upgrade Java-25 Kotlin-2.3.0 usw.

gradle/libs.versions.toml

@@ -157,6 +157,8 @@ springdoc-openapi-starter-webmvc-ui = { module = "org.springdoc:springdoc-openap
 # --- Spring Cloud ---
 spring-cloud-starter-gateway-server-webflux = { module = "org.springframework.cloud:spring-cloud-starter-gateway-server-webflux" }
 spring-cloud-starter-consul-discovery = { module = "org.springframework.cloud:spring-cloud-starter-consul-discovery" }
+spring-cloud-starter-circuitbreaker-resilience4j = { module = "org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j" }
+
 
 # --- Database & Persistence ---
 exposed-core = { module = "org.jetbrains.exposed:exposed-core", version.ref = "exposed" }
@@ -318,8 +320,34 @@ spring-cloud-gateway = [
     "spring-cloud-starter-consul-discovery"
 ]
 
+# --- Gateway spezifische Bundles ---
+# Kernabhängigkeiten des Gateways, ohne optionale Observability/DB.
+gateway-core = [
+    "spring-cloud-starter-gateway-server-webflux",
+    "spring-cloud-starter-consul-discovery",
+    "spring-boot-starter-actuator",
+    "spring-boot-starter-security",
+    "spring-boot-starter-oauth2-resource-server",
+    "spring-security-oauth2-jose",
+    "spring-cloud-starter-circuitbreaker-resilience4j"
+]
+
+# Ergänzende Bundles, die das Gateway häufig nutzt (getrennt für klare Steuerung)
+gateway-observability = [
+    "kotlin-logging-jvm",
+    "logback-classic",
+    "logback-core",
+    "jackson-module-kotlin",
+    "jackson-datatype-jsr310"
+]
+
 # --- NEW BUNDLES ---
 
+# Redis für Gateway (Rate Limiting, einfache Konfiguration)
+gateway-redis = [
+    "spring-boot-starter-data-redis"
+]
+
 # Ktor Server bundles
 ktor-server-common = [
     "ktor-server-core",
@@ -516,8 +544,4 @@ spring-dependencyManagement = { id = "io.spring.dependency-management", version.
 foojayResolver = { id = "org.gradle.toolchains.foojay-resolver-convention", version.ref = "foojayResolver" }
 
 # Dokka plugin
-# Version pinned to work with Kotlin 2.2.x
-# See: https://github.com/Kotlin/dokka
-# Note: dokka 2.0.0+ matches Kotlin 2.0+; verify compatibility if bumping Kotlin
-# Using latest stable known compatible as of 2025-10
 dokka = { id = "org.jetbrains.dokka", version = "2.1.0" }