[FEATURE]: Desktop: Clickable file paths in chat to open/reveal in Explorer

[DaveW001]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

Problem

In the OpenCode Desktop application, when an agent mentions file paths or directories in the chat conversation (e.g., in a list of completed tasks or when explaining code changes), these paths are currently rendered as plain text. Users have to manually navigate to these files in their file explorer or IDE, which adds unnecessary friction.

Proposed Solution

Make file paths and directory paths in the chat conversation clickable. When a user clicks on a path, the following behaviors should be supported in the Desktop app:

1. Reveal in File Explorer: For files, clicking (or a specific action like Ctrl+Click or a context menu option) should reveal the file in the native file explorer (Windows Explorer, macOS Finder, Linux File Manager).
2. Open Directory: If the path is a directory, it should open that directory in the native file explorer.
3. Open in Default Application: For common non-code files like Markdown (.md), HTML (.html), or PDFs, clicking the path should open the file in the system's default application.

Benefits

• Significantly speeds up the workflow of inspecting or managing files mentioned by the agent.
• Provides a more integrated and "desktop-native" experience.
• Reduces manual copy-pasting of paths.

Context

This is specifically for the Desktop application where native file system integration is a core strength. The goal is to make any path string recognized in the chat (especially those in backticks or markdown lists) interactive. This would include paths like runner.py, config/default.json, or .conductor/tracks/.../plan.md as seen in typical agent responses.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• [FEATURE]:[Web]: Clickable file:line references in messages (jump to file and line) #13430: Very similar request for clickable file:line references in chat messages (that one targets the Web UI, while this targets Desktop, but the core feature is the same)

[DaveW001]

This issue might be a duplicate of existing issues. Please check:

• [FEATURE]:[Web]: Clickable file:line references in messages (jump to file and line) #13430: Very similar request for clickable file:line references in chat messages (that one targets the Web UI, while this targets Desktop, but the core feature is the same)

I don't see this as a duplicate. We can combine the two, but I'd suggest that the items could be released independently. That suggests to me to keep them separate.