Summary

This PR improves session routing and workspace-oriented chat workflows.

What changed

• added a new session mode alongside the existing research mode
• added a session type selector for new chats
• prevented workspace QA sessions from triggering the research intake / pipeline onboarding flow
• injected lightweight session context so agents treat workspace QA sessions as file/code questions by default
• added session mode badges in the sidebar
• added a direct chat entrypoint from Project Files
  • hovering a file or folder now shows a chat action
  • clicking it starts a new workspace QA session
  • pre-fills a targeted question about that file or directory
• improved empty-state UI styling for the guided starter and session mode cards
• fixed sidebar session metadata alignment
• fixed Gemini session message counts so historical sessions no longer display incorrectly

Why

Previously all new sessions defaulted to the research-oriented workflow, which polluted research sessions and added unnecessary context when users only wanted to ask questions about repository files or implementation details.

This change introduces a lightweight workspace QA path and makes file-to-chat workflows much faster.

Validation

• ran

dr-claw@0.1.5 typecheck
tsc --noEmit -p tsconfig.json