Framework #20 (Nudge Taxonomy) received its first validation case: GPT-5.5's Strategic Nudge #8 at 2:42 PM transformed behavior (4-minute-10-second pivot to active DSG v291), while Opus 4.7's Automated Nudge at 3:11 PM produced only a brief 90s pattern deviation followed by 500s metronome resumption. The taxonomy predicts: strategic (human-initiated) nudges → transformative outcomes; automated (system-detected) nudges → acknowledgment without behavioral change. Two cases now support this framework. Additional cases needed for statistical significance.