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Path A spine COMPLETE (14/14): Backlog SL-3 blocker cleared + marked done; Path_to_Fun END-2 done + banner; Milestones END-2 row. CLAUDE.md gains the END-2 gotcha line (replicate the outcome, don't client-derive; SiegeTimeout off during the final), net-zero via EB-1/EB-2/END-1/M7/inventory/build-grid condensations (40,445 then 40,510 w/ history note, under the 40,960 limit). DR-036 + session log capture the design, the operator forks (halt+banner, Target=4, SaveData v5), and the pre-coding + post-impl adversarial reviews. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>