* feat: add PR checks workflow for automated testing and validation
* feat(client): hide the composer while the Context tab is active
The view ring mounts one view at a time, so the tab's .lc-root existing
inside the shell scrollport is exactly 'Context tab active' — a single
:has() rule hides the sticky composer seat and hands its height to the
dashboard. display:none keeps the seat mounted, so drafts survive the
round trip.
Interactive takeovers (approval / question / plan-review panels) replace
the bar inside the same seat; keep the seat visible while one is present
so a pending decision is never hidden behind the focus mode.
Closes#11
* ci: build before test in PR checks
Client tests mount the built bundle (viewBed.ts reads lib/client.js), so
pnpm test without a prior build fails with ENOENT in a clean checkout.
Bowen Liang
e53c375a15