feat(cpone): migrate lab registration endpoints

internal/repository/lab_services_test.go

@@ -0,0 +1,16 @@
+package repository
+
+import "testing"
+
+func TestAbsoluteSharesToPercentagesMatchesLaravel(t *testing.T) {
+	result := absoluteSharesToPercentages([4]float64{50000, 30000, 10000, 10000}, 100000)
+	expected := [4]float64{50, 30, 10, 10}
+	if result != expected {
+		t.Fatalf("shares = %v, want %v", result, expected)
+	}
+
+	withRounding := absoluteSharesToPercentages([4]float64{1, 1, 1, 0}, 3)
+	if withRounding != [4]float64{33.34, 33.33, 33.33, 0} {
+		t.Fatalf("rounded shares = %v", withRounding)
+	}
+}