feat: 收口 mindmap Phase 6 Leptos UI shell

wolai-frontend/src/components/editor/leptos-tiptap-island-editor-host.tsx

@@ -39,8 +39,21 @@ type IslandRuntimeModule = {
   default: (input?: RequestInfo | URL | Response | BufferSource | WebAssembly.Module) => Promise<unknown>;
   mount: (container: Element, options: unknown) => number;
   unmount: (mountId: number) => void;
+  mount_mindmap_shell?: (container: Element, options: unknown) => number;
+  unmount_mindmap_shell?: (mountId: number) => void;
 };
 
+type MindmapRustShellBridge = {
+  mount: (container: Element, options: unknown) => number;
+  unmount: (mountId: number) => void;
+};
+
+declare global {
+  interface Window {
+    __MNOTE_MINDMAP_RUST_SHELL__?: MindmapRustShellBridge;
+  }
+}
+
 type RuntimeEnvelope<T = unknown> = {
   protocol?: string;
   runtime?: string;
@@ -251,6 +264,15 @@ async function loadIslandRuntime(): Promise<{
     throw new Error("island entry 缺少 unmount 导出");
   }
   await runtimeModule.default(wasmAssetUrl ?? undefined);
+  if (
+    typeof runtimeModule.mount_mindmap_shell === "function" &&
+    typeof runtimeModule.unmount_mindmap_shell === "function"
+  ) {
+    window.__MNOTE_MINDMAP_RUST_SHELL__ = {
+      mount: runtimeModule.mount_mindmap_shell,
+      unmount: runtimeModule.unmount_mindmap_shell,
+    };
+  }
   return {
     runtimeModule,
     entryAssetUrl,
@@ -778,9 +800,6 @@ export function LeptosTiptapIslandEditorHost(props: DocumentEditorHostProps) {
           );
         }
       },
-      requestFallbackToBlockNote: () => {
-        requestFallback("explicit_fallback", "通过页面壳显式切回 BlockNote");
-      },
     };
     useEditorBridgeStore.getState().registerBridge(editorBridge);
     return () => {