chore: exclude repos/ from eslint

The vendored Effect subtree should not be linted.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ryanbas21

eslint.config.mjs

@@ -25,6 +25,7 @@ export default [
       '**/functions/**',
       '**/codegen/**',
       'apps/**',
+      'repos/**',
     ],
   },
   ...compat.extends('plugin:@typescript-eslint/recommended', 'plugin:prettier/recommended'),