fix: preserve discord inbound media filenames

extensions/discord/src/monitor/message-media.ts

@@ -295,6 +295,7 @@ async function appendResolvedMediaFromAttachments(params: {
         fetched.contentType ?? attachment.content_type,
         "inbound",
         params.maxBytes,
+        attachment.filename,
       );
       params.out.push({
         path: saved.path,
@@ -402,6 +403,7 @@ async function appendResolvedMediaFromStickers(params: {
           fetched.contentType,
           "inbound",
           params.maxBytes,
+          candidate.fileName,
         );
         params.out.push({
           path: saved.path,

extensions/discord/src/monitor/message-utils.test.ts

@@ -94,7 +94,13 @@ function expectSinglePngDownload(params: {
   });
   expectDiscordCdnSsrFPolicy(call.ssrfPolicy);
   expect(saveMediaBuffer).toHaveBeenCalledTimes(1);
-  expect(saveMediaBuffer).toHaveBeenCalledWith(expect.any(Buffer), "image/png", "inbound", 512);
+  expect(saveMediaBuffer).toHaveBeenCalledWith(
+    expect.any(Buffer),
+    "image/png",
+    "inbound",
+    512,
+    params.filePathHint,
+  );
   expect(params.result).toEqual([
     {
       path: params.expectedPath,