feat(03-05): TechnicianProfile/JobTypeRate schema, migration, tenant scoping
- Added CompensationModel enum (PER_JOB, SALARY, HYBRID)
- Added TechnicianProfile model with userId FK, skills[], zoneId?, compensationModel, monthlySalary?, isActive, @@unique([tenantId,userId])
- Added JobTypeRate model with jobType, rate, isActive, @@unique([tenantId,jobType])
- Added reverse relations: User.technicianProfiles[], Zone.technicianProfiles[]
- Applied migration: 20260305000851_add_technician_profiles
- Added technicianProfile and jobTypeRate to TENANT_SCOPED_MODELS with full 12-operation extension blocks
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