补齐后台定价保存用例的 GPT Image 2.5 档位

后台保存 payload 用 gpt-image-2.5-flare-c 与 gpt-image-2.5-sunburst-c 替换历史单 key，保存重新返回 200

公开定价断言改为读取业务模型名 gpt-image-2.5 的生成档价格，并新增 admin 定价读回具体 key 的断言

server-rs/crates/api-server/src/app.rs

@@ -5780,10 +5780,14 @@ mod tests {
                                     "unit": "perGeneration",
                                     "prices": { "0.5K": 9, "1K": 18, "2K": 36 }
                                 },
-                                "gpt-image-2": {
+                                "gpt-image-2.5-flare-c": {
                                     "unit": "perGeneration",
                                     "prices": { "1K": 31, "2K": 62 }
                                 },
+                                "gpt-image-2.5-sunburst-c": {
+                                    "unit": "perGeneration",
+                                    "prices": { "1K": 41, "2K": 82 }
+                                },
                                 "seedance2.0-fast": {
                                     "unit": "perSecond",
                                     "prices": { "480p": 11, "720p": 22, "1080p": 44 }
@@ -5823,6 +5827,7 @@ mod tests {
         assert_eq!(response.status(), StatusCode::OK);
 
         let public_response = app
+            .clone()
             .oneshot(
                 Request::builder()
                     .uri("/api/editor/generation-pricing")
@@ -5840,10 +5845,24 @@ mod tests {
         let payload: Value =
             serde_json::from_slice(&body).expect("public pricing payload should be json");
 
+        // 公开投影按业务模型名暴露生成档价格；具体 provider key 不下发普通前端。
         assert_eq!(
-            payload["models"]["gpt-image-2"]["prices"]["2K"],
+            payload["models"]["gpt-image-2.5"]["prices"]["2K"],
             Value::Number(62.into())
         );
+        let public_models = payload["models"]
+            .as_object()
+            .expect("公开定价必须暴露 models 对象");
+        for hidden_model in [
+            "gpt-image-2",
+            "gpt-image-2.5-flare-c",
+            "gpt-image-2.5-sunburst-c",
+        ] {
+            assert!(
+                !public_models.contains_key(hidden_model),
+                "公开定价不应暴露 {hidden_model}"
+            );
+        }
         assert_eq!(
             payload["models"]["audio1.0"]["unit"],
             Value::String("perGeneration".to_string())
@@ -5856,6 +5875,35 @@ mod tests {
             payload["models"]["seedance2.0"]["prices"]["720p"],
             Value::Number(26.into())
         );
+
+        // admin 定价接口是 concrete provider key 的明确例外，读回的是保存时的原始 key。
+        let admin_response = app
+            .oneshot(
+                Request::builder()
+                    .uri("/admin/api/editor-generation-pricing")
+                    .header("authorization", format!("Bearer {admin_token}"))
+                    .body(Body::empty())
+                    .expect("admin pricing request should build"),
+            )
+            .await
+            .expect("admin pricing request should succeed");
+        assert_eq!(admin_response.status(), StatusCode::OK);
+        let admin_body = admin_response
+            .into_body()
+            .collect()
+            .await
+            .expect("admin pricing body should collect")
+            .to_bytes();
+        let admin_payload: Value =
+            serde_json::from_slice(&admin_body).expect("admin pricing payload should be json");
+        assert_eq!(
+            admin_payload["models"]["gpt-image-2.5-flare-c"]["prices"]["2K"],
+            Value::Number(62.into())
+        );
+        assert_eq!(
+            admin_payload["models"]["gpt-image-2.5-sunburst-c"]["prices"]["2K"],
+            Value::Number(82.into())
+        );
     }
 
     /// 中文注释：验证入口公告拒绝可执行脚本，避免后台配置变成不受控注入。