Admin UI abtrennen + google settings in gui + UI enhancement

backend/prisma/migrations/20260122190000_app_setting/migration.sql

@@ -0,0 +1,12 @@
+-- CreateTable
+CREATE TABLE "AppSetting" (
+    "id" TEXT NOT NULL,
+    "key" TEXT NOT NULL,
+    "value" TEXT NOT NULL,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "AppSetting_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "AppSetting_key_key" ON "AppSetting"("key");

backend/prisma/schema.prisma

@@ -41,6 +41,13 @@ enum RuleConditionType {
   LIST_ID
 }
 
+enum ExportStatus {
+  QUEUED
+  RUNNING
+  DONE
+  FAILED
+}
+
 model Tenant {
   id        String   @id @default(cuid())
   name      String
@@ -55,13 +62,6 @@ model Tenant {
   jobs           CleanupJob[]
 }
 
-enum ExportStatus {
-  QUEUED
-  RUNNING
-  DONE
-  FAILED
-}
-
 model ExportJob {
   id        String       @id @default(cuid())
   tenantId  String
@@ -240,3 +240,10 @@ model CleanupJobEvent {
 
   @@index([jobId])
 }
+
+model AppSetting {
+  id        String   @id @default(cuid())
+  key       String   @unique
+  value     String
+  updatedAt DateTime @updatedAt
+}