feat: sync visible product branding

Sync telesrv c779c48 (feat(branding): unify visible product naming).

Skipped private www files and preserved public README files; mapped orange appearance seed names to public default names.

internal/branding/branding_test.go

@@ -0,0 +1,64 @@
+package branding
+
+import "testing"
+
+func TestUserVisibleTextRebrandsWordsAndOfficialHosts(t *testing.T) {
+	got := UserVisibleText(
+		"Telegram telegram TELEGRAM Telegram-like https://translations.telegram.org/en t.me/example desktop.telegram.org",
+		"https://chat.example/root/",
+	)
+	want := "Telesrv Telesrv Telesrv Telesrv-like https://chat.example/root/en chat.example/example chat.example"
+	if got != want {
+		t.Fatalf("UserVisibleText() = %q, want %q", got, want)
+	}
+}
+
+func TestUserVisibleTextPreservesTechnicalIdentifiers(t *testing.T) {
+	for _, value := range []string{
+		"org.telegram.messenger",
+		"telegram_antispam_user_id",
+		"telegram_aicomposetone",
+	} {
+		if got := UserVisibleText(value, ""); got != value {
+			t.Fatalf("UserVisibleText(%q) = %q, want unchanged", value, got)
+		}
+	}
+}
+
+func TestUserVisibleTextRebrandsBareOfficialHostsWithoutTouchingDottedIdentifiers(t *testing.T) {
+	for input, want := range map[string]string{
+		"telegram.org":           "telesrv.net",
+		"desktop.telegram.org":   "telesrv.net",
+		"t.me/example":           "telesrv.net/example",
+		"org.telegram.messenger": "org.telegram.messenger",
+	} {
+		if got := UserVisibleText(input, ""); got != want {
+			t.Fatalf("UserVisibleText(%q) = %q, want %q", input, got, want)
+		}
+	}
+}
+
+func TestUserVisibleTextRebrandsLocalizedProductNames(t *testing.T) {
+	got := UserVisibleText("Телеграмом تيليجرام تلگرام 텔레그램 טלגרם", "")
+	if want := "Telesrv Telesrv Telesrv Telesrv Telesrv"; got != want {
+		t.Fatalf("UserVisibleText() = %q, want %q", got, want)
+	}
+}
+
+func TestClientPresentationNames(t *testing.T) {
+	for platform, want := range map[string]string{
+		"tdesktop":    DesktopAppName,
+		"android":     AndroidAppName,
+		"ios":         IOSAppName,
+		"macos":       MacOSAppName,
+		"telegram-tt": WebAAppName,
+		"tweb":        WebKAppName,
+	} {
+		if got := ClientAppName(platform); got != want {
+			t.Fatalf("ClientAppName(%q) = %q, want %q", platform, got, want)
+		}
+	}
+	if got := UserVisibleClientPlatform("telegram-tt"); got != "weba" {
+		t.Fatalf("UserVisibleClientPlatform() = %q, want weba", got)
+	}
+}