feat: export local and view exported & project sessions in web UI

[ndraiman]

Draft PR: Session Export and Local Viewing

Looking For Feedback

Note

This is a draft PR looking for feedback on the implementation approach and user experience.

Current Draft Limitation:

• Need to run opencode serve.
• Need to run web ui dev server bun --cwd packages/web dev.
  • Can also build using astro node adapter and run with bun
• Web UI port is hardcoded

Screen.Recording.2025-06-27.at.18.12.03-720.mp4

Summary

This PR adds the ability to export chat sessions to local storage and view them through a local web interface. Users can now:

• Export active sessions to local JSON files stored in the config directory
• Access exported sessions via local URLs (e.g., http://localhost:4321/local/{sessionId})
• Browse and manage exported sessions through new API endpoints

Key Changes

Server

• New API endpoints (packages/opencode/src/server/server.ts):

  • POST /session/:id/export - Export a session to local storage
  • GET /session/export - List all exported sessions
  • GET /session/:id/export - Retrieve specific exported session data

• Session export functionality (packages/opencode/src/session/index.ts):

  • Export sessions as JSON files to ~/.config/opencode/session-exports/
  • Include session metadata, messages, and export timestamp
  • Generate local URLs for web access

TUI

• New export command (packages/tui/internal/commands/command.go):
  • Added SessionExportCommand with trigger "export"
• Export functionality (packages/tui/internal/tui/tui.go):
  • Export current session and copy local URL to clipboard
  • Success/error toast notifications
• Generated client updates - Updated OpenAPI spec and Go client code

User Experience

1. User runs export command in active session
2. Session gets exported to local JSON file
3. Local URL (http://localhost:4321/local/{sessionId}) copied to clipboard
4. User can access exported session via browser at that URL

Technical Details

• Export files stored in ~/.config/opencode/session-exports/{sessionId}.json
• Local web server runs on port 4321
• Exported sessions include full conversation history and metadata
• Error handling for missing sessions and file operations

[ndraiman]

Fixed conflicts with the new SDKs.
But now I need the Client SDK to be regenerated to support the Export commands

[ndraiman]

Added a small POC in a separate branch with added Streaming support for messages API and allowing to invoke the agent from the Web UI:

Screen.Recording.2025-06-28.at.15.56.43.mp4

To view the diff with this PR click here

It's still rough and first draft, didn't want to modify the Share.tsx component for now to avoid conflicts with your changes.

Would love your opinion on this whole direction @thdxr @adamdotdevin 🙏🏻