Add interactive map to Impressum with configurable coordinates

- Add OpenStreetMap iframe to legal page showing business location
- Support ADDRESS_LATITUDE and ADDRESS_LONGITUDE environment variables
- Generate dynamic map URLs based on configured coordinates
- Include link to full map view
- Update legal-config.ts interface to include latitude/longitude
- Document new environment variables in README.md
- Use Kiel coordinates as default (54.3233, 10.1228)

src/server/lib/legal-config.ts

@@ -8,6 +8,8 @@ export interface LegalConfig {
     city: string;
     postalCode: string;
     country: string;
+    latitude?: number;
+    longitude?: number;
   };
   contact: {
     phone: string;
@@ -41,10 +43,12 @@ export const defaultLegalConfig: LegalConfig = {
   companyName: process.env.COMPANY_NAME || "Stargirlnails Kiel",
   ownerName: process.env.OWNER_NAME || "Inhaber Name",
   address: {
-    street: process.env.ADDRESS_STREET || "Musterstraße 123",
+    street: process.env.ADDRESS_STREET || "Liebigstr. 15",
     city: process.env.ADDRESS_CITY || "Kiel",
-    postalCode: process.env.ADDRESS_POSTAL_CODE || "24103",
+    postalCode: process.env.ADDRESS_POSTAL_CODE || "24145",
     country: process.env.ADDRESS_COUNTRY || "Deutschland",
+    latitude: process.env.ADDRESS_LATITUDE ? parseFloat(process.env.ADDRESS_LATITUDE) : 54.3233,
+    longitude: process.env.ADDRESS_LONGITUDE ? parseFloat(process.env.ADDRESS_LONGITUDE) : 10.1228,
   },
   contact: {
     phone: process.env.CONTACT_PHONE || "+49 431 123456",