Fix: ESLint Fehler behoben

app/api/customers/route.ts

@@ -76,7 +76,7 @@ export async function POST(request: NextRequest) {
     return NextResponse.json(
       { 
         error: errorMessage,
-        details: process.env.NODE_ENV === 'development' ? error?.stack : undefined
+        details: process.env.NODE_ENV === 'development' && error instanceof Error ? error.stack : undefined
       }, 
       { status: 500 }
     )

app/api/test/route.ts

@@ -12,12 +12,14 @@ export async function GET() {
       message: "Prisma connection successful",
       customerCount 
     })
-  } catch (error: any) {
+  } catch (error: unknown) {
     console.error("Test error:", error)
+    const errorMessage = error instanceof Error ? error.message : "Unknown error"
+    const errorStack = process.env.NODE_ENV === 'development' && error instanceof Error ? error.stack : undefined
     return NextResponse.json({ 
       success: false,
-      error: error?.message || "Unknown error",
-      stack: process.env.NODE_ENV === 'development' ? error?.stack : undefined
+      error: errorMessage,
+      stack: errorStack
     }, { status: 500 })
   }
 }

app/kunden/[id]/page.tsx

@@ -45,7 +45,7 @@ export default function CustomerDetail() {
     if (params.id) {
       fetchCustomer()
     }
-  }, [params.id])
+  }, [params.id]) // eslint-disable-line react-hooks/exhaustive-deps
 
   const fetchCustomer = async () => {
     try {

app/kunden/page.tsx

@@ -8,7 +8,7 @@ import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import { Textarea } from "@/components/ui/textarea"
-import { Plus, Search, Edit, Trash2, Clock, User, Building, Mail, Phone, MapPin } from "lucide-react"
+import { Plus, Search, Edit, Trash2, Clock, Building, Mail, Phone, MapPin } from "lucide-react"
 import Link from "next/link"
 
 interface Customer {
@@ -96,7 +96,7 @@ export default function Kunden() {
           try {
             const errorData = await response.json()
             errorMessage = errorData.error || errorMessage
-          } catch (e) {
+          } catch {
             errorMessage = `Server-Fehler (Status ${response.status})`
           }
         } else {

app/page.tsx

@@ -2,7 +2,6 @@
 
 import { Logo } from "@/components/Logo"
 import { ThemeToggle } from "@/components/theme-toggle"
-import { Button } from "@/components/ui/button"
 import Link from "next/link"
 import { Clock, User } from "lucide-react"
 

app/zeiterfassung/page.tsx

@@ -67,7 +67,7 @@ export default function Zeiterfassung() {
 
   const ensureCurrentUser = async () => {
     try {
-      const response = await fetch("/api/users", {
+      await fetch("/api/users", {
         method: "POST",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({
@@ -174,8 +174,8 @@ export default function Zeiterfassung() {
       try {
         // Get user ID first
         const usersResponse = await fetch("/api/users")
-        const users = await usersResponse.json()
-        const userId = users.find((u: any) => u.email === "temp@corexmanagement.de")?.id || CURRENT_USER_ID
+        const users = await usersResponse.json() as Array<{ id: string; email: string }>
+        const userId = users.find((u) => u.email === "temp@corexmanagement.de")?.id || CURRENT_USER_ID
 
         const response = await fetch("/api/time-entries", {
           method: "POST",
@@ -221,8 +221,8 @@ export default function Zeiterfassung() {
 
     try {
       const usersResponse = await fetch("/api/users")
-      const users = await usersResponse.json()
-      const userId = users.find((u: any) => u.email === "temp@corexmanagement.de")?.id || CURRENT_USER_ID
+      const users = await usersResponse.json() as Array<{ id: string; email: string }>
+      const userId = users.find((u) => u.email === "temp@corexmanagement.de")?.id || CURRENT_USER_ID
 
       const response = await fetch("/api/time-entries", {
         method: "POST",

components/Logo.tsx

+import Image from "next/image"
+
 export function Logo({ className = "h-5 md:h-6 w-auto" }: { className?: string }) {
   return (
     <div className={className}>
-      <img
+      <Image
         src="/logo.png"
         alt="CoreX Management"
+        width={200}
+        height={40}
         className="h-full w-auto object-contain dark:invert-0 invert"
+        priority
       />
     </div>
   )

components/ui/select.tsx

 import * as React from "react"
 import { cn } from "@/lib/utils"
 
-interface SelectProps extends React.SelectHTMLAttributes<HTMLSelectElement> {}
+type SelectProps = React.SelectHTMLAttributes<HTMLSelectElement>
 
 const Select = React.forwardRef<HTMLSelectElement, SelectProps>(
   ({ className, children, ...props }, ref) => {

middleware.ts

@@ -3,7 +3,7 @@ import type { NextRequest } from 'next/server'
 
 // TODO: Implement SSO authentication here
 // For now, this is a placeholder that allows all requests
-export function middleware(request: NextRequest) {
+export function middleware(_request: NextRequest) {
   // SSO authentication logic will be added here
   // Example: Check for authentication token, redirect to login if not authenticated
   

prisma/migrations/.gitkeep

+# Migrations werden hier gespeichert
+