Fix dsfb-gpu Colab receipt guard

Remove the literal placeholder token from the populated Colab receipt so the final ZIP guard passes after receipt substitution. Refresh the built-in source bundle and manifest hash.

Author: infinityabundance

crates/dsfb-gpu/ARTIFACT_MANIFEST.v1.toml

@@ -84,7 +84,7 @@ role = "A6.1 post-Nsight receipt: detector_motif_fused_d64_kernel 1,324,608 -> 9
 
 [[artifact]]
 path = "notebooks/dsfb_gpu_debug_colab.ipynb"
-sha256 = "90d7a85b6065a4985818a8ac1e244cb8cae6b1f6d9e1743ac5a467f91c148a38"
+sha256 = "113c6bbb8be73cdfde1030dd7ffe77be118a2db00d04ecc3726a7ab89a0615bb"
 kind = "public-replay-notebook"
 role = "Public Colab replay surface (COLAB.S-REAL.1). Downloads the built-in source bundle from the GitHub main branch, rebuilds the CUDA path from source on a free Colab GPU runtime, re-runs the 20-dataset audit, and emits a downloadable ZIP with the plan-locked A-F verdict. PENDING-guard cell at position 19 prevents downloading with unpopulated gates."
 

crates/dsfb-gpu/notebooks/dsfb-gpu.tar.gz

@@ -708,9 +708,9 @@
     "\n",
     "This receipt was populated by the notebook's PENDING-guard cell after\n",
     "the §7 A-F classification verdict was computed. The packer\n",
-    "(`scripts/package_s_real_colab_outputs.sh`) emitted the skeleton with\n",
-    "`<PENDING>` markers; the notebook substituted the populated body\n",
-    "before inviting the operator to download.\n",
+    "(`scripts/package_s_real_colab_outputs.sh`) emitted a placeholder\n",
+    "skeleton; the notebook substituted the populated body before inviting\n",
+    "the operator to download.\n",
     "\n",
     "## Honest framing (panel-locked verbatim)\n",
     "\n",