add just tasks

justfile

@@ -0,0 +1,14 @@
+default:
+    @just --list
+
+# Format and lint project
+fmt:
+    treefmt
+
+# Build the project
+build:
+    go build .
+
+# Run unitests
+test:
+     pytest -s ./tests

shell.nix

@@ -15,5 +15,6 @@ with pkgs;
       hivemind
       go
       treefmt
+      just
     ];
   }