feat: add Conductor plugin for Context-Driven Development

Add comprehensive Conductor plugin implementing Context-Driven Development
methodology with tracks, specs, and phased implementation plans.

Components:
- 5 commands: setup, new-track, implement, status, revert
- 1 agent: conductor-validator
- 3 skills: context-driven-development, track-management, workflow-patterns
- 18 templates for project artifacts

Documentation updates:
- README.md: Updated counts (68 plugins, 100 agents, 110 skills, 76 tools)
- docs/plugins.md: Added Conductor to Workflows section
- docs/agents.md: Added conductor-validator agent
- docs/agent-skills.md: Added Conductor skills section

Also includes Prettier formatting across all project files.

plugins/api-scaffolding/skills/fastapi-templates/SKILL.md

@@ -20,6 +20,7 @@ Production-ready FastAPI project structures with async patterns, dependency inje
 ### 1. Project Structure
 
 **Recommended Layout:**
+
 ```
 app/
 ├── api/                    # API routes
@@ -52,6 +53,7 @@ app/
 ### 2. Dependency Injection
 
 FastAPI's built-in DI system using `Depends`:
+
 - Database session management
 - Authentication/authorization
 - Shared business logic
@@ -60,6 +62,7 @@ FastAPI's built-in DI system using `Depends`:
 ### 3. Async Patterns
 
 Proper async/await usage:
+
 - Async route handlers
 - Async database operations
 - Async background tasks