Dashboard usage records not updating — /internal/usage endpoint returns stale data

Describe the bug
The usage/billing history on the web dashboard (commandcode.ai) hasn't been updating. The /internal/usage API endpoint is returning stale data — the latest record is from July 2nd, even though new API calls have been made in the last 24+ hours.

Balance refresh still works fine, it's specifically the usage records endpoint that's stuck.

To Reproduce

1. Make a new API call with command-code
2. Go to commandcode.ai dashboard → usage history
3. Latest API call not listed
4. Or directly: curl 'https://api.commandcode.ai/internal/usage?limit=5' with valid session cookie — observe latest createdAt is stuck at July 2nd, no newer records appear

Expected behavior
Usage records should appear within minutes of each API call.

Additional context

• Balance/credits refresh works normally
• The API returns HTTP 200 with data, but the data itself is stale
• This affects both the web dashboard and any third-party apps relying on this endpoint

Commencez par localiser le gestionnaire de l’endpoint /internal/usage et suivre la façon dont il lit les enregistrements d’utilisation ; comparez ce chemin avec celui de l’actualisation du solde, qui fonctionne toujours. Reproduisez la réponse obsolète avec la requête curl et vérifiez que c’est terminé lorsque de nouveaux appels d’API apparaissent dans l’endpoint et le dashboard en quelques minutes.