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/components/editor/document-content.tsx

@@ -38,6 +38,8 @@ export interface DocumentContentProps {
   title: string | null;
   updatedAt: string | null;
   initialContent: unknown;
+  initialContentRevision?: number | null;
+  initialConflictDetectionKey?: string | null;
   initialOptions: PageOptionsState;
   initialStats: DocumentStats | null;
   openTableId?: string | null;
@@ -69,6 +71,8 @@ export function DocumentContent({
   title,
   updatedAt,
   initialContent,
+  initialContentRevision = null,
+  initialConflictDetectionKey = null,
   initialOptions,
   initialStats,
   openTableId,
@@ -90,6 +94,8 @@ export function DocumentContent({
   const openMoveEmbedPicker = useMoveEmbedPickerStore((s) => s.openPicker);
   const [pageTitle, setPageTitle] = useState(title ?? "无标题");
   const [content, setContent] = useState<unknown>(initialContent);
+  const [contentRevision, setContentRevision] = useState<number | null>(initialContentRevision);
+  const [conflictDetectionKey, setConflictDetectionKey] = useState<string | null>(initialConflictDetectionKey);
   const [contentLoading, setContentLoading] = useState(() => initialContent == null);
   const [contentError, setContentError] = useState<string | null>(null);
   const [contentReloadKey, setContentReloadKey] = useState(0);
@@ -204,6 +210,14 @@ export function DocumentContent({
   useEffect(() => {
     setStats(initialStats ?? defaultStats);
   }, [initialStats]);
+
+  useEffect(() => {
+    setContentRevision(initialContentRevision);
+  }, [initialContentRevision]);
+
+  useEffect(() => {
+    setConflictDetectionKey(initialConflictDetectionKey);
+  }, [initialConflictDetectionKey]);
    
 
   useEffect(() => {
@@ -244,9 +258,23 @@ export function DocumentContent({
           const payload = await response.json().catch(() => ({}));
           throw new Error(payload?.error ?? "加载页面内容失败");
         }
-        const payload = (await response.json()) as { content?: unknown };
+        const payload = (await response.json()) as {
+          content?: unknown;
+          revision?: number | null;
+          conflictDetectionKey?: string | null;
+        };
         if (canceled) return;
         setContent(payload.content ?? null);
+        setContentRevision(
+          typeof payload.revision === "number" && Number.isInteger(payload.revision)
+            ? payload.revision
+            : 0,
+        );
+        setConflictDetectionKey(
+          typeof payload.conflictDetectionKey === "string" && payload.conflictDetectionKey.trim()
+            ? payload.conflictDetectionKey
+            : `${documentId}:0`,
+        );
       } catch (error) {
         if (canceled) return;
         if ((error as { name?: string })?.name === "AbortError") return;
@@ -683,11 +711,17 @@ export function DocumentContent({
                 documentId={documentId}
                 workspaceId={workspaceId}
                 initialContent={content}
+                initialRevision={contentRevision}
+                initialConflictDetectionKey={conflictDetectionKey}
                 pageOptions={options}
                 readOnly={readOnly}
                 onStatsChange={handleStatsChange}
                 onSnapshot={handleSnapshot}
                 onCloseToc={closeToc}
+                onPersistedMetaChange={({ revision, conflictDetectionKey: nextConflictDetectionKey }) => {
+                  setContentRevision(revision);
+                  setConflictDetectionKey(nextConflictDetectionKey);
+                }}
               />
             )}
             <PageBacklinksPanel