feat: 收口文档桥接与 OnlyOffice/Sidebar 回归

- 为 documents.save/meta/content、blocks.patch 与 sidebar.dataset.list 补齐 Rust 协议映射、共享契约与桥接执行器

- 对齐 BlockNote、Mindmap、OnlyOffice 的保存/路由元信息，并补真实浏览器回归脚本与 OnlyOffice 部署基线

- 忽略 Rust 本地构建产物与 Harness 调试状态文件，避免临时产物进入仓库历史

wolai-frontend/src/app/api/mindmap/[docId]/route.ts

@@ -2,6 +2,7 @@ import { NextResponse } from "next/server";
 import { isConvexEnabled } from "@/lib/convex/enabled";
 import { getAuthedConvexClient } from "@/lib/convex/route";
 import { api } from "@/lib/convex/api";
+import { buildMindmapRouteMeta } from "@/lib/mindmap/mindmapRouteMeta";
 
 const defaultMindmapData = {
   data: { text: "中心主题" },
@@ -9,16 +10,31 @@ const defaultMindmapData = {
 };
 
 export async function GET(
-  _req: Request,
+  request: Request,
   { params }: { params: Promise<{ docId: string }> },
 ) {
   const { docId } = await params;
 
   if (isConvexEnabled()) {
-    const { client } = await getAuthedConvexClient();
+    const { auth, client } = await getAuthedConvexClient();
     const mindmapId = `legacy-${docId}`;
     const res = await client.query(api.mindmaps.get, { docId, mindmapId });
-    return NextResponse.json({ data: res?.data ?? defaultMindmapData, source: "convex" });
+    return NextResponse.json({
+      data: res?.data ?? defaultMindmapData,
+      source: "convex",
+      meta: {
+        ...buildMindmapRouteMeta(request, {
+          workspaceId: res?.meta?.workspace_id ?? null,
+          documentId: docId,
+          mindmapId,
+          ownerUserId: auth.userId,
+        }),
+        exists: Boolean(res?.meta?.exists),
+        deletedAt: res?.meta?.deleted_at ?? null,
+        createdAt: res?.meta?.created_at ?? null,
+        updatedAt: res?.meta?.updated_at ?? null,
+      },
+    });
   }
 
   return NextResponse.json({ error: "当前仅支持 Convex 模式" }, { status: 501 });
@@ -31,7 +47,7 @@ export async function POST(
   const { docId } = await params;
 
   if (isConvexEnabled()) {
-    const { client } = await getAuthedConvexClient();
+    const { auth, client } = await getAuthedConvexClient();
     const mindmapId = `legacy-${docId}`;
     const payload = (await request.json().catch(() => ({}))) as { data?: unknown };
     const result = await client.mutation(api.mindmaps.put, {
@@ -39,25 +55,46 @@ export async function POST(
       mindmapId,
       data: payload.data ?? defaultMindmapData,
     });
-    return NextResponse.json(result ?? { ok: true });
+    return NextResponse.json({
+      ...(result ?? { ok: true }),
+      meta: {
+        ...buildMindmapRouteMeta(request, {
+          workspaceId: result?.workspace_id ?? null,
+          documentId: docId,
+          mindmapId,
+          ownerUserId: auth.userId,
+        }),
+        updatedAt: result?.updated_at ?? null,
+      },
+    });
   }
 
   return NextResponse.json({ error: "当前仅支持 Convex 模式" }, { status: 501 });
 }
 
 export async function DELETE(
-  _req: Request,
+  request: Request,
   { params }: { params: Promise<{ docId: string }> },
 ) {
   const { docId } = await params;
 
   if (isConvexEnabled()) {
-    const { client } = await getAuthedConvexClient();
+    const { auth, client } = await getAuthedConvexClient();
     const mindmapId = `legacy-${docId}`;
     const result = await client.mutation(api.mindmaps.softDelete, { docId, mindmapId });
-    return NextResponse.json(result ?? { ok: true });
+    return NextResponse.json({
+      ...(result ?? { ok: true }),
+      meta: {
+        ...buildMindmapRouteMeta(request, {
+          workspaceId: result?.workspace_id ?? null,
+          documentId: docId,
+          mindmapId,
+          ownerUserId: auth.userId,
+        }),
+        deletedAt: result?.deleted_at ?? null,
+      },
+    });
   }
 
   return NextResponse.json({ error: "当前仅支持 Convex 模式" }, { status: 501 });
 }
-