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

rust/crates/mnote-web/src/routes/mod.rs

@@ -16,6 +16,7 @@ mod media;
 mod mindmap_api;
 mod mindmap_shell;
 mod onlyoffice;
+mod page_ai_workflow;
 mod query_support;
 mod resource_trash;
 mod search;
@@ -86,6 +87,10 @@ pub fn build_router(state: AppState) -> Router {
         .route("/api/auth/mnote-web-token", get(session::session))
         .route("/api/auth/session/refresh", post(session::refresh_session))
         .route("/api/ai-agent/run", post(compat::next_ai_agent_run))
+        .route(
+            "/api/page-ai/block-edit-workflow",
+            post(page_ai_workflow::block_edit_workflow),
+        )
         .route("/onlyoffice", get(onlyoffice::page))
         .route("/onlyoffice-server/{*path}", any(onlyoffice::server_proxy))
         .route("/cache/{*path}", any(onlyoffice::cache_proxy))
@@ -196,6 +201,7 @@ pub fn build_router(state: AppState) -> Router {
                 )
                 .route("/client/skills", get(hermes_client::list_skills))
                 .route("/client/skills/toggle", put(hermes_client::toggle_skill))
+                .route("/client/tools/toggle", put(hermes_client::toggle_tool))
                 .route("/client/runs", post(hermes_client::create_run))
                 .route(
                     "/client/sessions/{session_id}/queue/{queue_id}",
@@ -244,6 +250,7 @@ mod tests {
             legacy_next_base_url: Some("http://127.0.0.1:3100".into()),
             enable_legacy_next_compat: false,
             enable_debug_shell_routes,
+            enable_editor_actor: true,
             hermes_base_path: "/api/hermes".into(),
             compat_next_base_path: "/api/compat/next".into(),
             convex_url: None,