Final fixes for production-ready spec:
1. locations.location_type: Added 'owned'|'competitor' flag.
Competitors now inserted into locations (preserves FK integrity).
2. Competitor fact query: Added business_id filter to prevent
cross-tenant contamination when same competitor tracked by
multiple customers.
3. issue_events versioning: Added source + review_version columns
for complete review reference in audit log.
4. Enrichment tenant-scoping: business_id now passed from ingest
job (not looked up). Validates place_id exists under tenant.
5. Footer: Fixed version string v3.1.1 → v3.1.2.
Status: Ship-ready specification.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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