fix: env.py reads FABLEDNETMON_DATABASE_URL and honors URL set by migration_runner

fablednetmon/migrations/env.py

@@ -23,12 +23,21 @@ def get_url() -> str:
         url = cfg.get("database", {}).get("url", "")
     except FileNotFoundError:
         url = ""
-    return os.environ.get("FABLEDNETMON_DATABASE__URL", url)
+    return (
+        os.environ.get("FABLEDNETMON_DATABASE_URL")
+        or os.environ.get("FABLEDNETMON_DATABASE__URL")
+        or url
+    )
+
+
+def _resolved_url() -> str:
+    """Return URL from migration_runner config if set, else fall back to get_url()."""
+    return config.get_main_option("sqlalchemy.url") or get_url()
 
 
 def run_migrations_offline() -> None:
     context.configure(
-        url=get_url(), target_metadata=target_metadata,
+        url=_resolved_url(), target_metadata=target_metadata,
         literal_binds=True, dialect_opts={"paramstyle": "named"},
     )
     with context.begin_transaction():
@@ -43,7 +52,7 @@ def do_run_migrations(connection: Connection) -> None:
 
 async def run_async_migrations() -> None:
     cfg = config.get_section(config.config_ini_section, {})
-    cfg["sqlalchemy.url"] = get_url()
+    cfg["sqlalchemy.url"] = _resolved_url()
     connectable = async_engine_from_config(cfg, prefix="sqlalchemy.", poolclass=pool.NullPool)
     async with connectable.connect() as connection:
         await connection.run_sync(do_run_migrations)