Add Hidden to ToolDesc for reserved tool capabilities

Why: the fs tool family (proposal 2026-09-30-file-preview-and-reserved-
capabilities) is implemented but must stay invisible to models and tool
listings until a runtime gate opens it.

Evidence: new bool field with json omitempty; no golden samples carry it;
go test ./... green.

Impact: registries can mark gated tools; servers and runners filter on
it (backend PR in the same task).

Refs: task feature/file-preview-caps.

AGENTS.md

@@ -17,3 +17,20 @@
 - 模块边界、公开契约与隔离档位见 `policy/modules/`（如有）与 PROJECT.md。
 - 跨仓 gitlink 变更须经组合验证后在 Dev 仓推进；受保护分支经 PR 合入。
 - 验证命令见 PROJECT.md「验证」节；完成声明须附实际命令输出证据。
+
+## Gitea 与 Git 访问事实（2026-09-30 实测）
+
+历史文档与旧链接里的 `git-panel.u1680832.nyat.app:30319` 已失效（TLS 握手失败），
+见到一律按过期处理，不要再试。当前权威通道：
+
+- **Web / API（HTTPS）**：`https://git-home.u1680832.nyat.app:30319`（Gitea 1.27.3，
+  API 前缀 `/api/v1`；偶发 broken pipe / 超时，重试即可）。
+- **Git over SSH**：`ssh://git@git-ssh.u1680832.nyat.app:31411/weichen/<Repo>.git`
+  （各仓 origin 与 gitlink 均为此格式）。
+- **API token**：`~/.secrets/gitea`，两行键值 `URL_PREFIX=…` 与
+  `ACCESS_TOKEN=<40 位 hex>`；取值 `grep ACCESS_TOKEN ~/.secrets/gitea | cut -d= -f2-`，
+  用作 `Authorization: token <值>` 请求头。**token 值不入仓、不回显、不写进产出物**
+  （baseline 硬边界 2：只记录来源、字段与可用状态）。
+- **SSH key**：`~/.ssh/home_gitea`（ED25519，公钥指纹
+  `SHA256:GYXaOXIMeloQ1fKSfdJ/ndgPQzs/Ix7Hk62ekfkfQ20`，Gitea 侧密钥名 GMKtec）；
+  `~/.ssh/config` 已有 `git-ssh.u1680832.nyat.app` 主机条目，克隆/推送直接可用。

conformance_test.go

@@ -47,6 +47,7 @@ func sampleMessage() Message {
 			{Type: PartToolResult, Process: true, ToolResult: &ToolResultPart{CallID: "call_1", Status: "ok", Summary: "3 条命中"}},
 			{Type: PartText, Text: "根据历史记录……"},
 			{Type: PartArtifactRef, Artifact: &ArtifactRef{ArtifactID: "art_abc123def456", Name: "报告.md", Kind: "document"}},
+			{Type: PartCard, Card: &CardPart{Kind: "result", Data: []UINode{{Type: "markdown", Markdown: "全文见卡片"}}, CardID: "card_abc123def456"}},
 		},
 	}
 }
@@ -63,7 +64,7 @@ func TestGoldenDomain(t *testing.T) {
 	golden(t, "message", sampleMessage())
 	golden(t, "run", sampleRun())
 	golden(t, "project", Project{ID: "prj_abc123def456", Name: "示例项目"})
-	golden(t, "conversation", Conversation{ID: "cnv_abc123def456", ProjectID: "prj_abc123def456", Title: "新会话"})
+	golden(t, "conversation", Conversation{ID: "cnv_abc123def456", ProjectID: "prj_abc123def456", Title: "新会话", AllowCrossRead: true, CrossPrivate: true})
 	golden(t, "artifact", Artifact{ID: "art_abc123def456", ProjectID: "prj_abc123def456", Name: "报告.md", Kind: "document", MIME: "text/markdown", Size: 128})
 }
 
@@ -176,7 +177,7 @@ func TestGoldenProfileAndTools(t *testing.T) {
 	golden(t, "tool_http", ToolDesc{
 		Name: "http_translate", Description: "调用翻译 API", Source: SourceUser,
 		Parameters: json.RawMessage(`{"type":"object","properties":{"text":{"type":"string"}},"required":["text"]}`),
-		HTTP: &HTTPToolSpec{Method: "POST", URL: "https://api.example.com/translate", BodyTemplate: `{"q":"{{param.text}}"}`, TimeoutMs: 10000, ResultPath: "data.0"},
+		HTTP:       &HTTPToolSpec{Method: "POST", URL: "https://api.example.com/translate", BodyTemplate: `{"q":"{{param.text}}"}`, TimeoutMs: 10000, ResultPath: "data.0"},
 	})
 }
 

model.go

@@ -33,6 +33,8 @@ type Conversation struct {
 	ProfileID ID           `json:"profileId,omitempty"` // 空为默认画像
 	Pinned    bool         `json:"pinned,omitempty"`    // 侧栏置顶（方案 A P6/P8：本端组织偏好，服务端权威）
 	Archived  bool         `json:"archived,omitempty"`  // 归档：列表默认隐藏，数据保留
+	AllowCrossRead bool    `json:"allowCrossRead,omitempty"` // 跨会话出站：本会话读取同项目其他会话记录（需项目开关 crossSession.read）
+	CrossPrivate    bool    `json:"crossPrivate,omitempty"`   // 跨会话入站：私有会话，不被他读、不出现在他方列表
 	CreatedAt time.Time    `json:"createdAt"`
 	UpdatedAt time.Time    `json:"updatedAt"`
 }
@@ -122,9 +124,12 @@ type ErrorPart struct {
 }
 
 // CardPart.Data 是 UI schema 节点（4.6 有限词汇）。
+// CardID 非空 = 收件箱 ActivityCard 的引用部件（如 submit_card 产卡：卡片为产物
+// 权威载体，消息只存引用+锚点渲染）；空 = 插件内嵌卡片部件（自包含 Data）。
 type CardPart struct {
-	Kind string  `json:"kind"`
-	Data []UINode `json:"data"`
+	Kind   string   `json:"kind"`
+	Data   []UINode `json:"data"`
+	CardID ID       `json:"cardId,omitempty"`
 }
 
 // ---- Run（一切运行皆 Run）----

testdata/golden/conversation.json

@@ -2,6 +2,8 @@
   "id": "cnv_abc123def456",
   "projectId": "prj_abc123def456",
   "title": "新会话",
+  "allowCrossRead": true,
+  "crossPrivate": true,
   "createdAt": "0001-01-01T00:00:00Z",
   "updatedAt": "0001-01-01T00:00:00Z"
 }

testdata/golden/message.json

@@ -39,6 +39,19 @@
         "name": "报告.md",
         "kind": "document"
       }
+    },
+    {
+      "type": "card",
+      "card": {
+        "kind": "result",
+        "data": [
+          {
+            "type": "markdown",
+            "markdown": "全文见卡片"
+          }
+        ],
+        "cardId": "card_abc123def456"
+      }
     }
   ],
   "createdAt": "0001-01-01T00:00:00Z"

tools.go

@@ -20,6 +20,9 @@ type ToolDesc struct {
 	Source      SourceKind      `json:"source"`
 	PluginID    string          `json:"pluginId,omitempty"`
 	HTTP        *HTTPToolSpec   `json:"http,omitempty"` // 声明式 HTTP 工具（无代码）
+	// Hidden 预留能力形态：默认不对模型与 /api/tools 列表可见，须运行时开关
+	// （如 runtime.fsTools）或管理动作开启后可用（提案 2026-09-30-file-preview-and-reserved-capabilities）。
+	Hidden bool `json:"hidden,omitempty"`
 }
 
 // HTTPToolSpec：无代码自定义工具（4.8）。模板变量 {{param.x}} 从调用参数注入。

ts/types.ts

@@ -14,6 +14,7 @@ export interface Project {
 export interface Conversation {
   id: ID; projectId: ID; owner?: ID; title: string; profileId?: ID;
   pinned?: boolean; archived?: boolean;
+  allowCrossRead?: boolean; crossPrivate?: boolean;
   createdAt: string; updatedAt: string;
 }
 
@@ -31,7 +32,7 @@ export interface Part {
   artifact?: { artifactId: ID; name: string; kind?: string };
   hitl?: { cardId: ID; question: string; resolved: boolean; answer?: string };
   plan?: PlanSnapshot;
-  card?: { kind: string; data: UINode[] };
+  card?: { kind: string; data: UINode[]; cardId?: ID }; // cardId 非空 = 收件箱卡片引用部件（submit_card）
   error?: { code: string; message: string };
   process?: boolean; // run 终态后折叠为摘要行
 }