fix(shell): validate taos:activate-window event shape (#585 nit)

[jaylfc]

Tidy for the kilo review nits on #585. Replaces the blind CustomEvent<{windowId?}> cast in the taos:activate-window handler with a runtime check that detail.windowId is a string, and adds the (stable) setActiveWindowId to the effect deps. No behaviour change — the original cast was already guarded by optional chaining + an if. Build clean.

Summary by CodeRabbit

• Bug Fixes
  • Improved robustness of window-activation functionality by adding runtime validation for event data to ensure stable window management.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 0de54f00-4bf1-4a12-8731-bcdb4d5ee8e7

📥 Commits

Reviewing files that changed from the base of the PR and between cbf4f46 and ba88f85.

📒 Files selected for processing (1)

• desktop/src/App.tsx

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📝 Walkthrough

Walkthrough

A single event listener in App.tsx is updated to add runtime type validation. The "taos:activate-window" handler now checks that the event detail contains a valid string windowId before updating state, replacing an unchecked cast with defensive validation.

Changes

Window Activation Event Validation

Layer / File(s)	Summary
Runtime validation for activate-window event desktop/src/App.tsx	The "taos:activate-window" event listener validates detail.windowId is a string at runtime before calling setActiveWindowId, and the useEffect dependency array is updated to include setActiveWindowId.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~7 minutes

Poem

A guardian shield now guards the gate,
Type-checking at the runtime state,
No blind trust in the window's call—
Safe validation conquers all! 🐰✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the specific fix: validating the taos:activate-window event shape instead of relying on a type cast. It accurately describes the main change in the changeset.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/activate-window-event-typecheck

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