Squash-merge of phase/08-final-review-approval-ship into milestone/v0.1-prototype. Review PASS-WITH-FIXES (double-compose + drawer-keyboard P1s, 90/90). Audit PASS-WITH-NOTES (all applied). Tag v0.1.8 = extended-prototype release candidate. Milestone merge to main HALTS at the REQ-62 owner approval gate.
Final phase: full-milestone review PASS-WITH-FIXES (5 P0s fixed with tests), audit PASS, PLAN/CHECKPOINT advance. REQ-62 owner approval gate: milestone merge to main + v0.1.4 publication halt for recorded owner approval. Gates 42/42 green.