Skip cache-buster query for Dropbox stream URLs

client/public/version.js

@@ -1,5 +1,5 @@
 // Maintainer-controlled web client version.
 // Format: YYYY.MM.DD Rn (example: 2026.02.20 R2)
-window.CHGRID_WEB_VERSION = "2026.02.22 R136";
+window.CHGRID_WEB_VERSION = "2026.02.22 R137";
 // Optional display timezone for timestamps. Falls back to America/Detroit if unset/invalid.
 window.CHGRID_TIME_ZONE = "America/Detroit";

client/src/audio/radioStationRuntime.ts

@@ -109,6 +109,15 @@ function connectRadioChannelSource(
 }
 
 function freshStreamUrl(streamUrl: string): string {
+  try {
+    const parsed = new URL(streamUrl);
+    const hostname = parsed.hostname.toLowerCase();
+    if (hostname.endsWith('dropbox.com') || hostname.endsWith('dropboxusercontent.com')) {
+      return streamUrl;
+    }
+  } catch {
+    // Leave non-URL strings to the generic cache-buster behavior below.
+  }
   const separator = streamUrl.includes('?') ? '&' : '?';
   return `${streamUrl}${separator}chgrid_start=${Date.now()}`;
 }