tsconfig.server.json sets rootDir:"server" so importing from
../src/lib/mux-protocol.ts violated the boundary and broke the CI
typecheck step. Reverted to local type definitions with a comment
linking to the canonical source.
Also adds tests to bring diff coverage above 80%:
- MuxProvider.test.tsx: 30 tests covering lifecycle, message handling,
and all terminal operations (subscribeTerminal, write, open, close,
resize, reconnect, cleanup)
- api-routes.test.ts: GET /api/sessions/patches coverage (success,
field shape, project filter, error path)
- useSessionEvents.test.ts: mux-path tests (muxSessions snapshot
dispatch, membership-change scheduleRefresh, mux-active SSE bypass,
cleanup on unmount)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
87c661332e