fix(ops): rebuild CDC safe observability on live develop

cdc-service/src/main/resources/application-local.yml

@@ -0,0 +1,17 @@
+spring:
+  config:
+    activate:
+      on-profile: local
+
+management:
+  tracing:
+    sampling:
+      probability: 1.0
+
+logging:
+  level:
+    com:
+      xtrmetl: DEBUG
+    org:
+      springframework:
+        web: DEBUG

cdc-service/src/main/resources/application.yml

@@ -46,9 +46,6 @@ xtrmetl:
     ddl-blocked-prefixes: ${REPLICA_DDL_BLOCKED_PREFIXES:DROP TABLE,DROP SCHEMA,DROP DATABASE,TRUNCATE}
 
 management:
-  tracing:
-    sampling:
-      probability: 1.0
   zipkin:
     tracing:
       endpoint: http://${ZIPKIN_HOST:localhost}:9412/api/v2/spans
@@ -69,10 +66,5 @@ eureka:
 logging:
   level:
     root: INFO
-    com:
-      xtrmetl: DEBUG
     io:
       debezium: INFO
-    org:
-      springframework:
-        web: DEBUG

cdc-service/src/test/java/com/xtrmetl/cdc/config/CdcObservabilityProfileContractTest.java

@@ -0,0 +1,52 @@
+package com.xtrmetl.cdc.config;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.config.YamlPropertiesFactoryBean;
+import org.springframework.core.io.ClassPathResource;
+
+import java.util.Properties;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * Guards the deployable CDC configuration against silently enabling local-debug observability.
+ */
+class CdcObservabilityProfileContractTest {
+
+    @Test
+    void baseConfigurationDoesNotForceDebugLoggingOrFullTraceSampling() {
+        Properties properties = load("application.yml");
+
+        assertNull(properties.getProperty("management.tracing.sampling.probability"),
+                "base CDC configuration must retain Spring Boot's bounded default sampling policy");
+        assertNull(properties.getProperty("logging.level.com.xtrmetl"),
+                "base CDC configuration must not force application DEBUG logging");
+        assertNull(properties.getProperty("logging.level.org.springframework.web"),
+                "base CDC configuration must not force Spring Web DEBUG logging");
+    }
+
+    @Test
+    void localProfileExplicitlyRestoresDeveloperVerboseObservability() {
+        ClassPathResource localProfile = new ClassPathResource("application-local.yml");
+        assertTrue(localProfile.exists(),
+                "local CDC profile must preserve the opt-in developer observability contract");
+
+        Properties properties = load("application-local.yml");
+        assertEquals("local", properties.getProperty("spring.config.activate.on-profile"));
+        assertEquals("1.0", properties.getProperty("management.tracing.sampling.probability"));
+        assertEquals("DEBUG", properties.getProperty("logging.level.com.xtrmetl"));
+        assertEquals("DEBUG", properties.getProperty("logging.level.org.springframework.web"));
+    }
+
+    private static Properties load(String resourceName) {
+        YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
+        yaml.setResources(new ClassPathResource(resourceName));
+        Properties properties = yaml.getObject();
+        if (properties == null) {
+            throw new IllegalStateException("Could not load " + resourceName);
+        }
+        return properties;
+    }
+}