rejection_reason was always NULL in review_records — now populated with
comma-joined issue tags (near_duplicate, frontmatter_schema, etc.) at both
rejection call sites. Also fixes stale reviewer_model="gpt-4o" hardcoding
to use config.EVAL_DOMAIN_MODEL (currently Gemini Flash).
Ingestion branches (ingestion/futardio-*, ingestion/metadao-*) now resolve
to internet-finance domain instead of falling through to "general".
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>