checker: split monolithic rule into per-concern rules

checker/rules_basic.go

@@ -0,0 +1,14 @@
+package checker
+
+import sdk "git.happydns.org/checker-sdk-go/checker"
+
+// basicRule covers Zonemaster's basic/system test modules (initial
+// reachability and fundamental pre-conditions for running the other test
+// categories).
+func basicRule() sdk.CheckRule {
+	return &categoryRule{
+		name:        "zonemaster.basic",
+		description: "Zonemaster basic tests (initial reachability and fundamental requirements).",
+		modules:     []string{"basic", "system"},
+	}
+}