Initial commit of Descrybe v2 without local scratch artifacts.

Drop one-shot tmp/axe scripts and agent i18n scratch so the Gitea tree is deployable.

apps/api/internal/email/helpers_test.go

@@ -0,0 +1,58 @@
+package email
+
+import "testing"
+
+func TestConfirmUnderstoodPhrase(t *testing.T) {
+	if ConfirmUnderstoodPhrase != "I understand" {
+		t.Fatalf("unexpected phrase %q", ConfirmUnderstoodPhrase)
+	}
+}
+
+func TestDomainOfEmail(t *testing.T) {
+	if got := domainOfEmail("Alice@Example.COM"); got != "example.com" {
+		t.Fatalf("got %q", got)
+	}
+}
+
+func TestInjectUnsubscribeFooter(t *testing.T) {
+	html, text := injectUnsubscribeFooter("<p>Hi</p>", "Hi", "https://app/unsubscribe?token=x")
+	if !containsFold(html, "unsubscribe") || !containsFold(text, "unsubscribe") {
+		t.Fatalf("expected unsubscribe footer")
+	}
+}
+
+func containsFold(s, sub string) bool {
+	return len(s) >= len(sub) && (s == sub || len(sub) == 0 ||
+		(len(s) > 0 && (stringIndexFold(s, sub) >= 0)))
+}
+
+func stringIndexFold(s, sub string) int {
+	ls, lsub := len(s), len(sub)
+	for i := 0; i+lsub <= ls; i++ {
+		ok := true
+		for j := 0; j < lsub; j++ {
+			a, b := s[i+j], sub[j]
+			if a >= 'A' && a <= 'Z' {
+				a += 'a' - 'A'
+			}
+			if b >= 'A' && b <= 'Z' {
+				b += 'a' - 'A'
+			}
+			if a != b {
+				ok = false
+				break
+			}
+		}
+		if ok {
+			return i
+		}
+	}
+	return -1
+}
+
+func TestListUnsubscribeHeaders(t *testing.T) {
+	h := listUnsubscribeHeaders("https://api/u?t=1", "")
+	if h["List-Unsubscribe"] == "" || h["List-Unsubscribe-Post"] == "" {
+		t.Fatal("missing headers")
+	}
+}