- Add Anthropic API support to decomposition Pass 0a/0b (prompt caching, content batching)
- Add Anthropic Batch API (50% cost reduction, async 24h processing)
- Add source_filter (ILIKE on source_citation) for regulation-based filtering
- Add category_filter to Pass 0a for selective decomposition
- Add regulation_filter to control_generator for RAG scan phase filtering
(prefix match on regulation_code — enables CE + Code Review focus)
- New API endpoints: batch-submit-0a, batch-submit-0b, batch-status, batch-process
- 83 new tests (all passing)
Cost reduction: $2,525 → ~$600-700 with all optimizations combined.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>