v0.172.0: Mission side panel, add project folder, and PDF, MCP auth, and markdown fixes

New features

- Mission side panel - Added a unified Mission side panel for managing missions (app)
- Add project folder - New button to add a local project folder, streamlining local project setup (app)

Improvements

- Consistent text editing - Text-editing keys now behave consistently across all input fields

Bug fixes

- /clear preserves model - /clear now keeps your current model and autonomy settings
- Password-protected PDFs - Password-protected PDFs no longer lock up the session
- MCP authentication - MCP sign-ins now refresh tokens silently and avoid duplicate authentication prompts
- Markdown line breaks - Soft line breaks in markdown now render correctly