Fix Wave 2 review: PG18 volume path, null guards, NotAuthorized redirect, drop docker-compose, port 5433 connection strings

DeepDrftWeb.Services/Data/DeepDrftContextFactory.cs

@@ -10,9 +10,9 @@ public class DeepDrftContextFactory : IDesignTimeDbContextFactory<DeepDrftContex
         // For 'dotnet ef' commands, set ConnectionStrings__DefaultConnection in your environment when
         // you need to actually hit the database (e.g. `dotnet ef database update`). For model-only
         // operations like `migrations add`, the placeholder below is sufficient — EF never connects.
-        // Example: export ConnectionStrings__DefaultConnection="Host=localhost;Database=deepdrft_dev;Username=postgres;Password=yourpassword"
+        // Example: export ConnectionStrings__DefaultConnection="Host=localhost;Port=5433;Database=postgres;Username=postgres;Password=yourpassword"
         var connectionString = Environment.GetEnvironmentVariable("ConnectionStrings__DefaultConnection")
-            ?? "Host=localhost;Database=deepdrft_dev;Username=postgres;Password=placeholder";
+            ?? "Host=localhost;Port=5433;Database=postgres;Username=postgres;Password=placeholder";
 
         var optionsBuilder = new DbContextOptionsBuilder<DeepDrftContext>();
         optionsBuilder.UseNpgsql(connectionString);