platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/traffic_mode_helpers_test.go

@@ -0,0 +1,30 @@
+package app
+
+import "testing"
+
+func TestIsContainerIfaceIncludesNetnsVeth(t *testing.T) {
+	cases := map[string]bool{
+		"docker0":      true,
+		"br-abcdef123": true,
+		"veth123":      true,
+		"svh6198e294":  true,
+		"svn6198e294":  true,
+		"eth0":         false,
+		"tun0":         false,
+	}
+	for iface, want := range cases {
+		if got := isContainerIface(iface); got != want {
+			t.Fatalf("isContainerIface(%q)=%v want=%v", iface, got, want)
+		}
+	}
+}
+
+func TestRouteLineIsLinkDown(t *testing.T) {
+	if !routeLineIsLinkDown("10.240.20.0/30 dev svh6a59db31 proto kernel scope link src 10.240.20.1 linkdown") {
+		t.Fatalf("expected linkdown route to be detected")
+	}
+	if routeLineIsLinkDown("10.240.20.0/30 dev svh6198e294 proto kernel scope link src 10.240.20.1") {
+		t.Fatalf("unexpected linkdown detection for active route")
+	}
+}
+