Clarify paired Real1 environment-style failure in block diagnostic cohort

s1_blocks_seq343_real2_real1palette_headrepaired40_20261009/QUALITY_NOTICE.md

@@ -10,3 +10,9 @@ are conditioned on paired Real1 and pass the full-frame color/context audit.
 Visual non-regression was reviewed on sampled frames, not certified on every
 frame. `training_release=false` remains intentional. Do not treat this
 diagnostic upload as fully human-reviewed training data.
+
+Subsequent direct paired-Real1 environment-style review found that at least
+case `stack_blocks_ep000000` fails (GPT-6 Luna confidence 0.98): the Real2
+table is olive/mottled while Real1's is pale and neutral. The earlier 40/40
+acceptance did not include this style criterion. This prefix is **not
+Real1-style-approved** and must not be used as final Real2 training data.