story-kit: create 110_story_add_test_coverage_for_api_settings_ts

.story_kit/work/1_upcoming/110_story_add_test_coverage_for_api_settings_ts.md

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+---
+name: "Add test coverage for api/settings.ts"
+---
+
+# Story 110: Add test coverage for api/settings.ts
+
+## User Story
+
+As a developer, I want better test coverage for api/settings.ts, so that regressions in the settings API wrapper are caught early.
+
+## Acceptance Criteria
+
+- [ ] api/settings.ts reaches 90% coverage (currently 55%, 18 lines missing)
+- [ ] Tests use fetch mocks to exercise all API wrapper functions
+- [ ] All vitest tests pass
+- [ ] No production code changes are made
+
+## Out of Scope
+
+- TBD