feat(core): add address fields to CompanyForm

frontend/src/pages/CompanyForm.tsx

@@ -20,6 +20,11 @@ const companySchema = z.object({
   email: z.string().email('Ungültige E-Mail-Adresse').max(255).optional().or(z.literal('')),
   website: z.string().max(500, 'Maximal 500 Zeichen').optional().or(z.literal('')),
   description: z.string().optional().or(z.literal('')),
+  address_street: z.string().max(255).optional().or(z.literal('')),
+  address_city: z.string().max(100).optional().or(z.literal('')),
+  address_zip: z.string().max(20).optional().or(z.literal('')),
+  address_country: z.string().max(2).optional().or(z.literal('')),
+  address_state: z.string().max(100).optional().or(z.literal('')),
 });
 
 type CompanyFormValues = z.infer<typeof companySchema>;
@@ -50,6 +55,11 @@ export function CompanyFormPage() {
       email: '',
       website: '',
       description: '',
+      address_street: '',
+      address_city: '',
+      address_zip: '',
+      address_country: '',
+      address_state: '',
     },
   });
 
@@ -63,6 +73,11 @@ export function CompanyFormPage() {
         email: company.email || '',
         website: company.website || '',
         description: company.description || '',
+        address_street: (company as any).address_street || '',
+        address_city: (company as any).address_city || '',
+        address_zip: (company as any).address_zip || '',
+        address_country: (company as any).address_country || '',
+        address_state: (company as any).address_state || '',
       });
     }
   }, [company, isEdit, reset]);
@@ -175,6 +190,42 @@ export function CompanyFormPage() {
           )}
         </Card>
 
+        <Card title={t('address.title')}>
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+            <Input
+              {...register('address_street')}
+              label={t('address.street')}
+              error={errors.address_street?.message}
+              placeholder="Musterstraße 1"
+            />
+            <Input
+              {...register('address_city')}
+              label={t('address.city')}
+              error={errors.address_city?.message}
+              placeholder="Berlin"
+            />
+            <Input
+              {...register('address_zip')}
+              label={t('address.zip')}
+              error={errors.address_zip?.message}
+              placeholder="10115"
+            />
+            <Input
+              {...register('address_country')}
+              label={t('address.country')}
+              error={errors.address_country?.message}
+              placeholder="DE"
+              maxLength={2}
+            />
+            <Input
+              {...register('address_state')}
+              label={t('address.state')}
+              error={errors.address_state?.message}
+              placeholder="Berlin"
+            />
+          </div>
+        </Card>
+
         <div className="flex justify-end gap-3">
           <Button variant="secondary" onClick={() => navigate(-1)}>
             {t('common.cancel')}