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 $$ BEGIN
+  ALTER TABLE "UserTablePreference" ADD CONSTRAINT "UserTablePreference_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+EXCEPTION WHEN duplicate_object THEN NULL;
+END $$;