feat(reset-credits): add banked rate-limit reset credits

.all-contributorsrc

@@ -766,6 +766,16 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "ellentane",
+      "name": "Jonáš Sivek",
+      "avatar_url": "https://avatars.githubusercontent.com/u/70338266?v=4",
+      "profile": "https://github.com/ellentane",
+      "contributions": [
+        "code",
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -585,6 +585,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/e
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/n3crosis"><img src="https://avatars.githubusercontent.com/u/11072158?v=4?s=100" width="100px;" alt="n3crosis"/><br /><sub><b>n3crosis</b></sub></a><br /><a href="https://github.com/Soju06/codex-lb/commits?author=n3crosis" title="Code">💻</a> <a href="https://github.com/Soju06/codex-lb/commits?author=n3crosis" title="Tests">⚠️</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/copilot"><img src="https://github.com/copilot.png?s=100" width="100px;" alt="copilot"/><br /><sub><b>copilot</b></sub></a><br /><a href="https://github.com/Soju06/codex-lb/commits?author=copilot" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/geoHeil"><img src="https://avatars.githubusercontent.com/u/1694964?v=4?s=100" width="100px;" alt="geoHeil"/><br /><sub><b>geoHeil</b></sub></a><br /><a href="https://github.com/Soju06/codex-lb/commits?author=geoHeil" title="Code">💻</a> <a href="https://github.com/Soju06/codex-lb/commits?author=geoHeil" title="Tests">⚠️</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/ellentane"><img src="https://avatars.githubusercontent.com/u/70338266?v=4?s=100" width="100px;" alt="Jonáš Sivek"/><br /><sub><b>Jonáš Sivek</b></sub></a><br /><a href="https://github.com/Soju06/codex-lb/commits?author=ellentane" title="Code">💻</a> <a href="https://github.com/Soju06/codex-lb/commits?author=ellentane" title="Tests">⚠️</a></td>
     </tr>
   </tbody>
 </table>

app/core/clients/headers.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+from app.core.utils.request_id import get_request_id
+
+
+def build_chatgpt_auth_headers(
+    access_token: str,
+    account_id: str | None,
+    *,
+    extra: dict[str, str] | None = None,
+) -> dict[str, str]:
+    """Build the headers required to call ChatGPT ``backend-api`` endpoints.
+
+    Includes the OAuth bearer token and the ``chatgpt-account-id`` header. The
+    account-id header is omitted when the id is a synthetic ``email_``/``local_``
+    prefix, matching upstream behavior. An active request id (if any) is attached.
+    """
+    headers: dict[str, str] = {
+        "Authorization": f"Bearer {access_token}",
+        "Accept": "application/json",
+    }
+    request_id = get_request_id()
+    if request_id:
+        headers["x-request-id"] = request_id
+    if account_id and not account_id.startswith(("email_", "local_")):
+        headers["chatgpt-account-id"] = account_id
+    if extra:
+        headers.update(extra)
+    return headers