test(sweep): add capture surfaces for the Wave-1 standalone modals

Register sweep surfaces so the redesigned Wave-1 modals get captured for visual
review: modal-qr-popup, modal-request-payment, modal-validate-address,
modal-address-label, modal-daemon-prompt, and modal-antivirus (the last renders
only on Windows, where its #ifdef body compiles). Each is driven through the
dialog's public show()/flag; teardown closes it. Adds a static hide() to
RequestPaymentDialog / ValidateAddressDialog / AddressLabelDialog for clean sweep
teardown (they had no public close). The contact add/edit and explorer block-detail
modals are tab-embedded and not yet surfaced.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/ui/windows/address_label_dialog.h

@@ -251,6 +251,9 @@ public:
 
     static bool isOpen() { return s_open; }
 
+    // Close the dialog (used by the UI sweep teardown).
+    static void hide() { s_open = false; }
+
 private:
     static inline bool s_open = false;
     static inline App* s_app = nullptr;

src/ui/windows/request_payment_dialog.cpp

@@ -59,6 +59,15 @@ void RequestPaymentDialog::show(const std::string& address)
     }
 }
 
+void RequestPaymentDialog::hide()
+{
+    s_open = false;
+    if (s_qr_texture != 0) {
+        FreeQRTexture(s_qr_texture);
+        s_qr_texture = 0;
+    }
+}
+
 void RequestPaymentDialog::render(App* app)
 {
     if (!s_open) return;

src/ui/windows/request_payment_dialog.h

@@ -26,6 +26,11 @@ public:
      * @brief Render the dialog (call each frame)
      */
     static void render(App* app);
+
+    /**
+     * @brief Close the dialog + free its QR texture (used by the UI sweep teardown)
+     */
+    static void hide();
 };
 
 } // namespace ui

src/ui/windows/validate_address_dialog.cpp

@@ -42,6 +42,11 @@ bool ValidateAddressDialog::isOpen()
     return s_open;
 }
 
+void ValidateAddressDialog::hide()
+{
+    s_open = false;
+}
+
 void ValidateAddressDialog::render(App* app)
 {
     if (!s_open) return;

src/ui/windows/validate_address_dialog.h

@@ -33,6 +33,11 @@ public:
      */
     static bool isOpen();
 
+    /**
+     * @brief Close the dialog (used by the UI sweep teardown)
+     */
+    static void hide();
+
 private:
     static bool s_open;
     static bool s_validated;