Architecture Decision Records (ADRs)

Immutable-after-accept records of architectural choices.

• 0001 — Initial architecture
• 0002 — Skill marketplace as source
• 0003 — Publish as public Python library on PyPI
• 0004 — Five-layer agent hierarchy is sufficient for v1.x
• 0005 — EXPRESSION-PROFILE-REGISTRY defers to v1.5

Format follows the MADR template. Add a new ADR via cp ../../reference/templates/ADR.md NNNN-<title>.md and increment the number.