M1 — Pre-E2E stabilization

Ship all six wave:1-next fixes before the 2026-08-21 E2E run.

Exit criteria: All six issues merged to dev. gh aw compile exits 0 on every squad* workflow. The #1732 compile gate demonstrably FAILS a deliberately-broken workflow in CI. bradygaster/aspiregregator-squad-e2e has 'Allow GitHub Actions to create and approve pull requests' enabled.

Issues: #1772, #1758, #1759, #1732, #1761, #1756