feat(qconnect): restore the device-name setting from Tauri

Tauri let the user rename how QBZ announces itself to Qobuz Connect;
the Slint port lost the UI entirely while keeping the persistence and
the announce path (same device_name key in qconnect_settings.db, read
by connect() -> bootstrap_remote_presence). Restored 1:1: a text row
in Settings > Playback next to the QConnect startup select (LineEdit
mirroring the ListenBrainz token row, placeholder = the resolved
default 'Qbz - {hostname}'), a new settings-string callback channel
through the settings chain, and a live-service setter so a rename
takes effect on the next connection without an app restart — exactly
Tauri's semantics (no live re-announce; the row description says so).
Trim-only validation like Tauri; empty clears the override. Two new
msgids across the 8 locales.

cc

crates/qbz-ui/translations/de/LC_MESSAGES/qbz-ui.po

@@ -4482,3 +4482,10 @@ msgstr "Standardmäßig aus"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "QBZ hat sich von wiederholten Startabstürzen erholt — einige wiederhergestellte Zustände wurden zurückgesetzt"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Qobuz Connect-Gerätename"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "Der Name, den andere Qobuz Connect-Apps für dieses Gerät sehen. Wird bei der nächsten Verbindung übernommen."

crates/qbz-ui/translations/en/LC_MESSAGES/qbz-ui.po

@@ -251,3 +251,10 @@ msgstr "Remove album from collection"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "QBZ recovered from repeated startup crashes — some restored state was reset"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Qobuz Connect device name"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "The name other Qobuz Connect apps see for this device. Applies on the next connection."

crates/qbz-ui/translations/es/LC_MESSAGES/qbz-ui.po

@@ -4512,3 +4512,10 @@ msgstr "Desactivado de forma predeterminada"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "QBZ se recuperó de fallos repetidos al iniciar — se restableció parte del estado guardado"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Nombre del dispositivo en Qobuz Connect"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "El nombre que otras apps de Qobuz Connect ven para este dispositivo. Se aplica en la próxima conexión."

crates/qbz-ui/translations/fr/LC_MESSAGES/qbz-ui.po

@@ -4482,3 +4482,10 @@ msgstr "Désactivé par défaut"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "QBZ s'est remis de plantages répétés au démarrage — une partie de l'état restauré a été réinitialisée"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Nom d'appareil Qobuz Connect"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "Le nom que les autres applications Qobuz Connect voient pour cet appareil. Appliqué à la prochaine connexion."

crates/qbz-ui/translations/ja/LC_MESSAGES/qbz-ui.po

@@ -4471,3 +4471,10 @@ msgstr "デフォルトでオフ"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "QBZ は起動時の連続クラッシュから復旧しました — 復元された状態の一部がリセットされました"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Qobuz Connectのデバイス名"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "他のQobuz Connectアプリに表示されるこのデバイスの名前です。次回の接続時に適用されます。"

crates/qbz-ui/translations/nl/LC_MESSAGES/qbz-ui.po

@@ -4494,3 +4494,10 @@ msgstr "Standaard uit"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "QBZ is hersteld van herhaalde crashes bij het opstarten — een deel van de herstelde staat is gereset"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Qobuz Connect-apparaatnaam"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "De naam die andere Qobuz Connect-apps voor dit apparaat zien. Wordt toegepast bij de volgende verbinding."

crates/qbz-ui/translations/pt/LC_MESSAGES/qbz-ui.po

@@ -4482,3 +4482,10 @@ msgstr "Desligado por padrão"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "O QBZ se recuperou de falhas repetidas na inicialização — parte do estado restaurado foi redefinida"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Nome do dispositivo no Qobuz Connect"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "O nome que outros aplicativos Qobuz Connect veem para este dispositivo. Aplicado na próxima conexão."

crates/qbz-ui/translations/ru/LC_MESSAGES/qbz-ui.po

@@ -4495,3 +4495,10 @@ msgstr "Выключено по умолчанию"
 
 msgid "QBZ recovered from repeated startup crashes — some restored state was reset"
 msgstr "QBZ восстановился после повторных сбоев при запуске — часть восстановленного состояния была сброшена"
+
+# QConnect device name (Settings > Playback, ported from Tauri)
+msgid "Qobuz Connect device name"
+msgstr "Имя устройства в Qobuz Connect"
+
+msgid "The name other Qobuz Connect apps see for this device. Applies on the next connection."
+msgstr "Имя, под которым это устройство видят другие приложения Qobuz Connect. Применяется при следующем подключении."

crates/qbz-ui/ui/app.slint

@@ -98,6 +98,7 @@ export component AppWindow inherits Window {
     callback settings-bool(string, bool);
     callback settings-select(string, int);
     callback settings-slider(string, int);
+    callback settings-string(string, string);
     callback settings-reset();
     callback settings-release-device();
     callback logout();
@@ -158,6 +159,9 @@ export component AppWindow inherits Window {
         settings-slider(k, v) => {
             root.settings-slider(k, v);
         }
+        settings-string(k, s) => {
+            root.settings-string(k, s);
+        }
         settings-reset => {
             root.settings-reset();
         }

crates/qbz-ui/ui/settings/PlaybackSettings.slint

@@ -3,9 +3,10 @@
 // SettingsState global and persisted through the Rust settings
 // controller.
 
+import { LineEdit } from "std-widgets.slint";
 import { Theme } from "../foundation/semantic-colors.slint";
 import { Typography } from "../foundation/typography.slint";
-import { SettingsState } from "../state.slint";
+import { SettingsState, UiFocusState } from "../state.slint";
 import { QbzToggle } from "../primitives/QbzToggle.slint";
 import { QbzSelect } from "../primitives/QbzSelect.slint";
 import { QbzSlider } from "../primitives/QbzSlider.slint";
@@ -27,6 +28,7 @@ export component PlaybackSettings inherits VerticalLayout {
     callback settings-bool(string, bool);
     callback settings-select(string, int);
     callback settings-slider(string, int);
+    callback settings-string(string, string);
 
     spacing: 4px;
 
@@ -112,6 +114,37 @@ export component PlaybackSettings inherits VerticalLayout {
             }
         }
     }
+    SettingRow {
+        label: @tr("Qobuz Connect device name");
+        description: @tr("The name other Qobuz Connect apps see for this device. Applies on the next connection.");
+        // Same fixed width as the select rows so the input right-aligns
+        // flush with the rest of the panel (alignment standard).
+        HorizontalLayout {
+            width: 240px;
+            VerticalLayout {
+                alignment: center;
+                horizontal-stretch: 1;
+                LineEdit {
+                    text: SettingsState.qconnect-device-name;
+                    placeholder-text: SettingsState.qconnect-device-name-default;
+                    // Commit on focus loss too (mirrors the Tauri onchange
+                    // semantics: blur or Enter), not only on Enter.
+                    changed has-focus => {
+                        UiFocusState.text-input-focused = self.has-focus;
+                        if (!self.has-focus) {
+                            root.settings-string("qconnect-device-name", self.text);
+                        }
+                    }
+                    edited(s) => {
+                        SettingsState.qconnect-device-name = s;
+                    }
+                    accepted(s) => {
+                        root.settings-string("qconnect-device-name", s);
+                    }
+                }
+            }
+        }
+    }
 
     Rectangle { height: 12px; }
     Divider { }

crates/qbz-ui/ui/settings/SettingsView.slint

@@ -67,6 +67,7 @@ export component SettingsView inherits Rectangle {
     callback settings-bool(string, bool);
     callback settings-select(string, int);
     callback settings-slider(string, int);
+    callback settings-string(string, string);
     callback settings-reset();
     callback settings-release-device();
 
@@ -248,6 +249,9 @@ export component SettingsView inherits Rectangle {
                         settings-slider(k, v) => {
                             root.settings-slider(k, v);
                         }
+                        settings-string(k, s) => {
+                            root.settings-string(k, s);
+                        }
                     }
                     // Appearance — a structural replica; rows bind to
                     // AppearanceState and emit its own callbacks, so no

crates/qbz-ui/ui/shell/AppShell.slint

@@ -94,6 +94,7 @@ export component AppShell inherits Rectangle {
     callback settings-bool(string, bool);
     callback settings-select(string, int);
     callback settings-slider(string, int);
+    callback settings-string(string, string);
     callback settings-reset();
     callback settings-release-device();
     callback logout();
@@ -502,6 +503,9 @@ export component AppShell inherits Rectangle {
                     settings-slider(k, v) => {
                         root.settings-slider(k, v);
                     }
+                    settings-string(k, s) => {
+                        root.settings-string(k, s);
+                    }
                     settings-reset => {
                         root.settings-reset();
                     }

crates/qbz-ui/ui/state.slint

@@ -2891,6 +2891,12 @@ export global SettingsState {
     // Rust controller, which owns the index -> mode mapping.
     in-out property <[string]> qconnect-startup-modes: [];
     in-out property <int> qconnect-startup-index: 0;
+    // Playback — Qobuz Connect device name. The persisted custom override
+    // ("" = unset) plus the effective default name shown as the input
+    // placeholder ("Qbz - {hostname}"). Backed by the QConnect settings DB
+    // via the settings-string callback; applies on the next connect.
+    in-out property <string> qconnect-device-name: "";
+    in-out property <string> qconnect-device-name-default: "";
 
     // --- OFFLINE MODE --------------------------------------------------------
 

crates/qbz/src/main.rs

@@ -9029,6 +9029,22 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         });
     }
 
+    // Settings — a text input committed (QConnect device name): persist it
+    // and refresh the live QConnect service cache; the new name is announced
+    // on the next connect.
+    {
+        let weak = window.as_weak();
+        let handle = tokio_rt.handle().clone();
+        window.on_settings_string(move |key, value| {
+            let weak = weak.clone();
+            let key = key.to_string();
+            let value = value.to_string();
+            handle.spawn(async move {
+                settings::handle_string(weak, key, value).await;
+            });
+        });
+    }
+
     // Settings — Reset: restore Audio + Playback defaults, rebuild the
     // snapshot, and re-apply the audio settings to the player.
     {

crates/qbz/src/qconnect_service.rs

@@ -457,6 +457,16 @@ impl SlintQconnectService {
         self.inner.lock().await.runtime.is_some()
     }
 
+    /// Update the cached custom device name (Settings > Playback). The name
+    /// is only announced by `bootstrap_remote_presence` during `connect()`,
+    /// so — mirroring the Tauri `v2_qconnect_set_device_name` — a rename
+    /// takes effect on the NEXT connect; the live session is untouched.
+    /// `None` clears the override (falls back to "Qbz - {hostname}").
+    /// Persistence is the caller's job (`qconnect_transport::persist_device_name`).
+    pub async fn set_custom_device_name(&self, name: Option<String>) {
+        *self.custom_device_name.write().await = name;
+    }
+
     /// Pure read of the live session for the Diagnostics panel (Settings >
     /// Developer). Mirrors the Tauri `snapshotQconnect`: reads `inner.last_error`,
     /// the transport-connected flag (`app.state_handle().transport_connected`),

crates/qbz/src/settings.rs

@@ -187,6 +187,10 @@ pub struct SettingsSnapshot {
     retry_behavior_index: i32,
     qconnect_startup_modes: Vec<String>,
     qconnect_startup_index: i32,
+    // QConnect device name — persisted custom override ("" = unset) + the
+    // effective default used as the input's placeholder.
+    qconnect_device_name: String,
+    qconnect_device_name_default: String,
     // Now-playing output indicators (backend + effective bit-perfect mode).
     output_backend_label: String,
     output_mode_label: String,
@@ -512,6 +516,13 @@ fn build_snapshot(
         .iter()
         .position(|(_, m)| *m == qconnect_startup_mode)
         .unwrap_or(QCONNECT_STARTUP_MODES.len() - 1); // last entry = Off (default)
+    // QConnect device name — same DB (and same blocking-SQLite caveat) as the
+    // startup mode above. Empty = no custom override; the placeholder shows
+    // the name that will actually be announced (env var -> "Qbz - {hostname}").
+    let qconnect_device_name =
+        crate::qconnect_transport::load_persisted_device_name().unwrap_or_default();
+    let qconnect_device_name_default =
+        crate::qconnect_transport::resolve_qconnect_friendly_name(None);
 
     let backend_is_alsa = active_backend == AudioBackendType::Alsa;
     let backend_is_pipewire = active_backend == AudioBackendType::PipeWire;
@@ -583,6 +594,8 @@ fn build_snapshot(
             .map(|(l, _)| qbz_i18n::t(l))
             .collect(),
         qconnect_startup_index: qconnect_startup_index as i32,
+        qconnect_device_name,
+        qconnect_device_name_default,
         output_backend_label: out_backend_label,
         output_mode_label: out_mode_label,
         output_backend_active: out_backend_active,
@@ -673,6 +686,8 @@ pub fn apply_snapshot(window: &AppWindow, snap: SettingsSnapshot) {
     st.set_retry_behavior_index(snap.retry_behavior_index);
     st.set_qconnect_startup_modes(string_model(snap.qconnect_startup_modes));
     st.set_qconnect_startup_index(snap.qconnect_startup_index);
+    st.set_qconnect_device_name(snap.qconnect_device_name.into());
+    st.set_qconnect_device_name_default(snap.qconnect_device_name_default.into());
     st.set_loading(false);
 }
 
@@ -1068,6 +1083,43 @@ pub fn handle_slider(
     }
 }
 
+/// Handle a text-input commit (Enter or focus loss). Currently only the
+/// QConnect device name — mirrors the Tauri `v2_qconnect_set_device_name`:
+/// trim; empty clears the override so the announced name falls back to the
+/// default ("Qbz - {hostname}"). Persisted in the QConnect settings DB and
+/// pushed into the live service's cache; the name is only announced during
+/// `connect()`, so a rename takes effect on the next connection.
+pub async fn handle_string(weak: slint::Weak<AppWindow>, key: String, value: String) {
+    match key.as_str() {
+        "qconnect-device-name" => {
+            let trimmed = value.trim().to_string();
+            let stored = (!trimmed.is_empty()).then(|| trimmed.clone());
+            // Persist (blocking SQLite) off the async runtime.
+            let to_persist = stored.clone();
+            if let Err(e) = tokio::task::spawn_blocking(move || {
+                crate::qconnect_transport::persist_device_name(to_persist.as_deref())
+            })
+            .await
+            {
+                log::error!("[qbz-slint] persist qconnect device name failed: {e}");
+            }
+            // Update the live service cache so the next connect announces the
+            // new name without an app restart (it loads the DB only once, at
+            // construction).
+            if let Some(svc) = crate::qconnect_service::service() {
+                svc.set_custom_device_name(stored).await;
+            }
+            // Push the trimmed value back so a whitespace-only entry visibly
+            // resets the input to the placeholder/default state.
+            let _ = weak.upgrade_in_event_loop(move |w| {
+                w.global::<SettingsState>()
+                    .set_qconnect_device_name(trimmed.into());
+            });
+        }
+        other => log::warn!("[qbz-slint] unknown settings string key: {other}"),
+    }
+}
+
 /// Handle a dropdown change: persist it, apply audio ones to the player,
 /// and — for a backend switch — re-enumerate devices and recompute the
 /// conditional flags into `SettingsState`.