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# Architectural Decision Record
## Static web app with typed JavaScript
The overlay loads inside OBS from a URL or `file://` path, with no install step for streamers.
Consequences: Ease of use
- Adding or updating the overlay is **copy or point OBS at `index.html`** (hosted or local); nothing to build before use.
- We avoid a toolchain that would complicate “drop this folder in” or quick Netlify-style hosting.
- Type safety is **optional IDE assistance**, not enforced at publish time (there is no `tsc` in CI by default).
This static, dependency-free shape exists **because** it stays easy to wire up as an OBS Browser Source while keeping the codebase maintainable through JSDoc and `types.d.ts`.
## BeatSaberPlus
Because I already use it.