feat: show PR/CI status in task list and show commands

[bborn]

Summary

• Add --pr flag to task list command to display PR/CI status with colored badges
• Update task show to automatically display PR info and CI status when a task has an associated PR
• Include PR info in JSON output for both commands

Details

task list --pr

When the --pr flag is used, tasks with associated PRs show a colored badge indicating:

• F (red) - Checks failing
• P (green) - Checks passing
• W (yellow) - Checks running/pending
• R (green) - Ready to merge
• C (red) - Has conflicts
• M (purple) - Merged
• X (red) - Closed
• D (gray) - Draft
• O (green) - Open, no checks

task show <id>

Automatically fetches and displays PR info when a task has a branch with an associated PR:

• PR number and URL
• Colored CI status description (e.g., "Checks failing", "Ready to merge")

JSON Output

Both commands include PR info in JSON output when available:

{
  "pr": {
    "number": 123,
    "url": "https://github.com/...",
    "state": "OPEN",
    "check_state": "FAILURE",
    "description": "Checks failing"
  }
}

Test plan

• Build passes
• All existing tests pass
• Manual test: task list --pr shows PR status for tasks with PRs
• Manual test: task show <id> shows PR info for a task with a PR
• Manual test: JSON output includes PR info

🤖 Generated with Claude Code