Bounded GA-R4 close summary + machine-derived reseed (SEC 10->12: SEC-015/-016);
G14 SEC-row count reconciled to 12. dc1 substrate built + commissioned 9/9,
merged to main (a5c0a49), branch retired. Full body in the archived changelog.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUjEb7onHpdqFHUnio6iVw