fix(ui): drop Validate-address results divider; remove ungapturable daemon-prompt surface

Two sweep-driven fixes:
- Validate Address: remove the input->results Separator. When no result is shown
  yet it sat directly above the Close button and read as a footer divider,
  inconsistent with the reference design (the description divider was already gone).
- Drop the modal-daemon-prompt sweep surface: renderDaemonUpdatePrompt is gated
  behind !capture_mode_, so it never renders during a sweep (the capture showed the
  Settings page behind it). Its migration stays verified via build + the shared
  BlurFloat/TactileButton pattern.

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

src/app_sweep.cpp

@@ -342,9 +342,8 @@ void App::buildSweepCatalog()
     add("modal-address-label", ui::NavPage::Overview,
         [](App& a) { ui::AddressLabelDialog::show(&a, kDemoZAddr, true); },
         [](App&) { ui::AddressLabelDialog::hide(); });
-    add("modal-daemon-prompt", ui::NavPage::Settings,
+    // (No modal-daemon-prompt surface: renderDaemonUpdatePrompt is gated behind !capture_mode_,
-        [](App& a) { a.daemon_update_bundled_size_ = 12345678ull; a.show_daemon_update_prompt_ = true; },
+    //  so it can't render during a sweep. Its migration is verified by build + the shared overlay pattern.)
-        [](App& a) { a.show_daemon_update_prompt_ = false; });
     add("modal-antivirus", ui::NavPage::Mining,
         [](App& a) { a.pending_antivirus_dialog_ = true; },
         [](App& a) { a.pending_antivirus_dialog_ = false; });

src/ui/windows/validate_address_dialog.cpp

@@ -171,8 +171,6 @@ void ValidateAddressDialog::render(App* app)
             ImGui::TextColored(ImVec4(1.0f, 1.0f, 0.0f, 1.0f), "%s", TR("validating"));
         }
 
-        ImGui::Spacing();
-        ImGui::Separator();
         ImGui::Spacing();
 
         // Results