fix: Tier-3 feature gaps — transfer result screen + accurate RPC display

- Address-transfer dialog closed itself on submit (s_open=false the same frame),
  so its in-dialog result screen was dead code. Keep the dialog open on submit:
  s_sending drives the button to a disabled "Sending…" state, and the async
  callback's result (success txid / error) now shows in the result screen with
  its own Close button.
- Settings RPC connection editor was inert AND showed compile-time defaults.
  Populate Host/Port/Username/Password from the auto-detected daemon config
  (rpc::Connection::autoDetectConfig) and make the fields read-only — the RPC
  credentials come from the daemon's DRAGONX.conf, so these now accurately
  DISPLAY the live connection instead of pretending to be an editor (which did
  nothing). The existing "auto-detected" note now matches the behaviour.

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

src/ui/pages/settings_page.cpp

@@ -398,7 +398,15 @@ static void loadSettingsPageState(config::Settings* settings) {
     s_settingsState.verbose_logging = settings->getVerboseLogging();
     s_settingsState.debug_categories = settings->getDebugCategories();
     s_settingsState.debug_cats_dirty = false;
-    s_settingsState.rpc_plaintext_remote = rpc::Connection::usesPlaintextRemote(rpc::Connection::autoDetectConfig());
+    // Populate the RPC fields from the auto-detected daemon config so they show the REAL connection
+    // (host/port/user/pass) instead of compile-time defaults. These are read-only in the UI: the RPC
+    // credentials come from the daemon's DRAGONX.conf, so this is an accurate display, not an editor.
+    const auto rpcCfg = rpc::Connection::autoDetectConfig();
+    snprintf(s_settingsState.rpc_host,     sizeof(s_settingsState.rpc_host),     "%s", rpcCfg.host.c_str());
+    snprintf(s_settingsState.rpc_port,     sizeof(s_settingsState.rpc_port),     "%s", rpcCfg.port.c_str());
+    snprintf(s_settingsState.rpc_user,     sizeof(s_settingsState.rpc_user),     "%s", rpcCfg.rpcuser.c_str());
+    snprintf(s_settingsState.rpc_password, sizeof(s_settingsState.rpc_password), "%s", rpcCfg.rpcpassword.c_str());
+    s_settingsState.rpc_plaintext_remote = rpc::Connection::usesPlaintextRemote(rpcCfg);
 
     // Apply loaded visual effects settings
     effects::ImGuiAcrylic::ApplyBlurAmount(s_settingsState.blur_amount);
@@ -2011,8 +2019,11 @@ void RenderSettingsPage(App* app) {
                         ImGui::TextUnformatted(label);
                         ImGui::SameLine(0, Layout::spacingXs());
                         ImGui::SetNextItemWidth(inputW);
+                        // Read-only: the RPC credentials are auto-detected from the daemon's DRAGONX.conf,
+                        // so these fields DISPLAY the live connection (editing them here did nothing).
                         ImGui::InputText(id, buf, bufSz,
-                                         password ? ImGuiInputTextFlags_Password : 0);
+                                         ImGuiInputTextFlags_ReadOnly |
+                                         (password ? ImGuiInputTextFlags_Password : 0));
                     };
 
                     if (fourAcross) {

src/ui/windows/address_transfer_dialog.h

@@ -226,7 +226,9 @@ public:
                             Notifications::instance().error(result.empty() ? TR("transfer_failed") : result);
                         }
                     });
-                s_open = false;
+                // Keep the dialog OPEN on submit: s_sending drives the button to a disabled "Sending…"
+                // state, and when the async callback sets s_resultMsg the in-dialog result screen shows
+                // (with its own Close button). Previously closing here made that result screen dead code.
             }
             ImGui::EndDisabled();