IPC: Expose all terminal actions

[jamesdowzard]

Summary

Expands the IPC system to expose ALL terminal actions (~50 total) and adds advanced screen dump capabilities.

This PR builds on the existing IPC foundation to enable comprehensive programmatic control of the terminal for automation, testing, and external integrations.

Changes

1. All Actions Exposed via IPC

• ListActions now returns all ~50 actions from bindings/mod.rs
• Includes: search, scrolling, tabs, splits, bookmarks, SSH profiles, snippets, broadcast mode, directory jumper, and more
• Actions are documented with examples: selecttab(N), gotobookmark(N), run(COMMAND), etc.

2. Generic Action Execution

• TriggerAction refactored to use Action::from(String) for universal action parsing
• New execute_action() method in screen/mod.rs provides centralized action dispatch
• Supports all action types with proper error handling for IPC-incompatible actions (Vi motions, hints, etc.)

3. JSON Screen Dumps

• New ScreenDumpJson response format with structured cell data
• Each cell includes: character, bold/italic/underline flags (colors coming in future update)
• Enables rich terminal output analysis for testing and automation

4. Line Selection for Screen Dumps

• DumpScreen now accepts start_line and end_line parameters
• Supports both format: "text" (default) and format: "json"
• Enables efficient partial screen dumps for large terminals

5. Tab Information

• New ListTabs command returns array of tab metadata
• Each tab includes: index, title, and is_current flag
• Useful for multi-tab automation and state tracking

Files Changed

• frontends/rioterm/src/ipc.rs: Updated command/response enums, added ScreenCell and TabInfo structs
• frontends/rioterm/src/application.rs: Implemented DumpScreen format/line selection and ListTabs handler
• frontends/rioterm/src/screen/mod.rs: Added comprehensive execute_action() method

Usage Examples

# List all available actions
midterm --list-actions

# Trigger any action
midterm --action createtab
midterm --action "selecttab(2)"
midterm --action "run(ls -la)"

# Dump screen as JSON with line range
midterm --dump-screen --format json --lines 0-10

# List all tabs
midterm --list-tabs

Testing

• Build passes: cargo build -p rioterm
• All action handlers delegate to existing screen methods
• JSON serialization working for screen dumps and tab lists

Future Enhancements

• Color information in JSON screen dumps (requires palette access)
• Tab title extraction from context manager
• Additional IPC commands for split management

[raphamorim]

hey thanks for the pr, but the pr is for your fork no? it even rename the app. Thanks for the pr 🙏

[jamesdowzard]

Hey, you're right - sorry about that. I'm working on a personal fork called Midterm, just customising things for my own use. GitHub's PR UI defaulted to upstream and I didn't catch it before submitting.

I've now properly separated my fork so this won't happen again. If I do build anything useful that might benefit Rio, happy to share it with you to incorporate if you'd like.

I'm crediting Rio in my repo description as "Powered by Rio" and linking back to your repo. Let me know if you'd prefer a different attribution.

[raphamorim]

No stress with it! Best luck in the fork work btw 🙏