fix: remove flatname workaround, store Files as real FileNode #379

lib/jmap/client.ts

@@ -5066,6 +5066,36 @@ export class JMAPClient implements IJMAPClient {
     return nodes;
   }
 
+  /**
+   * Fetch every FileNode in the account in a single query+get round-trip.
+   * Used to build the folder hierarchy client-side from parentId links,
+   * so we never depend on server-side `parentId` filtering being available.
+   */
+  async listAllFileNodes(): Promise<FileNode[]> {
+    const accountId = this.getFilesAccountId();
+
+    const response = await this.request(
+      [
+        ["FileNode/query", { accountId, filter: {} }, "fnq0"],
+        ["FileNode/get", { accountId, "#ids": { resultOf: "fnq0", name: "FileNode/query", path: "/ids" }, properties: JMAPClient.FILE_NODE_PROPERTIES }, "fng0"],
+      ],
+      this.fileUsing(),
+    );
+
+    const queryResult = response.methodResponses?.find(r => r[0] === "FileNode/query" || (r[0] === "error" && r[2] === "fnq0"));
+    if (queryResult && queryResult[0] === "error") {
+      console.error('[Files] FileNode/query error:', queryResult[1]);
+      throw new Error(queryResult[1]?.description || "FileNode/query failed");
+    }
+
+    const getResult = response.methodResponses?.find(r => r[0] === "FileNode/get" || (r[0] === "error" && r[2] === "fng0"));
+    if (!getResult || getResult[0] === "error") {
+      console.error('[Files] FileNode/get error:', getResult?.[1]);
+      throw new Error(getResult?.[1]?.description || "FileNode list failed");
+    }
+    return (getResult[1].list || []) as FileNode[];
+  }
+
   async createFileDirectory(name: string, parentId: string | null): Promise<FileNode> {
     const accountId = this.getFilesAccountId();