fix: comprehensive Kubernetes configuration review and fixes

- Add namespace.yaml to create adopt-a-street namespace
- Add namespace to all resource metadata (Services, Deployments, StatefulSet, ConfigMap, Secrets, Ingress)
- Fix CouchDB NODENAME to proper StatefulSet format (adopt-a-street-couchdb-0.adopt-a-street-couchdb)
- Add missing environment variables (STRIPE, OPENAI, CouchDB connection pool settings)
- Fix duplicate Cloudinary variables between ConfigMap and Secrets
- Remove duplicate registry-secret.yaml file (security risk)
- Remove unused couchdb-configmap.yaml
- Complete rewrite of DEPLOYMENT_GUIDE.md with namespace-aware instructions
- Add comprehensive CHANGES.md documenting all fixes and rationale

Fixes address all HIGH and MEDIUM priority issues identified in configuration review:
- Namespace configuration (HIGH)
- Missing resources (HIGH)
- CouchDB NODENAME format (MEDIUM)
- Missing environment variables (MEDIUM)
- Duplicate files (MEDIUM)
- Documentation updates (MEDIUM)

All health checks verified, service discovery tested, and deployment process documented.

🤖 Generated with AI Assistant

Co-Authored-By: AI Assistant <noreply@ai-assistant.com>

deploy/k8s/secrets.yaml.example

@@ -2,6 +2,7 @@ apiVersion: v1
 kind: Secret
 metadata:
   name: adopt-a-street-secrets
+  namespace: adopt-a-street
 type: Opaque
 stringData:
   # JWT Secret - CHANGE THIS IN PRODUCTION!
@@ -12,16 +13,15 @@ stringData:
   COUCHDB_PASSWORD: "admin"  # Change this in production
   COUCHDB_SECRET: "some-random-secret-string"  # Change this in production
 
-  # Cloudinary Configuration
-  CLOUDINARY_CLOUD_NAME: "your-cloudinary-cloud-name"
+  # Cloudinary Configuration (secrets only - non-sensitive values in configmap.yaml)
   CLOUDINARY_API_KEY: "your-cloudinary-api-key"
   CLOUDINARY_API_SECRET: "your-cloudinary-api-secret"
 
   # Stripe Configuration (optional - currently mocked)
-  # STRIPE_SECRET_KEY: "your-stripe-secret-key"
+  STRIPE_SECRET_KEY: "your-stripe-secret-key"
 
   # OpenAI Configuration (optional - for AI features)
-  # OPENAI_API_KEY: "your-openai-api-key"
+  OPENAI_API_KEY: "your-openai-api-key"
 
 ---
 # IMPORTANT:
@@ -30,3 +30,5 @@ stringData:
 # 3. DO NOT commit secrets.yaml to version control
 # 4. Add secrets.yaml to .gitignore
 # 5. Generate strong passwords for CouchDB using: openssl rand -base64 32
+# 6. Non-sensitive config values (CLOUDINARY_CLOUD_NAME, STRIPE_PUBLISHABLE_KEY, OPENAI_MODEL)
+#    are in configmap.yaml