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+# AI Agents
+
+Start here: [CONTEXT.md](CONTEXT.md)
+
+## Quick Reference
+
+| What | Where |
+|------|-------|
+| Project overview | `CONTEXT.md` |
+| Architecture & patterns | `spec/guidelines/ARCHITECTURE.md` |
+| Non-negotiable rules | `spec/guidelines/INVARIANTS.md` |
+| Quality standards | `spec/guidelines/QUALITY_BAR.md` |
+| Product vision | `spec/guidelines/VISION.md` |
+| Feature specs | `spec/features/` |
+| Active work | `work/` |
+
+## Rules
+
+1. Read `CONTEXT.md` first
+2. Never modify files in `spec/guidelines/`
+3. If a spec is unclear, report it—do not guess