feat: add Claude Code agent commands pipeline
- 14 slash-commands in .claude/commands/ for /project:* invocation
- Model routing: Haiku (mine, evaluate), Sonnet (orchestrate, refine,
tests, skeptic, perf, fix, release), Opus (analyze, implement,
security, optimize-prompts), Sonnet (pipeline orchestrator)
- .claude/rules/global.md — shared coding standards
- .claude/logs/efficiency_score.json — agent scoring store
- README updated with Claude Code usage section and command table
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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