feat(images): Add local image storage with on-demand resizing

- Store product images locally with hierarchy: /images/products/<state>/<store>/<brand>/<product>/
- Add /img/* proxy endpoint for on-demand resizing via Sharp
- Implement per-product image checking to skip existing downloads
- Fix pathToUrl() to correctly generate /images/... URLs
- Add frontend getImageUrl() helper with preset sizes (thumb, medium, large)
- Update all product pages to use optimized image URLs
- Add stealth session support for Dutchie GraphQL crawls
- Include test scripts for crawl and image verification

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.woodpecker/.ci.yml

@@ -65,10 +65,10 @@ steps:
       platforms: linux/amd64
       provenance: false
       build_args:
-        - APP_BUILD_VERSION=${CI_COMMIT_SHA:0:8}
+        - APP_BUILD_VERSION=${CI_COMMIT_SHA}
         - APP_GIT_SHA=${CI_COMMIT_SHA}
         - APP_BUILD_TIME=${CI_PIPELINE_CREATED}
-        - CONTAINER_IMAGE_TAG=${CI_COMMIT_SHA:0:8}
+        - CONTAINER_IMAGE_TAG=${CI_COMMIT_SHA}
     depends_on: []
     when:
       branch: master