STORY:
The Sessions Hub needed clear visual distinction between healthy
agents and those in trouble. Users couldn't quickly identify stuck
or dead agents in the control center view.
COLLABORATION:
We added 'stuck' and 'dead' states to the AgentSessionState type,
created deriveSessionState() with Zero-Failure-Check priority,
and implemented restrained visual treatments:
- stuck: pulsing red border (ring-2 ring-red-500 animate-pulse)
- dead: strong ghosting (opacity-40 grayscale)
- evicted: milder ghosting (opacity-60 grayscale-[0.5])
Session cards now display STUCK/OFFLINE badges with aria-labels
for accessibility.
DELIVERABLES:
- AgentSessionState extended with stuck/dead states
- deriveSessionState() derives from ZFC state priority
- Visual treatments for stuck/dead/evicted
- Accessible badges with aria-label
TESTS:
- tests/lib/agent-sessions-state.test.ts: 6/6 PASS
- tests/components/shared/status-utils-visual.test.ts: 4/4 PASS
- tests/components/sessions/session-feed-card-state.test.tsx: 4/4 PASS
CLOSES: bb-buff.3.2
BLOCKS: bb-buff.3.3
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