style(游戏共创): 按 rustfmt 格式化 AGC tauri 侧取件与发布改动（纯格式，无语义变化）

CI run 3386 的 `Repository checks` 失败于 `cargo fmt --all -- --check`（AGC tauri
workspace），本分支引入；本次只跑 `cargo fmt --all --manifest-path
apps/ai-game-creator-shell/src-tauri/Cargo.toml`，漂移文件与 CI 报告完全一致，共 3 个：

- game_distribution_publish.rs：404 分支的 `StatusCode::NOT_FOUND =>` 改成块、`game_id`
  字符集判据的 `.chars().all(...)` 换行、`if let Some(...) = crate::project::read_project_fork_source(...)`
  换行、下载路径测试里的 `fork_source_download_segments(...)` 调用换行。
- game_fork.rs：测试里两处 `writer.start_file(...).expect(...)` 与一处 `assert!(...)`
  折行、`filter(|entry| ...)` 闭包折行。
- game_fork/desktop.rs：`use crate::game_distribution_publish::{...}` 收成单行。

逐文件核对过 `git diff`：只有折行 / 缩进 / 大括号位置 / 尾随逗号类变化，标识符、字符串
字面量、注释文本、逻辑一律未动。未改 server-rs、src、scripts，也未动 PR 状态。

apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs

@@ -528,7 +528,9 @@ fn map_fork_source_http_error(status: StatusCode, body: &str) -> String {
         StatusCode::FORBIDDEN => {
             "permission-denied: 作者没有开放这个作品的共创授权，无法改编".to_string()
         }
-        StatusCode::NOT_FOUND => "fork-source-not-found: 该作品不存在或已被删除，无法改编".to_string(),
+        StatusCode::NOT_FOUND => {
+            "fork-source-not-found: 该作品不存在或已被删除，无法改编".to_string()
+        }
         StatusCode::CONFLICT => {
             "fork-source-not-available: 该作品当前不能作为改编来源（未公开、已下架或没有公开版本）"
                 .to_string()
@@ -679,9 +681,9 @@ pub(crate) async fn fetch_platform_game_fork_source(
     let game_id = game_id.trim();
     // 路径安全判据与发行入口一致：只接受 ASCII 字母数字与 `-`/`_`，不接受分隔符与盘符。
     if game_id.is_empty()
-        || !game_id
-            .chars()
-            .all(|character| character.is_ascii_alphanumeric() || character == '-' || character == '_')
+        || !game_id.chars().all(|character| {
+            character.is_ascii_alphanumeric() || character == '-' || character == '_'
+        })
     {
         return Err("改编来源作品标识无效".to_string());
     }
@@ -1497,7 +1499,8 @@ pub(crate) async fn publish_local_project_game(
     // （带 gameId）重复带声明会变成不可恢复的 409。判据就是目标 gameId 是否属于更新发布。
     let mut metadata = metadata;
     if target_game_id.is_none() {
-        if let Some(source) = crate::project::read_project_fork_source(Path::new(project_path.trim()))
+        if let Some(source) =
+            crate::project::read_project_fork_source(Path::new(project_path.trim()))
         {
             metadata.fork = Some(GameDistributionForkDeclaration {
                 parent_game_id: source.game_id,
@@ -1921,8 +1924,10 @@ mod tests {
     #[test]
     fn fork_source_download_path_accepts_only_same_origin_relative_paths() {
         assert_eq!(
-            fork_source_download_segments("/api/game-distribution/games/game_1/fork-source/package")
-                .expect("relative path"),
+            fork_source_download_segments(
+                "/api/game-distribution/games/game_1/fork-source/package"
+            )
+            .expect("relative path"),
             vec![
                 "api",
                 "game-distribution",

apps/ai-game-creator-shell/src-tauri/src/game_fork.rs

@@ -183,9 +183,13 @@ mod tests {
     fn release_package_bytes() -> Vec<u8> {
         let mut writer = zip::ZipWriter::new(std::io::Cursor::new(Vec::new()));
         let options = SimpleFileOptions::default();
-        writer.start_file("index.html", options).expect("start entry");
+        writer
+            .start_file("index.html", options)
+            .expect("start entry");
         std::io::Write::write_all(&mut writer, b"<html></html>").expect("write entry");
-        writer.start_file("game/main.js", options).expect("start script");
+        writer
+            .start_file("game/main.js", options)
+            .expect("start script");
         std::io::Write::write_all(&mut writer, b"console.log('playable')").expect("write script");
         writer.finish().expect("finish zip").into_inner()
     }
@@ -196,7 +200,9 @@ mod tests {
         let digest = sha256_hex(&bytes);
         assert!(verify_fork_source_bytes(&bytes, &digest, bytes.len() as u64).is_ok());
         // 摘要大小写不敏感（服务端回小写，客户端仍按同一口径比较）。
-        assert!(verify_fork_source_bytes(&bytes, &digest.to_uppercase(), bytes.len() as u64).is_ok());
+        assert!(
+            verify_fork_source_bytes(&bytes, &digest.to_uppercase(), bytes.len() as u64).is_ok()
+        );
 
         let size_error = verify_fork_source_bytes(&bytes, &digest, bytes.len() as u64 + 1)
             .expect_err("大小不符必须失败");
@@ -280,7 +286,12 @@ mod tests {
         let leftovers = fs::read_dir(&projects_root)
             .expect("read projects root")
             .filter_map(Result::ok)
-            .filter(|entry| entry.file_name().to_string_lossy().starts_with("gameagent-"))
+            .filter(|entry| {
+                entry
+                    .file_name()
+                    .to_string_lossy()
+                    .starts_with("gameagent-")
+            })
             .count();
         assert_eq!(leftovers, 0, "失败的项目目录必须被清理");
     }

apps/ai-game-creator-shell/src-tauri/src/game_fork/desktop.rs

@@ -1,8 +1,6 @@
 // 桌面 Fork 取件接入；摘要校验、参考副本落点与来源记录规则保留在父模块供现有测试验证。
 use super::*;
-use crate::game_distribution_publish::{
-    fetch_platform_game_fork_source, require_platform_session,
-};
+use crate::game_distribution_publish::{fetch_platform_game_fork_source, require_platform_session};
 
 /// 从平台作品开始创作：取平台已授权公开作品的发行成品包，建成「合规脚手架 + 参考副本」项目。
 ///