story-kit: create 113_story_add_test_coverage_for_usepathcompletion_hook

.story_kit/work/1_upcoming/113_story_add_test_coverage_for_usepathcompletion_hook.md

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+---
+name: "Add test coverage for usePathCompletion hook"
+---
+
+# Story 113: Add test coverage for usePathCompletion hook
+
+## User Story
+
+As a developer, I want better test coverage for the usePathCompletion hook, so that regressions in path completion behavior are caught early.
+
+## Acceptance Criteria
+
+- [ ] usePathCompletion.ts reaches 95% coverage (currently 81.7%, 26 lines missing)
+- [ ] Tests use renderHook to exercise all hook code paths
+- [ ] All vitest tests pass
+- [ ] No production code changes are made
+
+## Out of Scope
+
+- TBD