Add office fleet visibility and state mapping

[iamlukethedev]

Summary

• add a configurable office agent state mapping preference for local and remote presence
• show a stronger fleet visibility HUD in the office with local vs remote counts and highlighted active/error agents
• capture remaining discussion Real-world multi-agent fleet feedback — 9 agents in production #8 ideas in a backlog markdown file
• fix the office state mapping callback typing so production builds pass

Testing

• npm run test -- --run tests/unit/officeAgentStateMapping.test.ts tests/unit/studioSettings.test.ts tests/unit/officeEventTriggers.test.ts
• npm run build
• npm run smoke:dev-server
• npm run lint (known pre-existing repo errors remain in AgentBrainPanel.tsx and useOnboardingState.ts)
• manual office walkthrough with demo backend and state-mapping interaction

Artifacts

• office_state_mapping_success_demo.mp4
• Office fleet visibility HUD
• Office state mapping settings

_{To show artifacts inline, enable in settings.}