feat: add 7-stage control generator pipeline with 3 license rules
- control_generator.py: RAG→License→Structure/Reform→Harmonize→Anchor→Store→Mark pipeline
with Anthropic Claude API (primary) + Ollama fallback for LLM reformulation
- anchor_finder.py: RAG-based + DuckDuckGo anchor search for open references
- control_generator_routes.py: REST API for generate, job status, review queue, processed stats
- 046_control_generator.sql: job tracking, chunk tracking, blocked sources tables;
extends canonical_controls with license_rule, source_original_text, source_citation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>