Stability checkpoint — auto-merge dev→main + workflow rules dev fix

- feat(ci): include auto-merge-dev-to-main template (iris-common)
- fix(ci): workflow rules match dev branch (was main-only)
- chore(submodule): iris-common SHA bump

- ✅ Auto-merge dev → main pushed successfully

- 🔄 CI/CD : auto-merge dev → main eliminates manual promote MRs
- 🎨 Frontend : product pages routes/tests carried over (Angular 21 zoneless)

- Mobile-responsive checks at 375/390/1280 px still manual

- GH Actions parity for double-CI