Attribute optional referrals and record hosted checks

README.md

@@ -63,7 +63,7 @@ as a local `file:` URL is not the supported preview path.
 - The unsafe reshape demonstration uses the original feature map before any
   adaptive pool and the original 128-feature head.
 
-For real model exploration, [tensorViz's recorded browser examples](https://tensorviz.dev/explore/)
+For real model exploration, [tensorViz's recorded browser examples](https://tensorviz.dev/explore/?utm_source=huggingface&utm_medium=referral&utm_campaign=shape_lab_202610&utm_content=shape_lab_recorded_models)
 are an optional next step. Capturing your own PyTorch model requires the separate
 tensorViz extension and your model environment. This repository contains only
 the lesson, not extension implementation.

VALIDATION.md

@@ -66,3 +66,40 @@ flatten, explicit adaptive-pooling semantics, unsafe-reshape sample-count warnin
 and distinction between this lesson and actual tensorViz model capture. The code
 adds no runtime fetch or tracking, and the footer limits its claim to calculations
 staying in the reader's browser.
+
+## Hosted verification and optional referral link — October 11, 2026
+
+The public [Hugging Face Space](https://huggingface.co/spaces/tensorviz-org/pytorch-shape-lab)
+was published through merged PR #1 at source commit
+`853be1018ddda93bd5866c07df5ab1f65f2b76d3`. All 11 uploaded files matched the
+checked local bytes, including the materialized logo stored through Git LFS.
+A hosted desktop check confirmed the default `512 ≠ 128` mismatch and switching
+to the fixed 512-feature head to produce the calculated shape `[2,5]`.
+These are arithmetic interactions, not model execution in the browser.
+
+A hosted **390 × 844** mobile check also passed: the iframe and outer document
+both measured 390 pixels wide without page overflow, the controls were readable,
+and selecting 16 × 20 changed the fixed 512-feature head to `640 ≠ 512`.
+The screenshot is `tensorviz-huggingface-shape-lab-mobile-2026-10-11.png`.
+No lesson-origin error was identified. An earlier unattributed host-page error
+preceded the live app; this is not a clean-console claim for Hugging Face's
+hosting interface.
+
+The optional recorded-model link in the lesson and README now uses this URL,
+without changing its visible label:
+
+<https://tensorviz.dev/explore/?utm_source=huggingface&utm_medium=referral&utm_campaign=shape_lab_202610&utm_content=shape_lab_recorded_models>
+
+These query parameters label visits that follow the link for the website's
+existing attribution reporting. They add no tracking code, runtime request,
+cookie or analytics event to the lesson. Both locations share the same campaign
+tag, so it does not distinguish a lesson click from a README click. Copied links,
+blocked analytics and reporting delays also limit attribution. A tagged visit
+is not proof of a Marketplace install, product activation or conversion; no such
+outcome was measured by this change.
+
+Local validation checked that both links resolve to the same exact URL and four
+requested UTM values, that the HTML preserves its visible anchor text, and that
+no calculation code changed. The tagged-link update requires its own hosted
+publication and verification; the source commit above describes the preceding
+published version.

index.html

@@ -93,7 +93,7 @@
       <p>Matching shapes only makes these operations compatible. It does not establish prediction quality or numerical equivalence.</p>
       <div class="resource-links">
         <a href="https://github.com/tensorviz-org/tensorviz-examples/blob/1baecebf25ff1067a9112bde382c0a398fb99747/examples/shape-mismatch/README.md">Read and run the PyTorch example</a>
-        <a href="https://tensorviz.dev/explore/">Explore recorded models in tensorViz</a>
+        <a href="https://tensorviz.dev/explore/?utm_source=huggingface&amp;utm_medium=referral&amp;utm_campaign=shape_lab_202610&amp;utm_content=shape_lab_recorded_models">Explore recorded models in tensorViz</a>
       </div>
     </section>
     <footer>Made by tensorViz with AI assistance. Original lesson code is MIT licensed. Calculations stay in your browser.</footer>