### 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 -->
## 🧢 Overview
This PR migrates the AutoGPT Platform frontend from [yarn
1](https://classic.yarnpkg.com/lang/en/) to [pnpm](https://pnpm.io/)
using **corepack** for automatic package manager management.
**yarn1** is not longer maintained and a bit old, moving to **pnpm** we
get:
- ⚡ Significantly faster install times,
- 💾 Better disk space efficiency,
- 🛠️ Better community support and maintenance,
- 💆🏽♂️ Config swap very easy
## 🏗️ Changes
### Package Management Migration
- updated [corepack](https://github.com/nodejs/corepack) to use
[pnpm](https://pnpm.io/)
- Deleted `yarn.lock` and generated new `pnpm-lock.yaml`
- Updated `.gitignore`
### Documentation Updates
- `frontend/README.md`:
- added comprehensive tech stack overview with links
- updated all commands to use pnpm
- added corepack setup instructions
- and included migration disclaimer for yarn users
- `backend/README.md`:
- Updated installation instructions to use pnpm with corepack
- `AGENTS.md`:
- Updated testing commands from yarn to pnpm
### CI/CD & Infrastructure
- **GitHub Workflows** :
- updated all jobs to use pnpm with corepack enable
- cleaned FE Playwright test workflow to avoid Sentry noise
- **Dockerfile**:
- updated to use pnpm with corepack, changed lock file reference, and
updated cache mount path
### 📋 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:
**Test Plan:**
> assuming you are on the `frontend` folder
- [x] Clean installation works: `rm -rf node_modules && corepack enable
&& pnpm install`
- [x] Development server starts correctly: `pnpm dev`
- [x] Build process works: `pnpm build`
- [x] Linting and formatting work: `pnpm lint` and `pnpm format`
- [x] Type checking works: `pnpm type-check`
- [x] Tests run successfully: `pnpm test`
- [x] Storybook starts correctly: `pnpm storybook`
- [x] Docker build succeeds with new pnpm configuration
- [x] GitHub Actions workflow passes with pnpm commands
#### For configuration changes:
- [x] `.env.example` is updated or already compatible with my changes
- [x] `docker-compose.yml` is updated or already compatible with my
changes
- [x] I have included a list of my configuration changes in the PR
description (under **Changes**)
## Summary
- refine contribution instructions in `autogpt_platform/AGENTS.md`
## Testing
- `pre-commit` *(fails to fetch hooks due to no network access)*
#### 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:
<!-- Put your test plan here: -->
- [x] Docs only hcnage
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
