diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
index 1dfe8d837..45e2a6392 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
@@ -1142,7 +1142,9 @@ pub(crate) fn set_design_agent_runtime_mode(
         "design.runtime-mode",
     )?;
     if active_runtime.trim() == "game" {
-        crate::assets::register_design_artifacts_at(root)?;
+        if crate::assets::register_design_artifacts_at(root)? {
+            advance_agent_runtime_project_revision_locked(root)?;
+        }
     }
     write_design_runtime_mode(root, active_runtime.trim())
 }
@@ -1378,6 +1380,38 @@ mod tests {
         let error = ensure_design_runtime_active(root).expect_err("game mode must reject design");
         assert!(error.contains("游戏运行态"));
     }
+
+    #[test]
+    fn switching_to_game_pairs_design_artifact_registration_with_revision() {
+        let temporary = tempfile::tempdir().expect("create runtime mode root");
+        let root = temporary.path();
+        crate::project::init_local_game_project_at(root, "design-switch-test", "策划切换")
+            .expect("init project");
+        fs::create_dir_all(root.join("design_artifacts/project")).expect("create artifacts");
+        fs::write(root.join("design_artifacts/project/design.md"), "设计内容")
+            .expect("write artifact");
+
+        let before = read_game_creator_agent_runtime_project_revision(root)
+            .expect("read initial revision")
+            .revision;
+        assert_eq!(
+            set_design_agent_runtime_mode(root.to_string_lossy().into_owned(), "game".to_string(),)
+                .expect("switch to game")
+                .active_runtime,
+            "game"
+        );
+        let after = read_game_creator_agent_runtime_project_revision(root)
+            .expect("read committed revision")
+            .revision;
+        assert_eq!(after, before + 1);
+
+        set_design_agent_runtime_mode(root.to_string_lossy().into_owned(), "game".to_string())
+            .expect("repeat switch to game");
+        let repeated = read_game_creator_agent_runtime_project_revision(root)
+            .expect("read repeated revision")
+            .revision;
+        assert_eq!(repeated, after);
+    }
     use serde_json::json;
     use std::fs;
 
diff --git a/apps/ai-game-creator-shell/src-tauri/src/assets.rs b/apps/ai-game-creator-shell/src-tauri/src/assets.rs
index c4382bcef..110e35161 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/assets.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/assets.rs
@@ -604,10 +604,10 @@ pub(crate) fn register_local_asset_at(
     register_local_asset_entry(root, local_path, kind, media_type, id_prefix, source)
 }
 
-pub(crate) fn register_design_artifacts_at(root: &Path) -> Result<usize, String> {
+pub(crate) fn register_design_artifacts_at(root: &Path) -> Result<bool, String> {
     let design_root = root.join("design_artifacts");
     if !design_root.exists() {
-        return Ok(0);
+        return Ok(false);
     }
     let mut files = Vec::new();
     let mut directories = vec![design_root];
@@ -630,7 +630,7 @@ pub(crate) fn register_design_artifacts_at(root: &Path) -> Result<usize, String>
         }
     }
     files.sort();
-    let mut registered = 0;
+    let mut changed = false;
     for path in files {
         let relative = path
             .strip_prefix(root)
@@ -644,7 +644,7 @@ pub(crate) fn register_design_artifacts_at(root: &Path) -> Result<usize, String>
             Some("yaml" | "yml") => "text/yaml",
             _ => "application/octet-stream",
         };
-        register_local_asset_at(
+        let (_, asset_changed) = register_local_asset_entry_with_change(
             root,
             &relative,
             "document",
@@ -663,9 +663,9 @@ pub(crate) fn register_design_artifacts_at(root: &Path) -> Result<usize, String>
                 reference_resource_ids: Vec::new(),
             },
         )?;
-        registered += 1;
+        changed |= asset_changed;
     }
-    Ok(registered)
+    Ok(changed)
 }
 
 pub(crate) fn import_canvas_asset_at(
@@ -1876,6 +1876,18 @@ pub(crate) fn register_local_asset_entry(
     id_prefix: &str,
     source: GameCreationAppAssetSource,
 ) -> Result<UploadLocalAssetResult, String> {
+    register_local_asset_entry_with_change(root, local_path, kind, media_type, id_prefix, source)
+        .map(|(result, _)| result)
+}
+
+fn register_local_asset_entry_with_change(
+    root: &Path,
+    local_path: &str,
+    kind: &str,
+    media_type: &str,
+    id_prefix: &str,
+    source: GameCreationAppAssetSource,
+) -> Result<(UploadLocalAssetResult, bool), String> {
     let normalized_path = normalize_relative_path(local_path)?;
     let absolute_path = resolve_local_project_path(root, &normalized_path)?;
     let manifest_path = root.join(".agent/manifest.json");
@@ -1888,7 +1900,7 @@ pub(crate) fn register_local_asset_entry(
     let mut source_for_record = source.clone();
     source_for_record.prompt = None;
 
-    let (id, record_type) = mutate_manifest_at(root, |manifest| {
+    let (id, record_type, changed) = mutate_manifest_at(root, |manifest| {
         if let Some(existing) = manifest
             .assets
             .iter_mut()
@@ -1898,13 +1910,16 @@ pub(crate) fn register_local_asset_entry(
             // 而陈旧的非 unclassified 值会被读侧无条件信任（自愈只在落盘值是 unclassified
             // 时才触发），于是这个资产永远停在错误栏目。
             // kind 没变时刻意不动 category——落盘分类是权威值，同 kind 重登记不得抹掉它。
+            let changed = existing.kind != kind
+                || existing.media_type != media_type
+                || existing.source != source;
             if existing.kind != kind {
                 existing.kind = kind.to_string();
                 existing.category = game_creation_app_asset_category_for_kind(kind);
             }
             existing.media_type = media_type.to_string();
             existing.source = source;
-            Ok((existing.id.clone(), "asset.update"))
+            Ok((existing.id.clone(), "asset.update", changed))
         } else {
             let id = format!(
                 "{id_prefix}-{}-{}",
@@ -1922,7 +1937,7 @@ pub(crate) fn register_local_asset_entry(
                 tags: Vec::new(),
                 source,
             });
-            Ok((id, "asset.register"))
+            Ok((id, "asset.register", true))
         }
     })?;
     append_agent_db_record(
@@ -1937,12 +1952,15 @@ pub(crate) fn register_local_asset_entry(
         }),
     )?;
 
-    Ok(UploadLocalAssetResult {
-        id,
-        local_path: normalized_path.clone(),
-        absolute_path: absolute_path.to_string_lossy().into_owned(),
-        manifest_path: manifest_path.to_string_lossy().into_owned(),
-    })
+    Ok((
+        UploadLocalAssetResult {
+            id,
+            local_path: normalized_path.clone(),
+            absolute_path: absolute_path.to_string_lossy().into_owned(),
+            manifest_path: manifest_path.to_string_lossy().into_owned(),
+        },
+        changed,
+    ))
 }
 
 #[derive(Clone, Debug, Deserialize)]
@@ -2137,6 +2155,27 @@ mod tests {
     use super::*;
     use std::io::{Read, Write};
 
+    #[test]
+    fn design_artifact_registration_reports_only_real_manifest_changes() {
+        let temporary = tempfile::tempdir().expect("tempdir");
+        let root = temporary.path();
+        crate::project::init_local_game_project_at(root, "design-artifact-test", "策划产物登记")
+            .expect("init project");
+        fs::create_dir_all(root.join("design_artifacts/project")).expect("create artifacts");
+        fs::write(root.join("design_artifacts/project/design.md"), "设计内容")
+            .expect("write artifact");
+
+        assert!(register_design_artifacts_at(root).expect("register first time"));
+        assert_eq!(
+            read_existing_manifest_for_project(root)
+                .unwrap()
+                .assets
+                .len(),
+            1
+        );
+        assert!(!register_design_artifacts_at(root).expect("register idempotently"));
+    }
+
     /// 画板导出推断出的 kind 必须已经是 canonical 值。
     ///
     /// 这个值会被原样写进 manifest 并据以派生落盘 `category`；一旦写出非 canonical 值
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index 74e1c6273..57dba10e8 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -308,6 +308,7 @@
 
 - 背景：立项策划 GDD 批准后需要给用户一个进入做游戏的自然出口，产品决策改为点击按钮后直接开始建造。
 - 决策：批准态 GDD 交付行提供“做成游戏”按钮。点击后读取当前项目的权威 `game/fast_gdd.md`，直接创建自动游戏工作区、导入 `text/markdown` 参考附件，并以固定建造指令自动启动 Direct Codex；不再回首页等待用户二次提交。该动作不复制原项目的 `approvedGddRef`、planning sidecar 或 approval receipt。
+- 补充：策划项目切换到 GameAgent 时，`design_artifacts` 的新增或登记信息实际变化必须与一次项目 revision 推进配对；重复切换不重复推进，避免 manifest 已变化而 revision 仍停留在旧值，触发前端同 revision 清单冲突提示。
 - 影响范围：AGC 前端 GDD 交付行与现有自动建项/附件导入/Direct Codex 链路；移除首页 RichInputArea 的 GDD 一次性预填链路；不新增 HTTP API、SpacetimeDB schema、迁移、OpenAPI 或正式构建绑定。
 - 验证方式：批准态按钮直接创建工作区、导入附件、携带固定首条指令进入项目工作台且重复点击不重复创建的 appSurface 回归；类型检查、编码检查和 `git diff --check` 通过。
 - 关联文档：`docs/technical/【技术方案】立项策划Agent（Fast GDD）-2026-08-10.md`。
diff --git a/docs/technical/【技术方案】策划Agent生产迁移与工作区浏览-2026-09-10.md b/docs/technical/【技术方案】策划Agent生产迁移与工作区浏览-2026-09-10.md
index 7c7eb7fdf..956aaa46f 100644
--- a/docs/technical/【技术方案】策划Agent生产迁移与工作区浏览-2026-09-10.md
+++ b/docs/technical/【技术方案】策划Agent生产迁移与工作区浏览-2026-09-10.md
@@ -342,7 +342,7 @@ UI 使用“批准”和“继续修改”两个文字按钮，分别配 Lucide
 
 ## 14. 开发调试入口
 
-项目运行模式通过 `.agent/runtime-mode.json` 持久化。新建策划项目在进入工作台前写入 `design`；“做成游戏”写入 `game`。重新打开项目时通过 `get_design_agent_runtime_mode` 读取模式，完成后一次性挂载对应工作台，不能先挂载 GameAgent 再切回策划。旧项目缺少模式文件但存在策划会话时按 `design` 恢复；明确的 `game` 标记优先于残留策划会话。无模式也无策划会话的项目仍使用游戏工作台。
+项目运行模式通过 `.agent/runtime-mode.json` 持久化。新建策划项目在进入工作台前写入 `design`；“做成游戏”先登记 `design_artifacts` 中尚未登记或登记信息已变化的策划产物，若 manifest 实际发生变化则在同一项目写锁范围内推进一次项目 revision，再写入 `game`。重复切换不重复登记或推进 revision。重新打开项目时通过 `get_design_agent_runtime_mode` 读取模式，完成后一次性挂载对应工作台，不能先挂载 GameAgent 再切回策划。旧项目缺少模式文件但存在策划会话时按 `design` 恢复；明确的 `game` 标记优先于残留策划会话。无模式也无策划会话的项目仍使用游戏工作台。
 
 开发构建的策划工作区页头在“刷新”旁提供“快速准备做成游戏测试”按钮。该入口与策划 Debug 日志共用 `GENARRATIVE_AGC_DESIGN_DEBUG=1` 开关：开关未启用时按钮不显示，命令也不可执行。入口仅进行本地 fixture 和会话状态写入，不调用 Provider；完成后自动刷新文件树与阶段，通过 `design-agent-update` 状态事件同步右侧审批/阶段操作区。随后仍需点击正常的“做成游戏”按钮执行资产登记与运行时切换。