This PR adds support for configs to specify a forced login method (chatgpt or api) as well as a forced chatgpt account id. This lets enterprises uses [managed configs](https://developers.openai.com/codex/security#managed-configuration) to force all employees to use their company's workspace instead of their own or any other. When a workspace id is set, a query param is sent to the login flow which auto-selects the given workspace or errors if the user isn't a member of it. This PR is large but a large % of it is tests, wiring, and required formatting changes. API login with chatgpt forced <img width="1592" height="116" alt="CleanShot 2025-10-19 at 22 40 04" src="https://github.com/user-attachments/assets/560c6bb4-a20a-4a37-95af-93df39d057dd" /> ChatGPT login with api forced <img width="1018" height="100" alt="CleanShot 2025-10-19 at 22 40 29" src="https://github.com/user-attachments/assets/d010bbbb-9c8d-4227-9eda-e55bf043b4af" /> Onboarding with api forced <img width="892" height="460" alt="CleanShot 2025-10-19 at 22 41 02" src="https://github.com/user-attachments/assets/cc0ed45c-b257-4d62-a32e-6ca7514b5edd" /> Onboarding with ChatGPT forced <img width="1154" height="426" alt="CleanShot 2025-10-19 at 22 41 27" src="https://github.com/user-attachments/assets/41c41417-dc68-4bb4-b3e7-3b7769f7e6a1" /> Logging in with the wrong workspace <img width="2222" height="84" alt="CleanShot 2025-10-19 at 22 42 31" src="https://github.com/user-attachments/assets/0ff4222c-f626-4dd3-b035-0b7fe998a046" />