feat: Sentry-kompatibles Error-Tracking (Bugsink) für Frontend und Backend

Frontend: @sentry/node mit instrument.ts, globale Error-Handler, 5xx-Interceptor.
Backend: sentry-spring-boot-starter-jakarta, Sentry.captureException im GlobalExceptionHandler.
Konfiguration über SENTRY_DSN Env-Variable, Bugsink via make bugsink startbar.

backend/pom.xml

@@ -88,6 +88,13 @@
             <artifactId>liquibase-core</artifactId>
         </dependency>
 
+        <!-- Sentry / Bugsink Error Tracking -->
+        <dependency>
+            <groupId>io.sentry</groupId>
+            <artifactId>sentry-spring-boot-starter-jakarta</artifactId>
+            <version>8.28.0</version>
+        </dependency>
+
         <!-- OpenAPI/Swagger Documentation -->
         <dependency>
             <groupId>org.springdoc</groupId>

backend/src/main/java/de/effigenix/infrastructure/usermanagement/web/exception/GlobalExceptionHandler.java

@@ -26,6 +26,7 @@ import de.effigenix.infrastructure.usermanagement.web.controller.RoleController;
 import de.effigenix.infrastructure.usermanagement.web.controller.UserController;
 import de.effigenix.infrastructure.usermanagement.web.dto.ErrorResponse;
 
+import io.sentry.Sentry;
 import jakarta.servlet.http.HttpServletRequest;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -280,6 +281,7 @@ public class GlobalExceptionHandler {
     ) {
         RepositoryError error = ex.getError();
         logger.error("Role repository error: {}", error.message());
+        Sentry.captureException(ex);
 
         ErrorResponse errorResponse = ErrorResponse.from(
                 "REPOSITORY_ERROR",
@@ -440,6 +442,7 @@ public class GlobalExceptionHandler {
             HttpServletRequest request
     ) {
         logger.error("Unexpected runtime error: {}", ex.getMessage(), ex);
+        Sentry.captureException(ex);
 
         ErrorResponse errorResponse = ErrorResponse.from(
                 "INTERNAL_ERROR",
@@ -459,6 +462,7 @@ public class GlobalExceptionHandler {
             HttpServletRequest request
     ) {
         logger.error("Unexpected checked exception: {}", ex.getMessage(), ex);
+        Sentry.captureException(ex);
 
         ErrorResponse errorResponse = ErrorResponse.from(
                 "INTERNAL_ERROR",

backend/src/main/resources/application.yml

@@ -32,6 +32,12 @@ jwt:
   expiration: 28800000  # 8 hours in milliseconds
   refresh-expiration: 604800000  # 7 days in milliseconds
 
+# Sentry / Bugsink Error Tracking
+sentry:
+  dsn: ${SENTRY_DSN:}
+  environment: ${SENTRY_ENVIRONMENT:development}
+  traces-sample-rate: 0
+
 # Server Configuration
 server:
   port: 8080