Decouple deterministic smoke from GPU quota

README.md

@@ -61,7 +61,8 @@ consistency signal, not a geometric accuracy score. It also reports relative
 depth reprojection error, comparing the fused raster with each input depth map.
 For troubleshooting, the UI includes an explicitly labeled deterministic export
 smoke test that bypasses model inference and exercises the complete artifact
-pipeline on CPU.
+pipeline on CPU. Its public handler also bypasses the `spaces.GPU` quota
+boundary, so it remains useful when ZeroGPU inference credits are exhausted.
 The reproducibility manifest includes the app/schema version, an explicit
 provenance claims contract, software
 versions, SHA-256 fingerprints for every input and exported artifact, and