- Create Vendor model with company info, trade specialties, active flag
- Create Dispatch model (doubles as Vendor PO) with PO number, NTE, status, reply-to address
- VendorController: CRUD, paginated list, dropdown endpoint with trade filtering
- DispatchToVendor endpoint: multi-vendor dispatch, auto-generated PO numbers (VPO-00001),
HTML email with full WO details via SendGrid, reply-to wo-{number}@int.seahaven.com
- GetDispatches endpoint for listing dispatches by WO
- Include dispatches in GetWorkorderById response
- SendMessage.SendDispatchEmail with reply-to support
- Audit log entry for each dispatch
- Create DropdownOption model with Category, Value, ParentValue for Trade/SubTrade/Problem
- Add DropdownOptionsController with CRUD + ByCategory endpoint with parent filtering
- Add Problem, Trade, SubTrade, VendorNTE, ScheduledDate, CompletedDate, Source to WorkOrder
- Update EditWorkorder_DTO and GetWorkorderById with new fields
- Audit log tracks changes to all new fields
- Seed default Trades (10), SubTrades (20), and Problems (11) on startup
- Add CommentType field to Comments (customer, vendor, internal)
- Add Status field to EditWorkorder_DTO
- Create WorkOrderAuditLog model tracking field-level changes
- Log all field changes on work order edit and status change
- Include commentType and auditLog in GetWorkorderById response
- Set CommentType=customer on synced comments from DynamoDB
- Add BackfillCommentTypes endpoint for existing data
