[alotth]

Issue for this PR

Closes #15747

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

This PR introduces a plugin session webview bridge and related plumbing so plugins can expose session UI and communicate with the host in a request/response flow.

Main changes:

• Adds plugin session UI contributions via ui.session.tabs and ui.session.buttons
• Adds bridge protocol events (opencode.bridge.host, opencode.bridge.request, opencode.bridge.response)
• Adds base bridge file operations, including file.write with optimistic concurrency (expectedHash)
• Serves plugin webview assets through global plugin routes
• Allows CORS preflight for global plugin paths
• Updates docs for plugin bridge usage and desktop troubleshooting

Context:

• Related to Plugin cannot update FileTime after modifying files, causing "file modified since last read" errors #11249 because this PR adds plugin bridge file-write capabilities (file.write+expectedHash) that address the same safe plugin-driven write/update concerns, but through a webview bridge path.
• Related to [FEATURE]: Generic UI Intent Channel for cross-client plugin-driven UX #6330 (this PR is a narrower incremental step)

How did you verify your code works?

• Ran repository pre-push checks locally (including bun turbo typecheck)
• Pre-push hook completed successfully before pushing branch updates

Screenshots / recordings

Session side-panel / webview integration updates are included in this PR.

If maintainers want, I can attach a short recording in a follow-up comment.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍

[alotth]

Im motivate to do this, because I'm working now in orchestration of the agents by visualizing the kanban tasks and roadmaps, integrating on opencode by this plugin https://github.com/alotth/mapctx/tree/main/packages/opencode-plugin with the patterns that this PR adds.

[rekram1-node]

Automated PR Cleanup

Thank you for contributing to opencode.

Due to the high volume of PRs from users and AI agents, we periodically close older PRs using automated criteria so maintainers can focus review time on the most active and community-supported contributions.

This PR was closed because it matched the following cleanup criteria:

• The PR was created more than 1 month ago
• The PR had fewer than 2 positive reactions
• Positive reactions are counted as thumbs-up, heart, celebration, or rocket reactions on the PR

PRs created within the last month are not affected by this cleanup.

If you believe this PR was closed incorrectly, or if you are still actively working on it, please leave a comment explaining why it should be reopened. A maintainer can review and reopen it if appropriate.

Thanks again for taking the time to contribute.

[jensenojs]

I'm a little disappointed to find out that this PR has been closed.