Full parallel implementation of typesense and opensearch

backend/src/main/resources/application.yml

@@ -19,6 +19,12 @@ spring:
       max-file-size: 256MB  # Increased for backup restore
       max-request-size: 260MB  # Slightly higher to account for form data
 
+  jackson:
+    serialization:
+      write-dates-as-timestamps: false
+    deserialization:
+      adjust-dates-to-context-time-zone: false
+
 server:
   port: 8080
 
@@ -34,6 +40,7 @@ storycove:
     password: ${APP_PASSWORD}  # REQUIRED: No default password for security
   search:
     engine: ${SEARCH_ENGINE:typesense}  # typesense or opensearch
+    dual-write: ${SEARCH_DUAL_WRITE:false}  # enable dual-write during migration
   typesense:
     api-key: ${TYPESENSE_API_KEY:xyz}
     host: ${TYPESENSE_HOST:localhost}
@@ -44,9 +51,9 @@ storycove:
     # Connection settings
     host: ${OPENSEARCH_HOST:localhost}
     port: ${OPENSEARCH_PORT:9200}
-    scheme: ${OPENSEARCH_SCHEME:https}
-    username: ${OPENSEARCH_USERNAME:admin}
-    password: ${OPENSEARCH_PASSWORD}  # REQUIRED when using OpenSearch
+    scheme: ${OPENSEARCH_SCHEME:http}
+    username: ${OPENSEARCH_USERNAME:}
+    password: ${OPENSEARCH_PASSWORD:}  # Empty when security is disabled
 
     # Environment-specific configuration
     profile: ${SPRING_PROFILES_ACTIVE:development}  # development, staging, production