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/backend-development/skills/architecture-patterns/SKILL.md

@@ -22,12 +22,14 @@ Master proven backend architecture patterns including Clean Architecture, Hexago
 ### 1. Clean Architecture (Uncle Bob)
 
 **Layers (dependency flows inward):**
+
 - **Entities**: Core business models
 - **Use Cases**: Application business rules
 - **Interface Adapters**: Controllers, presenters, gateways
 - **Frameworks & Drivers**: UI, database, external services
 
 **Key Principles:**
+
 - Dependencies point inward
 - Inner layers know nothing about outer layers
 - Business logic independent of frameworks
@@ -36,11 +38,13 @@ Master proven backend architecture patterns including Clean Architecture, Hexago
 ### 2. Hexagonal Architecture (Ports and Adapters)
 
 **Components:**
+
 - **Domain Core**: Business logic
 - **Ports**: Interfaces defining interactions
 - **Adapters**: Implementations of ports (database, REST, message queue)
 
 **Benefits:**
+
 - Swap implementations easily (mock for testing)
 - Technology-agnostic core
 - Clear separation of concerns
@@ -48,11 +52,13 @@ Master proven backend architecture patterns including Clean Architecture, Hexago
 ### 3. Domain-Driven Design (DDD)
 
 **Strategic Patterns:**
+
 - **Bounded Contexts**: Separate models for different domains
 - **Context Mapping**: How contexts relate
 - **Ubiquitous Language**: Shared terminology
 
 **Tactical Patterns:**
+
 - **Entities**: Objects with identity
 - **Value Objects**: Immutable objects defined by attributes
 - **Aggregates**: Consistency boundaries
@@ -62,6 +68,7 @@ Master proven backend architecture patterns including Clean Architecture, Hexago
 ## Clean Architecture Pattern
 
 ### Directory Structure
+
 ```
 app/
 ├── domain/           # Entities & business rules