lukeandClaude Opus 4.6
1c7ac334b4
Previously _build_backgrounds ran two parallel Sonnet calls of 6 callers each, with zero cross-batch awareness. Each batch independently gravitated to the same quirky archetypes (Coast to Coast weirdos, specific hobbies) and produced clustered rosters — one recent show had two BBQ competitors, two taxidermists, and two conspiracy-pattern callers across 10 slots. Collapses to a single Sonnet call generating all 10 at once so the model can self-diversify across the full roster. The BATCH_SYSTEM_PROMPT also gets an explicit ANTI-COLLISION RULE with concrete forbidden examples (no two BBQ competitors, no two taxidermists, no two mystery- signal callers, etc.) and an instruction to scan output for collisions before finalizing. max_tokens bumped 8000 -> 16000 to accommodate the larger response. Wall-clock cost: ~30s -> ~60s, acceptable for the diversity gain. Verified on a fresh reset: 10 fully differentiated callers, zero archetype collisions. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>