Fix BASE_URL resolution: registry key renamed to OV_LIVE_URL; accept env fallback

ddiff --git a/server/config.js b/server/config.js
iindex 22e49bb9..ed5d0e5b 100644
---- a/server/config.js
++++ b/server/config.js
@@@ -70,7 +70,10 @@ function buildConfig(registryValues) {
          return entry && typeof entry === 'object' ? entry : { value: null, source: 'default' };
      };
  
--    const baseEntry = getRegistryEntry('BASE_URL');
++    // Registry renamed this key from BASE_URL to OV_LIVE_URL; accept both plus the env var.
++    let baseEntry = getRegistryEntry('OV_LIVE_URL');
++    if (baseEntry.source === 'default') baseEntry = getRegistryEntry('BASE_URL');
++    if (baseEntry.source === 'default' && process.env.BASE_URL) baseEntry = { value: process.env.BASE_URL, source: 'env' };
      const whipEntry = getRegistryEntry('WHIP_PUBLIC_URL');
      const webRtcEntry = getRegistryEntry('WEBRTC_PUBLIC_URL');
      const jsmpegEntry = getRegistryEntry('JSMPEG_PUBLIC_URL');