fix(media): decode remote URL fallback filenames

CHANGELOG.md

@@ -17,7 +17,7 @@ Docs: https://docs.openclaw.ai
 - Agents/subagents: recover stale completion announces by retrying unsupported transcript-wait wakes without transcript waiting and forcing a message-tool handoff when the requester run is already stale. Fixes #83699. (#83700) Thanks @galiniliev.
 - Agents/subagents: skip stale embedded-run wake probes for dormant completion requesters, so late subagent completions go straight to requester-agent/direct handoff instead of producing `reason=no_active_run` queue noise. (#82964) Thanks @galiniliev.
 - CLI: retry config snapshot reads after a transient failure so one rejected read no longer poisons later commands in the same process. (#83931) Thanks @honor2030.
-- Media: decode URL path basenames before using them as remote media fallback filenames, so files like `My%20Report.pdf` are surfaced as `My Report.pdf`. Fixes #84050.
+- Media: decode URL path basenames before using them as remote media fallback filenames, so files like `My%20Report.pdf` are surfaced as `My Report.pdf`. Fixes #84050. (#84052) Thanks @jbetala7.
 - WhatsApp: clarify inbound group diagnostics so observed but unregistered groups point to `channels.whatsapp.groups` without changing routing or sender authorization. (#83846) Thanks @neeravmakwana.
 - WhatsApp: drain pending outbound deliveries on a 30s periodic timer in addition to the reconnect handler, so messages enqueued while the provider is already connected no longer wait for the next reconnect to send. (#79083) Thanks @Oviemudiaga.
 - CLI/TUI: include gateway plugin slash commands in TUI autocomplete, so connected sessions can suggest plugin-owned commands exposed by the running Gateway. (#83640) Thanks @se7en-agent.

src/media/fetch.test.ts

@@ -624,6 +624,7 @@ describe("readRemoteMediaBuffer", () => {
   it.each([
     ["https://example.com/files/reports%2FQ1.pdf", "reports_Q1.pdf"],
     ["https://example.com/files/reports%5CQ1.pdf", "reports_Q1.pdf"],
+    ["https://example.com/files/reports%2F%2FQ1.pdf", "reports__Q1.pdf"],
   ])(
     "keeps decoded URL fallback separators inside the selected basename",
     async (url, fileName) => {

src/media/fetch.ts

@@ -135,7 +135,7 @@ function basenameFromUrlPathname(pathname: string): string {
     return "";
   }
   try {
-    return decodeURIComponent(base).replace(/[\\/]+/g, "_");
+    return decodeURIComponent(base).replace(/[\\/]/g, "_");
   } catch {
     return base;
   }