feat: Go backend, enhanced search, new widgets, Docker deploy

Major changes:
- Add Go backend (backend/) with microservices architecture
- Enhanced master-agents-svc: reranker, content-classifier, stealth-crawler,
  proxy-manager, media-search, fastClassifier, language detection
- New web-svc widgets: KnowledgeCard, ProductCard, ProfileCard, VideoCard,
  UnifiedCard, CardGallery, InlineImageGallery, SourcesPanel, RelatedQuestions
- Improved discover-svc with discover-db integration
- Docker deployment improvements (Caddyfile, vendor.sh, BUILD.md)
- Library-svc: project_id schema migration
- Remove deprecated finance-svc and travel-svc
- Localization improvements across services

Made-with: Cursor

backend/deploy/k8s/ingress.yaml

@@ -0,0 +1,51 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: gooseek-ingress
+  namespace: gooseek
+  annotations:
+    nginx.ingress.kubernetes.io/proxy-body-size: "50m"
+    nginx.ingress.kubernetes.io/proxy-read-timeout: "300"
+    nginx.ingress.kubernetes.io/proxy-send-timeout: "300"
+    nginx.ingress.kubernetes.io/proxy-buffering: "off"
+    nginx.ingress.kubernetes.io/ssl-redirect: "true"
+    cert-manager.io/cluster-issuer: "letsencrypt-prod"
+spec:
+  ingressClassName: nginx
+  tls:
+  - hosts:
+    - api.gooseek.ru
+    secretName: gooseek-tls
+  rules:
+  - host: api.gooseek.ru
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: api-gateway
+            port:
+              number: 3015
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: gooseek-ingress-local
+  namespace: gooseek
+  annotations:
+    nginx.ingress.kubernetes.io/proxy-body-size: "50m"
+    nginx.ingress.kubernetes.io/proxy-read-timeout: "300"
+spec:
+  ingressClassName: nginx
+  rules:
+  - host: localhost
+    http:
+      paths:
+      - path: /api
+        pathType: Prefix
+        backend:
+          service:
+            name: api-gateway
+            port:
+              number: 3015