RFC-001: Multi-Agent Visual Indicator for Active Sessions

[vikramrajj]

Summary

This PR adds RFC-001 — a detailed design proposal for implementing a multi-agent visual indicator in the Command Code CLI, as requested in issue #817.

What's Included

• RFC document (rfcs/001-multi-agent-visual-indicator.md) with:
  • TypeScript interfaces for agent status tracking
  • Component designs (AgentBadge, AgentStatusBar)
  • Integration approach with existing session state
  • Settings schema for user configuration
  • Visual mockups for compact/detailed/minimal styles
  • Phased migration path (passive → interactive → advanced)

Key Design Decisions

1. Three display styles: compact (default), detailed, minimal
2. Status lifecycle: queued → running → completed/failed/killed
3. Non-intrusive: Status bar sits above conversation, auto-hides when no agents active
4. Configurable: Via agentIndicator settings object
5. Phased rollout: Start with passive indicator, add interactivity later

Visual Inspiration

• T3 Code (Theo) — agent badges with spinners
• Codex — agent tiles with status indicators

Next Steps

If approved, implementation would proceed in three phases:

1. Passive indicator (read-only display)
2. Interactive controls (expand, kill, view output)
3. Advanced features (timeline, metrics, streaming)

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Related issue: #817