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

scripts/bootstrap-client.sh

@@ -16,19 +16,19 @@ fi
 ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 cd "$ROOT"
 
-if [[ "$SLUG" == "client_site" ]]; then
-  echo "slug is already client_site — branding defaults only."
+if [[ "$SLUG" == "print_forge" ]]; then
+  echo "slug is already print_forge — branding defaults only."
 else
-  echo "Renaming package client_site → $SLUG"
-  if [[ -d site/client_site ]]; then
-    mv site/client_site "site/$SLUG"
+  echo "Renaming package print_forge → $SLUG"
+  if [[ -d site/print_forge ]]; then
+    mv site/print_forge "site/$SLUG"
   fi
-  grep -rl 'client_site' \
+  grep -rl 'print_forge' \
     --exclude-dir=.git --exclude-dir=.venv --exclude-dir=__pycache__ \
     --exclude='*.png' --exclude='*.jpg' --exclude='*.woff*' --exclude='*.eot' \
     --exclude='uv.lock' . \
     | while read -r f; do
-        sed -i "s/client_site/${SLUG}/g" "$f"
+        sed -i "s/print_forge/${SLUG}/g" "$f"
       done
 fi