为 ImageProviderSettings 增加脱敏 Debug 实现

手动实现 Debug 并在其中把 api_key 渲染为 <redacted>

settings() 公开返回该结构体，默认 derive 会让 {:?} 直接打印 provider 凭据

server-rs/crates/platform-image/src/image_provider/runtime/types.rs

@@ -15,7 +15,7 @@ impl ImageProvider {
     }
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone)]
 pub struct ImageProviderSettings {
     pub provider: ImageProvider,
     pub base_url: String,
@@ -24,6 +24,20 @@ pub struct ImageProviderSettings {
     pub request_deadline: Option<std::time::Instant>,
 }
 
+impl std::fmt::Debug for ImageProviderSettings {
+    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        // 中文注释：与 ImageProviderClient 的 Debug 保持一致，避免日志泄漏 api_key。
+        formatter
+            .debug_struct("ImageProviderSettings")
+            .field("provider", &self.provider)
+            .field("base_url", &self.base_url)
+            .field("api_key", &"<redacted>")
+            .field("request_timeout_ms", &self.request_timeout_ms)
+            .field("request_deadline", &self.request_deadline)
+            .finish()
+    }
+}
+
 #[derive(Clone)]
 pub struct ImageProviderClient {
     settings: ImageProviderSettings,