task-167: aiimage.http-client.* 配置命名空间（connect/read/call 超时与重试默认值同现状、非法值钳制、env 覆盖）+ 8 条测试；surefire 加 MaxMetaspaceSize 修复 fork 内存崩溃

backend-java/src/main/resources/application.yml

@@ -81,6 +81,14 @@ knife4j:
     language: zh_cn
 
 aiimage:
+  # ===== HTTP 客户端统一配置命名空间（task-167）=====
+  # 默认值与现状一致（RustFS 客户端契约表基线）；非法值由 HttpClientProperties 钳制。
+  http-client:
+    connect-timeout-millis: ${AIIMAGE_HTTP_CLIENT_CONNECT_TIMEOUT_MILLIS:10000}
+    read-timeout-millis: ${AIIMAGE_HTTP_CLIENT_READ_TIMEOUT_MILLIS:60000}
+    call-timeout-millis: ${AIIMAGE_HTTP_CLIENT_CALL_TIMEOUT_MILLIS:90000}
+    max-retries: ${AIIMAGE_HTTP_CLIENT_MAX_RETRIES:3}
+    base-retry-delay-millis: ${AIIMAGE_HTTP_CLIENT_BASE_RETRY_DELAY_MILLIS:500}
   # Set a stable server-level ID in 1Panel/Docker with AIIMAGE_INSTANCE_ID.
   # For IDEA/local startup, set -Daiimage.instance-id=<stable-id> or configure the AIIMAGE_INSTANCE_ID env var.
   # Avoid relying on container hostname/container ID, otherwise task owner continuity may break after restart/redeploy.