Enhance agent system: add implementer agent, external source research, improved verification

[Claude]

Addresses feedback to improve the Parameter Golf agent workflow system with better syntax validation, external source integration, and dedicated implementation agent.

Changes

Created Implementer Agent (554 lines)

• New file: .claude/commands/agents/implementer.md
• Incremental implementation pattern: Change → Test → Repeat
• Immediate error handling with fixes before proceeding
• Implementation pattern library (hyperparameters, modules, forward pass)
• Common error solutions (syntax, import, name, attribute, shape mismatches)
• Clean-up procedures and documentation standards

Enhanced Researcher Agent (+113 lines)

• GitHub MCP integration: Fetch and analyze PRs via mcp__github-mcp-server__* tools
• Research paper support: Extract techniques from arXiv links and PDFs
• External documentation: Process blog posts, implementation guides, docs
• Cross-referencing: Prioritize user-provided sources, combine with local implementations

Example usage:

User: "Implement technique from PR #145"
Researcher: Uses mcp__github-mcp-server__pull_request_read to fetch PR details and diff

Fixed Verifier Syntax Validation

• Proper python -m py_compile with exit code checking
• Clear distinction between syntax errors and missing dependency imports
• Explicit pass criteria: syntax errors fail, import errors don't block Level 1

Updated Main Workflow

• Updated from implicit 5-stage to explicit 5-stage workflow with dedicated implementer
• Stage 3 now references implementer.md instead of generic implementation guidance
• Clarified agent responsibilities at each stage

Updated Documentation

• Added implementer to agent list with key features
• Documented external source capabilities (GitHub MCP, papers, docs)
• Enhanced best practices for all agents
• Updated workflow examples

Files Modified

• .claude/commands/agents/verifier.md - Improved syntax checking
• .claude/commands/agents/researcher.md - External source support
• .claude/commands/parameter-golf-agent.md - Workflow updates
• .claude/commands/agents/README.md - Documentation updates

Files Created

• .claude/commands/agents/implementer.md - Dedicated implementation agent

Impact

Total agent system: 2,561 lines across 6 files (5 agents + README)