diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_tools_mcp.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_tools_mcp.rs
index 0ccb5e11f..8b0cd12a0 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_tools_mcp.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_tools_mcp.rs
@@ -1889,6 +1889,8 @@ pub(crate) fn stop_game_creator_external_mcp() -> Result<(), String> {
 
 #[cfg(test)]
 mod tests {
+    use super::*;
+
     #[test]
     fn remove_background_arguments_enforce_mode_color_contract() {
         for fields in [
@@ -1933,7 +1935,6 @@ mod tests {
             );
         }
     }
-    use super::*;
 
     #[cfg(all(windows, feature = "cocos-editor-execute"))]
     #[test]
diff --git a/docs/technical/【技术方案】AGC抠图模式与背景色透传-2026-09-16.md b/docs/technical/【技术方案】AGC抠图模式与背景色透传-2026-09-16.md
index c53346eb2..a7e9525fd 100644
--- a/docs/technical/【技术方案】AGC抠图模式与背景色透传-2026-09-16.md
+++ b/docs/technical/【技术方案】AGC抠图模式与背景色透传-2026-09-16.md
@@ -44,6 +44,8 @@ POST /api/external/v1/editor/images/background-removals
 
 格式或组合错误在入队前返回 400；BgFilter 自动检测失败发生在异步执行阶段，任务通过既有失败状态收口，不把已接受的 202 改成同步 400，不启动其他抠图方式兜底。
 
+OpenAPI 与客户端工具的对外说明只描述模式用途、参数约束和调用方可见的结果；provider 选择与兜底策略保留在内部技术方案中，不写入对外 description。
+
 主站前端继续不传新增字段，因此用户行为不变。
 
 ## AGC 客户端改动
diff --git a/server-rs/crates/api-server/src/editor_project.rs b/server-rs/crates/api-server/src/editor_project.rs
index abe94fc02..5f92b841a 100644
--- a/server-rs/crates/api-server/src/editor_project.rs
+++ b/server-rs/crates/api-server/src/editor_project.rs
@@ -13713,6 +13713,22 @@ pub(crate) fn current_utc_micros() -> i64 {
 
 #[cfg(test)]
 mod tests {
+    use super::*;
+    use crate::{
+        config::AppConfig,
+        editor_generation_queue::{
+            EDITOR_BACKGROUND_MUSIC_GENERATION_JOB_KIND, EDITOR_SOUND_EFFECT_GENERATION_JOB_KIND,
+            EDITOR_VIDEO_GENERATION_JOB_KIND,
+        },
+        editor_green_screen::parse_editor_screen_background_color,
+    };
+    use std::{
+        io::{Read as _, Write as _},
+        net::{TcpListener, TcpStream},
+        sync::mpsc,
+        thread,
+    };
+
     #[test]
     fn background_removal_options_preserve_queue_parameters_and_legacy_identity() {
         for (fields, mode, color) in [
@@ -13817,21 +13833,6 @@ mod tests {
             assert_eq!(output.image.bytes, response_png);
         }
     }
-    use super::*;
-    use crate::{
-        config::AppConfig,
-        editor_generation_queue::{
-            EDITOR_BACKGROUND_MUSIC_GENERATION_JOB_KIND, EDITOR_SOUND_EFFECT_GENERATION_JOB_KIND,
-            EDITOR_VIDEO_GENERATION_JOB_KIND,
-        },
-        editor_green_screen::parse_editor_screen_background_color,
-    };
-    use std::{
-        io::{Read as _, Write as _},
-        net::{TcpListener, TcpStream},
-        sync::mpsc,
-        thread,
-    };
 
     #[test]
     fn ordinary_image_prompt_validation_stays_outside_prompt_builder_execution() {