## 1. Build Targets

- [ ] 1.1 Add explicit macOS and Linux target framework/runtime build coverage.
- [ ] 1.2 Keep Windows-only implementations excluded from macOS and Linux builds.
- [ ] 1.3 Add platform service registration for unsupported or future macOS/Linux capture and hotkey implementations.

## 2. Tests

- [ ] 2.1 Split platform-specific tests by compilation target or runtime guard.
- [ ] 2.2 Add CI/build commands that verify Windows, macOS, and Linux compile targets.
- [ ] 2.3 Add at least one portable compile test that proves Windows-only packages are not required by non-Windows builds.