feat: EditorRuntimeActor - 三层缓存/delta/事件架构

Phase A — EditorRuntimeActor 内存缓存层
- 新增 editor_actor.rs: EditorBlockDocument 内存态 + apply_command + load_or_init
- block.rs 四个写工具（replace/insert/delete/move）接入 actor 路径
- editor_actor feature flag（MNOTE_WEB_ENABLE_EDITOR_ACTOR=true 默认开启）
- bridge-runtime 三个核心函数公开化
- rust-toolchain: 1.89 → stable（修复 spike WASM 编译阻塞）

Phase B — 编辑器增量 delta channel
- BlockDelta/DeltaOperation 类型 + actor.build_block_delta()
- leptos-tiptap spike: mnote:editor:block-delta CustomEvent 监听 + JSON patch
- DocumentAiAgentPanel: 拦截 blockDelta → window dispatchEvent
- 工具响应含 blockDelta 字段供前端消费

Phase C — 事件 stream delta
- broadcast channel 在 AppState/actor/SSE 三层贯通
- tree_events SSE 端点发 block.delta 事件
- 旧客户端降级兼容

环境修复
- rustc recursion_limit = 1024（修复 Leptos SSR 类型深度溢出）
- run-convex-deploy.js（封装 Convex function 部署到本地后端 3210）

ref: design/07-ai/process/7-13-page-block-editor-runtime-actor-v1.md

scripts/task123-rust-web-tree-live-stream-consumer-smoke.js

@@ -13,6 +13,18 @@ async function fetchText(path) {
   return { response, text };
 }
 
+function parseSseEventData(text, eventName) {
+  const blocks = text.split(/\n\n+/).filter((block) => block.trim().length > 0);
+  const block = blocks.find((candidate) => new RegExp(`^event:\\s*${eventName}\\s*$`, "m").test(candidate));
+  assert(block, `SSE 响应缺少 ${eventName} 事件`);
+  const dataLines = block
+    .split(/\n/)
+    .filter((line) => line.startsWith("data:"))
+    .map((line) => line.slice("data:".length).trimStart());
+  assert(dataLines.length > 0, `${eventName} 事件缺少 data`);
+  return JSON.parse(dataLines.join("\n"));
+}
+
 async function readJsonResponse(response, label) {
   const text = await response.text();
   let payload = null;
@@ -77,7 +89,40 @@ async function main() {
     assert.match(events.text, /id:\s*/);
     assert.match(events.text, /"revision"/);
 
-    console.log(JSON.stringify({ ok: true, owner: "rust-web", stream: "/api/tree/events", documentId: pageTarget.documentId }, null, 2));
+    const snapshot = parseSseEventData(events.text, "snapshot");
+    assert.equal(snapshot.kind, "snapshot");
+    assert.equal(snapshot.stream, "workspace");
+    assert.equal(snapshot.projection, "sidebar_tree");
+    assert.equal(snapshot.workspaceId, pageTarget.workspaceId);
+    const dataset = snapshot.data?.dataset || snapshot.data;
+    assert(dataset?.kernel_sidebar_projection, "snapshot 缺少 kernel_sidebar_projection");
+    assert(dataset?.kernel_file_tree_projection, "snapshot 缺少 kernel_file_tree_projection");
+    const fileTreeItems = dataset.kernel_file_tree_projection.items || [];
+    assert(
+      fileTreeItems.some(
+        (item) =>
+          (item?.rowId || item?.row_id) === `doc:${pageTarget.documentId}` &&
+          (item?.rowKind || item?.row_kind) === "document" &&
+          (item?.resourceMeta?.documentId || item?.resource_meta?.document_id) ===
+            pageTarget.documentId,
+      ),
+      "workspace snapshot 的 file tree projection 缺少临时页 doc row",
+    );
+
+    console.log(
+      JSON.stringify(
+        {
+          ok: true,
+          owner: "rust-web",
+          stream: "/api/tree/events",
+          documentId: pageTarget.documentId,
+          snapshotProjection: snapshot.projection,
+          fileTreeRows: fileTreeItems.length,
+        },
+        null,
+        2,
+      ),
+    );
   } finally {
     await purgeTempPage(pageTarget).catch(() => undefined);
   }