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/redis.yaml

@@ -0,0 +1,63 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: redis
+  namespace: gooseek
+  labels:
+    app: redis
+    app.kubernetes.io/name: redis
+    app.kubernetes.io/part-of: gooseek
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: redis
+  template:
+    metadata:
+      labels:
+        app: redis
+    spec:
+      containers:
+      - name: redis
+        image: redis:7-alpine
+        command: ["redis-server", "--appendonly", "yes", "--maxmemory", "256mb", "--maxmemory-policy", "allkeys-lru"]
+        ports:
+        - containerPort: 6379
+          name: redis
+        volumeMounts:
+        - name: redis-data
+          mountPath: /data
+        resources:
+          requests:
+            cpu: 100m
+            memory: 128Mi
+          limits:
+            cpu: 500m
+            memory: 512Mi
+        livenessProbe:
+          exec:
+            command: ["redis-cli", "ping"]
+          initialDelaySeconds: 5
+          periodSeconds: 10
+        readinessProbe:
+          exec:
+            command: ["redis-cli", "ping"]
+          initialDelaySeconds: 3
+          periodSeconds: 5
+      volumes:
+      - name: redis-data
+        emptyDir: {}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: redis
+  namespace: gooseek
+spec:
+  type: ClusterIP
+  selector:
+    app: redis
+  ports:
+  - port: 6379
+    targetPort: 6379
+    name: redis