Record two successful private ZeroGPU grounding checks

README.md

@@ -22,8 +22,8 @@ interaction targets. Choose a task, provide an image and a prompt, then inspect
 the model's predictions directly on the image.
 
 Model: [XPENG-AI/GroundingPI-4B](https://huggingface.co/XPENG-AI/GroundingPI-4B).
-This private preview is hosted at `FanLR/GroundingPI-4B`. HF ZeroGPU inference
-acceptance remains pending. Licensing and asset permissions are pending:
+This private preview is hosted at `FanLR/GroundingPI-4B`. Two real HF ZeroGPU grounding requests passed on 2026-09-16; full task coverage
+remains pending. Licensing and asset permissions are pending:
 see [license status](LICENSE_PENDING.md).
 
 ## Explore visual evidence
@@ -95,8 +95,9 @@ See [runtime design](docs/ZEROGPU_DEPLOYMENT.md).
 
 The existing PPU implementation has completed real generation and UI checks.
 This package includes automated regressions for prompts, parsing, stale-result
-clearing, error recovery and overlay geometry. **NVIDIA / HF ZeroGPU acceptance
-remains pending.** See [verification](docs/VERIFICATION.md).
+clearing, error recovery and overlay geometry. **Two private HF ZeroGPU grounding smoke checks passed on 2026-09-16.**
+See [the smoke-check receipt](docs/HF_PRIVATE_SMOKE.md). Full route coverage and
+benchmark accuracy remain unverified. See [verification](docs/VERIFICATION.md).
 
 The default queue is single-concurrency with at most eight waiting requests.
 Uploads are limited to 30 MiB / 50 megapixels, and input plus output to 8,192 tokens.

docs/HF_PRIVATE_SMOKE.md

@@ -0,0 +1,17 @@
+# Private HF ZeroGPU smoke checks
+
+Verified on 2026-09-16 against model commit `9dd5c58abb69e87a9c8aa59865ed6bec944026ed`.
+The model and Space remained private. Two sequential requests used the same
+image from the third grounding example, with different user queries. Only
+the image and query entered inference; no expected answer was supplied.
+
+| Query | Generated box (0–999) | Demo-reported inference time |
+| --- | --- | --- |
+| Person | 463, 270, 888, 997 | 6.46 s |
+| Keyboard | 362, 615, 571, 739 | 0.58 s |
+
+Both requests reached EOS, passed native GAM parsing, and returned rendered
+image overlays. The boxes were visually checked against the input image.
+Reported times are individual observations and exclude the local client network
+overhead; they are not a throughput benchmark. These checks cover basic
+grounding only. Other routes and benchmark accuracy remain unverified.