Three final fixes applied:
1. issue_spans versioning: Added source + review_version columns
with FK to reviews_enriched(source, review_id, review_version).
Spans now correctly reference the exact review version.
2. Competitor business_id rule: Clarified that competitor reviews
use customer's business_id + competitor's place_id (not NULL).
Keeps facts and joins working without special-case logic.
3. Trust-weighted facts: Clarified trust_weighted_* columns are
reserved but not populated in v3.1. Trust scoring applies to
issue priority only. Aggregation deferred to v3.2.
Status: Production-grade architecture specification.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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