fix(backend): switch to sentry-spring-boot-4:8.41.0 for Spring Boot 4/SF7 compatibility

sentry-spring-boot-starter-jakarta 8.5.0 does not support Spring Boot 4.0 —
it logs an "Incompatible Spring Boot Version" warning and its SentryAutoConfiguration
crashes SF7 bean-name generation. sentry-spring-boot-4 (added in 8.21.0) is the
dedicated Spring Boot 4 module with a fixed auto-configuration class.

- Replace sentry-spring-boot-starter-jakarta:8.5.0 with sentry-spring-boot-4:8.41.0
- Delete SentryConfig.java — workaround no longer needed, auto-config handles init
- Remove spring.autoconfigure.exclude from application.yaml + application-test.yaml
- Delete SentryConfigTest.java — tested the deleted workaround class
- Update ApplicationContextTest: assert Sentry.isEnabled() is false when no DSN set

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/src/test/java/org/raddatz/familienarchiv/ApplicationContextTest.java

@@ -31,8 +31,8 @@ class ApplicationContextTest {
     }
 
     @Test
-    void sentry_auto_configuration_is_excluded_from_context() {
-        // SentryAutoConfiguration crashes on Spring Boot 4/SF7 — must stay excluded (see #580)
-        assertThat(ctx.containsBean("sentryAutoConfiguration")).isFalse();
+    void sentry_is_disabled_when_no_dsn_is_configured() {
+        // application-test.yaml has no sentry.dsn — SDK must stay inactive so tests are clean
+        assertThat(io.sentry.Sentry.isEnabled()).isFalse();
     }
 }

backend/src/test/java/org/raddatz/familienarchiv/config/SentryConfigTest.java

@@ -1,53 +0,0 @@
-package org.raddatz.familienarchiv.config;
-
-import io.sentry.Sentry;
-import org.junit.jupiter.api.Test;
-import org.mockito.MockedStatic;
-import org.springframework.test.util.ReflectionTestUtils;
-
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.Mockito.mockStatic;
-import static org.mockito.Mockito.times;
-
-class SentryConfigTest {
-
-    @Test
-    void init_does_not_call_sentry_when_dsn_is_blank() {
-        SentryConfig config = new SentryConfig();
-        ReflectionTestUtils.setField(config, "dsn", "");
-        ReflectionTestUtils.setField(config, "environment", "test");
-        ReflectionTestUtils.setField(config, "tracesSampleRate", 1.0);
-
-        try (MockedStatic<Sentry> sentryMock = mockStatic(Sentry.class)) {
-            config.init();
-            sentryMock.verifyNoInteractions();
-        }
-    }
-
-    @Test
-    void init_calls_sentry_init_when_dsn_is_set() {
-        SentryConfig config = new SentryConfig();
-        ReflectionTestUtils.setField(config, "dsn", "https://key@glitchtip.example.com/1");
-        ReflectionTestUtils.setField(config, "environment", "test");
-        ReflectionTestUtils.setField(config, "tracesSampleRate", 0.5);
-
-        try (MockedStatic<Sentry> sentryMock = mockStatic(Sentry.class)) {
-            config.init();
-            sentryMock.verify(() -> Sentry.init(any(Sentry.OptionsConfiguration.class)), times(1));
-        }
-    }
-
-    @Test
-    void init_does_not_call_sentry_when_dsn_is_null() {
-        SentryConfig config = new SentryConfig();
-        ReflectionTestUtils.setField(config, "dsn", null);
-        ReflectionTestUtils.setField(config, "environment", "test");
-        ReflectionTestUtils.setField(config, "tracesSampleRate", 1.0);
-
-        try (MockedStatic<Sentry> sentryMock = mockStatic(Sentry.class)) {
-            config.init();
-            sentryMock.verifyNoInteractions();
-        }
-    }
-}

backend/src/test/resources/application-test.yaml

@@ -13,12 +13,6 @@ spring:
     password: test
   mail:
     host: localhost
-  autoconfigure:
-    exclude:
-      # SentryAutoConfiguration fails on Spring Boot 4/Spring Framework 7: Spring cannot generate a
-      # bean name for the triply-nested SentryAutoConfiguration$HubConfiguration$SentrySpanRestClientConfiguration.
-      # Sentry is wired manually via SentryConfig instead. See #580.
-      - io.sentry.spring.boot.jakarta.SentryAutoConfiguration
 
 # Disable OTel SDK entirely in tests — prevents auto-configuration from loading resource providers
 # (e.g. AzureAppServiceResourceProvider) that fail against the semconv version used here.