Milestones

ID	Wave	Milestone	Exit
M0.1	W0	Workspace live	.ai/ + brain seeded
M1.1	W1	Site builds	npm test && npm run build
M2.1	W2	Inventory complete	Feature matrix filled from code + chats
M3.1	W3	Admin vertical slice	Products + orders TDD green
M4.1	W4	Store vertical slice	Catalog + cart + checkout stub
M5.1	W5	Handout	Release notes + evidence