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- New CustomerContact entity + migration (AddCustomerContactsAndCrmFields) - Customer.LeadSource + ShipToAddress/City/State/ZipCode/Country fields - Additional Contacts card on Customer Details with AJAX add/edit/delete - Lead Source dropdown on Create/Edit; Ship-To section on Create/Edit - Customer Details: side-by-side billing/ship-to when ship-to is set - Help docs: Customers (contacts, ship-to, lead source, preferred powders, outstanding pickups) - Help docs: Jobs (clone job, project name), Quotes (project name), Invoices (project name), Inventory (low stock clickable filter) - HelpKnowledgeBase.cs updated for all features above Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>