Phase 1 of v2 upgrade:
- Add PreToolUse hook for true "running" state before tool execution
- Add UserPromptSubmit hook to track user prompts and idle state
- Add Stop hook for idle detection when Claude finishes responding
- Add PreCompact hook to track context compaction events
- Enrich capture-event.sh with permission_mode, transcript_path, cwd
- Add CostTracker for session cost estimation
- Add SessionInfo type for tracking session state
- Show idle indicator (💤/⚡) and permission mode in header
- Show cost estimate when significant
- Show compaction count warning
- Show last user prompt preview
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Real-time terminal HUD for Claude Code showing:
- Context usage meter
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- Subagent visualization
- MCP status indicators
- Todo list tracking
- Modified files
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