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>

ralph/ralph.yml

@@ -0,0 +1,123 @@
+# Ralph Configuration
+max_iterations: 100
+max_runtime: 14400
+agent: claude
+verbose: true
+
+# Unified Agent Integration - Auto-Triggered Capabilities
+# These agent platforms are automatically available when using /ralph
+unified_agents:
+  enabled: true
+  platforms:
+    - name: prometheus
+      description: "Knowledge graph code reasoning with AST analysis"
+      capabilities:
+        - bug_fixing
+        - semantic_search
+        - context_retrieval
+        - regression_testing
+        - issue_classification
+      mcp_server: "prometheus-mcp"
+      auto_trigger:
+        - "bug"
+        - "fix"
+        - "error"
+        - "issue"
+        - "regression"
+        - "test"
+
+    - name: everycode
+      description: "Fast terminal-based coding agent with Auto Drive"
+      capabilities:
+        - auto_drive
+        - planning
+        - multi_agent_solve
+        - auto_review
+        - browser_automation
+      mcp_server: "everycode-mcp"
+      auto_trigger:
+        - "plan"
+        - "implement"
+        - "solve"
+        - "review"
+        - "browser"
+        - "automate"
+
+    - name: dexto
+      description: "Agent harness with orchestration and session management"
+      capabilities:
+        - agent_orchestration
+        - session_management
+        - mcp_operations
+        - memory_management
+        - tool_composition
+      mcp_server: "dexto-mcp"
+      auto_trigger:
+        - "orchestrate"
+        - "coordinate"
+        - "workflow"
+        - "multi-step"
+        - "session"
+
+# Agent Selection Strategy
+agent_selection:
+  strategy: intelligent  # Options: intelligent, priority, round_robin
+  priorities:
+    bug_fixing: [prometheus, everycode, dexto]
+    planning: [everycode, prometheus, dexto]
+    solving: [everycode, dexto, prometheus]
+    review: [everycode, prometheus, dexto]
+    context: [prometheus, dexto, everycode]
+    orchestration: [dexto, everycode, prometheus]
+
+# MCP Server Configuration
+mcp_servers:
+  prometheus:
+    command: "python"
+    args: ["-m", "prometheus_mcp", "--repo", "{repo_path}"]
+  everycode:
+    command: "python"
+    args: ["-m", "everycode_mcp", "--repo", "{repo_path}"]
+  dexto:
+    command: "node"
+    args: ["{dexto_path}/dist/cli.js", "--config", "{dexto_config}"]
+
+# Auto-Trigger Patterns
+# When these patterns are detected in /ralph input, automatically use corresponding agents
+auto_triggers:
+  prometheus:
+    patterns:
+      - "\\bfix\\s+\\w*bug\\b"
+      - "\\bdebug\\b"
+      - "\\btest\\b.*\\bfail\\b"
+      - "\\breproduction\\b"
+      - "\\bregression\\b"
+    tools:
+      - prometheus_classify_issue
+      - prometheus_fix_bug
+      - prometheus_run_tests
+
+  everycode:
+    patterns:
+      - "\\bplan\\b.*\\bimplement\\b"
+      - "\\bfeature\\b.*\\badd\\b"
+      - "\\bsolve\\b.*\\bproblem\\b"
+      - "\\breview\\b.*\\bcode\\b"
+      - "\\bauto\\s+drive\\b"
+    tools:
+      - everycode_auto_drive
+      - everycode_plan
+      - everycode_solve
+      - everycode_auto_review
+
+  dexto:
+    patterns:
+      - "\\borchestrate\\b"
+      - "\\bcoordinate\\b.*\\bagents\\b"
+      - "\\bworkflow\\b"
+      - "\\bmulti-?step\\b"
+      - "\\bpipeline\\b"
+    tools:
+      - dexto_orchestrate
+      - dexto_create_agent
+      - dexto_run_agent