Channel status is cached on App and refreshed when switching
to F5, not polled every render frame. Shows connected/disconnected
status and unread count per channel daemon.
Co-Developed-By: Kent Overstreet <kent.overstreet@linux.dev>
Only redraw when something actually changed. The 50ms render
interval still ticks (for process count updates) but no longer
triggers draws. Dirty is set by key events, mouse events,
resize, UI messages, turn completions, and DMN ticks.
Saves bandwidth over SSH and reduces CPU usage when idle.
Co-Developed-By: Kent Overstreet <kent.overstreet@linux.dev>
Mechanical rename: src/agent/ -> src/user/, all crate::agent:: ->
crate::user:: references updated. Binary poc-agent renamed to
consciousness with CLI name and user-facing strings updated.
Co-Authored-By: Proof of Concept <poc@bcachefs.org>
