use git amend instead of rebase

.github/workflows/migrate-images.yml

@@ -67,19 +67,19 @@ jobs:
             --no-dry-run \
             --base-ref HEAD~1
 
-      - name: Commit updated YAMLs and remove temporary assets (push to main)
+      - name: Amend commit – update YAMLs and remove tmp assets (push to main)
         if: github.event_name == 'push'
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
           git rm -rf --ignore-unmatch data/tmp/
           git add -u data/materials/
           if git diff --staged --quiet; then
-            echo "No changes to commit"
+            echo "No changes to amend"
           else
-            git commit -m "chore: migrate images to GCS and remove temporary assets [skip ci]"
+            git commit --amend --no-edit
             n=0
-            until git pull --rebase && git push; do
+            until git push --force-with-lease; do
               n=$((n+1))
               if [ $n -ge 3 ]; then
                 echo "Push failed after 3 attempts"

data/materials/generic/pla-army-green.yaml

@@ -11,7 +11,7 @@ primary_color:
   color_rgba: '#1f6b20ff'
 secondary_colors: []
 photos:
-- url: https://files.openprinttag.org/generic/pla-army-green/20260205110532.jpg
+- url: /tmp/assets/generic/pla-army-green/20260205110600.jpg
   type: unspecified
 properties: {}
 uuid: c6753d1b-4618-505a-aa5a-0676e55e9545