test(matrix): update originalFilename coverage

CHANGELOG.md

@@ -93,6 +93,7 @@ Docs: https://docs.openclaw.ai
 - Memory/search: share memory embedding provider registrations across split plugin runtimes so memory search no longer fails with unknown provider errors after memory-core registers built-in adapters. (#55945) Thanks @glitch418x.
 - Discord/Carbon beta: update `@buape/carbon` to the latest beta and pass the new `RateLimitError` request argument so Discord stays compatible with the upstream beta constructor change. (#55980) Thanks @ngutman.
 - Plugins/inbound claims: pass full inbound attachment arrays through `inbound_claim` hook metadata while keeping the legacy singular media attachment fields for compatibility. (#55452) Thanks @huntharo.
+- Plugins/Matrix: preserve sender filenames for inbound media by forwarding `originalFilename` to `saveMediaBuffer`. (#55692) thanks @esrehmki.
 
 ## 2026.3.24
 

extensions/matrix/src/matrix/monitor/media.test.ts

@@ -71,6 +71,7 @@ describe("downloadMatrixMedia", () => {
       "image/png",
       "inbound",
       1024,
+      undefined,
     );
     expect(result?.path).toBe("/tmp/media");
   });