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

prisma/schema.prisma

@@ -136,6 +136,12 @@ enum JobOrderStatus {
   CANCELLED
 }
 
+enum CompensationModel {
+  PER_JOB
+  SALARY
+  HYBRID
+}
+
 // =============================================================================
 // MODELS
 // =============================================================================
@@ -318,8 +324,9 @@ model Zone {
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
 
-  subscribers  Subscriber[]
-  assignments  ZoneAssignment[]
+  subscribers          Subscriber[]
+  assignments          ZoneAssignment[]
+  technicianProfiles   TechnicianProfile[]
 
   /// Zone names must be unique within a tenant
   @@unique([tenantId, name])
@@ -392,6 +399,8 @@ model User {
   assignedJobOrders JobOrder[]     @relation("JobOrderAssignedTo")
   /// Job orders created by this user (staff)
   createdJobOrders  JobOrder[]     @relation("JobOrderCreatedBy")
+  /// Technician profiles for this user (one per tenant, enforced by @@unique([tenantId, userId]))
+  technicianProfiles TechnicianProfile[]
 
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
@@ -795,3 +804,54 @@ model InvoiceLine {
   @@index([invoiceId])
   @@index([tenantId])
 }
+
+/// A TechnicianProfile holds ISP-specific attributes for a technician user.
+/// Compensation model determines how the technician is paid:
+///   PER_JOB: sum of job type rates for completed jobs
+///   SALARY: fixed monthly salary only
+///   HYBRID: monthly salary + per-job bonuses
+model TechnicianProfile {
+  id                String            @id @default(uuid())
+  tenantId          String
+  /// The technician user (FK to User) — one profile per user per tenant
+  userId            String
+  user              User              @relation(fields: [userId], references: [id])
+  phone             String?
+  /// PostgreSQL array of skill tags (e.g., ["fiber", "wireless", "installation"])
+  skills            String[]
+  /// Zone the technician is primarily assigned to (optional)
+  zoneId            String?
+  zone              Zone?             @relation(fields: [zoneId], references: [id])
+  compensationModel CompensationModel @default(PER_JOB)
+  /// Fixed monthly salary component (used for SALARY and HYBRID models)
+  monthlySalary     Decimal?          @db.Decimal(10, 2)
+  isActive          Boolean           @default(true)
+  createdAt         DateTime          @default(now())
+  updatedAt         DateTime          @updatedAt
+
+  /// One profile per user per tenant
+  @@unique([tenantId, userId])
+  /// RLS-ready index — always present on tenant-scoped models
+  @@index([tenantId])
+}
+
+/// A JobTypeRate defines the per-job bonus rate for a specific job type at tenant level.
+/// Used to calculate per-job compensation for technicians (PER_JOB and HYBRID models).
+/// Missing rates default to 0 bonus (not an error).
+model JobTypeRate {
+  id          String   @id @default(uuid())
+  tenantId    String
+  /// The job type identifier (e.g., "Installation", "Repair", "Maintenance")
+  jobType     String
+  /// Per-job bonus rate for this job type
+  rate        Decimal  @db.Decimal(10, 2)
+  description String?
+  isActive    Boolean  @default(true)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  /// One rate per job type per tenant
+  @@unique([tenantId, jobType])
+  /// RLS-ready index — always present on tenant-scoped models
+  @@index([tenantId])
+}