fix(tui): mouse click on list item does not update detail pane

[Copilot]

Mouse-click selection in the TUI work-item list visually moved the highlight but left the detail pane showing the previously selected item. Arrow-key navigation was unaffected.

Root cause

In blessed, clicking a different list item routes through the internal item.on('click') handler which calls self.select(item) → List.prototype.select(). That method emits 'select item', not 'select':

// blessed/lib/widgets/list.js – List.prototype.select
this.emit('select item', this.items[this.selected], this.selected);
// 'select' is only emitted on Enter or when clicking the already-selected item

The controller listened to 'select' (Enter/re-click) and 'keypress' (arrows), with no handler for 'select item'. The screen.on('mouse') fallback was also unreliable because it requires list.lpos to be populated.

Changes

• src/tui/controller.ts — adds listSelectItemHandler subscribed to list.on('select item', ...). This event fires via List.prototype.select() for every selection change—keyboard, mouse, and programmatic—making it the canonical place to refresh the detail pane. Reference stored as __opencode_select_item following the existing __opencode_select / __opencode_keypress pattern.

• tests/tui/tui-mouse-select.test.ts — regression tests covering:

  • detail pane updates when 'select item' fires for a newly clicked item
  • scroll position is preserved when re-selecting the currently selected item
  • __opencode_select_item handler is registered on startup

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/graphql
  • Triggering command: /usr/bin/gh gh issue create --repo TheWizardsCode/ContextHub --title Sample --body-file - (http block)
  • Triggering command: /usr/bin/gh gh issue create --repo TheWizardsCode/ContextHub --title Sample --body-file - bash (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[SorraTheOrc]

This automated review is currently blocked and this PR is not ready to merge until review checks can run.

• Tests: not executed (Ampa review container failed to start).
• Audit: not executed (blocked before checkout).
• Code Review: not executed (blocked before checkout).

Critical/Blocking issues

• Review infrastructure failure: wl ampa start-work crashed with a ReferenceError in the Ampa plugin, preventing container provisioning for PR checkout and checks.

Non-blocking issues

• None identified in this run.

[SorraTheOrc]

Automated review is currently blocked before merge-readiness checks can run.

• Canonical Worklog link resolved to (from linked issue Selecting work item in TUI using mouse does not update displayed conttent. #1330).
• Containerized review setup failed: Creating sandbox container to work on WL-0MNI39M81006L7NX...
  Syncing worklog data...
  Work item "WL-0MNI39M81006L7NX" already has container "ampa-pool-0". Entering...
  Syncing worklog data... raised in the Ampa plugin.
• Tests, audit, and code-review were not executed in an isolated review container.

A blocker work item has been opened to restore Ampa container startup so this review can be rerun: .

[SorraTheOrc]

Review update: automated checks are still blocked before merge-readiness validation can run.

• Canonical Worklog item: WL-0MNFV2SRS003ARVH (resolved from linked issue Selecting work item in TUI using mouse does not update displayed conttent. #1330 metadata).
• Review child item: WL-0MNI39M81006L7NX.
• Blocker: WL-0MNI3D00000917G0 (Ampa start-work fails with PLUGIN_OK ReferenceError in ampa.mjs).
• Audit, code-review, and test execution were not run because container startup failed.

Please resolve WL-0MNI3D00000917G0, then rerun automated PR review for #1331.