feat: switch config-server from git to native profiles

- Replace gitlab git backend with native classpath configs
- Add dev/prod profiles per service:
  - dev: docker-compose service names (linkedin-db, connections-db)
  - prod: k8s service names (postgres, neo4j)
- Update K8s configmap to SPRING_PROFILES_ACTIVE=prod
- Split NEO4J_AUTH (container) and NEO4J_PASSWORD (app) in secrets
- Remove hardcoded env overrides from K8s microservice manifests

Author: premtsd-code

config-server/src/main/resources/application.yml

@@ -1,16 +1,13 @@
 spring:
   application:
     name: config-server
-
+  profiles:
+    active: native
   cloud:
     config:
       server:
-        git:
-          uri: https://gitlab.cs.nuim.ie/linkedin-microservice/linkedinconfigs
-          default-label: main
-          username: p250109
-          password: ${GIT_PASSWORD}  # Use env var or Docker secret for safety
-          clone-on-start: true       # Good for reliability on restart
+        native:
+          search-locations: classpath:/configs
 
 server:
   port: 8888
@@ -20,4 +17,4 @@ eureka:
     register-with-eureka: true
     fetch-registry: true
     service-url:
-      defaultZone: http://discovery-server:8761/eureka
+      defaultZone: http://discovery-server:8761/eureka

config-server/src/main/resources/configs/api-gateway.yml

@@ -0,0 +1,5 @@
+server:
+  port: 8080
+
+jwt:
+  secretKey: ${JWT_SECRET:asdfladf98a7df89aysf8d9yasiudfha9s87dfa89syudhfa98sdfyaisuhdfa98sfy}

config-server/src/main/resources/configs/application.yml

@@ -0,0 +1,23 @@
+# Shared config for all services
+management:
+  health:
+    circuitbreakers:
+      enabled: true
+  endpoints:
+    web:
+      exposure:
+        include: "*"
+  endpoint:
+    health:
+      show-details: always
+  tracing:
+    sampling:
+      probability: 1.0
+  zipkin:
+    tracing:
+      endpoint: http://zipkin:9411/api/v2/spans
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://discovery-server:8761/eureka

config-server/src/main/resources/configs/connections-service-dev.yml

@@ -0,0 +1,7 @@
+# Dev profile — Docker Compose
+spring:
+  neo4j:
+    uri: bolt://connections-db:7687
+    authentication:
+      username: neo4j
+      password: password

config-server/src/main/resources/configs/connections-service-prod.yml

@@ -0,0 +1,7 @@
+# Prod profile — K8s / K3s
+spring:
+  neo4j:
+    uri: bolt://neo4j:7687
+    authentication:
+      username: neo4j
+      password: ${NEO4J_PASSWORD:neo4j_prod_password}

config-server/src/main/resources/configs/connections-service.yml

@@ -0,0 +1,22 @@
+# Common connections-service config
+server:
+  servlet:
+    context-path: /connections
+  port: 8080
+
+spring:
+  data:
+    neo4j:
+      repositories:
+        enabled: true
+  kafka:
+    bootstrap-servers: kafka:9092
+    producer:
+      key-serializer: org.apache.kafka.common.serialization.LongSerializer
+      value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
+    consumer:
+      group-id: ${spring.application.name}
+      key-deserializer: org.apache.kafka.common.serialization.LongDeserializer
+      value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer
+      properties:
+        spring.json.trusted.packages: "com.premtsd.linkedin.*"

config-server/src/main/resources/configs/discovery-server.yml

@@ -0,0 +1,7 @@
+server:
+  port: 8761
+
+eureka:
+  client:
+    register-with-eureka: false
+    fetch-registry: false

config-server/src/main/resources/configs/notification-service-dev.yml

@@ -0,0 +1,9 @@
+# Dev profile — Docker Compose
+spring:
+  datasource:
+    url: jdbc:postgresql://linkedin-db:5432/linkedinDB
+    username: user
+    password: password
+  jpa:
+    hibernate:
+      ddl-auto: create-drop

config-server/src/main/resources/configs/notification-service-prod.yml

@@ -0,0 +1,9 @@
+# Prod profile — K8s / K3s
+spring:
+  datasource:
+    url: jdbc:postgresql://postgres:5432/linkedinDB
+    username: linkedin_user
+    password: ${DB_PASSWORD:password}
+  jpa:
+    hibernate:
+      ddl-auto: update

config-server/src/main/resources/configs/notification-service.yml

@@ -0,0 +1,27 @@
+# Common notification-service config
+server:
+  port: 8080
+
+spring:
+  mail:
+    host: smtp.gmail.com
+    port: 587
+    username: i.prem.tsd@gmail.com
+    password: ${MAIL_PASSWORD:qwxzaaiswyqigbdh}
+    properties:
+      mail:
+        smtp:
+          auth: true
+          starttls:
+            enable: true
+            required: true
+          ssl:
+            trust: smtp.gmail.com
+  kafka:
+    bootstrap-servers: kafka:9092
+    consumer:
+      group-id: ${spring.application.name}
+      key-deserializer: org.apache.kafka.common.serialization.LongDeserializer
+      value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer
+      properties:
+        spring.json.trusted.packages: "com.premtsd.linkedin.*"