From 3aa3e33ceb3ae75e9bb48477e95a442864b13a6e Mon Sep 17 00:00:00 2001
From: Suzumiya <suzmii@qq.com>
Date: Sat, 3 Oct 2026 16:41:04 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=9E=E7=8E=B0=E7=BB=9F=E4=B8=80=E9=A1=B9?=
 =?UTF-8?q?=E7=9B=AE=E5=8F=91=E8=A1=8C=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
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以 projectVersion 作为 AGC 唯一用户版本，支持同版本重复提交和版本回退。

保留 publicationRevision 并发校验与旧客户端自动递增兼容。
---
 .../src/pages/AdminGrayReleaseConfigPage.tsx  |   2 +-
 .../scripts/check-config.mjs                  |   1 +
 .../src-tauri/src/desktop.rs                  |   1 +
 .../src/game_distribution_publish.rs          | 123 ++++++++++++++----
 .../src-tauri/src/game_publish_attempt.rs     |  54 +++++---
 .../src-tauri/src/project/export.rs           |   7 +-
 .../src-tauri/src/project/manifest.rs         |  15 +++
 apps/ai-game-creator-shell/src/App.tsx        |   2 +
 .../GameDistributionPublishPanel.tsx          | 108 +++++++++++----
 .../src/services/gameDistributionPublish.ts   |  82 ++++++++----
 apps/ai-game-creator-shell/src/styles.css     |  17 +++
 .../tests/gameDistributionPublish.test.ts     |  90 +++++++++++--
 .../tests/gameDistributionPublishLive.test.ts |  53 +++++++-
 .../gameDistributionPublishPanel.test.tsx     |  97 ++++++++++++--
 .../shared/src/contracts/gameCreationApp.ts   |  47 +++++++
 .../shared/src/contracts/gameDistribution.ts  |   7 +-
 .../src/modules/game_distribution.rs          |  18 +--
 .../src/application.rs                        |  79 +++++++++--
 .../module-game-distribution/src/commands.rs  |   4 +
 .../module-game-distribution/src/domain.rs    |  20 +++
 .../module-game-distribution/src/errors.rs    |   4 +
 .../module-game-distribution/src/lib.rs       |   2 +-
 .../shared-contracts/src/game_creation_app.rs | 102 +++++++++++++++
 .../shared-contracts/src/game_distribution.rs |  15 ++-
 .../spacetime-client/src/game_distribution.rs |   3 +-
 .../spacetime-module/src/game_distribution.rs |  80 +++++-------
 26 files changed, 819 insertions(+), 214 deletions(-)

diff --git a/apps/admin-web/src/pages/AdminGrayReleaseConfigPage.tsx b/apps/admin-web/src/pages/AdminGrayReleaseConfigPage.tsx
index 5a7e62262..7b0b78ab3 100644
--- a/apps/admin-web/src/pages/AdminGrayReleaseConfigPage.tsx
+++ b/apps/admin-web/src/pages/AdminGrayReleaseConfigPage.tsx
@@ -64,7 +64,7 @@ const FIXED_GATE_TARGETS: GateTargetOption[] = [
     key: 'game-distribution:publish',
     label: '游戏发布',
     description:
-      '未配置或关闭时不开放，启用后按白名单 / 用户标签 / 灰度比例放行',
+      '游戏发布入口灰度：未配置或关闭时不开放，启用后按白名单 / 用户标签 / 灰度比例放行',
   },
 ];
 
diff --git a/apps/ai-game-creator-shell/scripts/check-config.mjs b/apps/ai-game-creator-shell/scripts/check-config.mjs
index b47e8cbe3..dad6a5271 100644
--- a/apps/ai-game-creator-shell/scripts/check-config.mjs
+++ b/apps/ai-game-creator-shell/scripts/check-config.mjs
@@ -135,6 +135,7 @@ const allowedUncalledTauriCommands = [
   'read_game_cover_generation_price',
   'suggest_game_distribution_publish_metadata',
   'read_game_distribution_publication',
+  'update_game_distribution_project_version',
   'upload_local_project_game_package',
   // 账户与钱包由 Rust typed command 持有 origin/Bearer/envelope；命令名在 `accountHost.ts`
   // 里以字面量出现，静态扫描仍按共享注册表核验。
diff --git a/apps/ai-game-creator-shell/src-tauri/src/desktop.rs b/apps/ai-game-creator-shell/src-tauri/src/desktop.rs
index 1eec25092..7c4ff8fb8 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/desktop.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/desktop.rs
@@ -611,6 +611,7 @@ pub(super) fn run() {
             read_game_cover_generation_price,
             generate_game_distribution_cover,
             read_game_distribution_publication,
+            update_game_distribution_project_version,
             publish_local_project_game,
             read_game_creator_app_config,
             clear_game_creator_acl_elevation_denials,
diff --git a/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs b/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs
index 9741c9cf5..6ff955013 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs
@@ -22,7 +22,8 @@ use serde_json::{json, Value};
 use sha2::{Digest, Sha256};
 use shared_contracts::api::API_RESPONSE_ENVELOPE_HEADER;
 use shared_contracts::game_creation_app::{
-    GameCreationAppManifest, GameCreationAppPublicationBinding,
+    resolve_game_creation_app_project_version, GameCreationAppManifest,
+    GameCreationAppPublicationBinding,
 };
 use shared_contracts::game_distribution::{
     GameDistributionCreateGameRequest, GameDistributionCreateVersionRequest,
@@ -342,8 +343,8 @@ fn map_http_error(status: StatusCode, body: &str, fallback: &str) -> String {
             server_error_detail(code, message, || "当前账号无权执行此操作".to_string())
         );
     }
-    // 目标版本号冲突必须是可读且可区分的提示：这是更新发布会遇到的主要正常失败，
-    // 不能让作者看到笼统的「HTTP 409」。
+    // 版本号无法分配必须是可读且可区分的提示：只有旧客户端不传版本号、服务端自动递增撞上
+    // 上限时才会走到这里，不能让作者看到笼统的「HTTP 409」。
     if status == StatusCode::CONFLICT
         && (code.as_deref() == Some("VERSION_NUMBER_CONFLICT")
             || message
@@ -360,7 +361,7 @@ fn map_http_error(status: StatusCode, body: &str, fallback: &str) -> String {
                     .trim()
             })
             .filter(|value| !value.is_empty())
-            .unwrap_or("目标版本号必须大于当前最大版本号");
+            .unwrap_or("服务端无法为这次发布分配版本号");
         return format!("版本号冲突：{detail}");
     }
     let detail = server_error_detail(code, message, || format!("HTTP {}", status.as_u16()));
@@ -427,8 +428,8 @@ fn normalized_origin(value: &str) -> String {
 }
 
 fn metadata_digest(metadata: &GameDistributionCreateGameRequest) -> Result<String, String> {
-    let bytes = serde_json::to_vec(metadata)
-        .map_err(|error| format!("计算发布资料摘要失败：{error}"))?;
+    let bytes =
+        serde_json::to_vec(metadata).map_err(|error| format!("计算发布资料摘要失败：{error}"))?;
     let mut hasher = Sha256::new();
     hasher.update(&bytes);
     Ok(format!("{:x}", hasher.finalize()))
@@ -451,8 +452,8 @@ async fn request_json_for_read(
     segments: &[&str],
     fallback: &str,
 ) -> Result<Value, GameDistributionReadError> {
-    let current = current_scoped_session(snapshot)
-        .map_err(GameDistributionReadError::Unavailable)?;
+    let current =
+        current_scoped_session(snapshot).map_err(GameDistributionReadError::Unavailable)?;
     let url = endpoint(snapshot, segments).map_err(GameDistributionReadError::Rejected)?;
     let request = client
         .request(method, &url)
@@ -474,10 +475,9 @@ async fn request_json_for_read(
         })
     })?;
     let status = response.status();
-    let text = response
-        .text()
-        .await
-        .map_err(|error| GameDistributionReadError::Unavailable(format!("{fallback}：读取响应失败：{error}")))?;
+    let text = response.text().await.map_err(|error| {
+        GameDistributionReadError::Unavailable(format!("{fallback}：读取响应失败：{error}"))
+    })?;
     if let Err(message) = validate_session(snapshot) {
         return Err(GameDistributionReadError::Unavailable(message));
     }
@@ -524,11 +524,20 @@ fn unavailable_state(message: Option<String>) -> GameDistributionPublicationRead
     }
 }
 
+/// 回写发布绑定；旧清单缺 `projectVersion` 时按绑定回填。
+///
+/// 绑定本身已按当前会话（账号 + origin）与 gameId 隔离，所以回填只会用**本项目**的线上版本号，
+/// 不会把别的账号/环境的版本写进这份清单。已有值一律保留：用户手动改过的版本标签，重开项目
+/// 不能被线上最大值悄悄覆盖。
 fn write_publication_binding(
     root: &Path,
     binding: GameCreationAppPublicationBinding,
 ) -> Result<(), String> {
     crate::project::mutate_manifest_at(root, |manifest| {
+        manifest.project_version = Some(resolve_game_creation_app_project_version(
+            manifest.project_version,
+            Some(&binding),
+        ));
         manifest.publication = Some(binding.clone());
         Ok(())
     })
@@ -717,7 +726,9 @@ async fn build_publication_draft(
                 .into_iter()
                 .map(|screenshot| (screenshot.asset_id, screenshot.object_key))
                 .collect::<Vec<_>>(),
-            frozen.device_support.or_else(|| entry.device_support.clone()),
+            frozen
+                .device_support
+                .or_else(|| entry.device_support.clone()),
             if frozen.input_modes.is_empty() {
                 entry.input_modes.clone()
             } else {
@@ -743,8 +754,11 @@ async fn build_publication_draft(
             entry.orientation.clone(),
         ),
     };
-    let normalize_asset_id =
-        |value: Option<String>| value.map(|value| value.trim().to_string()).filter(|value| !value.is_empty());
+    let normalize_asset_id = |value: Option<String>| {
+        value
+            .map(|value| value.trim().to_string())
+            .filter(|value| !value.is_empty())
+    };
     let cover = if cover_asset_id.is_some() || cover_object_key.is_some() {
         Some(GameDistributionPublicationImageDraft {
             asset_id: normalize_asset_id(cover_asset_id),
@@ -839,8 +853,14 @@ pub(crate) async fn read_game_distribution_publication(
         Some(binding) => {
             let game_id = binding.game_id.trim().to_string();
             let segments = ["api", "game-distribution", "my-games", game_id.as_str()];
-            match request_json_for_read(&client, &snapshot, Method::GET, &segments, "读取线上作品失败")
-                .await
+            match request_json_for_read(
+                &client,
+                &snapshot,
+                Method::GET,
+                &segments,
+                "读取线上作品失败",
+            )
+            .await
             {
                 Ok(value) => {
                     let entry =
@@ -865,7 +885,9 @@ pub(crate) async fn read_game_distribution_publication(
                         message: Some(format!("无法刷新线上状态：{message}")),
                     })
                 }
-                Err(GameDistributionReadError::Rejected(message)) => Ok(unavailable_state(Some(message))),
+                Err(GameDistributionReadError::Rejected(message)) => {
+                    Ok(unavailable_state(Some(message)))
+                }
             }
         }
         None => {
@@ -912,6 +934,36 @@ pub(crate) async fn read_game_distribution_publication(
     }
 }
 
+/// 只写项目清单里的用户发行版本标签（`项目版本 vN`），不发布、不改发布绑定。
+///
+/// 版本标签是"对同一个 gameId 反复提交的标签"，所以这里不做递增校验、也不与线上版本比较：
+/// 重复提交同一标签与回退到更小标签都合法，具体提交实例由不可变 versionId 区分。非法输入
+/// （0 或超出安全整数）在这里失败关闭，避免坏值落进清单。
+///
+/// 返回整份 manifest，调用方据此同步工作台状态（与发布成功同一条回写语义）。
+#[tauri::command]
+pub(crate) fn update_game_distribution_project_version(
+    project_path: String,
+    project_version: u64,
+) -> Result<GameCreationAppManifest, String> {
+    let root = Path::new(project_path.trim());
+    if root.as_os_str().is_empty() {
+        return Err("发布需要绑定本地项目".to_string());
+    }
+    if project_version == 0 {
+        return Err("项目版本必须是大于 0 的整数".to_string());
+    }
+    if project_version > MAX_SAFE_VERSION_NUMBER {
+        return Err("项目版本超出安全整数范围".to_string());
+    }
+    // 与发布同一条门禁：改版本标签属于发布资料的一部分，不是独立的新权限。
+    crate::project::enforce_project_permission_policy(root, "project.export_package")?;
+    crate::project::mutate_manifest_at(root, |manifest| {
+        manifest.project_version = Some(project_version);
+        Ok(manifest.clone())
+    })
+}
+
 fn read_cover_asset_id(payload: &CoverGenerationPayload) -> Option<String> {
     payload
         .asset_object_id
@@ -1250,17 +1302,17 @@ pub(crate) async fn publish_local_project_game(
         .map(str::trim)
         .filter(|value| !value.is_empty())
         .map(str::to_string);
-    // 版本号按 JSON number 传输：超出安全整数就已经丢精度，必须在发请求前失败关闭。
+    // 项目版本按 JSON number 传输：超出安全整数就已经丢精度，必须在发请求前失败关闭。
     if let Some(number) = version_number {
         if number == 0 {
-            return Err("目标版本号必须是大于 0 的整数".to_string());
+            return Err("项目版本必须是大于 0 的整数".to_string());
         }
         if number > MAX_SAFE_VERSION_NUMBER {
-            return Err("目标版本号超出安全整数范围".to_string());
+            return Err("项目版本超出安全整数范围".to_string());
         }
     }
     if target_game_id.is_some() && version_number.is_none() {
-        return Err("更新游戏必须填写目标版本号".to_string());
+        return Err("更新游戏必须填写项目版本".to_string());
     }
     if target_game_id.is_some() && expected_publication_revision.is_none() {
         return Err("缺少公开修订号，请重新打开发布面板后再试".to_string());
@@ -1463,8 +1515,10 @@ pub(crate) async fn publish_local_project_game(
                 uploaded.status.clone()
             }
         });
-    // 发布成功：把平台作品绑定和最近版本状态写回本地清单。写回失败不回滚已经成功的发布，
-    // 但会把错误交给作者——否则下次打开项目会退回首次发布，甚至可能重复建作品。
+    // 发布成功：把平台作品绑定和最近版本状态写回本地清单，并把项目版本标签对齐到服务端返回值
+    // （服务端是版本号的唯一事实来源；旧客户端没传版本号时这里会把自动递增的结果记下来）。
+    // 写回失败不回滚已经成功的发布，但会把错误交给作者——否则下次打开项目会退回首次发布，
+    // 甚至可能重复建作品。
     let binding = GameCreationAppPublicationBinding {
         account_id: snapshot.user_id.clone(),
         api_base_url: normalized_origin(&snapshot.api_base_url),
@@ -1475,6 +1529,7 @@ pub(crate) async fn publish_local_project_game(
         status: Some(status.clone()),
     };
     let manifest = crate::project::mutate_manifest_at(root, |manifest| {
+        manifest.project_version = Some(version.version_number);
         manifest.publication = Some(binding.clone());
         Ok(manifest.clone())
     })?;
@@ -1557,14 +1612,15 @@ mod tests {
 
     #[test]
     fn version_number_conflict_is_a_readable_distinct_message() {
-        // 更新发布会遇到的主要正常失败：必须让作者看到「版本号冲突」而不是笼统 HTTP 409。
+        // 只有旧客户端不传版本号、服务端自动递增撞上上限时才可能走到这里；必须让作者看到
+        // 「版本号冲突」而不是笼统 HTTP 409。
         assert_eq!(
             map_http_error(
                 StatusCode::CONFLICT,
-                r#"{"error":{"code":"VERSION_NUMBER_CONFLICT","message":"VERSION_NUMBER_CONFLICT: 版本号 3 必须严格大于当前最大版本号 5"}}"#,
+                r#"{"error":{"code":"VERSION_NUMBER_CONFLICT","message":"VERSION_NUMBER_CONFLICT: 版本号已达上限 18446744073709551615，无法自动递增"}}"#,
                 "创建游戏发行版本失败"
             ),
-            "版本号冲突：版本号 3 必须严格大于当前最大版本号 5"
+            "版本号冲突：版本号已达上限 18446744073709551615，无法自动递增"
         );
         // 没有 message 时给出兜底提示，不泄漏原始英文代码。
         assert_eq!(
@@ -1573,10 +1629,21 @@ mod tests {
                 r#"{"error":{"code":"VERSION_NUMBER_CONFLICT"}}"#,
                 "创建游戏发行版本失败"
             ),
-            "版本号冲突：目标版本号必须大于当前最大版本号"
+            "版本号冲突：服务端无法为这次发布分配版本号"
         );
     }
 
+    #[test]
+    fn repeated_or_lower_project_version_is_not_a_client_side_conflict() {
+        // 重复提交同一版本、回退到更小版本都由服务端接受，客户端不得在本地把它当成冲突。
+        let repeated = map_http_error(
+            StatusCode::BAD_REQUEST,
+            r#"{"error":{"code":"BAD_REQUEST","message":"版本号必须是大于 0 的整数"}}"#,
+            "创建游戏发行版本失败",
+        );
+        assert_eq!(repeated, "创建游戏发行版本失败：版本号必须是大于 0 的整数");
+    }
+
     #[test]
     fn metadata_digest_changes_with_frozen_metadata() {
         let mut metadata = GameDistributionCreateGameRequest {
diff --git a/apps/ai-game-creator-shell/src-tauri/src/game_publish_attempt.rs b/apps/ai-game-creator-shell/src-tauri/src/game_publish_attempt.rs
index 8ba251276..b7af2d4cd 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/game_publish_attempt.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/game_publish_attempt.rs
@@ -36,7 +36,7 @@ struct GamePublishAttemptRecord {
     /// 目标游戏身份：更新已有作品时非空；首次发布为空。
     #[serde(default)]
     target_game_id: Option<String>,
-    /// 用户选择的目标版本号：更新发布必须记录，换了目标版本就是一次新尝试。
+    /// 这次发布提交的项目版本标签（清单里的 `projectVersion`）：换了标签就是一次新尝试。
     #[serde(default)]
     target_version_number: Option<u64>,
     /// 随版本冻结的资料摘要：同一份包换了资料修订也必须换根键，不能只按 ZIP 摘要吞掉新发布。
@@ -342,22 +342,28 @@ mod tests {
     fn same_package_reuses_root_key_and_new_package_rotates_it() {
         let dir = fixture_dir("reuse");
         let sha = "a".repeat(64);
-        let (first, reused) =
-            resolve_game_publish_root_key(&dir, intent("user-1", "https://dev.test", "proj-1", &sha))
-                .expect("first key");
+        let (first, reused) = resolve_game_publish_root_key(
+            &dir,
+            intent("user-1", "https://dev.test", "proj-1", &sha),
+        )
+        .expect("first key");
         assert!(!reused);
         assert!(first.starts_with("agc-publish-"));
 
-        let (again, reused) =
-            resolve_game_publish_root_key(&dir, intent("user-1", "https://dev.test", "proj-1", &sha))
-                .expect("reused key");
+        let (again, reused) = resolve_game_publish_root_key(
+            &dir,
+            intent("user-1", "https://dev.test", "proj-1", &sha),
+        )
+        .expect("reused key");
         assert!(reused, "同一份包重发必须复用同一个根幂等键");
         assert_eq!(again, first);
 
         // 重启不改变结论：换一个进程视角重新读盘仍然是同一个键。
-        let (after_restart, reused) =
-            resolve_game_publish_root_key(&dir, intent("user-1", "https://dev.test", "proj-1", &sha))
-                .expect("restarted key");
+        let (after_restart, reused) = resolve_game_publish_root_key(
+            &dir,
+            intent("user-1", "https://dev.test", "proj-1", &sha),
+        )
+        .expect("restarted key");
         assert!(reused);
         assert_eq!(after_restart, first);
 
@@ -398,8 +404,8 @@ mod tests {
         bumped_metadata.metadata_digest = &digest_b;
         bumped_metadata.target_game_id = Some("game-1");
         bumped_metadata.target_version_number = Some(4);
-        let (metadata_rotated, reused) = resolve_game_publish_root_key(&dir, bumped_metadata)
-            .expect("metadata rotated key");
+        let (metadata_rotated, reused) =
+            resolve_game_publish_root_key(&dir, bumped_metadata).expect("metadata rotated key");
         assert!(!reused, "资料修订变化也必须换键");
         assert_ne!(metadata_rotated, bumped);
 
@@ -414,9 +420,11 @@ mod tests {
     fn attempts_are_scoped_per_account_origin_and_project() {
         let dir = fixture_dir("scope");
         let sha = "c".repeat(64);
-        let (base, _) =
-            resolve_game_publish_root_key(&dir, intent("user-1", "https://dev.test", "proj-1", &sha))
-                .expect("base key");
+        let (base, _) = resolve_game_publish_root_key(
+            &dir,
+            intent("user-1", "https://dev.test", "proj-1", &sha),
+        )
+        .expect("base key");
         for (account, origin, project) in [
             ("user-2", "https://dev.test", "proj-1"),
             ("user-1", "https://release.test", "proj-1"),
@@ -435,14 +443,18 @@ mod tests {
     fn clearing_attempt_rotates_the_next_publish_of_the_same_package() {
         let dir = fixture_dir("clear");
         let sha = "d".repeat(64);
-        let (first, _) =
-            resolve_game_publish_root_key(&dir, intent("user-1", "https://dev.test", "proj-1", &sha))
-                .expect("first key");
+        let (first, _) = resolve_game_publish_root_key(
+            &dir,
+            intent("user-1", "https://dev.test", "proj-1", &sha),
+        )
+        .expect("first key");
         clear_game_publish_attempt(&dir, "user-1", "https://dev.test", "proj-1")
             .expect("clear attempt");
-        let (second, reused) =
-            resolve_game_publish_root_key(&dir, intent("user-1", "https://dev.test", "proj-1", &sha))
-                .expect("second key");
+        let (second, reused) = resolve_game_publish_root_key(
+            &dir,
+            intent("user-1", "https://dev.test", "proj-1", &sha),
+        )
+        .expect("second key");
         assert!(!reused, "收口过的尝试不再复用，下一次发布是新版本");
         assert_ne!(second, first);
         // 清掉不存在的记录是幂等的空操作。
diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/export.rs b/apps/ai-game-creator-shell/src-tauri/src/project/export.rs
index 09a9fc13b..2fe8aa290 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/export.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/export.rs
@@ -546,7 +546,6 @@ pub(crate) fn read_local_project_export_package_at(
         }
         let content = normalize_release_asset_references(&path, content);
         entries.push((path, content));
-
     }
     entries.sort_by(|left, right| left.0.cmp(&right.0));
     if entries.is_empty() {
@@ -594,7 +593,11 @@ pub(crate) fn read_local_project_export_package_at(
 
 fn normalize_release_asset_references(path: &str, content: Vec<u8>) -> Vec<u8> {
     let is_text = matches!(
-        path.rsplit('.').next().unwrap_or_default().to_ascii_lowercase().as_str(),
+        path.rsplit('.')
+            .next()
+            .unwrap_or_default()
+            .to_ascii_lowercase()
+            .as_str(),
         "css" | "html" | "htm" | "js" | "json" | "mjs"
     );
     if !is_text {
diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/manifest.rs b/apps/ai-game-creator-shell/src-tauri/src/project/manifest.rs
index a09c68f68..18694e112 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/manifest.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/manifest.rs
@@ -205,6 +205,17 @@ fn validate_manifest_cocos_project_root(value: Option<&str>) -> Result<(), Strin
     Ok(())
 }
 
+/// 唯一用户发行版本标签：缺省合法（旧清单），写了就必须是正整数。
+///
+/// `0` 不是"未设置"的别名——未设置就是字段缺失；一旦落盘 0，服务端与面板都会把它当成非法
+/// 版本号，所以在读写两侧都失败关闭，避免坏值被静默传播。
+fn validate_manifest_project_version(value: Option<u64>) -> Result<(), String> {
+    if value == Some(0) {
+        return Err("manifest projectVersion 必须是大于 0 的整数".to_string());
+    }
+    Ok(())
+}
+
 /// Unity 工程身份来自根目录普通文件和目录；禁止借助链接跳到其它工程。
 pub(crate) fn discover_local_unity_project_root(root: &Path) -> Result<Option<String>, String> {
     if root.as_os_str().is_empty() || !root.is_absolute() || project_path_has_control_chars(root) {
@@ -2273,6 +2284,8 @@ pub(crate) fn read_manifest(path: &Path) -> Result<GameCreationAppManifest, Stri
         .map_err(|error| format!("校验 {label} Godot 项目根失败：{error}"))?;
     validate_manifest_cocos_project_root(manifest.cocos_project_root.as_deref())
         .map_err(|error| format!("校验 {label} Cocos 项目根失败：{error}"))?;
+    validate_manifest_project_version(manifest.project_version)
+        .map_err(|error| format!("校验 {label} 项目版本标签失败：{error}"))?;
     validate_game_iteration_versions(&manifest.versions)
         .map_err(|error| format!("校验 {label} 项目版本失败：{error}"))?;
     Ok(manifest)
@@ -2466,6 +2479,8 @@ where
         .map_err(|error| format!("校验 manifest Godot 项目根失败：{error}"))?;
     validate_manifest_cocos_project_root(manifest.cocos_project_root.as_deref())
         .map_err(|error| format!("校验 manifest Cocos 项目根失败：{error}"))?;
+    validate_manifest_project_version(manifest.project_version)
+        .map_err(|error| format!("校验 manifest 项目版本标签失败：{error}"))?;
     if let Some(parent) = path.parent() {
         ensure_game_creator_private_directory_tree(parent, "manifest 目录")?;
         prepare_game_creator_private_path_for_read(parent, true, "manifest 目录")?;
diff --git a/apps/ai-game-creator-shell/src/App.tsx b/apps/ai-game-creator-shell/src/App.tsx
index 89f01ccf0..1c3b44a43 100644
--- a/apps/ai-game-creator-shell/src/App.tsx
+++ b/apps/ai-game-creator-shell/src/App.tsx
@@ -1813,6 +1813,7 @@ export function App({
             // 工作台状态，两处面板挂载点（普通项目 / DirectProject）共享同一份状态。
             if (published.manifest) setManifest(published.manifest);
           }}
+          onManifestUpdated={setManifest}
         />
         <GamePublishProgressDialog
           progress={publishProgress}
@@ -1947,6 +1948,7 @@ export function App({
         onPublished={(published) => {
           if (published.manifest) setManifest(published.manifest);
         }}
+        onManifestUpdated={setManifest}
       />
       <GamePublishProgressDialog
         progress={publishProgress}
diff --git a/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx b/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
index 5a02cb470..3c9a35acf 100644
--- a/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
+++ b/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
@@ -1,7 +1,10 @@
 import { Eye, Trash2 } from 'lucide-react';
 import { useEffect, useRef, useState } from 'react';
 
-import type { GameCreationAppManifest } from '../../../../../packages/shared/src/contracts/gameCreationApp';
+import {
+  resolveGameCreationAppProjectVersion,
+  type GameCreationAppManifest,
+} from '../../../../../packages/shared/src/contracts/gameCreationApp';
 import { GAME_DISTRIBUTION_CATEGORIES } from '../../../../../packages/shared/src/contracts/gameDistribution';
 import { IMAGE_MODEL_GPT_IMAGE_2 } from '../../../../../src/components/image-editor/ImageCanvasGenerationModel';
 import { resolveTauriInvoke } from '../../app/tauri';
@@ -17,6 +20,7 @@ import {
   publishLocalProjectGame,
   readGameCoverGenerationPrice,
   readGameDistributionPublication,
+  saveGameDistributionProjectVersion,
   suggestGameDistributionPublishMetadata,
 } from '../../services/gameDistributionPublish';
 import {
@@ -122,8 +126,8 @@ function publicationVersionStatusLabel(status: string | null | undefined) {
   return PUBLICATION_VERSION_STATUS_LABELS[normalized] ?? normalized;
 }
 
-/** 目标版本号只接受正整数安全整数；非法输入返回 null，由调用方给出可读错误。 */
-function parseTargetVersion(value: string): number | null {
+/** 项目版本只接受正整数安全整数；非法输入返回 null，由调用方给出可读错误。 */
+function parseProjectVersion(value: string): number | null {
   const trimmed = value.trim();
   if (!/^\d+$/u.test(trimmed)) return null;
   const parsed = Number(trimmed);
@@ -227,6 +231,7 @@ export function GameDistributionPublishPanel({
   packageResult,
   onClose,
   onPublished,
+  onManifestUpdated,
 }: {
   open: boolean;
   projectPath: string;
@@ -234,6 +239,8 @@ export function GameDistributionPublishPanel({
   packageResult: LocalProjectExportPackageResult | null;
   onClose: () => void;
   onPublished?: (result: GameDistributionPublishResult) => void;
+  /** 项目版本写回本地清单后回调整份 manifest，让工作台同步这份唯一发行版本。 */
+  onManifestUpdated?: (manifest: GameCreationAppManifest) => void;
 }) {
   const [title, setTitle] = useState('');
   const [summary, setSummary] = useState('');
@@ -272,9 +279,13 @@ export function GameDistributionPublishPanel({
   >(null);
   const [publicationRefreshed, setPublicationRefreshed] = useState(false);
   const [publicationMessage, setPublicationMessage] = useState('');
-  const [targetVersion, setTargetVersion] = useState('1');
-  /** 已知最大版本号；首次发布为 0。 */
+  /** 项目清单里唯一的用户发行版本标签（`项目版本 vN`），输入框的当前文本。 */
+  const [projectVersion, setProjectVersion] = useState('1');
+  /** 已写回清单的项目版本；失焦时用它判断是否需要落盘。 */
+  const [savedProjectVersion, setSavedProjectVersion] = useState(0);
+  /** 线上最近提交的版本号；首次发布为 0（没有线上版本）。 */
   const [latestVersionNumber, setLatestVersionNumber] = useState(0);
+  const projectVersionSaveRequestRef = useRef(0);
   const metadataSuggestionRequestRef = useRef(0);
   const publicationRequestRef = useRef(0);
   const publicationDraftAppliedRef = useRef(false);
@@ -317,7 +328,8 @@ export function GameDistributionPublishPanel({
     setPublicationBinding(null);
     setPublicationRefreshed(false);
     setPublicationMessage('');
-    setTargetVersion('1');
+    setProjectVersion(String(resolveGameCreationAppProjectVersion(manifest)));
+    setSavedProjectVersion(resolveGameCreationAppProjectVersion(manifest));
     setLatestVersionNumber(0);
     summaryTouchedRef.current = false;
     categoryTouchedRef.current = false;
@@ -381,14 +393,19 @@ export function GameDistributionPublishPanel({
           return;
         }
         if (recovery.state === 'update') {
-          const latest = recovery.binding.latestVersionNumber ?? null;
-          const max = latest ?? 0;
+          // 线上最近提交的版本号只用于展示与旧清单回填；用户输入的项目版本才是这次提交的标签。
+          const latestVersionNumber = recovery.binding.latestVersionNumber ?? 0;
+          const resolved = resolveGameCreationAppProjectVersion(
+            manifest,
+            recovery.binding,
+          );
           setPublicationState('update');
           setPublicationBinding(recovery.binding);
           setPublicationRefreshed(recovery.refreshed);
           setPublicationMessage(recovery.message?.trim() ?? '');
-          setLatestVersionNumber(max);
-          setTargetVersion(String(max + 1));
+          setLatestVersionNumber(latestVersionNumber);
+          setProjectVersion(String(resolved));
+          setSavedProjectVersion(resolved);
           if (recovery.draft) {
             applyPublicationDraft(recovery.draft);
           }
@@ -657,6 +674,40 @@ export function GameDistributionPublishPanel({
     if (screenshotInputRef.current) screenshotInputRef.current.value = '';
   }
 
+  /**
+   * 失焦即落盘：清单里的项目版本必须是用户改过的那个值，而不是只在这次面板里有效。
+   *
+   * 非法输入不写盘、直接回退到已保存值并给出可读原因；落盘失败保留用户输入（发布仍用输入值），
+   * 只提示失败，避免"看起来没改成功、其实改了一半"。
+   */
+  async function handleProjectVersionCommit() {
+    const parsed = parseProjectVersion(projectVersion);
+    if (parsed === null) {
+      setError('项目版本必须是大于 0 的整数');
+      setProjectVersion(String(savedProjectVersion));
+      return;
+    }
+    if (parsed === savedProjectVersion) return;
+    const requestId = ++projectVersionSaveRequestRef.current;
+    try {
+      const updated = await saveGameDistributionProjectVersion({
+        projectPath,
+        projectVersion: parsed,
+      });
+      if (requestId !== projectVersionSaveRequestRef.current) return;
+      setSavedProjectVersion(parsed);
+      setError('');
+      if (updated) onManifestUpdated?.(updated);
+    } catch (saveError) {
+      if (requestId !== projectVersionSaveRequestRef.current) return;
+      setError(
+        saveError instanceof Error
+          ? saveError.message
+          : '项目版本保存失败，请重试',
+      );
+    }
+  }
+
   async function handleSubmit() {
     if (!packageResult || !projectPath.trim()) {
       setError('请先导出有效的试玩包');
@@ -677,15 +728,9 @@ export function GameDistributionPublishPanel({
       );
       return;
     }
-    const parsedTargetVersion = parseTargetVersion(targetVersion);
-    if (parsedTargetVersion === null) {
-      setError('目标版本号必须是大于 0 的整数');
-      return;
-    }
-    if (parsedTargetVersion <= latestVersionNumber) {
-      setError(
-        `目标版本号必须大于当前最大版本号 ${latestVersionNumber}，不能覆盖已有版本`,
-      );
+    const parsedProjectVersion = parseProjectVersion(projectVersion);
+    if (parsedProjectVersion === null) {
+      setError('项目版本必须是大于 0 的整数');
       return;
     }
     if (!cover) {
@@ -756,7 +801,7 @@ export function GameDistributionPublishPanel({
         },
         gameId:
           publicationState === 'update' ? publicationBinding?.gameId ?? null : null,
-        versionNumber: parsedTargetVersion,
+        versionNumber: parsedProjectVersion,
         expectedPublicationRevision:
           publicationState === 'update' ? publicationBinding?.revision ?? null : null,
       });
@@ -816,7 +861,7 @@ export function GameDistributionPublishPanel({
             <strong>已提交审核</strong>
             <p>版本已进入审核队列，审核通过后才会在游戏广场公开展示。</p>
             <p className="game-distribution-publish-panel__mono">
-              版本 {result.versionNumber} ·{' '}
+              项目版本 v{result.versionNumber} ·{' '}
               {result.packageSizeBytes.toLocaleString()} B ·{' '}
               {result.packageSha256.slice(0, 16)}…
             </p>
@@ -843,8 +888,8 @@ export function GameDistributionPublishPanel({
               </strong>
               {publicationState === 'update' && publicationBinding ? (
                 <span>
-                  当前版本{' '}
-                  {latestVersionNumber > 0 ? latestVersionNumber : '—'} ·{' '}
+                  线上最近提交{' '}
+                  {latestVersionNumber > 0 ? `v${latestVersionNumber}` : '—'} ·{' '}
                   {publicationVersionStatusLabel(publicationBinding.status)}
                   {publicationRefreshed
                     ? ''
@@ -905,26 +950,33 @@ export function GameDistributionPublishPanel({
                 </select>
               </label>
               <label>
-                目标版本号
+                <span className="game-distribution-publish-panel__version-label">
+                  项目版本
+                  <span className="game-distribution-publish-panel__version-tag">
+                    {`v${projectVersion.trim() || '—'}`}
+                  </span>
+                </span>
                 <input
                   type="number"
                   min={1}
                   step={1}
                   inputMode="numeric"
-                  value={targetVersion}
+                  aria-label="项目版本"
+                  value={projectVersion}
                   disabled={
                     busy ||
                     generatingCover ||
                     publicationState === 'checking' ||
                     publicationState === 'unavailable'
                   }
-                  onChange={(event) => setTargetVersion(event.target.value)}
+                  onChange={(event) => setProjectVersion(event.target.value)}
+                  onBlur={() => void handleProjectVersionCommit()}
                 />
               </label>
               <span className="game-distribution-publish-panel__hint">
                 {latestVersionNumber > 0
-                  ? `当前最大版本号 ${latestVersionNumber}，建议 ${latestVersionNumber + 1}；允许跳号，但不能小于等于当前版本号。`
-                  : '首次发布建议使用版本号 1；版本号必须是大于 0 的整数。'}
+                  ? `版本标签不要求递增：可以重复提交同一个版本，也可以回退到更小的版本号（线上最近提交 v${latestVersionNumber}）。`
+                  : '第一次发布建议用 v1；版本号是大于 0 的整数，之后可以重复提交或回退，不要求递增。'}
               </span>
               <span
                 className="game-distribution-publish-panel__metadata-hint"
diff --git a/apps/ai-game-creator-shell/src/services/gameDistributionPublish.ts b/apps/ai-game-creator-shell/src/services/gameDistributionPublish.ts
index 1db81edf0..96fd2ae61 100644
--- a/apps/ai-game-creator-shell/src/services/gameDistributionPublish.ts
+++ b/apps/ai-game-creator-shell/src/services/gameDistributionPublish.ts
@@ -1,6 +1,7 @@
-import type {
-  GameCreationAppManifest,
-  GameCreationAppPublicationBinding,
+import {
+  resolveGameCreationAppProjectVersion,
+  type GameCreationAppManifest,
+  type GameCreationAppPublicationBinding,
 } from '../../../../packages/shared/src/contracts/gameCreationApp';
 import type {
   GameDistributionCategory,
@@ -135,6 +136,36 @@ export async function readGameDistributionPublication(
   return payload;
 }
 
+/**
+ * 把「项目版本」写回本地清单。
+ *
+ * 版本标签是清单里唯一的用户发行版本字段：面板里改完就要落盘，重开项目显示的才是同一个值。
+ * 这里只改这个字段，不发布、不动发布绑定与线上状态。
+ *
+ * @returns 写回后的整份 manifest；原生宿主没有返回清单（例如测试替身）时为 null，调用方保留
+ * 本地状态即可，不视为失败。
+ */
+export async function saveGameDistributionProjectVersion(
+  args: { projectPath: string; projectVersion: number },
+  invoke?: TauriInvoke,
+): Promise<GameCreationAppManifest | null> {
+  const projectPath = args.projectPath.trim();
+  if (!projectPath) {
+    throw new Error('发布需要绑定本地项目');
+  }
+  const projectVersion = args.projectVersion;
+  if (!Number.isSafeInteger(projectVersion) || projectVersion <= 0) {
+    throw new Error('项目版本必须是大于 0 的安全整数');
+  }
+  const payload = await requireNativeInvoke(invoke)<
+    GameCreationAppManifest | null | undefined
+  >('update_game_distribution_project_version', {
+    projectPath,
+    projectVersion,
+  });
+  return payload ?? null;
+}
+
 export type GameDistributionPublishMetadataSuggestion = {
   summary: string;
   category: GameDistributionCategory;
@@ -294,11 +325,16 @@ export async function publishLocalProjectGame(args: {
   metadata?: Partial<GameDistributionPublishMetadata>;
   /**
    * 更新已有作品时的目标游戏身份（来自发布绑定）。提供时必须同时给出
-   * `versionNumber` 与 `expectedPublicationRevision`：原生会跳过 create game，
-   * 直接在原 gameId 上创建新版本。
+   * `expectedPublicationRevision`：原生会跳过 create game，直接在原 gameId 上创建新版本。
    */
   gameId?: string | null;
-  /** 用户选择的目标正整数版本号；首次发布默认 1。不传则退回服务端自动递增。 */
+  /**
+   * 这次提交使用的项目版本标签。
+   *
+   * 缺省时取清单的唯一发行版本 `manifest.projectVersion`（缺失按发布绑定回填，最终落到首版 1）：
+   * 发布面板编辑的就是这个字段，所以「用户改了什么、这次就提交什么」，不存在第二份版本来源。
+   * 同一个版本标签可以反复提交，每次提交生成新的 `versionId`。
+   */
   versionNumber?: number | null;
   /** 更新送审所需的公开修订号 CAS；来自发布绑定。 */
   expectedPublicationRevision?: number | null;
@@ -321,30 +357,24 @@ export async function publishLocalProjectGame(args: {
     throw new Error('发布需要本地项目标识，请重新打开项目后再试');
   }
   const gameId = args.gameId?.trim() ?? '';
-  const versionNumber = args.versionNumber ?? null;
-  if (versionNumber !== null) {
-    if (
-      !Number.isSafeInteger(versionNumber) ||
-      versionNumber <= 0
-    ) {
-      throw new Error('目标版本号必须是大于 0 的安全整数');
-    }
+  // 版本标签只有一个来源：调用方显式传入的值优先（发布面板编辑中的输入），否则回落到清单里
+  // 的项目版本（旧清单按发布绑定回填）。服务端的自动递增路径只服务不传版本号的老客户端。
+  const versionNumber =
+    args.versionNumber ?? resolveGameCreationAppProjectVersion(args.manifest);
+  if (!Number.isSafeInteger(versionNumber) || versionNumber <= 0) {
+    throw new Error('项目版本必须是大于 0 的安全整数');
   }
-  if (gameId) {
-    if (versionNumber === null) {
-      throw new Error('更新游戏必须填写目标版本号');
-    }
-    if (
-      args.expectedPublicationRevision === null ||
-      args.expectedPublicationRevision === undefined
-    ) {
-      throw new Error('缺少公开修订号，请重新打开发布面板后再试');
-    }
+  if (
+    gameId &&
+    (args.expectedPublicationRevision === null ||
+      args.expectedPublicationRevision === undefined)
+  ) {
+    throw new Error('缺少公开修订号，请重新打开发布面板后再试');
   }
   const gameMetadata = toCreateGameRequest(metadata, localProjectId);
   const rootKey = args.idempotencyKey?.trim() ?? '';
   // 发布编排、认证、origin、分片续传与送审都在 Rust 完成；渲染进程只传递
-  // 已归一化的资料、目标游戏/版本和本地项目相对包路径，不接触 token、base URL 或整包字节。
+  // 已归一化的资料、项目版本和本地项目相对包路径，不接触 token、base URL 或整包字节。
   return args.invoke<GameDistributionPublishResult>(
     'publish_local_project_game',
     {
@@ -352,7 +382,7 @@ export async function publishLocalProjectGame(args: {
       packageRelativePath,
       metadata: gameMetadata,
       ...(gameId ? { gameId } : {}),
-      ...(versionNumber !== null ? { versionNumber } : {}),
+      versionNumber,
       ...(gameId
         ? { expectedPublicationRevision: args.expectedPublicationRevision }
         : {}),
diff --git a/apps/ai-game-creator-shell/src/styles.css b/apps/ai-game-creator-shell/src/styles.css
index 23721cf63..8be9d91fa 100644
--- a/apps/ai-game-creator-shell/src/styles.css
+++ b/apps/ai-game-creator-shell/src/styles.css
@@ -3737,6 +3737,23 @@ textarea {
   line-height: 1.5;
 }
 
+/* 项目版本标签：与榜单/详情页看到的「vN」一致，避免用户以为它是内部版本号。 */
+.game-distribution-publish-panel__version-label {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.game-distribution-publish-panel__version-tag {
+  padding: 1px 8px;
+  border-radius: 999px;
+  background: rgb(168 102 61 / 12%);
+  color: #a8663d;
+  font-size: 11px;
+  font-weight: 800;
+  font-variant-numeric: tabular-nums;
+}
+
 .game-distribution-publish-panel__cover-editor {
   display: grid;
   align-content: start;
diff --git a/apps/ai-game-creator-shell/tests/gameDistributionPublish.test.ts b/apps/ai-game-creator-shell/tests/gameDistributionPublish.test.ts
index 67be97d81..1f56aaa31 100644
--- a/apps/ai-game-creator-shell/tests/gameDistributionPublish.test.ts
+++ b/apps/ai-game-creator-shell/tests/gameDistributionPublish.test.ts
@@ -8,6 +8,7 @@ import {
   publishLocalProjectGame,
   readGameCoverGenerationPrice,
   readGameDistributionPublication,
+  saveGameDistributionProjectVersion,
   suggestGameDistributionPublishMetadata,
 } from '../src/services/gameDistributionPublish';
 const MANIFEST = {
@@ -291,7 +292,7 @@ describe('Rust 发布 facade', () => {
     ).rejects.toThrow('发布状态回读结果无效');
   });
 
-  test('更新发布会带上原 gameId、目标版本号与公开修订号', async () => {
+  test('更新发布会带上原 gameId、项目版本与公开修订号', async () => {
     const { invoke, calls } = installNativeInvoke(() => PUBLISH_RESULT);
 
     await publishLocalProjectGame({
@@ -312,18 +313,41 @@ describe('Rust 发布 facade', () => {
     });
   });
 
-  test('更新发布缺少目标版本号或公开修订号时在 native command 前失败关闭', async () => {
+  test('未显式给出项目版本时沿用清单里的唯一发行版本', async () => {
+    const { invoke, calls } = installNativeInvoke(() => PUBLISH_RESULT);
+
+    // 旧清单没有 projectVersion：首版回落 1，不把「没写」变成服务端自动递增。
+    await publishLocalProjectGame({
+      invoke,
+      projectPath: '/tmp/project',
+      packageRelativePath: 'exports/playtest-package-1.zip',
+      manifest: MANIFEST,
+      metadata: { coverAssetId: 'asset_cover' },
+    });
+    expect(calls[0]?.args).toMatchObject({ versionNumber: 1 });
+
+    // 清单写过的项目版本就是这次提交的标签；同一标签重复提交由服务端接受。
+    await publishLocalProjectGame({
+      invoke,
+      projectPath: '/tmp/project',
+      packageRelativePath: 'exports/playtest-package-1.zip',
+      manifest: {
+        ...MANIFEST,
+        projectVersion: 4,
+      } as unknown as GameCreationAppManifest,
+      metadata: { coverAssetId: 'asset_cover' },
+      gameId: 'game_9',
+      expectedPublicationRevision: 7,
+    });
+    expect(calls[1]?.args).toMatchObject({
+      gameId: 'game_9',
+      versionNumber: 4,
+      expectedPublicationRevision: 7,
+    });
+  });
+
+  test('更新发布缺少公开修订号时在 native command 前失败关闭', async () => {
     const invoke = vi.fn() as unknown as TauriInvoke;
-    await expect(
-      publishLocalProjectGame({
-        invoke,
-        projectPath: '/tmp/project',
-        packageRelativePath: 'exports/playtest-package-1.zip',
-        manifest: MANIFEST,
-        metadata: { coverAssetId: 'asset_cover' },
-        gameId: 'game_9',
-      }),
-    ).rejects.toThrow('更新游戏必须填写目标版本号');
     await expect(
       publishLocalProjectGame({
         invoke,
@@ -338,7 +362,7 @@ describe('Rust 发布 facade', () => {
     expect(invoke).not.toHaveBeenCalled();
   });
 
-  test('目标版本号不是安全整数时在 native command 前失败关闭', async () => {
+  test('项目版本不是正整数安全整数时在 native command 前失败关闭', async () => {
     const invoke = vi.fn() as unknown as TauriInvoke;
     for (const versionNumber of [0, -1, 1.5, Number.MAX_SAFE_INTEGER + 1]) {
       await expect(
@@ -350,8 +374,46 @@ describe('Rust 发布 facade', () => {
           metadata: { coverAssetId: 'asset_cover' },
           versionNumber,
         }),
-      ).rejects.toThrow('目标版本号必须是大于 0 的安全整数');
+      ).rejects.toThrow('项目版本必须是大于 0 的安全整数');
     }
     expect(invoke).not.toHaveBeenCalled();
   });
+
+  test('项目版本写回清单通过单个 native command 并回传整份 manifest', async () => {
+    const savedManifest = {
+      ...MANIFEST,
+      projectVersion: 6,
+    } as unknown as GameCreationAppManifest;
+    const { invoke, calls } = installNativeInvoke(() => savedManifest);
+
+    const updated = await saveGameDistributionProjectVersion(
+      { projectPath: '/tmp/project', projectVersion: 6 },
+      invoke,
+    );
+
+    expect(updated).toEqual(savedManifest);
+    expect(calls).toEqual([
+      {
+        command: 'update_game_distribution_project_version',
+        args: { projectPath: '/tmp/project', projectVersion: 6 },
+      },
+    ]);
+  });
+
+  test('项目版本写回在非法输入时失败关闭', async () => {
+    const invoke = vi.fn() as unknown as TauriInvoke;
+    await expect(
+      saveGameDistributionProjectVersion(
+        { projectPath: '/tmp/project', projectVersion: 0 },
+        invoke,
+      ),
+    ).rejects.toThrow('项目版本必须是大于 0 的安全整数');
+    await expect(
+      saveGameDistributionProjectVersion(
+        { projectPath: '   ', projectVersion: 2 },
+        invoke,
+      ),
+    ).rejects.toThrow('发布需要绑定本地项目');
+    expect(invoke).not.toHaveBeenCalled();
+  });
 });
diff --git a/apps/ai-game-creator-shell/tests/gameDistributionPublishLive.test.ts b/apps/ai-game-creator-shell/tests/gameDistributionPublishLive.test.ts
index 8fa36e44c..b39ad667c 100644
--- a/apps/ai-game-creator-shell/tests/gameDistributionPublishLive.test.ts
+++ b/apps/ai-game-creator-shell/tests/gameDistributionPublishLive.test.ts
@@ -674,7 +674,7 @@ liveTest(
     expect(second.gameId).toBe(first.gameId);
     expect(second.versionNumber).toBe(first.versionNumber + 1);
 
-    // 更新发布：AGC 带原 gameId + 用户目标版本号，跳过 create game，只新增版本。
+    // 更新发布：AGC 带原 gameId + 用户项目版本，跳过 create game，只新增版本。
     const ownerDetail = await unwrap<{
       game: { publicationRevision: number };
     }>(
@@ -697,6 +697,50 @@ liveTest(
     expect(updated.gameId).toBe(second.gameId);
     expect(updated.versionNumber).toBe(targetVersionNumber);
 
+    // 同一个项目版本重复提交：服务端必须生成新的 versionId，而不是覆盖上一个提交实例。
+    const afterUpdate = await unwrap<{
+      game: { publicationRevision: number };
+    }>(
+      await realFetch(apiUrl(`/api/game-distribution/my-games/${second.gameId}`), {
+        headers: { Authorization: `Bearer ${token}`, ...ENVELOPE_HEADERS },
+      }),
+    );
+    const repeated = await publishLocalProjectGame({
+      invoke,
+      projectPath: '/data/dsk/Genarrative/tmp-agc-live-project',
+      packageRelativePath: 'dist/game.zip',
+      manifest,
+      metadata: { ...metadata, inputModes: [...metadata.inputModes] },
+      gameId: second.gameId,
+      versionNumber: targetVersionNumber,
+      expectedPublicationRevision: afterUpdate.game.publicationRevision,
+    });
+    expect(repeated.gameId).toBe(second.gameId);
+    expect(repeated.versionNumber).toBe(targetVersionNumber);
+    expect(repeated.versionId).not.toBe(updated.versionId);
+
+    // 回退：项目版本可以低于线上最大版本号，服务端只校验它是正整数。
+    const afterRepeat = await unwrap<{
+      game: { publicationRevision: number };
+    }>(
+      await realFetch(apiUrl(`/api/game-distribution/my-games/${second.gameId}`), {
+        headers: { Authorization: `Bearer ${token}`, ...ENVELOPE_HEADERS },
+      }),
+    );
+    const reverted = await publishLocalProjectGame({
+      invoke,
+      projectPath: '/data/dsk/Genarrative/tmp-agc-live-project',
+      packageRelativePath: 'dist/game.zip',
+      manifest,
+      metadata: { ...metadata, inputModes: [...metadata.inputModes] },
+      gameId: second.gameId,
+      versionNumber: 2,
+      expectedPublicationRevision: afterRepeat.game.publicationRevision,
+    });
+    expect(reverted.gameId).toBe(second.gameId);
+    expect(reverted.versionNumber).toBe(2);
+    expect(reverted.versionId).not.toBe(repeated.versionId);
+
     const myGames = await unwrap<{
       games: Array<{
         id: string;
@@ -708,9 +752,12 @@ liveTest(
       }),
     );
     const published = myGames.games.find((game) => game.id === first.gameId);
-    expect(published?.latestVersion?.versionId).toBe(updated.versionId);
+    // 「最新提交」按版本号降序取第一条：v7 有两条提交实例，回退的 v2 不会顶掉它们。
+    expect([updated.versionId, repeated.versionId]).toContain(
+      published?.latestVersion?.versionId,
+    );
     expect(published?.latestVersion?.status).toBe('pending_review');
-    // 更新只增加版本，不重复创建作品：该 localProjectId 在作者名下仍然只有一款游戏。
+    // 重复提交同一版本、回退到更小版本都只增加版本，不重复创建作品。
     expect(
       myGames.games.filter(
         (game) => game.id === first.gameId || game.id === updated.gameId,
diff --git a/apps/ai-game-creator-shell/tests/gameDistributionPublishPanel.test.tsx b/apps/ai-game-creator-shell/tests/gameDistributionPublishPanel.test.tsx
index 19f0f046b..853832017 100644
--- a/apps/ai-game-creator-shell/tests/gameDistributionPublishPanel.test.tsx
+++ b/apps/ai-game-creator-shell/tests/gameDistributionPublishPanel.test.tsx
@@ -25,6 +25,7 @@ import {
   publishLocalProjectGame,
   readGameCoverGenerationPrice,
   readGameDistributionPublication,
+  saveGameDistributionProjectVersion,
   suggestGameDistributionPublishMetadata,
 } from '../src/services/gameDistributionPublish';
 import { GAME_PACKAGE_UPLOAD_PROGRESS_EVENT } from '../src/services/gamePackageUploadProgress';
@@ -43,6 +44,7 @@ vi.mock('../src/services/gameDistributionPublish', async (importOriginal) => {
     publishLocalProjectGame: vi.fn(),
     readGameCoverGenerationPrice: vi.fn(),
     readGameDistributionPublication: vi.fn(),
+    saveGameDistributionProjectVersion: vi.fn(),
     suggestGameDistributionPublishMetadata: vi.fn(),
   };
 });
@@ -145,6 +147,7 @@ afterEach(() => {
   vi.mocked(publishLocalProjectGame).mockReset();
   vi.mocked(readGameCoverGenerationPrice).mockReset();
   vi.mocked(readGameDistributionPublication).mockReset();
+  vi.mocked(saveGameDistributionProjectVersion).mockReset();
   vi.mocked(suggestGameDistributionPublishMetadata).mockReset();
   vi.mocked(uploadPlatformMediaAsset).mockReset();
   delete (window as unknown as { __TAURI__?: unknown }).__TAURI__;
@@ -335,7 +338,7 @@ describe('GameDistributionPublishPanel', () => {
     expect(invoke).toBeDefined();
 
     expect(await screen.findByText('已提交审核')).not.toBeNull();
-    expect(screen.getByText(/版本 1/u)).not.toBeNull();
+    expect(screen.getByText(/项目版本/u)).not.toBeNull();
     expect(onPublished).toHaveBeenCalledTimes(1);
   });
 
@@ -682,7 +685,7 @@ describe('GameDistributionPublishPanel', () => {
     expect(screen.queryByLabelText('发行包摘要')).toBeNull();
   });
 
-  test('已有绑定时进入更新模式，回填线上资料并提交原 gameId 与更高版本号', async () => {
+  test('已有绑定时进入更新模式，回填线上资料并按项目版本提交原 gameId', async () => {
     installTauriInvoke(async () => undefined);
     vi.mocked(readGameDistributionPublication).mockResolvedValue({
       state: 'update',
@@ -721,7 +724,7 @@ describe('GameDistributionPublishPanel', () => {
     vi.mocked(publishLocalProjectGame).mockResolvedValue({
       gameId: 'game_9',
       versionId: 'gamever_3',
-      versionNumber: 3,
+      versionNumber: 2,
       status: 'pending_review',
       packageSha256: 'a'.repeat(64),
       packageSizeBytes: 3,
@@ -729,7 +732,7 @@ describe('GameDistributionPublishPanel', () => {
     });
     const { onPublished } = renderPanel();
 
-    // 回填线上冻结资料，目标版本默认「最大版本号 + 1」。
+    // 回填线上冻结资料；项目版本按绑定回填成线上最近提交的版本标签（旧清单缺字段时用它）。
     await screen.findByRole('button', { name: '更新游戏' });
     expect(screen.getByLabelText('游戏名称')).toHaveProperty(
       'value',
@@ -739,9 +742,13 @@ describe('GameDistributionPublishPanel', () => {
       'value',
       '线上简介',
     );
-    expect(screen.getByLabelText('目标版本号')).toHaveProperty('value', '3');
+    expect(screen.getByLabelText('项目版本')).toHaveProperty('value', '2');
+    expect(screen.getByText('v2')).not.toBeNull();
     expect(
-      screen.getByText(/当前最大版本号 2，建议 3/u),
+      screen.getByText(/线上最近提交 v2 · 审核中/u),
+    ).not.toBeNull();
+    expect(
+      screen.getByText(/版本标签不要求递增/u),
     ).not.toBeNull();
 
     fireEvent.click(screen.getByRole('button', { name: '更新游戏' }));
@@ -750,7 +757,8 @@ describe('GameDistributionPublishPanel', () => {
     );
     const args = vi.mocked(publishLocalProjectGame).mock.calls[0]?.[0];
     expect(args?.gameId).toBe('game_9');
-    expect(args?.versionNumber).toBe(3);
+    // 同一个版本标签可以重复提交：不做递增改写，提交的就是清单里的 projectVersion。
+    expect(args?.versionNumber).toBe(2);
     expect(args?.expectedPublicationRevision).toBe(7);
     // 冻结素材 ID 直接复用，不要求作者重新上传封面/截图。
     expect(args?.metadata?.coverAssetId).toBe('asset_cover_old');
@@ -767,7 +775,7 @@ describe('GameDistributionPublishPanel', () => {
     expect(onPublished).toHaveBeenCalledTimes(1);
   });
 
-  test('目标版本号不大于当前最大版本号时本地拦截且不发起发布', async () => {
+  test('清单里的项目版本优先于线上版本，回退到更小版本也能提交', async () => {
     installTauriInvoke(async () => undefined);
     vi.mocked(readGameDistributionPublication).mockResolvedValue({
       state: 'update',
@@ -784,18 +792,79 @@ describe('GameDistributionPublishPanel', () => {
       draft: null,
       visibility: 'published',
     });
-    renderPanel();
+    vi.mocked(publishLocalProjectGame).mockResolvedValue({
+      gameId: 'game_9',
+      versionId: 'gamever_6',
+      versionNumber: 2,
+      status: 'pending_review',
+      packageSha256: 'a'.repeat(64),
+      packageSizeBytes: 3,
+      fileCount: 2,
+    });
+    renderPanel({
+      manifest: {
+        ...MANIFEST,
+        projectVersion: 2,
+      } as unknown as GameCreationAppManifest,
+    });
     await screen.findByRole('button', { name: '更新游戏' });
 
-    fireEvent.change(screen.getByLabelText('目标版本号'), {
-      target: { value: '5' },
-    });
+    // 清单写过的项目版本胜出：不被线上最大版本号悄悄改成 5 或 6。
+    expect(screen.getByLabelText('项目版本')).toHaveProperty('value', '2');
+    await selectCover();
     fireEvent.click(screen.getByRole('button', { name: '更新游戏' }));
 
+    await waitFor(() =>
+      expect(publishLocalProjectGame).toHaveBeenCalledTimes(1),
+    );
     expect(
-      await screen.findByText(/目标版本号必须大于当前最大版本号 5/u),
+      vi.mocked(publishLocalProjectGame).mock.calls[0]?.[0].versionNumber,
+    ).toBe(2);
+  });
+
+  test('修改项目版本后失焦写回清单并回调工作台', async () => {
+    installTauriInvoke(async () => undefined);
+    const savedManifest = {
+      ...MANIFEST,
+      projectVersion: 4,
+    } as unknown as GameCreationAppManifest;
+    vi.mocked(saveGameDistributionProjectVersion).mockResolvedValue(
+      savedManifest,
+    );
+    const onManifestUpdated = vi.fn();
+    renderPanel({ onManifestUpdated });
+    await screen.findByLabelText('项目版本');
+
+    const input = screen.getByLabelText('项目版本');
+    fireEvent.change(input, { target: { value: '4' } });
+    expect(screen.getByText('v4')).not.toBeNull();
+    fireEvent.blur(input);
+
+    await waitFor(() =>
+      expect(saveGameDistributionProjectVersion).toHaveBeenCalledWith({
+        projectPath: '/tmp/authorized-game',
+        projectVersion: 4,
+      }),
+    );
+    expect(onManifestUpdated).toHaveBeenCalledWith(savedManifest);
+  });
+
+  test('项目版本非法时失焦回退到已保存值且不写盘', async () => {
+    installTauriInvoke(async () => undefined);
+    renderPanel();
+    const input = await screen.findByLabelText('项目版本');
+    expect(input).toHaveProperty('value', '1');
+
+    fireEvent.change(input, { target: { value: '0' } });
+    fireEvent.blur(input);
+
+    expect(
+      await screen.findByText('项目版本必须是大于 0 的整数'),
     ).not.toBeNull();
-    expect(publishLocalProjectGame).not.toHaveBeenCalled();
+    expect(saveGameDistributionProjectVersion).not.toHaveBeenCalled();
+    await waitFor(() => {
+      expect(screen.getByLabelText('项目版本')).toHaveProperty('value', '1');
+    });
   });
 
   test('恢复失败（网络/5xx）时禁用提交，不按首次发布继续', async () => {
diff --git a/packages/shared/src/contracts/gameCreationApp.ts b/packages/shared/src/contracts/gameCreationApp.ts
index a4525bad6..82ebdeb56 100644
--- a/packages/shared/src/contracts/gameCreationApp.ts
+++ b/packages/shared/src/contracts/gameCreationApp.ts
@@ -976,6 +976,42 @@ export interface GameCreationAppPublicationBinding {
   status?: string | null;
 }
 
+/** 项目版本标签的唯一合法形状：正整数，且能安全走 JSON number。 */
+export function isGameCreationAppProjectVersion(value: unknown): value is number {
+  return (
+    typeof value === 'number' &&
+    Number.isSafeInteger(value) &&
+    value > 0
+  );
+}
+
+/** 项目版本标签的建议默认值：没有任何线上记录时的首个版本。 */
+export const GAME_CREATION_APP_FIRST_PROJECT_VERSION = 1;
+
+/**
+ * 项目版本标签的有效值。
+ *
+ * 新清单直接用写下来的 `projectVersion`；旧清单缺这个字段时按发布绑定回填——线上已有版本号
+ * （`latestVersionNumber > 0`）就用它，否则用首版 1。
+ *
+ * `binding` 必须已经按**当前会话**（`accountId` + `apiBaseUrl`）与 `gameId` 隔离：调用方传
+ * 别的账号 / 别的环境的绑定，就会把该项目的版本标签回填成别人的线上版本号。原生回读与发布
+ * 写回都遵守这条隔离，渲染层只消费原生已经隔离过的绑定。
+ */
+export function resolveGameCreationAppProjectVersion(
+  manifest: Pick<GameCreationAppManifest, 'projectVersion'>,
+  binding?: GameCreationAppPublicationBinding | null,
+): number {
+  if (isGameCreationAppProjectVersion(manifest.projectVersion)) {
+    return manifest.projectVersion;
+  }
+  const latest = binding?.latestVersionNumber;
+  if (isGameCreationAppProjectVersion(latest)) {
+    return latest;
+  }
+  return GAME_CREATION_APP_FIRST_PROJECT_VERSION;
+}
+
 export interface GameCreationAppManifest {
   schemaVersion: string;
   projectId: string;
@@ -988,6 +1024,17 @@ export interface GameCreationAppManifest {
   versions?: GameIterationVersion[];
   godotProjectRoot?: string | null;
   cocosProjectRoot?: string | null;
+  /**
+   * 唯一用户发行版本标签（`项目版本 vN`），正整数，不需要递增。
+   *
+   * 同一个 `gameId` 的同一个版本标签可以反复提交：每次具体包/资料/审核提交由不可变
+   * `versionId` 区分，因此这里允许重复与回退（低于线上当前版本）。它**不是**内部编辑迭代
+   * `versions[].projectRevision`，也不是 semver 字符串。
+   *
+   * 旧清单没有这个字段：读取方按当前账号 / origin / gameId 隔离后的发布绑定回填（见
+   * `resolveGameCreationAppProjectVersion`），发布或改版本标签时由原生写回。
+   */
+  projectVersion?: number | null;
   /** 平台发布绑定；缺失即该项目尚未发布过。 */
   publication?: GameCreationAppPublicationBinding | null;
 }
diff --git a/packages/shared/src/contracts/gameDistribution.ts b/packages/shared/src/contracts/gameDistribution.ts
index d30259902..a8610cb0c 100644
--- a/packages/shared/src/contracts/gameDistribution.ts
+++ b/packages/shared/src/contracts/gameDistribution.ts
@@ -169,8 +169,11 @@ export type GameDistributionCreateGameRequest = {
 export type GameDistributionCreateVersionRequest = {
   localProjectId?: string | null;
   /**
-   * 显式目标版本号；缺省时服务端按该游戏已有最大版本号自动 +1。
-   * 必须严格大于当前最大版本号（允许跳号），否则返回 409。
+   * 用户可见的正整数版本标签（AGC 里就是 `projectVersion`）。
+   *
+   * 传入时只要求 `>= 1`：同一 `gameId` 的同一个版本号可以反复提交，每次提交生成新的
+   * `versionId`，允许重复标签与回退到更小的版本号，不与已有最大值比较。
+   * 缺省时保留旧客户端兼容行为：服务端按该游戏已有最大版本号 +1。
    */
   versionNumber?: number | null;
   packageSha256: string;
diff --git a/server-rs/crates/api-server/src/modules/game_distribution.rs b/server-rs/crates/api-server/src/modules/game_distribution.rs
index 6b1dbe3bf..4c7bc497b 100644
--- a/server-rs/crates/api-server/src/modules/game_distribution.rs
+++ b/server-rs/crates/api-server/src/modules/game_distribution.rs
@@ -881,7 +881,11 @@ fn release_package_asset_response(
     };
     let content = normalize_release_asset_references(content, content_type);
     let content = inject_release_storage_bootstrap(content, content_type);
-    Ok(release_asset_response_with_cache(content, content_type, cache_control))
+    Ok(release_asset_response_with_cache(
+        content,
+        content_type,
+        cache_control,
+    ))
 }
 
 fn normalize_release_asset_references(content: Vec<u8>, content_type: &str) -> Vec<u8> {
@@ -951,7 +955,6 @@ async fn release_package_bytes(
     Ok(bytes)
 }
 
-
 fn release_asset_response_with_cache(
     content: Vec<u8>,
     content_type: &'static str,
@@ -2929,7 +2932,6 @@ fn private_version_payload(version: &GameDistributionVersionRecord) -> Value {
     })
 }
 
-
 /// 游戏分发写入开关。
 ///
 /// 运营在灰度配置里把 `game-distribution:publish` 收紧后，作者写入与新版本激活会返回
@@ -4615,14 +4617,12 @@ mod tests {
         );
     }
 
-
     #[test]
     fn release_normalizes_legacy_root_asset_references() {
-        let source = br#"<script>fetch('/assets/hero.png')</script><style>url(/ui/icon.svg)</style>"#;
-        let normalized = normalize_release_asset_references(
-            source.to_vec(),
-            "text/javascript; charset=utf-8",
-        );
+        let source =
+            br#"<script>fetch('/assets/hero.png')</script><style>url(/ui/icon.svg)</style>"#;
+        let normalized =
+            normalize_release_asset_references(source.to_vec(), "text/javascript; charset=utf-8");
         let normalized = String::from_utf8(normalized).expect("normalized source");
         assert!(normalized.contains("fetch('assets/hero.png')"));
         assert!(normalized.contains("url(ui/icon.svg)"));
diff --git a/server-rs/crates/module-game-distribution/src/application.rs b/server-rs/crates/module-game-distribution/src/application.rs
index 6b958a911..2b868bb2f 100644
--- a/server-rs/crates/module-game-distribution/src/application.rs
+++ b/server-rs/crates/module-game-distribution/src/application.rs
@@ -7,7 +7,7 @@ use crate::{
     commands::{CreateGameInput, CreateVersionInput, IdempotencyRequest, ReviewDecision},
     domain::{
         GameDistributionAction, GameSnapshot, GameVersionSnapshot, GameVersionStatus,
-        GameVisibility, normalize_id,
+        GameVisibility, normalize_id, resolve_version_number,
     },
     errors::{GameDistributionError, GameDistributionFieldError},
 };
@@ -146,14 +146,16 @@ impl GameDistributionService {
         if state.versions.contains_key(&version_id) {
             return Err(GameDistributionError::VersionAlreadyExists);
         }
-        let version_number = state
-            .versions
-            .values()
-            .filter(|version| version.game_id == game_id)
-            .map(|version| version.version_number)
-            .max()
-            .unwrap_or(0)
-            .saturating_add(1);
+        let version_number = resolve_version_number(
+            state
+                .versions
+                .values()
+                .filter(|version| version.game_id == game_id)
+                .map(|version| version.version_number)
+                .max()
+                .unwrap_or(0),
+            input.version_number,
+        )?;
         let snapshot = GameVersionSnapshot {
             version_id: version_id.clone(),
             game_id,
@@ -880,6 +882,7 @@ mod tests {
                 game_id: "game-1".to_string(),
                 owner_user_id: "owner-1".to_string(),
                 version_id: "version-1".to_string(),
+                version_number: None,
                 package_sha256: "a".repeat(64),
                 package_bytes: 42,
                 idempotency: idem("create-version-1", "version-1"),
@@ -1159,6 +1162,7 @@ mod tests {
                 game_id: "game-1".to_string(),
                 owner_user_id: "owner-1".to_string(),
                 version_id: "version-2".to_string(),
+                version_number: None,
                 package_sha256: "b".repeat(64),
                 package_bytes: 7,
                 idempotency: idem("create-version-2", "version-2"),
@@ -1270,4 +1274,61 @@ mod tests {
         assert_eq!(snapshot.status, GameVersionStatus::Uploaded);
         assert_eq!(repeated.snapshot, snapshot);
     }
+
+    #[test]
+    fn explicit_version_number_accepts_repeats_and_reverts_of_the_same_label() {
+        assert_eq!(resolve_version_number(0, Some(1)).expect("首版显式 1"), 1);
+        // 重复标签：线上已有 3 也要能再提交一次 3，并生成新的版本记录。
+        assert_eq!(resolve_version_number(3, Some(3)).expect("重复标签"), 3);
+        // 回退：线上最大 5，也允许提交 2。
+        assert_eq!(resolve_version_number(5, Some(2)).expect("回退标签"), 2);
+        assert_eq!(
+            resolve_version_number(0, None).expect("旧客户端自动递增"),
+            1
+        );
+        assert_eq!(
+            resolve_version_number(7, None).expect("旧客户端按最大值递增"),
+            8
+        );
+    }
+
+    #[test]
+    fn version_number_must_be_positive_and_auto_increment_fails_closed() {
+        assert_eq!(
+            resolve_version_number(0, Some(0)).expect_err("0 不是合法标签"),
+            GameDistributionFieldError::InvalidVersionNumber
+        );
+        assert_eq!(
+            resolve_version_number(u64::MAX, None).expect_err("自动递增溢出必须失败关闭"),
+            GameDistributionFieldError::VersionNumberExhausted
+        );
+    }
+
+    #[test]
+    fn repeating_the_same_label_creates_a_new_version_record() {
+        let service = service();
+        let first = create_version(&service);
+        assert_eq!(first.version_number, 1);
+
+        // 同一个版本标签再提交一次：旧的已公开实例不原地修改，而是新增一条版本记录。
+        let repeated = service
+            .create_version(CreateVersionInput {
+                game_id: "game-1".to_string(),
+                owner_user_id: "owner-1".to_string(),
+                version_id: "version-1-again".to_string(),
+                version_number: Some(first.version_number),
+                package_sha256: "b".repeat(64),
+                package_bytes: 9,
+                idempotency: idem("create-version-again", "version-again"),
+                created_at_micros: 12,
+            })
+            .expect("同一个版本标签可以重复提交")
+            .snapshot;
+        assert_eq!(repeated.version_number, first.version_number);
+        assert_ne!(repeated.version_id, first.version_id);
+        assert_eq!(
+            service.get_version(&first.version_id).expect("旧版本仍在"),
+            first
+        );
+    }
 }
diff --git a/server-rs/crates/module-game-distribution/src/commands.rs b/server-rs/crates/module-game-distribution/src/commands.rs
index 0cd47fb43..b9460264b 100644
--- a/server-rs/crates/module-game-distribution/src/commands.rs
+++ b/server-rs/crates/module-game-distribution/src/commands.rs
@@ -34,6 +34,10 @@ pub struct CreateVersionInput {
     pub game_id: String,
     pub owner_user_id: String,
     pub version_id: String,
+    /// 用户可见的正整数版本标签；`None` 时按该游戏已有最大版本号 +1（旧客户端兼容）。
+    /// 传入时只要求 `>= 1`：同一 gameId 的同一标签可以反复提交，每次都是一条新版本记录。
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub version_number: Option<u64>,
     pub package_sha256: String,
     pub package_bytes: u64,
     pub idempotency: IdempotencyRequest,
diff --git a/server-rs/crates/module-game-distribution/src/domain.rs b/server-rs/crates/module-game-distribution/src/domain.rs
index 4607a2013..e8d625a1d 100644
--- a/server-rs/crates/module-game-distribution/src/domain.rs
+++ b/server-rs/crates/module-game-distribution/src/domain.rs
@@ -1,6 +1,7 @@
 use serde::{Deserialize, Serialize};
 use sha2::{Digest, Sha256};
 
+use crate::errors::GameDistributionFieldError;
 use shared_kernel::{build_prefixed_seed_id, normalize_required_string};
 
 pub const GAME_ID_PREFIX: &str = "game_";
@@ -17,6 +18,25 @@ pub fn generate_game_version_id(seed_micros: i64, version_number: u64) -> String
     )
 }
 
+/// 解析本次创建的版本号（用户可见的版本标签，不是不可变的 `version_id`）。
+///
+/// - `None`：旧客户端兼容路径，取该游戏已有最大版本号 +1；溢出时失败关闭，不回绕成 0。
+/// - `Some(requested)`：只要求正整数。同一个 gameId 的同一个版本号可以反复提交——每次提交都是
+///   一条新的版本记录（新的 `version_id`），旧公开实例不原地修改——所以**不与已有最大值比较**，
+///   允许重复标签，也允许回退到更小的标签。
+pub fn resolve_version_number(
+    max_existing: u64,
+    requested: Option<u64>,
+) -> Result<u64, GameDistributionFieldError> {
+    match requested {
+        Some(0) => Err(GameDistributionFieldError::InvalidVersionNumber),
+        Some(requested) => Ok(requested),
+        None => max_existing
+            .checked_add(1)
+            .ok_or(GameDistributionFieldError::VersionNumberExhausted),
+    }
+}
+
 /// Computes the lowercase SHA-256 digest used by the idempotency contract.
 pub fn compute_request_digest(payload: impl AsRef<[u8]>) -> String {
     let digest = Sha256::digest(payload.as_ref());
diff --git a/server-rs/crates/module-game-distribution/src/errors.rs b/server-rs/crates/module-game-distribution/src/errors.rs
index e3cb17a65..2228183c3 100644
--- a/server-rs/crates/module-game-distribution/src/errors.rs
+++ b/server-rs/crates/module-game-distribution/src/errors.rs
@@ -13,6 +13,8 @@ pub enum GameDistributionFieldError {
     InvalidPackageDigest,
     InvalidPackageBytes,
     MissingReviewReason,
+    InvalidVersionNumber,
+    VersionNumberExhausted,
 }
 
 impl fmt::Display for GameDistributionFieldError {
@@ -27,6 +29,8 @@ impl fmt::Display for GameDistributionFieldError {
             Self::InvalidPackageDigest => "packageSha256 必须是 64 位十六进制摘要",
             Self::InvalidPackageBytes => "packageBytes 必须大于 0",
             Self::MissingReviewReason => "拒绝审核必须提供理由",
+            Self::InvalidVersionNumber => "版本号必须是大于 0 的整数",
+            Self::VersionNumberExhausted => "版本号已达上限，无法自动递增",
         };
         formatter.write_str(message)
     }
diff --git a/server-rs/crates/module-game-distribution/src/lib.rs b/server-rs/crates/module-game-distribution/src/lib.rs
index 2fb820d17..0da10868a 100644
--- a/server-rs/crates/module-game-distribution/src/lib.rs
+++ b/server-rs/crates/module-game-distribution/src/lib.rs
@@ -21,7 +21,7 @@ pub use application::{
 pub use commands::{CreateGameInput, CreateVersionInput, IdempotencyRequest, ReviewDecision};
 pub use domain::{
     GameDistributionAction, GameSnapshot, GameVersionSnapshot, GameVersionStatus, GameVisibility,
-    compute_request_digest, generate_game_id, generate_game_version_id,
+    compute_request_digest, generate_game_id, generate_game_version_id, resolve_version_number,
 };
 pub use errors::{GameDistributionError, GameDistributionFieldError};
 pub use events::GameDistributionEvent;
diff --git a/server-rs/crates/shared-contracts/src/game_creation_app.rs b/server-rs/crates/shared-contracts/src/game_creation_app.rs
index d11c615ac..c9dd96106 100644
--- a/server-rs/crates/shared-contracts/src/game_creation_app.rs
+++ b/server-rs/crates/shared-contracts/src/game_creation_app.rs
@@ -1087,6 +1087,36 @@ pub struct GameCreationAppPublicationBinding {
     pub status: Option<String>,
 }
 
+/// 项目版本标签的建议默认值：没有任何线上记录时的首个版本。
+pub const GAME_CREATION_APP_FIRST_PROJECT_VERSION: u64 = 1;
+
+/// 项目版本标签的唯一合法形状：正整数（`0` 永远是非法标签，不表示"未设置"）。
+pub fn is_game_creation_app_project_version(value: u64) -> bool {
+    value > 0
+}
+
+/// 项目版本标签的有效值。
+///
+/// 新清单直接用写下来的 `project_version`；旧清单缺这个字段时按发布绑定回填——线上已有版本号
+/// （`latest_version_number > 0`）就用它，否则用首版 `1`。`0` 与缺失同义（历史上没有任何写入口
+/// 会落 0），所以两者都走回填分支。
+///
+/// `binding` 必须已经按**当前会话**（`account_id` + `api_base_url`）与 `game_id` 隔离：传别的
+/// 账号 / 别的环境的绑定，就会把该项目的版本标签回填成别人的线上版本号。原生回读与发布写回都
+/// 遵守这条隔离。
+pub fn resolve_game_creation_app_project_version(
+    project_version: Option<u64>,
+    binding: Option<&GameCreationAppPublicationBinding>,
+) -> u64 {
+    if let Some(project_version) = project_version.filter(|value| *value > 0) {
+        return project_version;
+    }
+    binding
+        .and_then(|binding| binding.latest_version_number)
+        .filter(|value| *value > 0)
+        .unwrap_or(GAME_CREATION_APP_FIRST_PROJECT_VERSION)
+}
+
 #[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
 #[serde(deny_unknown_fields, rename_all = "camelCase")]
 pub struct GameCreationAppManifest {
@@ -1108,6 +1138,16 @@ pub struct GameCreationAppManifest {
     pub godot_project_root: Option<String>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub cocos_project_root: Option<String>,
+    /// 唯一用户发行版本标签（`项目版本 vN`），正整数，不需要递增。
+    ///
+    /// 同一个 gameId 的同一个版本标签可以反复提交：每次具体包/资料/审核提交由不可变
+    /// `versionId` 区分，所以这里允许重复与回退（低于线上当前版本）。它不是内部编辑迭代
+    /// `versions[].project_revision`，也不是 semver 字符串。
+    ///
+    /// 旧清单没有这个字段：读取方用 [`resolve_game_creation_app_project_version`] 按当前会话
+    /// 隔离后的发布绑定回填，发布或改版本标签时由原生写回。
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub project_version: Option<u64>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub publication: Option<GameCreationAppPublicationBinding>,
 }
@@ -1243,6 +1283,7 @@ pub fn new_game_creation_app_manifest(
         command_runs: Vec::new(),
         versions: Vec::new(),
         godot_project_root: None,
+        project_version: None,
         publication: None,
         cocos_project_root: None,
     }
@@ -2182,6 +2223,67 @@ mod tests {
         assert_eq!(payload["godotProjectRoot"], json!("game-source"));
     }
 
+    /// 项目版本标签是清单里唯一的用户发行版本：线上线同一字段名（`projectVersion`），
+    /// 缺省时按已隔离的发布绑定回填，且绝不落 0。
+    #[test]
+    fn manifest_project_version_round_trips_and_backfills_from_binding() {
+        let manifest = new_game_creation_app_manifest("project-1", "像素动作原型");
+        let payload = serde_json::to_value(&manifest).expect("manifest should serialize");
+        assert!(
+            payload.get("projectVersion").is_none(),
+            "旧清单语义：没有版本标签时不写字段，由发布/回读回填"
+        );
+        assert_eq!(
+            resolve_game_creation_app_project_version(manifest.project_version, None),
+            GAME_CREATION_APP_FIRST_PROJECT_VERSION
+        );
+
+        let mut published = manifest.clone();
+        published.project_version = Some(4);
+        published.publication = Some(GameCreationAppPublicationBinding {
+            account_id: "user-1".to_string(),
+            api_base_url: "https://dev.test".to_string(),
+            game_id: "game-1".to_string(),
+            revision: 3,
+            latest_version_id: Some("gamever-1".to_string()),
+            latest_version_number: Some(4),
+            status: Some("pending_review".to_string()),
+        });
+        let payload = serde_json::to_value(&published).expect("published manifest serializes");
+        assert_eq!(payload["projectVersion"], json!(4));
+        assert_eq!(payload["publication"]["latestVersionNumber"], json!(4));
+        assert_eq!(
+            serde_json::from_value::<GameCreationAppManifest>(payload)
+                .expect("project version must round-trip")
+                .project_version,
+            Some(4)
+        );
+
+        // 缺失或 0（不是合法标签）都走回填：线上有版本号就用它，否则首版 1。
+        assert_eq!(
+            resolve_game_creation_app_project_version(None, published.publication.as_ref()),
+            4
+        );
+        assert_eq!(
+            resolve_game_creation_app_project_version(Some(0), published.publication.as_ref()),
+            4
+        );
+        let mut without_latest = published.publication.clone();
+        without_latest
+            .as_mut()
+            .expect("binding")
+            .latest_version_number = Some(0);
+        assert_eq!(
+            resolve_game_creation_app_project_version(None, without_latest.as_ref()),
+            GAME_CREATION_APP_FIRST_PROJECT_VERSION
+        );
+        // 清单里写过的值胜出：重开项目不能被线上版本号悄悄改写。
+        assert_eq!(
+            resolve_game_creation_app_project_version(Some(2), published.publication.as_ref()),
+            2
+        );
+    }
+
     /// 未知顶层字段必须失败关闭。这条契约级断言钉住的是本结构体本身的取向，而不是某个调用方：
     /// AGC 客户端读写 manifest 的方式是「整结构体反序列化 + 整结构体重新序列化覆盖落盘」，
     /// 一旦放行未知顶层字段，「读一次 + 任意一次写」就会静默抹掉未来版本新增的字段。
diff --git a/server-rs/crates/shared-contracts/src/game_distribution.rs b/server-rs/crates/shared-contracts/src/game_distribution.rs
index 289bf8ab9..dc3da2e9d 100644
--- a/server-rs/crates/shared-contracts/src/game_distribution.rs
+++ b/server-rs/crates/shared-contracts/src/game_distribution.rs
@@ -14,10 +14,12 @@ pub const GAME_DISTRIBUTION_CATEGORIES: [&str; 7] =
 /// 客户端要么放行服务端必拒的包（白等一次上传），要么拦掉服务端能收的包。
 pub const GAME_DISTRIBUTION_MAX_PACKAGE_BYTES: u64 = 200 * 1024 * 1024;
 
-/// 显式版本号与既有版本冲突时的统一错误前缀。
+/// 版本号无法分配时的统一错误前缀（只在自动递增溢出时使用）。
 ///
-/// SpacetimeDB 创建版本事务在 max 校验失败、或自动递增溢出时返回带此前缀的错误；
-/// api-server 据此映射成 HTTP 409，让客户端区分"版本号必须严格更大"与参数格式错误。
+/// 旧的「必须严格大于当前最大版本号」限制已经取消：同一 gameId 的同一个版本号可以反复提交，
+/// 每次生成新的 versionId，也允许回退到更小的标签。显式版本号只要求 `>= 1`，`0` 这类非法值
+/// 走普通 400；只有旧客户端缺省时按最大版本号自动递增、撞上 `u64::MAX` 才会带上此前缀，
+/// api-server 据此映射成 HTTP 409。
 pub const GAME_DISTRIBUTION_VERSION_NUMBER_CONFLICT: &str = "VERSION_NUMBER_CONFLICT";
 
 /// 发布页免费生成简介与分类的输入。
@@ -230,10 +232,11 @@ pub struct GameDistributionCreateGameRequest {
 pub struct GameDistributionCreateVersionRequest {
     #[serde(default)]
     pub local_project_id: Option<String>,
-    /// 显式目标版本号；缺省时服务端按该游戏已有最大版本号自动 +1。
+    /// 用户可见的正整数版本标签（AGC 里就是 `projectVersion`）。
     ///
-    /// 传入值必须严格大于该游戏已有最大版本号，允许跳号但不允许覆盖、重用或回退；
-    /// 冲突时服务端返回 409（`GAME_DISTRIBUTION_VERSION_NUMBER_CONFLICT`）。
+    /// 传入时只要求 `>= 1`：同一 gameId 的同一个版本号可以反复提交，每次提交生成新的
+    /// versionId，允许重复标签与回退到更小的版本号，不与已有最大值比较。缺省时保留旧客户端
+    /// 兼容行为：服务端按该游戏已有最大版本号 +1（此时溢出才会返回 409）。
     /// 缺省时序列化省略该字段，保证旧客户端请求的幂等摘要与升级前一致。
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub version_number: Option<u64>,
diff --git a/server-rs/crates/spacetime-client/src/game_distribution.rs b/server-rs/crates/spacetime-client/src/game_distribution.rs
index 2a46f27fb..d4a279d6f 100644
--- a/server-rs/crates/spacetime-client/src/game_distribution.rs
+++ b/server-rs/crates/spacetime-client/src/game_distribution.rs
@@ -88,7 +88,8 @@ pub struct GameDistributionCreateVersionRecordInput {
     pub game_id: String,
     pub owner_user_id: String,
     pub version_id: String,
-    /// 显式目标版本号；`None` 时由服务端按已有最大版本号自动 +1。
+    /// 用户可见的正整数版本标签；`None` 时由服务端按已有最大版本号自动 +1（旧客户端兼容）。
+    /// 传入时只要求 `>= 1`：同一 gameId 的同一标签可以反复提交，每次生成新的 version_id。
     pub version_number: Option<u64>,
     /// api-server 校验并解析素材后生成的资料快照 JSON。
     pub metadata_json: String,
diff --git a/server-rs/crates/spacetime-module/src/game_distribution.rs b/server-rs/crates/spacetime-module/src/game_distribution.rs
index 9dffd2367..a243c841e 100644
--- a/server-rs/crates/spacetime-module/src/game_distribution.rs
+++ b/server-rs/crates/spacetime-module/src/game_distribution.rs
@@ -933,7 +933,9 @@ pub struct GameDistributionCreateVersionInput {
     pub game_id: String,
     pub owner_user_id: String,
     pub version_id: String,
-    /// 显式目标版本号；`None` 时由事务按该游戏最大版本号自动 +1（旧客户端兼容）。
+    /// 用户可见的正整数版本标签；`None` 时由事务按该游戏最大版本号自动 +1（旧客户端兼容）。
+    /// 传入时只要求 `>= 1`：同一 gameId 的同一标签可以反复提交（每次生成新的 version_id），
+    /// 允许重复标签与回退，因此不再与已有最大值比较。
     pub version_number: Option<u64>,
     /// 由 api-server 校验并解析素材后生成的资料快照 JSON。
     pub metadata_json: String,
@@ -1890,30 +1892,27 @@ fn create_game_distribution_game_tx(
     Ok((game_distribution_game_snapshot(&game), false))
 }
 
-/// 解析本次创建的版本号。
+/// 解析本次创建的版本号（用户可见版本标签；具体提交实例由 `version_id` 区分）。
 ///
-/// - `None`：旧客户端兼容路径，取该游戏已有最大版本号 +1；溢出时失败关闭。
-/// - `Some(requested)`：必须严格大于已有最大版本号，允许跳号，但不允许覆盖或重用
-///   （`requested == 0` 在 `max_existing >= 0` 时必然落进拒绝分支）。
-///
-/// 事务串行化保证并发创建看到的是前一个事务提交后的 `max_existing`：两个并发请求传入
-/// 同一个显式版本号时，后执行的事务会读到已被占用的最大值并被这里拒绝。
+/// 规则本体在 `module-game-distribution` 的 `resolve_version_number`，这里只把领域错误映射成
+/// 传输层错误字符串：
+/// - `None`：旧客户端兼容路径，取该游戏已有最大版本号 +1；溢出时失败关闭并带上冲突前缀。
+/// - `Some(requested)`：只要求正整数。同一个 gameId 的同一个版本号可以反复提交（每次生成新的
+///   `version_id`，旧公开实例不原地修改），所以**不再与已有最大值比较**，允许重复标签与回退。
+/// - `Some(0)` / 非法值：普通参数错误（不带冲突前缀，api-server 映射成 400）。
 fn resolve_game_distribution_version_number(
     max_existing: u64,
     requested: Option<u64>,
 ) -> Result<u64, String> {
-    match requested {
-        Some(requested) if requested > max_existing => Ok(requested),
-        Some(requested) => Err(format!(
-            "{}: 版本号 {requested} 必须严格大于当前最大版本号 {max_existing}",
-            shared_contracts::game_distribution::GAME_DISTRIBUTION_VERSION_NUMBER_CONFLICT
-        )),
-        None => max_existing.checked_add(1).ok_or_else(|| {
-            format!(
+    match module_game_distribution::resolve_version_number(max_existing, requested) {
+        Ok(version_number) => Ok(version_number),
+        Err(module_game_distribution::GameDistributionFieldError::VersionNumberExhausted) => {
+            Err(format!(
                 "{}: 版本号已达上限 {max_existing}，无法自动递增",
                 shared_contracts::game_distribution::GAME_DISTRIBUTION_VERSION_NUMBER_CONFLICT
-            )
-        }),
+            ))
+        }
+        Err(error) => Err(error.to_string()),
     }
 }
 
@@ -3804,9 +3803,9 @@ mod tests {
     }
 
     #[test]
-    fn explicit_version_number_must_exceed_current_max() {
+    fn explicit_version_number_only_requires_a_positive_integer() {
         assert_eq!(
-            resolve_game_distribution_version_number(2, Some(3)).expect("严格更大应接受"),
+            resolve_game_distribution_version_number(2, Some(3)).expect("更大版本号应接受"),
             3
         );
         // 允许跳号：显式值可以从 0 直接跳到 5。
@@ -3814,10 +3813,15 @@ mod tests {
             resolve_game_distribution_version_number(0, Some(5)).expect("跳号应接受"),
             5
         );
-        // 先发布 3、再发布 5：第二个显式值仍严格大于新的最大值。
+        // 重复提交同一个版本标签：线上已有 3 也能再提交一次 3，生成新的 version_id。
         assert_eq!(
-            resolve_game_distribution_version_number(3, Some(5)).expect("递增跳号应接受"),
-            5
+            resolve_game_distribution_version_number(3, Some(3)).expect("重复标签应接受"),
+            3
+        );
+        // 回退：线上最大 5，也允许把项目版本改回 2。
+        assert_eq!(
+            resolve_game_distribution_version_number(5, Some(2)).expect("回退标签应接受"),
+            2
         );
         assert_eq!(
             resolve_game_distribution_version_number(u64::MAX - 1, Some(u64::MAX))
@@ -3827,34 +3831,12 @@ mod tests {
     }
 
     #[test]
-    fn explicit_version_number_at_or_below_max_is_rejected_as_conflict() {
-        // 0 严格不大于任何已有最大值（含空集时的 0），必须拒绝，不能落成版本号 0。
+    fn version_number_zero_is_rejected_as_a_plain_bad_request() {
+        // 0 不是合法的版本标签；这类参数错误不带冲突前缀，api-server 映射成 400 而不是 409。
         let zero =
             resolve_game_distribution_version_number(0, Some(0)).expect_err("版本号 0 应被拒绝");
-        assert!(conflict(&zero), "应带冲突前缀：{zero}");
-
-        let equal =
-            resolve_game_distribution_version_number(4, Some(4)).expect_err("相同版本号应被拒绝");
-        assert!(conflict(&equal), "应带冲突前缀：{equal}");
-
-        let lower =
-            resolve_game_distribution_version_number(4, Some(2)).expect_err("更小版本号应被拒绝");
-        assert!(conflict(&lower), "应带冲突前缀：{lower}");
-
-        let max_taken = resolve_game_distribution_version_number(u64::MAX, Some(u64::MAX))
-            .expect_err("已被占用的最大值应被拒绝");
-        assert!(conflict(&max_taken), "应带冲突前缀：{max_taken}");
-    }
-
-    #[test]
-    fn concurrent_same_explicit_version_number_is_rejected_for_the_later_transaction() {
-        // 两个并发事务都传 5、当前最大值为 4：先提交的事务写入 5，后执行的事务重新读到
-        // max=5 后必须拒绝，而不是覆盖已存在的版本。
-        let first = resolve_game_distribution_version_number(4, Some(5)).expect("首个请求应成功");
-        assert_eq!(first, 5);
-        let second = resolve_game_distribution_version_number(first, Some(5))
-            .expect_err("第二个同名版本号应被拒绝");
-        assert!(conflict(&second), "应带冲突前缀：{second}");
+        assert!(!conflict(&zero), "参数错误不应带冲突前缀：{zero}");
+        assert!(zero.contains("大于 0"), "应说明合法形状：{zero}");
     }
 
     #[test]