Add local product detail page with Dutchie comparison

- Add ProductDetail page for viewing products locally
- Add Dutchie and Details buttons to product cards in Products and StoreDetail pages
- Add Last Updated display showing data freshness
- Add parallel scrape scripts and routes
- Add K8s deployment configurations
- Add frontend Dockerfile with nginx

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

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

k8s/namespace.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: dispensary-scraper
+  labels:
+    app: dispensary-scraper