Two fixes from review:
- Liveness: /api/state isn't polled while online (only during login), so
hooking refreshBashTasks to it only populated on cold load. Bash tasks
start + finish asynchronously between turns, so add a light ~4s interval
to keep the tasks pill live; the /api/state-time call now just does the
first-paint populate. Doc note corrected to match.
- Move the blocking dir scan + per-file reads in /api/bash-tasks off the
async executor via tokio::task::spawn_blocking (damocles nit).
cd7846b348