v1.2.0 — Project lifecycle (Draft/Validated/Closed)

Adds the native project lifecycle as a second axis. Draft projects show a muted funnel with a 'Draft' badge and do not auto-advance; Closed projects freeze entirely with a 'Closed' badge; Validated behaves as before. Validating or reopening a project re-evaluates the funnel so it catches up on any evidence accumulated while frozen.