Files
AutoGPT/autogpt_platform/frontend/src/app/api
Ubbe c5069ca48f fix(frontend): chat UX improvements (#11804)
### Changes 🏗️

<img width="1920" height="998" alt="Screenshot 2026-01-19 at 22 14 51"
src="https://github.com/user-attachments/assets/ecd1c241-6f77-4702-9774-5e58806b0b64"
/>

This PR lays the groundwork for the new UX of AutoGPT Copilot. 
- moves the Copilot to its own route `/copilot`
- Makes the Copilot the homepage when enabled
- Updates the labelling of the homepage icons
- Makes the Library the homepage when Copilot is disabled
- Improves Copilot's:
  - session handling
  - styles and UX
  - message parsing
  
### Other improvements

- Improve the log out UX by adding a new `/logout` page and using a
re-direct

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - [x] Run locally and test the above

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Launches the new Copilot experience and aligns API behavior with the
UI.
> 
> - **Routing/Home**: Add `/copilot` with `CopilotShell` (desktop
sidebar + mobile drawer), make homepage route flag-driven; update
login/signup/error redirects and root page to use `getHomepageRoute`.
> - **Chat UX**: Replace legacy chat with `components/contextual/Chat/*`
(new message list, bubbles, tool call/response formatting, stop button,
initial-prompt handling, refined streaming/error handling); remove old
platform chat components.
> - **Sessions**: Add paginated session list (infinite load),
auto-select/create logic, mobile/desktop navigation, and improved
session fetching/claiming guards.
> - **Auth/Logout**: New `/logout` flow with delayed redirect; gate
various queries on auth state and logout-in-progress.
> - **Backend**: `GET /api/chat/sessions/{id}` returns `null` instead of
404; service saves assistant message on `StreamFinish` to avoid loss and
prevents duplicate saves; OpenAPI updated accordingly.
> - **Misc**: Minor UI polish in library modals, loader styling, docs
(CONTRIBUTING) additions, and small formatting fixes in block docs
generator.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
1b4776dcf5. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
2026-01-22 16:43:42 +07:00
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