fix: let agents download Feishu message resources

hub/src/feishu/trigger.ts

@@ -768,13 +768,14 @@ export function makeTriggerHandler(deps: TriggerDeps): TriggerHandler {
           select: { workspaceDir: true },
         });
         if (project === null) return;
-        await downloadPostMessageFiles({
+        const downloadedResources = await downloadPostMessageFiles({
           rt,
           msg,
           workspaceDir: project.workspaceDir,
           imageKeys: parsed.imageKeys,
           fileKeys: parsed.fileKeys,
         });
+        cleanPrompt = appendDownloadedResourcePaths(cleanPrompt, downloadedResources);
       }
     } else if (msg.message_type === "file" || msg.message_type === "image") {
       // Download the file/image to the workspace, build a prompt around it.
@@ -783,16 +784,23 @@ export function makeTriggerHandler(deps: TriggerDeps): TriggerHandler {
         select: { workspaceDir: true },
       });
       if (project === null) return;
+      let content: z.infer<typeof FileMessageContentSchema>;
       try {
-        const content = FileMessageContentSchema.parse(JSON.parse(msg.content));
-        const key = content.file_key ?? content.image_key ?? "";
-        if (key !== "") {
-          const fileName = `${msg.message_type}-${Date.now()}.${msg.message_type === "image" ? "png" : "bin"}`;
-          const savePath = `${project.workspaceDir}/.cph/inbox/${fileName}`;
-          await downloadMessageFile(rt, msg.message_id, key, savePath);
-          cleanPrompt = `用户发来一个文件: ${savePath}`;
-        }
-      } catch { return; }
+        content = FileMessageContentSchema.parse(JSON.parse(msg.content));
+      } catch (error) {
+        rt.logger.warn(
+          { err: error, messageId: msg.message_id, messageType: msg.message_type },
+          "feishu trigger: invalid file message content",
+        );
+        return;
+      }
+      const key = content.file_key ?? content.image_key ?? "";
+      if (key !== "") {
+        const fileName = `${msg.message_type}-${Date.now()}.${msg.message_type === "image" ? "png" : "bin"}`;
+        const savePath = `${project.workspaceDir}/.cph/inbox/${fileName}`;
+        await downloadMessageFile(rt, msg.message_id, key, savePath, msg.message_type);
+        cleanPrompt = `用户发来一个文件: ${savePath}`;
+      }
     }
     if (cleanPrompt === null) return;
     const runContext: TriggerRunContext = { msg, rt, chatId, projectId, senderOpenId, actor };
@@ -1282,22 +1290,43 @@ function escapeRegExp(value: string): string {
   return value.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
 }
 
+interface DownloadedMessageResource {
+  readonly resourceType: "image" | "file";
+  readonly path: string;
+}
+
 async function downloadPostMessageFiles(args: {
   readonly rt: FeishuRuntime;
   readonly msg: MessageReceiveEvent["message"];
   readonly workspaceDir: string;
   readonly imageKeys: readonly string[];
   readonly fileKeys: readonly string[];
-}): Promise<void> {
+}): Promise<readonly DownloadedMessageResource[]> {
   const timestamp = Date.now();
+  const downloadedResources: DownloadedMessageResource[] = [];
   for (const [index, imageKey] of args.imageKeys.entries()) {
     const savePath = `${args.workspaceDir}/.cph/inbox/post-image-${timestamp}-${index}.png`;
-    await downloadMessageFile(args.rt, args.msg.message_id, imageKey, savePath);
+    await downloadMessageFile(args.rt, args.msg.message_id, imageKey, savePath, "image");
+    downloadedResources.push({ resourceType: "image", path: savePath });
   }
   for (const [index, fileKey] of args.fileKeys.entries()) {
     const savePath = `${args.workspaceDir}/.cph/inbox/post-file-${timestamp}-${index}.bin`;
-    await downloadMessageFile(args.rt, args.msg.message_id, fileKey, savePath);
+    await downloadMessageFile(args.rt, args.msg.message_id, fileKey, savePath, "file");
+    downloadedResources.push({ resourceType: "file", path: savePath });
   }
+  return downloadedResources;
+}
+
+function appendDownloadedResourcePaths(
+  prompt: string,
+  resources: readonly DownloadedMessageResource[],
+): string {
+  if (resources.length === 0) return prompt;
+  const paths = resources.map((resource) => {
+    const label = resource.resourceType === "image" ? "图片" : "文件";
+    return `- ${label}: ${resource.path}`;
+  });
+  return `${prompt}\n\n消息附件已下载到项目工作区，可直接读取以下本地文件：\n${paths.join("\n")}`;
 }
 
 /**