Consolidate workflows and tools from commands repository

Repository Restructure:
- Move all 83 agent .md files to agents/ subdirectory
- Add 15 workflow orchestrators from commands repo to workflows/
- Add 42 development tools from commands repo to tools/
- Update README for unified repository structure

The commands repository functionality is now fully integrated, providing
complete workflow orchestration and development tooling alongside agents.

Directory Structure:
- agents/    - 83 specialized AI agents
- workflows/ - 15 multi-agent orchestration commands
- tools/     - 42 focused development utilities

No breaking changes to agent functionality - all agents remain accessible
with same names and behavior. Adds workflow and tool commands for enhanced
multi-agent coordination capabilities.

workflows/improve-agent.md

@@ -0,0 +1,17 @@
+---
+model: claude-opus-4-1
+---
+
+Improve an existing agent based on recent performance:
+
+1. Analyze recent uses of: $ARGUMENTS
+2. Identify patterns in:
+   - Failed tasks
+   - User corrections
+   - Suboptimal outputs
+3. Update the agent's prompt with:
+   - New examples
+   - Clarified instructions
+   - Additional constraints
+4. Test on recent scenarios
+5. Save improved version