- Enable UseAuthentication middleware.

- Fix variable typo from `postgreConnection` to `postgresConnection`.
- Update `.gitignore` to exclude SQLite database files.

.gitignore

@@ -86,3 +86,8 @@ API/app.db-shm
 # Vite build output
 GUI/dist/
 wwwroot/
+
+# SQLite Datenbank-Dateien
+*.db
+*.db-shm
+*.db-wal

API/Program.cs

@@ -18,18 +18,19 @@ builder.Services.AddSwaggerGen();
 
 // Authentication
 builder.Services.AddAuthorization();
-builder.Services.AddAuthentication().AddCookie(IdentityConstants.ApplicationScheme);
+builder.Services.AddAuthentication()
+    .AddCookie(IdentityConstants.ApplicationScheme);
 
 builder.Services.AddIdentityCore<User>()
     .AddEntityFrameworkStores<ApplicationDbContext>()
     .AddApiEndpoints();
 
 // Database
-var postgreConnection = builder.Configuration.GetConnectionString("PostgresConnection");
+var postgresConnection = builder.Configuration.GetConnectionString("PostgresConnection");
-if (!string.IsNullOrEmpty(postgreConnection))
+if (!string.IsNullOrEmpty(postgresConnection))
 {
     // Nutze PostgresSQL
-    builder.Services.AddDbContext<ApplicationDbContext>(options => options.UseNpgsql(postgreConnection));
+    builder.Services.AddDbContext<ApplicationDbContext>(options => options.UseNpgsql(postgresConnection));
 }
 else
 {
@@ -64,7 +65,7 @@ app.UseDefaultFiles();
 app.UseStaticFiles();
 
 app.UseHttpsRedirection();
-
+app.UseAuthentication();
 app.UseAuthorization();
 
 // Map Auth Endpoints