feat(02-03): Subscriber and ServicePlan Prisma models + service layer

- Add SubscriberStatus (ACTIVE/SUSPENDED/CANCELLED) and BillingType (PREPAID/POSTPAID) enums
- Add ServicePlan model with name, speed, monthlyPrice, billingType, soft-delete
- Add Subscriber model with accountNumber, billingDay, status lifecycle, creditBalance
- Add TenantSettings model with autoSuspendDays and prepaidLeadDays
- Migrate: 20260304145633_add_subscriber_models
- Extend prisma-tenant.ts with subscriber, servicePlan, tenantSettings query scoping
- Create service-plan-service.ts: createServicePlan, updateServicePlan, listServicePlans, deactivateServicePlan
- Create subscriber-service.ts: createSubscriber, updateSubscriber, changeSubscriberStatus, searchSubscribers, getSubscriber, generateAccountNumber

prisma/migrations/20260304145633_add_subscriber_models/migration.sql

@@ -0,0 +1,86 @@
+-- CreateEnum
+CREATE TYPE "SubscriberStatus" AS ENUM ('ACTIVE', 'SUSPENDED', 'CANCELLED');
+
+-- CreateEnum
+CREATE TYPE "BillingType" AS ENUM ('PREPAID', 'POSTPAID');
+
+-- CreateTable
+CREATE TABLE "TenantSettings" (
+    "id" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL,
+    "autoSuspendDays" INTEGER NOT NULL DEFAULT 30,
+    "prepaidLeadDays" INTEGER NOT NULL DEFAULT 7,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "TenantSettings_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "ServicePlan" (
+    "id" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "speed" TEXT NOT NULL,
+    "monthlyPrice" DECIMAL(10,2) NOT NULL,
+    "billingType" "BillingType" NOT NULL,
+    "description" TEXT,
+    "isActive" BOOLEAN NOT NULL DEFAULT true,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "ServicePlan_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Subscriber" (
+    "id" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL,
+    "accountNumber" TEXT NOT NULL,
+    "firstName" TEXT NOT NULL,
+    "lastName" TEXT NOT NULL,
+    "email" TEXT,
+    "phone" TEXT,
+    "address" TEXT NOT NULL,
+    "zone" TEXT,
+    "servicePlanId" TEXT NOT NULL,
+    "status" "SubscriberStatus" NOT NULL DEFAULT 'ACTIVE',
+    "billingDay" INTEGER NOT NULL,
+    "activatedAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "suspendedAt" TIMESTAMP(3),
+    "cancelledAt" TIMESTAMP(3),
+    "autoSuspendDays" INTEGER,
+    "notes" TEXT,
+    "creditBalance" DECIMAL(10,2) NOT NULL DEFAULT 0,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "Subscriber_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "TenantSettings_tenantId_key" ON "TenantSettings"("tenantId");
+
+-- CreateIndex
+CREATE INDEX "TenantSettings_tenantId_idx" ON "TenantSettings"("tenantId");
+
+-- CreateIndex
+CREATE INDEX "ServicePlan_tenantId_idx" ON "ServicePlan"("tenantId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "ServicePlan_tenantId_name_key" ON "ServicePlan"("tenantId", "name");
+
+-- CreateIndex
+CREATE INDEX "Subscriber_tenantId_idx" ON "Subscriber"("tenantId");
+
+-- CreateIndex
+CREATE INDEX "Subscriber_tenantId_status_idx" ON "Subscriber"("tenantId", "status");
+
+-- CreateIndex
+CREATE INDEX "Subscriber_tenantId_servicePlanId_idx" ON "Subscriber"("tenantId", "servicePlanId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Subscriber_tenantId_accountNumber_key" ON "Subscriber"("tenantId", "accountNumber");
+
+-- AddForeignKey
+ALTER TABLE "Subscriber" ADD CONSTRAINT "Subscriber_servicePlanId_fkey" FOREIGN KEY ("servicePlanId") REFERENCES "ServicePlan"("id") ON DELETE RESTRICT ON UPDATE CASCADE;