Correct source classifier activation schema

.github/workflows/publish-source-classify-hf.yml

@@ -12,7 +12,7 @@ on:
       weights_tag:
         description: "GitHub Release tag holding source-pipeline-mlp.npz"
         required: true
-        default: source-classify-freeze-2026-09-16
+        default: source-classify-freeze-2026-09-16-r2
 
 jobs:
   publish:

docs/source-classify-hf/README.md

@@ -28,7 +28,7 @@ provider label does not prove that SynthID is present.
 - Output: `openai`, `google`, or abstain as `unknown` using independent
   provider margins.
 - Artifact: `source-pipeline-mlp.npz`
-- SHA-256: `0df4c644d02616265d083dbd3204e4dc617f7133b94af0eb0dc59d5362189290`
+- SHA-256: `6430b0738869ff07b6845b7c6149c2a83bc3f3785878082886c241c6f7ca0c4a`
 
 The artifact contains only learned parameters, normalization constants,
 labels, and thresholds. It does not contain training images, paths, image

docs/source-classify-hf/metrics.json

@@ -1,6 +1,6 @@
 {
   "claim": "abstaining OpenAI/Google source-pipeline classification; not SynthID detection",
-  "artifact_sha256": "0df4c644d02616265d083dbd3204e4dc617f7133b94af0eb0dc59d5362189290",
+  "artifact_sha256": "6430b0738869ff07b6845b7c6149c2a83bc3f3785878082886c241c6f7ca0c4a",
   "classes": ["openai", "google", "unknown"],
   "locked_internal_test": {
     "n": 5369,