feat(03-03): Ticket schema, categories, migration, and tenant scoping

- Added TicketStatus, TicketPriority, TicketSource enums to schema
- Added TicketCategory model (tenant-scoped, unique per tenant by name)
- Added Ticket model with lifecycle fields (status, priority, source, resolvedAt, closedAt)
- Added reverse relations: Subscriber.tickets, User.createdTickets, TicketCategory.tickets
- Applied migration 20260304233528_add_tickets
- Added ticket and ticketCategory to TENANT_SCOPED_MODELS with full extension blocks
- Seeded 6 default ISP ticket categories in createTenant transaction

prisma/migrations/20260304233528_add_tickets/migration.sql

@@ -0,0 +1,73 @@
+-- CreateEnum
+CREATE TYPE "TicketStatus" AS ENUM ('OPEN', 'ASSIGNED', 'RESOLVED', 'CLOSED');
+
+-- CreateEnum
+CREATE TYPE "TicketPriority" AS ENUM ('LOW', 'MEDIUM', 'HIGH', 'URGENT');
+
+-- CreateEnum
+CREATE TYPE "TicketSource" AS ENUM ('STAFF', 'SUBSCRIBER');
+
+-- CreateTable
+CREATE TABLE "TicketCategory" (
+    "id" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "description" TEXT,
+    "isActive" BOOLEAN NOT NULL DEFAULT true,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "TicketCategory_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Ticket" (
+    "id" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL,
+    "ticketNumber" TEXT NOT NULL,
+    "subject" TEXT NOT NULL,
+    "description" TEXT NOT NULL,
+    "categoryId" TEXT NOT NULL,
+    "priority" "TicketPriority" NOT NULL DEFAULT 'MEDIUM',
+    "status" "TicketStatus" NOT NULL DEFAULT 'OPEN',
+    "source" "TicketSource" NOT NULL DEFAULT 'STAFF',
+    "subscriberId" TEXT,
+    "createdById" TEXT NOT NULL,
+    "resolvedAt" TIMESTAMP(3),
+    "closedAt" TIMESTAMP(3),
+    "notes" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "Ticket_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "TicketCategory_tenantId_idx" ON "TicketCategory"("tenantId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "TicketCategory_tenantId_name_key" ON "TicketCategory"("tenantId", "name");
+
+-- CreateIndex
+CREATE INDEX "Ticket_tenantId_idx" ON "Ticket"("tenantId");
+
+-- CreateIndex
+CREATE INDEX "Ticket_tenantId_status_idx" ON "Ticket"("tenantId", "status");
+
+-- CreateIndex
+CREATE INDEX "Ticket_tenantId_categoryId_idx" ON "Ticket"("tenantId", "categoryId");
+
+-- CreateIndex
+CREATE INDEX "Ticket_subscriberId_idx" ON "Ticket"("subscriberId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Ticket_tenantId_ticketNumber_key" ON "Ticket"("tenantId", "ticketNumber");
+
+-- AddForeignKey
+ALTER TABLE "Ticket" ADD CONSTRAINT "Ticket_categoryId_fkey" FOREIGN KEY ("categoryId") REFERENCES "TicketCategory"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Ticket" ADD CONSTRAINT "Ticket_subscriberId_fkey" FOREIGN KEY ("subscriberId") REFERENCES "Subscriber"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Ticket" ADD CONSTRAINT "Ticket_createdById_fkey" FOREIGN KEY ("createdById") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;