v1.74.0

Features

• add TICKET_RESOLVED to WhatsAppTemplateType enum
• add Ticket Resolved WhatsApp template to admin tester page
• add wa_ticket_resolved handler with sample data to tester API
• send WhatsApp notification on ticket resolve with template fallback
• add missing webhook message types for audio, video, sticker, reaction, button, interactive
• add optimistic update for sent messages so they appear instantly
• add rich message type rendering with icons for photo, video, audio, document
• add sendTicketResolved method and auto-truncate all template params to 100 chars
• add TICKET_RESOLVED template type, name mapping, and data interface
• extract content from all webhook message types instead of storing null

Bug Fixes

• accept PDF files by extension fallback on client-side validation
• validate PDF by extension and magic bytes, not just MIME type
• add null guards for assignedBy and nullable name fields on detail page
• make firstName/lastName and assignedBy nullable in detail hook types
• default status filter to Open instead of All
• exclude reactions from conversation previews and show proper media labels
• filter reaction events from message list since they are metadata
• remove unnecessary slice on last message preview in conversation list