Add: Event detail view in history browser

[FL4TLiN3]

Summary

• Add BrowsingEventDetailState to support event detail view navigation
• Create BrowsingEventDetailInput component to display event details (type, step, timestamp, id, run id)
• Update BrowsingEventsInput to support event selection with onEventSelect callback
• Add SELECT_EVENT and GO_BACK_FROM_EVENT_DETAIL actions to input state machine
• Integrate event selection flow in browser router and history actions

Closes #41

Test plan

• Navigate to history browser
• Select a run to view checkpoints
• Select a checkpoint to view events
• Select an event to view details
• Press 'b' or Esc to go back to events list

---

Note

Adds selectable event detail view in the history browser with navigation and state/actions wiring.

• TUI (history browser):
  • Event detail view: New BrowsingEventDetailInput component and BrowsingEventDetailState.
  • Navigation: Added SELECT_EVENT and GO_BACK_FROM_EVENT_DETAIL actions; updated reducer and BrowserRouter to route to detail view and back.
  • Events list: BrowsingEventsInput now supports selection via onEventSelect and updated title hints.
  • Context/Actions: InputAreaContext extended with onEventSelect; use-history-actions and use-app-state integrated for event selection and back handling.
• Docs: AGENTS.md updates to changeset workflow and checklists.
• Changeset: Patch bumps for @perstack/* packages and perstack.

^{Written by Cursor Bugbot for commit 4ba627c. This will update automatically on new commits. Configure here.}

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
perstack	Ready	Preview	Comment	Dec 4, 2025 7:03am

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[vercel]

Deployment failed with the following error:

Resource is limited - try again in 11 hours (more than 100, code: "api-deployments-free-per-day").

Learn More: https://vercel.com/fl4tlin3s-projects?upgradeToPro=build-rate-limit