Two-stage architecture: sonnet-4.6 pre-gen batch for rich identities,
haiku-4.5 for live dialog. Replaces static pools + 9-model routing +
scoring/weighting scaffolding. Introduces tiered regulars system with
Silas as canonical (lore in Obsidian vault) and hard-gated arc regulars.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
