(new): rich message support

(fix): runtime reliability
(tests): regression coverage
(doc): v1.1 release notes

keyboard_test.go

@@ -73,6 +73,35 @@ func TestInlineKeyboardButtonBuilderSetCallbackDataUsesConfiguredPayloadType(t *
 	}
 }
 
+func TestInlineKeyboardButtonBuilderKeepsExactlyOneAction(t *testing.T) {
+	callback := NewInlineKeyboardButton("Action").
+		SetURL("https://example.test").
+		SetCallbackDataJSON("confirm").
+		build()
+	if callback.URL != "" || callback.CallbackData == "" {
+		t.Fatalf("callback action was not exclusive: %#v", callback)
+	}
+
+	link := NewInlineKeyboardButton("Action").
+		SetCallbackDataJSON("confirm").
+		SetURL("https://example.test").
+		build()
+	if link.URL == "" || link.CallbackData != "" {
+		t.Fatalf("URL action was not exclusive: %#v", link)
+	}
+}
+
+func TestInlineKeyboardGetReturnsIndependentMarkup(t *testing.T) {
+	keyboard := NewInlineKeyboardJSON(1).AddURLButton("Docs", "https://example.test")
+	first := keyboard.Get()
+	first.InlineKeyboard[0][0].Text = "mutated"
+
+	second := keyboard.Get()
+	if got := second.InlineKeyboard[0][0].Text; got != "Docs" {
+		t.Fatalf("Get exposed builder state for mutation: got %q", got)
+	}
+}
+
 func TestInlineKeyboardGetPayloadTypeReturnsLocalOverride(t *testing.T) {
 	kb := NewInlineKeyboardJSON(2)
 	if got := kb.GetPayloadType(); got != BotPayloadJSON {