Add per-user saved column visibility for tables

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/prisma/migrations/20261005090000_user_table_preferences/migration.sql

@@ -0,0 +1,22 @@
+-- CreateTable
+CREATE TABLE IF NOT EXISTS "UserTablePreference" (
+    "id" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "organizationId" TEXT NOT NULL,
+    "tableKey" TEXT NOT NULL,
+    "hiddenColumns" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "UserTablePreference_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX IF NOT EXISTS "UserTablePreference_userId_organizationId_tableKey_key" ON "UserTablePreference"("userId", "organizationId", "tableKey");
+CREATE INDEX IF NOT EXISTS "UserTablePreference_userId_organizationId_idx" ON "UserTablePreference"("userId", "organizationId");
+
+-- AddForeignKey
+DO $$ BEGIN
+  ALTER TABLE "UserTablePreference" ADD CONSTRAINT "UserTablePreference_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+EXCEPTION WHEN duplicate_object THEN NULL;
+END $$;

apps/api/prisma/schema.prisma

@@ -264,6 +264,7 @@ model User {
   billingAccount BillingAccount?
   auditLogs      AuditLog[]      @relation("AuditLogActor")
   savedViews     SavedView[]     @relation("SavedViewOwner")
+  tablePreferences UserTablePreference[]
   assignedProjectCards ProjectCard[] @relation("ProjectCardAssignees")
   teamMemberships TeamMember[]
   reservationAssignments ReservationAppointment[] @relation("ReservationAssignee")
@@ -1712,6 +1713,22 @@ model AuditLog {
 }
 
 /// فیلترهای ذخیره‌شده برای لیست‌ها و کاریزها
+/// ستون‌های مخفی هر جدول برای هر کاربر (به‌ازای هر سازمان)
+model UserTablePreference {
+  id             String   @id @default(cuid())
+  userId         String
+  user           User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  organizationId String
+  tableKey       String
+  /// ستون جدیدی که بعداً اضافه شود به‌صورت پیش‌فرض نمایش داده می‌شود
+  hiddenColumns  String[] @default([])
+  createdAt      DateTime @default(now())
+  updatedAt      DateTime @updatedAt
+
+  @@unique([userId, organizationId, tableKey])
+  @@index([userId, organizationId])
+}
+
 model SavedView {
   id             String       @id @default(cuid())
   organizationId String