Initial Navis client with NaiveProxy, profiles, ping and git updates

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/update/update_test.go

@@ -0,0 +1,15 @@
+package update
+
+import "testing"
+
+func TestCompare(t *testing.T) {
+	if Compare("1.1.0", "1.0.0") <= 0 {
+		t.Fatal("expected newer")
+	}
+	if Compare("1.0.0", "1.1.0") >= 0 {
+		t.Fatal("expected older")
+	}
+	if Compare("1.1.0", "1.1.0") != 0 {
+		t.Fatal("expected equal")
+	}
+}