## Summary
- Refactor `useParseRouter` hook to improve code organization and
maintainability
- Add comprehensive unit tests for the `useParseRouter` hook covering
navigation state parsing, route matching, and edge cases

## Test plan
- Run `npm test` to verify all 842 tests pass
- The new tests in `src/__tests__/useParseRouter.test.ts` cover various
navigation scenarios

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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Co-authored-by: Will Chen <willchen90@gmail.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>