fix(typecheck): narrow hook event counts

[chioarub]

Summary

Refs #1486.

Fixes a focused hook menu typecheck error by preserving the concrete hook grouping shape through the memoized count calculation.

What changed

• Added a local HooksByEventAndMatcher type for the grouped hook config map.
• Typed the per-event count accumulator and reducer callback so Object.values(matchers) stays IndividualHookConfig[] instead of degrading to unknown.

Why

The component already builds a HookEvent -> matcher -> hooks[] map, but the React compiler cache slot erased that shape before the reduce call. Restoring the explicit local type keeps the runtime behavior unchanged while removing the loose object-access error.

Validation

• bun run typecheck 2>&1 | tee /tmp/openclaude-typecheck-after-hook-counts.txt — still reports unrelated backlog errors, but grep -n "HooksConfigMenu" /tmp/openclaude-typecheck-after-hook-counts.txt has no matches
• git diff --check — passed
• bun run build — passed

Summary by CodeRabbit

Release Notes

• Refactor
  • Improved code type safety and reliability.

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This release contains no user-facing changes.

[chioarub]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 699e4d21-00e7-42e7-b7d8-9e9722ac58cf

📥 Commits

Reviewing files that changed from the base of the PR and between cfcc5d0 and 852d691.

📒 Files selected for processing (1)

• src/components/hooks/HooksConfigMenu.tsx

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📝 Walkthrough

Walkthrough

This PR adds explicit TypeScript type annotations to HooksConfigMenu.tsx to improve static typing of hook configuration data structures. A type alias is defined for the nested hook record structure and applied to computed values, accumulators, and helper function parameters.

Changes

Hook Configuration Type Annotations

Layer / File(s)	Summary
Hook data structure and helper function typing src/components/hooks/HooksConfigMenu.tsx	A HooksByEventAndMatcher type alias is defined for the nested record structure keyed by HookEvent and matcher name, applied to the derived hooksByEventAndMatcher value, and used to type the byEvent accumulator and _temp5 helper function parameters.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 Types bring clarity to the hook configuration flow,
Each annotation sharpens what TypeScript should know,
From nested records to helper function calls,
Static typing now stands proud in these halls!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: fixing a TypeScript type checking error related to hook event counts in the HooksConfigMenu component.
Description check	✅ Passed	The description covers the what, why, and validation, but is missing explicit testing sections from the template (bun run build, smoke, check checkboxes are not checked).
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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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🧪 Generate unit tests (beta)

• Create PR with unit tests

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[jatmn]

Thanks for the contribution. I do not see any actionable issues from my review.

@kevincodex1