Add /workflow, /skill-info, and /agent-info commands

- /workflow command to list and describe available workflows
  - Filter by category (health, deploy, incidents, sysadmin)
  - Show workflow steps and triggers
- /skill-info command for skill introspection
  - List scripts, triggers, and allowed tools
  - Show references and documentation
- /agent-info command with hierarchy visualization
  - Tree view of agent relationships
  - Model assignments (opus/sonnet/haiku) with visual indicators
  - Supervisor and subordinate information
- Updated shell completions with 19 aliases total
- Test suite now covers 27 tests

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

commands/README.md

@@ -19,6 +19,9 @@ Slash commands for quick actions. User-invoked (type `/command` to trigger).
 | `/debug` | `/diag`, `/diagnose` | Debug and troubleshoot config |
 | `/export` | `/session-export`, `/share` | Export session for sharing |
 | `/mcp-status` | `/mcp`, `/integrations` | Check MCP integrations |
+| `/workflow` | `/workflows`, `/wf` | List and describe workflows |
+| `/skill-info` | `/skill`, `/skills-info` | Show skill information |
+| `/agent-info` | `/agent`, `/agents` | Show agent information |
 | `/maintain` | `/maintenance`, `/admin` | Configuration maintenance |
 | `/programmer` | | Code development tasks |
 | `/gcal` | `/calendar`, `/cal` | Google Calendar access |