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/transport/convex.rs

@@ -417,11 +417,13 @@ fn convex_command_args_for_plan(plan: &RuntimeCommandExecutionPlan) -> Value {
             | "tree.node.rename"
             | "tree.node.archive"
             | "tree.node.restore"
+            | "tree.node.purge"
             | "tree.subtree.move"
             | "documents.create"
             | "documents.title.update"
             | "documents.delete"
             | "documents.restore"
+            | "documents.purge"
             | "documents.move"
     ) {
         strip_tree_artifact_fields(&mut args);
@@ -546,6 +548,7 @@ fn strip_tree_artifact_fields(args: &mut Value) {
         map.remove("domainEventHint");
         map.remove("domainEventPlan");
         map.remove("domainEventPlans");
+        map.remove("commandProtocol");
     }
 }
 
@@ -930,6 +933,7 @@ mod tests {
             legacy_next_base_url: Some("http://127.0.0.1:3100".into()),
             enable_legacy_next_compat: true,
             enable_debug_shell_routes: false,
+            enable_editor_actor: true,
             hermes_base_path: "/api/hermes".into(),
             compat_next_base_path: "/api/compat/next".into(),
             convex_url: Some("http://127.0.0.1:3210".into()),
@@ -1084,14 +1088,15 @@ mod tests {
             idempotency_key: None,
             source: json!({}),
             payload_json: "{}".into(),
-            args_json: json!({
-                "id": "doc_1",
-                "streamDeltaHint": {"family": "tree", "kind": "remove_document"},
-                "domainEventHint": {"eventType": "tree.node.archived"},
-                "domainEventPlan": {"eventType": "tree.node.archived"},
-                "domainEventPlans": [{"eventType": "tree.node.archived"}],
-            }),
-        };
+	            args_json: json!({
+	                "id": "doc_1",
+	                "streamDeltaHint": {"family": "tree", "kind": "remove_document"},
+	                "domainEventHint": {"eventType": "tree.node.archived"},
+	                "domainEventPlan": {"eventType": "tree.node.archived"},
+	                "domainEventPlans": [{"eventType": "tree.node.archived"}],
+	                "commandProtocol": {"family": "tree"},
+	            }),
+	        };
 
         let args = convex_command_args_for_plan(&plan);
 
@@ -1103,6 +1108,30 @@ mod tests {
         );
     }
 
+    #[test]
+    fn convex_command_args_strips_tree_purge_artifacts_for_legacy_mutation() {
+        let plan = RuntimeCommandExecutionPlan {
+            command_name: "tree.node.purge".into(),
+            command_id: "cmd_purge_1".into(),
+            function_name: "documents:purge".into(),
+            workspace_id: Some("ws_1".into()),
+            request_id: "req_1".into(),
+            trace_id: "trace_1".into(),
+            actor_id: "actor_1".into(),
+            idempotency_key: None,
+            source: json!({}),
+            payload_json: "{}".into(),
+            args_json: json!({
+                "id": "doc_1",
+                "commandProtocol": {"family": "tree"},
+            }),
+        };
+
+        let args = convex_command_args_for_plan(&plan);
+
+        assert_eq!(args, json!({ "id": "doc_1" }));
+    }
+
     #[test]
     fn convex_resource_lifecycle_args_keep_effective_user_id() {
         let plan = RuntimeCommandExecutionPlan {