fix(hub): send Feishu files explicitly

hub/src/feishu/client.ts

@@ -60,14 +60,14 @@ export interface CardActionEvent {
 export async function sendTextMessage(rt: FeishuRuntime, chatId: string, text: string): Promise<string | null> {
   const card = { elements: [{ tag: "div", text: { tag: "lark_md", content: text } }] };
   const client = rt.client as unknown as {
-    im: { v1: { message: { create: (p: unknown) => Promise<{ data?: { message_id?: string } }> } } };
+    im: { v1: { message: { create: (p: unknown) => Promise<MessageCreateResponse> } } };
   };
   try {
     const res = await client.im.v1.message.create({
       params: { receive_id_type: "chat_id" },
       data: { receive_id: chatId, msg_type: "interactive", content: JSON.stringify(card) },
     });
-    return res.data?.message_id ?? null;
+    return messageIdFromResponse(res);
   } catch { return null; }
 }
 
@@ -133,8 +133,8 @@ export async function downloadMessageFile(
 export async function sendFile(rt: FeishuRuntime, chatId: string, filePath: string, fileName: string): Promise<string | null> {
   const client = rt.client as unknown as {
     im: { v1: {
-      file: { create: (p: unknown) => Promise<{ data?: { file_key?: string } }> }
-      message: { create: (p: unknown) => Promise<{ data?: { message_id?: string } }> }
+      file: { create: (p: unknown) => Promise<FileCreateResponse> }
+      message: { create: (p: unknown) => Promise<MessageCreateResponse> }
     } };
   };
   try {
@@ -142,19 +142,44 @@ export async function sendFile(rt: FeishuRuntime, chatId: string, filePath: stri
     const ext = fileName.split(".").pop() ?? "";
     const fileType = ext === "pdf" ? "pdf" : ext === "doc" ? "doc" : ext === "xls" ? "xls" : ext === "ppt" ? "ppt" : "stream";
     const uploadRes = await client.im.v1.file.create({ data: { file_type: fileType, file_name: fileName, file: buf } });
-    const fileKey = uploadRes.data?.file_key;
-    if (fileKey === undefined) return null;
+    const fileKey = fileKeyFromResponse(uploadRes);
+    if (fileKey === undefined) {
+      rt.logger.warn({ chatId, filePath }, "sendFile failed: upload response missing file_key");
+      return null;
+    }
     const msgRes = await client.im.v1.message.create({
       params: { receive_id_type: "chat_id" },
       data: { receive_id: chatId, msg_type: "file", content: JSON.stringify({ file_key: fileKey }) },
     });
-    return msgRes.data?.message_id ?? null;
+    const messageId = messageIdFromResponse(msgRes);
+    if (messageId === null) {
+      rt.logger.warn({ chatId, filePath }, "sendFile failed: message response missing message_id");
+    }
+    return messageId;
   } catch (e) {
     rt.logger.warn({ chatId, filePath, err: e instanceof Error ? e.message : String(e) }, "sendFile failed");
     return null;
   }
 }
 
+type MessageCreateResponse = {
+  readonly message_id?: string | undefined;
+  readonly data?: { readonly message_id?: string | undefined } | undefined;
+} | null;
+
+type FileCreateResponse = {
+  readonly file_key?: string | undefined;
+  readonly data?: { readonly file_key?: string | undefined } | undefined;
+} | null;
+
+function messageIdFromResponse(res: MessageCreateResponse): string | null {
+  return res?.data?.message_id ?? res?.message_id ?? null;
+}
+
+function fileKeyFromResponse(res: FileCreateResponse): string | undefined {
+  return res?.file_key ?? res?.data?.file_key;
+}
+
 // --- Lark client + ws listener ---
 
 export function createLarkClient(config: FeishuConfig): lark.Client {