feat: Add unified agent integration with Prometheus, Every Code, and Dexto
This commit adds comprehensive integration of three major AI agent platforms:
## MCP Servers (3)
- Prometheus MCP: Knowledge graph code reasoning with AST analysis
- Every Code MCP: Fast terminal-based coding agent with Auto Drive
- Dexto MCP: Agent harness with orchestration and session management
## Claude Code Skills (6)
- /agent-plan: Generate implementation plans
- /agent-fix-bug: Fix bugs end-to-end
- /agent-solve: Solve complex problems
- /agent-review: Review code quality
- /agent-context: Get code context
- /agent-orchestrate: Orchestrate workflows
## Ralph Auto-Integration
- Pattern-based auto-trigger for all three platforms
- Intelligent backend selection
- Multi-platform coordination
- Configuration in ralph/ralph.yml
## Documentation
- Complete integration guides
- Ralph auto-integration documentation
- Setup scripts
- Usage examples
Co-Authored-By: Claude <noreply@anthropic.com>
