Found via TDD that supplier_leads has its own platform CHECK constraint
(chk_supplier_leads_platform) and that the seed migration was missing
NOT NULL columns (accepts_types, channel). Migration now:
- widens supplier_projects/project_supplier_links/supplier_leads.platform
VARCHAR(4) → VARCHAR(8) (DIRECT is 6 chars)
- extends three CHECK constraints to include 'DIRECT'
Seed migration uses raw SQL INSERT to properly serialize PG ARRAY type
for accepts_types column. channel='sites' (valid per suppliers_channel_check).
db/schema.sql synced — 3 platform columns and 3 CHECK constraints updated.
CHANGELOG_schema.md entry pending Task 9.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Дмитрий
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