Launch fixes (qa): admin relabel, district names, upload hardening
- fix(copy): relabel results dimensions across admin and exports
- feat(district): name-first rendering in admin, code retained as key and export column
- fix(admin): decouple saves from media, truthful preview, actionable upload errors
- Merge pull request #184 from tpromni/fix/launch-admin-relabel-district-upload-qa
Source: tpromni/coach-pulse-admin-ui → qa