Migrar Pipeline para include: template partilhado

Objectivo

Reescrever .gitlab-ci.yml para usar include: do template partilhado /opt/contracts/pipeline-template.yml.

Resultado

• Pipeline migrada com sucesso (pipeline #2280 GREEN, #2304 GREEN após auto-healing)
• 100 jobs (99 anteriores + cleanup:images NOVO)
• Template copiado para ci/pipeline-template.yml (contracts não existe no GitLab)
• 4 scripts criados: ci/run-suite.sh, ci/generate-release-manifest.sh, ci/deploy-release-dry-run.sh
• Promote, notify, cleanup, e2e_suite, prepare_e2e, release_manifest usam extends: do template

Fixes adicionais (E2E UAT root causes)

• seed_all.py: seed_tester adicionado como step 6/6 (resolve ~160 falhas UAT)
• Alembic e3f4a5b6c7d8: COMMIT antes ALTER TYPE (resolve POST /admin/team 500)
• CheckoutPage.tsx: static lg:sticky (resolve checkout mobile click intercept)
• seed_all.py: ImportError User → AdminUser (auto-healing tentativa 1)
• Visual baseline pricing actualizada

Commits

• efb045e ci(pipeline): migrar para include: template partilhado
• 4fbdff2 fix(ci): override stages — evidence antes de audit
• 00c037c fix(backend+frontend): seed tester + alembic enum + checkout CSS
• 1e5cb80 fix(seed): corrigir ImportError User → AdminUser
• 4bd6e3d chore(visual): actualizar baseline pricing

INFRA configurado

• Scheduled pipeline ID 4: staging nightly (03:00 UTC)
• Scheduled pipeline ID 5: prod weekly (segunda 04:00 UTC)