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]/[mindmapId]/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" },
@@ -9,15 +10,30 @@ const defaultMindmapData = {
 };
 
 export async function GET(
-  _req: Request,
+  request: Request,
   { params }: { params: Promise<{ docId: string; mindmapId: string }> },
 ) {
   const { docId, mindmapId } = await params;
 
   if (isConvexEnabled()) {
-    const { client } = await getAuthedConvexClient();
+    const { auth, client } = await getAuthedConvexClient();
     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 });
@@ -30,7 +46,7 @@ export async function POST(
   const { docId, mindmapId } = await params;
 
   if (isConvexEnabled()) {
-    const { client } = await getAuthedConvexClient();
+    const { auth, client } = await getAuthedConvexClient();
     const { data, createOnly } = (await request.json().catch(() => ({ data: null }))) as {
       data?: unknown;
       createOnly?: boolean;
@@ -43,7 +59,18 @@ export async function POST(
         data: data ?? defaultMindmapData,
         ...(typeof createOnly === "boolean" ? { createOnly } : {}),
       });
-      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,
+        },
+      });
     } catch (error) {
       return NextResponse.json({ error: (error as Error).message }, { status: 400 });
     }
@@ -53,16 +80,27 @@ export async function POST(
 }
 
 export async function DELETE(
-  _req: Request,
+  request: Request,
   { params }: { params: Promise<{ docId: string; mindmapId: string }> },
 ) {
   const { docId, mindmapId } = await params;
 
   if (isConvexEnabled()) {
-    const { client } = await getAuthedConvexClient();
+    const { auth, client } = await getAuthedConvexClient();
     try {
       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,
+        },
+      });
     } catch (error) {
       return NextResponse.json({ error: (error as Error).message }, { status: 400 });
     }
@@ -78,7 +116,7 @@ export async function PATCH(
   const { docId, mindmapId } = await params;
 
   if (isConvexEnabled()) {
-    const { client } = await getAuthedConvexClient();
+    const { auth, client } = await getAuthedConvexClient();
     const { action } = (await request.json().catch(() => ({}))) as { action?: string };
     if (action !== "restore" && action !== "purge") {
       return NextResponse.json({ error: "不支持的操作" }, { status: 400 });
@@ -87,10 +125,29 @@ export async function PATCH(
     try {
       if (action === "purge") {
         const result = await client.mutation(api.mindmaps.purge, { 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,
+          }),
+        });
       }
       const result = await client.mutation(api.mindmaps.restore, { 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,
+          }),
+          updatedAt: result?.updated_at ?? null,
+        },
+      });
     } catch (error) {
       const msg = (error as Error).message ?? "操作失败";
       const status = msg.includes("未找到") ? 404 : 400;
@@ -100,4 +157,3 @@ export async function PATCH(
 
   return NextResponse.json({ error: "当前仅支持 Convex 模式" }, { status: 501 });
 }
-