QuoteDeclinedByCustomer was used for both approve and decline responses,
so approval notifications showed the wrong type in the log. Added a distinct
QuoteApprovedByCustomer = 16 enum value, wired up the correct type in
NotificationService, added default templates in both the service fallback
dictionary and SeedData, and updated placeholder hints in CompanySettings.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Customers who replied STOP by mistake can now reply START, YES, or
UNSTOP to automatically re-enable their SMS opt-in — no staff action
needed. Adds SmsInboundStart notification type, HandleStartAsync in
WebhooksController, and updates AI knowledge base and help docs.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
spouliot