Ship Print Forge shop site (colors, photos, 3D viewer) (#2)

## Summary

- Rebrand the Django client template as Print Forge (`client_site` → `print_forge`) with shop + shipping enabled.
- Product listings support multiple photos, color variants (shared price/description/STL, per-color stock and photos), and a photo-first / 3D-second gallery.
- Public pages use 3D printer / printed-toy photography instead of leftover t-shirt mockups; beta CI deploys on `master`.

Closes #1
Infra: [server-infra#27](ai_ml_operations/server-infra#27) (easy deploy beta).

## Test plan

- [ ] Product page shows photo first, 3D model second; color swatches swap photos and stock
- [ ] Portal can upload multiple photos and per-color qty/images; STL stays shared
- [ ] Public home/about/gallery have no t-shirt mockups
- [ ] `manage.py test` passes
- [ ] After server-infra#27: beta deploy to `print-forge-preview.aimloperations.com`

Reviewed-on: #2

.gitea/workflows/deploy-prod.yml

@@ -43,7 +43,7 @@ jobs:
             COMPOSE_DATABASE_URL DJANGO_ENV DJANGO_SECRET_KEY DJANGO_DEBUG \
             DJANGO_ALLOWED_HOSTS || true
 
-          PROJECT="client-ci-${{ gitea.sha }}"
+          PROJECT="print-forge-ci-${{ gitea.sha }}"
           cleanup() { docker compose -p "$PROJECT" down -v --remove-orphans || true; }
           trap cleanup EXIT
 
@@ -53,7 +53,7 @@ jobs:
             -e DJANGO_SECRET_KEY=test-secret-key \
             -e DJANGO_DEBUG=true \
             -e DJANGO_ALLOWED_HOSTS=localhost,127.0.0.1,testserver \
-            -e DATABASE_URL=postgres://client_site:client_site@db:5432/client_site \
+            -e DATABASE_URL=postgres://print_forge:print_forge@db:5432/print_forge \
             -e SITE_UNDER_CONSTRUCTION=false \
             web uv run python manage.py test
 
@@ -64,9 +64,10 @@ jobs:
       SERVER_INFRA_ROOT: /home/westfarn/Documents/repos/server-infra
       ANSIBLE_PRIVATE_KEY_FILE: /home/westfarn/.ssh/ansible_deploy
     steps:
-      - name: Deploy client_site prod to all webservers
+      # --app must match server-infra app_catalog (print_forge).
+      - name: Deploy print_forge prod to all webservers
         run: |
           "$SERVER_INFRA_ROOT/scripts/deploy.sh" \
-            --app client_site \
+            --app print_forge \
             --env prod \
             --ref "${{ gitea.sha }}"