合并 master：Cocos 插件按当前项目类型暴露

- 合入 origin/master c19b32178，使 PR 头包含当前 master tip，修 CI comparison base 门禁（11 秒红）
- 冲突 1 处：docs/project-memory/shared-memory/decision-log.md 两侧追加记录，两条逐字保留（HEAD 的 2026-09-11 起多条 + master 的「2026-09-13 Cocos 插件按当前项目类型暴露」），只删 3 行冲突标记
- 验证：npm run check:doc-index 通过（97 份 Markdown）；npm run typecheck exit 0；check:encoding 4557 文件通过；git diff --check 干净；全仓无冲突标记

apps/ai-game-creator-shell/src-tauri/src/agent/direct_tool_bridge.rs

@@ -2353,9 +2353,10 @@ async fn bridge_cocos_call(
     arguments: &Value,
     operation: Option<&str>,
 ) -> Value {
-    if !crate::builtin_plugins::cocos_editor_agent_tool_available() {
+    if !crate::builtin_plugins::cocos_editor_agent_tool_available_for_project(&state.root) {
         return bridge_tool_result(
-            "Cocos Creator 插件已禁用，agc_cocos_execute 不可用".to_string(),
+            "当前项目不是 Cocos Creator 项目或 Cocos 插件不可用，agc_cocos_execute 不可用"
+                .to_string(),
             Vec::new(),
             true,
         );
@@ -2420,9 +2421,9 @@ async fn bridge_cocos_call(
         // validated Inspector/pipe bridge. It does not mutate AGC's project
         // files or manifest, so it must not wait on `.agent/project.lock`.
         // File-writing tools keep their own project lock separately.
-        if !crate::builtin_plugins::cocos_editor_agent_tool_available() {
+        if !crate::builtin_plugins::cocos_editor_agent_tool_available_for_project(&root) {
             return Err(cocos_editor_bridge::BridgeError::InvalidInput(
-                "Cocos Creator 插件已禁用".to_string(),
+                "当前项目不是 Cocos Creator 项目或 Cocos 插件不可用".to_string(),
             ));
         }
         cocos_editor_bridge::execute_cocos_editor_code_for_project(
@@ -2525,7 +2526,7 @@ async fn handle_direct_tool_bridge(
     let result = match request.tool.as_str() {
         // 隔离 MCP 只取工具名，不接触真实 AppData 或读取权限。
         "builtin.plugins.tools" => bridge_tool_result(
-            json!({"tools": crate::builtin_plugins::available_agent_tools()}).to_string(),
+            json!({"tools": crate::builtin_plugins::available_agent_tools_for_project(&state.root)}).to_string(),
             Vec::new(),
             false,
         ),

apps/ai-game-creator-shell/src-tauri/src/agent/direct_tools_mcp.rs

@@ -1862,7 +1862,13 @@ mod tests {
         let config = tempfile::tempdir().unwrap();
         crate::builtin_plugins::initialize(config.path()).unwrap();
         let project = crate::tests::canonical_test_tempdir("builtin-mcp-project-");
-        // 本用例只访问可用工具摘要和禁用入口，无需初始化完整游戏项目。
+        // 工具目录现在按当前项目类型过滤，fixture 必须具备最小 Cocos Creator 结构。
+        std::fs::write(
+            project.path().join("package.json"),
+            r#"{"creator":{"version":"3.8.8"}}"#,
+        )
+        .unwrap();
+        std::fs::create_dir(project.path().join("assets")).unwrap();
         std::fs::create_dir_all(project.path().join(".agent")).unwrap();
         std::fs::write(project.path().join(".agent/manifest.json"), "{}").unwrap();
         let bridge =

apps/ai-game-creator-shell/src-tauri/src/agent/runtime_tools/cocos_editor.rs

@@ -33,11 +33,11 @@ pub(in crate::agent) fn observe_agent_runtime_cocos_editor_execute(
             detail: None,
         };
     }
-    if !crate::builtin_plugins::cocos_editor_agent_tool_available() {
+    if !crate::builtin_plugins::cocos_editor_agent_tool_available_for_project(root) {
         return AgentRuntimeToolObservation {
             tool: "cocos.editor.execute".to_string(),
             status: "failed".to_string(),
-            summary: "Cocos Creator 插件已禁用".to_string(),
+            summary: "当前项目不是 Cocos Creator 项目或 Cocos 插件不可用".to_string(),
             detail: None,
         };
     }

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

@@ -245,6 +245,17 @@ pub(crate) fn cocos_editor_agent_tool_available() -> bool {
     agent_tool_available(BuiltinPlugin::CocosEditor)
 }
 
+/// Cocos 编辑器插件只对当前确认为 Cocos Creator 的项目可用。
+///
+/// 项目类型以项目根的真实结构为准，不能仅凭插件开关或编译 feature 推断。
+pub(crate) fn cocos_editor_agent_tool_available_for_project(root: &Path) -> bool {
+    cocos_editor_agent_tool_available()
+        && crate::project::discover_local_cocos_project_root(root)
+            .ok()
+            .flatten()
+            .is_some()
+}
+
 pub(crate) fn available_agent_tools() -> Vec<&'static str> {
     if cocos_editor_agent_tool_available() {
         let mut tools = vec![AGC_COCOS_EDITOR_TOOL_NAME];
@@ -259,6 +270,15 @@ pub(crate) fn available_agent_tools() -> Vec<&'static str> {
     }
 }
 
+/// Project-scoped variant used by the isolated DirectProject MCP bridge.
+/// Without a project root the safe result is an empty Cocos tool set.
+pub(crate) fn available_agent_tools_for_project(root: &Path) -> Vec<&'static str> {
+    if !cocos_editor_agent_tool_available_for_project(root) {
+        return Vec::new();
+    }
+    available_agent_tools()
+}
+
 #[cfg(test)]
 pub(crate) use tests::test_lock;
 
@@ -435,4 +455,32 @@ mod tests {
             tool_visible_when_enabled
         );
     }
+
+    #[test]
+    fn project_scoped_availability_requires_a_cocos_creator_root() {
+        let _guard = test_lock();
+        let directory = tempdir().expect("temp config");
+        initialize(directory.path()).expect("initialize");
+        set_enabled(AGC_COCOS_EDITOR_PLUGIN_ID, true).expect("enable");
+        let non_cocos = tempdir().expect("non-cocos project");
+        assert!(!cocos_editor_agent_tool_available_for_project(
+            non_cocos.path()
+        ));
+
+        let cocos = tempdir().expect("cocos project");
+        fs::write(
+            cocos.path().join("package.json"),
+            r#"{"creator":{"version":"3.8.8"}}"#,
+        )
+        .expect("cocos package");
+        fs::create_dir(cocos.path().join("assets")).expect("cocos assets");
+        assert_eq!(
+            cocos_editor_agent_tool_available_for_project(cocos.path()),
+            cfg!(feature = "cocos-editor-execute")
+        );
+        assert_eq!(
+            available_agent_tools_for_project(non_cocos.path()),
+            Vec::<&'static str>::new()
+        );
+    }
 }

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

@@ -937,9 +937,23 @@ impl PluginHost {
             .clone()
             .ok_or_else(|| "插件宿主尚未初始化".to_string())?;
         self.scan_locked(&mut state, &root)?;
+        let cocos_project = state
+            .active_project
+            .lock()
+            .map_err(|_| "项目上下文锁已损坏".to_string())?
+            .as_deref()
+            .is_some_and(|path| {
+                crate::project::discover_local_cocos_project_root(path)
+                    .ok()
+                    .flatten()
+                    .is_some()
+            });
         state
             .plugins
             .values()
+            .filter(|record| {
+                record.id != crate::builtin_plugins::AGC_COCOS_EDITOR_PLUGIN_ID || cocos_project
+            })
             .map(|record| self.summary_locked(record))
             .collect()
     }
@@ -1003,6 +1017,20 @@ impl PluginHost {
             .clone()
             .ok_or_else(|| "插件宿主尚未初始化".to_string())?;
         let active_project = state.active_project.clone();
+        if id == crate::builtin_plugins::AGC_COCOS_EDITOR_PLUGIN_ID
+            && !active_project
+                .lock()
+                .map_err(|_| "项目上下文锁已损坏".to_string())?
+                .as_deref()
+                .is_some_and(|path| {
+                    crate::project::discover_local_cocos_project_root(path)
+                        .ok()
+                        .flatten()
+                        .is_some()
+                })
+        {
+            return Err("Cocos 编辑器插件只对当前 Cocos Creator 项目可用".to_string());
+        }
         let editors = state.editors.clone();
         let record = state
             .plugins
@@ -1100,6 +1128,21 @@ impl PluginHost {
             .plugins
             .get(id)
             .ok_or_else(|| "插件不存在".to_string())?;
+        if id == crate::builtin_plugins::AGC_COCOS_EDITOR_PLUGIN_ID
+            && !state
+                .active_project
+                .lock()
+                .map_err(|_| "项目上下文锁已损坏".to_string())?
+                .as_deref()
+                .is_some_and(|path| {
+                    crate::project::discover_local_cocos_project_root(path)
+                        .ok()
+                        .flatten()
+                        .is_some()
+                })
+        {
+            return Err("Cocos 编辑器插件只对当前 Cocos Creator 项目可用".to_string());
+        }
         if record.running.is_none() || !record.manifest.permissions.contains("ui.register") {
             return Err("插件面板未激活".to_string());
         }
@@ -1145,6 +1188,21 @@ impl PluginHost {
                 .root
                 .clone()
                 .ok_or_else(|| "插件宿主尚未初始化".to_string())?;
+            if id == crate::builtin_plugins::AGC_COCOS_EDITOR_PLUGIN_ID
+                && !state
+                    .active_project
+                    .lock()
+                    .map_err(|_| "项目上下文锁已损坏".to_string())?
+                    .as_deref()
+                    .is_some_and(|path| {
+                        crate::project::discover_local_cocos_project_root(path)
+                            .ok()
+                            .flatten()
+                            .is_some()
+                    })
+            {
+                return Err("Cocos 编辑器插件只对当前 Cocos Creator 项目可用".to_string());
+            }
             let record = state
                 .plugins
                 .get_mut(id)
@@ -1478,6 +1536,20 @@ impl PluginHost {
             }
             "host.rpc" => {
                 let input: EditorRpcInput = descriptor_from_params(params)?;
+                if manifest.id == crate::builtin_plugins::AGC_COCOS_EDITOR_PLUGIN_ID
+                    && !active_project
+                        .lock()
+                        .map_err(|_| "项目上下文锁已损坏".to_string())?
+                        .as_deref()
+                        .is_some_and(|path| {
+                            crate::project::discover_local_cocos_project_root(path)
+                                .ok()
+                                .flatten()
+                                .is_some()
+                        })
+                {
+                    return Err("Cocos 编辑器插件只对当前 Cocos Creator 项目可用".to_string());
+                }
                 let adapter = input
                     .adapter
                     .or_else(|| manifest.adapter.clone())
@@ -1534,7 +1606,7 @@ impl PluginHost {
     }
 
     pub(crate) fn set_active_project(&self, project_path: Option<String>) -> Result<(), String> {
-        let state = self
+        let mut state = self
             .state
             .lock()
             .map_err(|_| "插件宿主锁已损坏".to_string())?;
@@ -1548,10 +1620,30 @@ impl PluginHost {
                     .map_err(|_| "项目目录不可读".to_string())
             })
             .transpose()?;
+        let is_cocos_project = project.as_deref().is_some_and(|path| {
+            crate::project::discover_local_cocos_project_root(path)
+                .ok()
+                .flatten()
+                .is_some()
+        });
         *state
             .active_project
             .lock()
             .map_err(|_| "项目上下文锁已损坏".to_string())? = project;
+        if !is_cocos_project {
+            if let Some(record) = state
+                .plugins
+                .get_mut(crate::builtin_plugins::AGC_COCOS_EDITOR_PLUGIN_ID)
+            {
+                if let Some(mut running) = record.running.take() {
+                    let _ = running.child.kill();
+                    let _ = running.child.wait();
+                }
+                if record.manifest.enabled {
+                    record.status = "stopped".to_string();
+                }
+            }
+        }
         for record in state.plugins.values() {
             if let Some(running) = record.running.as_ref() {
                 let subscribed = running
@@ -2020,12 +2112,20 @@ setTimeout(() => send({ jsonrpc: '2.0', id: 1, method: 'host.registerCommand', p
     fn builtin_plugin_toggle_controls_availability() {
         let _guard = crate::builtin_plugins::test_lock();
         let directory = tempdir().expect("temp config");
+        fs::write(
+            directory.path().join("package.json"),
+            r#"{"creator":{"version":"3.8.8"}}"#,
+        )
+        .expect("cocos package");
+        fs::create_dir(directory.path().join("assets")).expect("cocos assets");
         let workspace = Path::new(env!("CARGO_MANIFEST_DIR")).join("../../../plugins");
         let host = PluginHost::default();
         crate::builtin_plugins::initialize(directory.path()).expect("builtin plugin state");
         host.initialize(directory.path()).expect("initialize");
         host.set_plugin_workspace(workspace)
             .expect("set plugins workspace");
+        host.set_active_project(Some(directory.path().to_string_lossy().into_owned()))
+            .expect("set cocos project");
 
         let summary = |list: Vec<PluginSummary>| {
             list.into_iter()
@@ -2060,6 +2160,12 @@ setTimeout(() => send({ jsonrpc: '2.0', id: 1, method: 'host.registerCommand', p
     fn workspace_cocos_plugin_round_trips_editor_rpc() {
         let _guard = crate::builtin_plugins::test_lock();
         let directory = tempdir().expect("temp config");
+        fs::write(
+            directory.path().join("package.json"),
+            r#"{"creator":{"version":"3.8.8"}}"#,
+        )
+        .expect("cocos package");
+        fs::create_dir(directory.path().join("assets")).expect("cocos assets");
         crate::builtin_plugins::initialize(directory.path()).expect("builtin state");
         let workspace = Path::new(env!("CARGO_MANIFEST_DIR")).join("../../../plugins");
         let host = PluginHost::default();
@@ -2108,4 +2214,25 @@ setTimeout(() => send({ jsonrpc: '2.0', id: 1, method: 'host.registerCommand', p
             "stopped"
         );
     }
+
+    #[test]
+    fn cocos_plugin_is_hidden_and_cannot_start_for_non_cocos_project() {
+        let _guard = crate::builtin_plugins::test_lock();
+        let directory = tempdir().expect("temp config");
+        crate::builtin_plugins::initialize(directory.path()).expect("builtin state");
+        let workspace = Path::new(env!("CARGO_MANIFEST_DIR")).join("../../../plugins");
+        let host = PluginHost::default();
+        host.initialize(directory.path()).expect("initialize");
+        host.set_plugin_workspace(workspace).expect("set workspace");
+
+        let project = tempdir().expect("web project");
+        host.set_active_project(Some(project.path().to_string_lossy().into_owned()))
+            .expect("set active project");
+        assert!(host
+            .list()
+            .expect("list plugins")
+            .into_iter()
+            .all(|plugin| plugin.id != "agc-cocos-editor"));
+        assert!(host.start("agc-cocos-editor").is_err());
+    }
 }

docs/project-memory/shared-memory/decision-log.md

@@ -8624,3 +8624,8 @@ CI 上 `background_agent_runtime_recovers_stale_running_before_pending_task` 在
 - 影响范围：`apps/ai-game-creator-shell/src/features/resource-canvas/{resourceCanvasBottomToolbarModel.ts,ResourceCanvasBottomToolbarView.tsx,ResourceCanvasAssetGenerationPanelView.tsx,ResourceCanvasGenerationPanelView.tsx,resourceCanvasChrome.css}`、`apps/ai-game-creator-shell/src/view/project-development/index.tsx`、测试 `apps/ai-game-creator-shell/tests/{resourceCanvasBottomToolbar.test.tsx(新增),resourceCanvasGenerationEntry.test.tsx,projectResourceLiveIntegration.test.tsx,appSurface/project-development.suite.ts}`、PRD §3.10 / §7.9 / §8、`docs/technical/【AGC】栏目画布底部工具栏入口矩阵-2026-09-13.md`（新增）、验收用例 S11 / S11a。**未动**：Rust、external v1 / OpenAPI、`packages/`（只消费共享 chrome）、SpacetimeDB。
 - 验证方式：`npx vitest run apps/ai-game-creator-shell/tests/appSurface.test.ts`（423 passed，含新增 6 条：栏目分流与总览不渲染、UI 栏 5 个入口载荷、前置缺失可点击说明且零请求、角色栏 2 个入口、音频入口走既有链路、上传 + 配对读清单，另 1 条工具栏与 Dock 的 CSS 几何契约）；`resourceCanvasBottomToolbar.test.tsx` 15 passed（新增）；`resourceCanvasGenerationEntry.test.tsx` 11 passed（新增单类型用例 1 条）；`projectResourceLiveIntegration.test.tsx` 25 passed（「生成素材」面板改名断言同步更新）；`npm run agc:typecheck` 全绿（**其中的 `check-config.mjs` 报错已因本轮落地调用方而消失**）、`npm run check:encoding`、`git diff --check` 干净。未 commit。
 - 关联文档：`docs/prd/【AI游戏创作】项目开发工作台PRD-2026-07-20.md`（§3.10 / §7.9 / §8）、`docs/technical/【AGC】栏目画布底部工具栏入口矩阵-2026-09-13.md`、`docs/technical/【测试用例】AGC资源工作台V3端到端验收-2026-09-11.md`（S11 / S11a / §7.3）。
+## 2026-09-13 Cocos 插件按当前项目类型暴露
+
+- 决策：`agc-cocos-editor` 只有在当前受控项目通过 Cocos Creator 根目录识别（`package.json.creator.version` + 普通 `assets/`）时才暴露插件、面板和 Cocos 工具；无项目或其它项目类型均隐藏并失败关闭。
+- 决策：项目切换离开 Cocos 时立即停止已运行的插件实例；启动、面板读取、插件 RPC、Runtime execute 和 DirectProject MCP 工具目录/执行入口全部再次校验项目类型。Cocos 编辑器操作优先经内置插件入口，禁止回退到项目 `extensions/`、`package.json` 插件或第三方 MCP。
+- 验证：新增 builtin/plugin host 项目级门禁测试，Direct MCP fixture 补最小 Cocos 工程结构；Rust 定向测试、显式 `cocos-editor-execute` feature 编译、编码检查和 `git diff --check` 已执行。

docs/technical/【技术方案】AGC Cocos Creator 编辑器桥接模块-2026-09-09.md

@@ -71,7 +71,7 @@ plugins/agc-cocos-editor/
 
 宿主按 `AGC_PLUGIN_WORKSPACE`、随包 `<resource_dir>/plugins`、开发构建仓库 `plugins/` 的顺序解析工作区；插件包内的 `native/payload` 由构建脚本随包映射，生成的 DLL 不入库。插件协议、权限和面板挂载全部复用通用宿主，Cocos 专属逻辑只存在于本插件包：进程名与 `--project` 解析、Creator 版本校验、named pipe 协议和 Windows 注入。
 
-该插件是**内置插件**：随客户端分发、不能卸载，只能通过 `set_agc_plugin_enabled` 控制是否可用。禁用后插件进程停止且不能启动，通用 execute 和全部 `cocos_*` 工具从 Agent 目录消失；直接请求隐藏工具也会在宿主执行前被拒绝。开关状态保存在 AppData `extensions/builtin-plugins.json`，隔离 MCP 每次 tools/list 都向绑定宿主询问当前状态。
+该插件是**内置插件**：随客户端分发、不能卸载，只能通过 `set_agc_plugin_enabled` 控制是否可用。除开关和 feature 外，还必须满足“当前受控项目已识别为 Cocos Creator 项目”这一门禁；没有当前项目或项目类型不是 Cocos 时，插件不出现在插件列表、面板、Agent 工具目录或 MCP tools/list 中，启动、面板读取、RPC 和编辑器执行也会失败关闭。项目切换离开 Cocos 后，已运行实例立即停止。Cocos 编辑器操作统一优先通过该内置插件的 `cocos.editor.execute` / `cocos.editor.operation`（DirectProject 对应 `agc_cocos_execute`）；不得改走项目目录 `extensions/`、`package.json` 插件或第三方 MCP。开关状态保存在 AppData `extensions/builtin-plugins.json`，隔离 MCP 每次 tools/list 都向绑定宿主询问当前状态与项目门禁。
 
 ## AGC 项目打开入口
 

plugins/agc-cocos-editor/README.md

@@ -3,9 +3,11 @@
 Cocos Creator 编辑器桥接插件。用户侧看到的是一个普通 AGC 插件：插件生命周期、UI、
 RPC、权限和能力注册全部由通用宿主负责，只有“如何连接 Cocos Creator”属于本插件。
 
-它同时是 AGC 的**内置插件**：随客户端分发、不能卸载。用户在运行时设置里只能切换
-“是否可用”，禁用后插件不能启动，`agc_cocos_execute` 与全部 `cocos_*` Agent 工具也会
-从 Agent 工具列表、工具策略快照和上下文里消失；重新启用后立即恢复。
+它同时是 AGC 的**内置插件**：随客户端分发、不能卸载。只有当前受控目录被识别为 Cocos
+Creator 项目时才会暴露插件、面板和工具；切换到其它项目会立即停止插件实例并隐藏对应能力。
+用户在运行时设置里只能切换“是否可用”，禁用后插件不能启动，`agc_cocos_execute` 与全部
+`cocos_*` Agent 工具也会从 Agent 工具列表、工具策略快照和上下文里消失；重新启用后仍需
+满足当前项目是 Cocos 的门禁。
 
 Cocos Creator 项目目录中的 `extensions/`、`package.json` 插件声明或第三方 MCP 包不属于
 AGC Cocos 桥接来源。Agent 处理 Cocos 请求时只使用客户端登记的 `agc-cocos-editor`