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/public/onlyoffice/plugins/agent-tools/plugin.js

@@ -2,6 +2,8 @@
 // 宿主页面通过 postMessage 下发 oo_* 工具调用；插件执行后再 postMessage 回传结果。
 (function () {
   const CHANNEL = "mnote_onlyoffice_agent_tools_v1";
+  let readyPulseTimer = null;
+  let readyPulseDeadline = 0;
 
   const safePostToTop = (payload) => {
     try {
@@ -13,6 +15,50 @@
     }
   };
 
+  const isPluginApiReady = () =>
+    Boolean(window.Asc && window.Asc.plugin && typeof window.Asc.plugin.executeMethod === "function");
+
+  const stopReadyPulse = () => {
+    if (readyPulseTimer) {
+      window.clearInterval(readyPulseTimer);
+      readyPulseTimer = null;
+    }
+    readyPulseDeadline = 0;
+  };
+
+  const startReadyPulse = () => {
+    if (readyPulseTimer) return;
+    readyPulseDeadline = Date.now() + 20_000;
+    safePostToTop({ type: "ready" });
+    readyPulseTimer = window.setInterval(() => {
+      if (Date.now() > readyPulseDeadline) {
+        stopReadyPulse();
+        return;
+      }
+      safePostToTop({ type: "ready" });
+    }, 1000);
+  };
+
+  const waitForPluginApiReady = () => {
+    if (isPluginApiReady()) {
+      startReadyPulse();
+      return;
+    }
+
+    const deadline = Date.now() + 60_000;
+    const timer = window.setInterval(() => {
+      if (isPluginApiReady()) {
+        window.clearInterval(timer);
+        startReadyPulse();
+        return;
+      }
+      if (Date.now() > deadline) {
+        window.clearInterval(timer);
+        safePostToTop({ type: "result", callId: "bridge_bootstrap", ok: false, error: "ONLYOFFICE 插件 API 长时间未就绪" });
+      }
+    }, 500);
+  };
+
   const execMethod = (method, args) =>
     new Promise((resolve, reject) => {
       try {
@@ -74,15 +120,19 @@
   window.Asc.plugin = window.Asc.plugin || {};
 
   window.Asc.plugin.init = function () {
-    safePostToTop({ type: "ready" });
+    startReadyPulse();
   };
 
+  waitForPluginApiReady();
+
   window.addEventListener("message", async (ev) => {
     const msg = ev && ev.data ? ev.data : null;
     if (!msg || typeof msg !== "object") return;
     if (msg.channel !== CHANNEL) return;
     if (msg.type !== "call") return;
 
+    stopReadyPulse();
+
     const callId = String(msg.callId ?? "").trim();
     const tool = String(msg.tool ?? "").trim();
     const args = msg.args && typeof msg.args === "object" ? msg.args : {};
@@ -97,4 +147,3 @@
     }
   });
 })();
-