chore: init project

src/InboxIntel.Infrastructure/Persistence/AppDbContextFactory.cs

@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace InboxIntel.Infrastructure.Persistence;
+
+/// <summary>
+/// Design-time factory so `dotnet ef migrations add ...` works without booting
+/// the full API host. Reads the connection string from the EF_CONNECTION env
+/// var, falling back to a local default.
+/// </summary>
+public class AppDbContextFactory : IDesignTimeDbContextFactory<AppDbContext>
+{
+    public AppDbContext CreateDbContext(string[] args)
+    {
+        var conn = Environment.GetEnvironmentVariable("EF_CONNECTION")
+                   ?? "Host=localhost;Port=5432;Database=inboxintel;Username=inboxintel;Password=inboxintel";
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseNpgsql(conn)
+            .Options;
+        return new AppDbContext(options);
+    }
+}