- 8 exports: register/unregister/list/get/categories/lightThemes/darkThemes/clear
- kebab-case id validator; category whitelist (light/dark/high-contrast/seasonal)
- duplicate-id and shape errors with descriptive messages
- pure CommonJS, no IO, no Electron deps — T2 bootstrap will register all 37 themes
- 10 Jest tests covering register/unregister/get/categories/light+dark filters
- full suite: 77 suites, 924 tests passing; lint + Prettier clean
Amit Haridas
