merge branch 'main' into redesign

README.md

@@ -169,6 +169,10 @@ If you want to build Psysonic from source or contribute to the project:
 ### Prerequisites
 - [Node.js](https://nodejs.org/) (v18+)
 - [Rust](https://www.rust-lang.org/) (v1.75+)
+- **`cmake`** — required to compile the bundled libopus (Opus audio support). Install it before running `cargo build` or `npm run tauri:build`:
+  - Linux: `sudo apt install cmake` / `sudo pacman -S cmake`
+  - macOS: `brew install cmake`
+  - Windows: [cmake.org/download](https://cmake.org/download/) or `winget install cmake`
 - OS-specific build dependencies for Tauri (see the [Tauri prerequisites guide](https://tauri.app/v2/guides/getting-started/prerequisites)).
 
 ### Setup

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "psysonic",
-  "version": "1.34.9",
+  "version": "1.34.11-dev",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "psysonic",
-      "version": "1.34.9",
+      "version": "1.34.11-dev",
       "dependencies": {
         "@fontsource-variable/dm-sans": "^5.2.8",
         "@fontsource-variable/figtree": "^5.2.10",
@@ -2278,9 +2278,9 @@
       }
     },
     "node_modules/follow-redirects": {
-      "version": "1.15.11",
+      "version": "1.16.0",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.11.tgz",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.16.0.tgz",
-      "integrity": "sha512-deG2P0JfjrTxl50XGCDyfI97ZGVCxIpfKYmfyrQ54n5FO/0gfIES8C/Psl6kWVDolizcaaxZJnTS0QSMxvnsBQ==",
+      "integrity": "sha512-y5rN/uOsadFT/JfYwhxRS5R7Qce+g3zG97+JrtFZlC9klX/W5hD7iiLzScI4nZqUS7DNUdhPgw4xI8W2LuXlUw==",
       "funding": [
         {
           "type": "individual",

src-tauri/Cargo.lock

@@ -619,6 +619,15 @@ dependencies = [
  "libloading 0.8.9",
 ]
 
+[[package]]
+name = "cmake"
+version = "0.1.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0f78a02292a74a88ac736019ab962ece0bc380e3f977bf72e376c5d78ff0678"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "cocoa"
 version = "0.24.1"
@@ -3078,6 +3087,15 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
+[[package]]
+name = "opusic-sys"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc3280fe5b6f97ac1a35a0ac003e2fb0b92f8e4bdf2b2057e1bf9b87acca5696"
+dependencies = [
+ "cmake",
+]
+
 [[package]]
 name = "ordered-stream"
 version = "0.2.0"
@@ -3581,6 +3599,8 @@ dependencies = [
  "serde_json",
  "souvlaki",
  "symphonia",
+ "symphonia-adapter-libopus",
+ "sysinfo",
  "tauri",
  "tauri-build",
  "tauri-plugin-dialog",
@@ -4739,6 +4759,17 @@ dependencies = [
  "symphonia-metadata",
 ]
 
+[[package]]
+name = "symphonia-adapter-libopus"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9d17450685dda0e87467eddf3e0f9c0b2a1707fc5c3234c111f70d46c6e4494"
+dependencies = [
+ "log",
+ "opusic-sys",
+ "symphonia-core",
+]
+
 [[package]]
 name = "symphonia-bundle-flac"
 version = "0.5.5"
@@ -4927,6 +4958,17 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "sysinfo"
+version = "0.33.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fc858248ea01b66f19d8e8a6d55f41deaf91e9d495246fd01368d99935c6c01"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+ "windows 0.54.0",
+]
+
 [[package]]
 name = "system-deps"
 version = "6.2.2"

src-tauri/Cargo.toml

@@ -7,7 +7,7 @@ license = ""
 repository = ""
 default-run = "psysonic"
 edition = "2021"
-rust-version = "1.77.2"
+rust-version = "1.89"
 
 [lib]
 name = "psysonic_lib"
@@ -45,7 +45,9 @@ discord-rich-presence = "0.2"
 url = "2"
 thread-priority = "1"
 lofty = "0.22"
+sysinfo = { version = "0.33", default-features = false, features = ["disk"] }
 id3 = "1.16.4"
+symphonia-adapter-libopus = "0.2.7"
 
 [target.'cfg(unix)'.dependencies]
 libc = "0.2"

src-tauri/src/audio.rs

@@ -1,5 +1,5 @@
 use std::io::{Cursor, Read, Seek, SeekFrom};
-use std::sync::{Arc, Mutex};
+use std::sync::{Arc, Mutex, OnceLock};
 use std::sync::atomic::{AtomicBool, AtomicU32, AtomicU64, Ordering};
 use std::time::{Duration, Instant};
 #[cfg(unix)]
@@ -13,7 +13,7 @@ use rodio::source::UniformSourceIterator;
 use serde::Serialize;
 use symphonia::core::{
     audio::{AudioBufferRef, SampleBuffer, SignalSpec},
-    codecs::{DecoderOptions, CODEC_TYPE_NULL},
+    codecs::{CodecRegistry, DecoderOptions, CODEC_TYPE_NULL},
     formats::{FormatOptions, FormatReader, SeekMode, SeekTo},
     io::{MediaSource, MediaSourceStream, MediaSourceStreamOptions},
     meta::MetadataOptions,
@@ -682,11 +682,22 @@ impl Drop for RadioLiveState {
 //   [features]
 //   fdk-aac = ["dep:symphonia-adapter-fdk-aac"]
 
+/// Symphonia’s default codec set for our enabled features, plus Opus via libopus.
+fn psysonic_codec_registry() -> &'static CodecRegistry {
+    static REGISTRY: OnceLock<CodecRegistry> = OnceLock::new();
+    REGISTRY.get_or_init(|| {
+        let mut registry = CodecRegistry::new();
+        symphonia::default::register_enabled_codecs(&mut registry);
+        registry.register_all::<symphonia_adapter_libopus::OpusDecoder>();
+        registry
+    })
+}
+
 fn try_make_radio_decoder(
     params: &symphonia::core::codecs::CodecParameters,
     opts: &DecoderOptions,
 ) -> Result<Box<dyn symphonia::core::codecs::Decoder>, symphonia::core::errors::Error> {
-    symphonia::default::get_codecs().make(params, opts)
+    psysonic_codec_registry().make(params, opts)
 }
 
 // ── Async HTTP Download Task ──────────────────────────────────────────────────
@@ -980,7 +991,7 @@ impl SizedDecoder {
             .zip(track.codec_params.n_frames)
             .map(|(base, frames)| base.calc_time(frames));
 
-        let mut decoder = symphonia::default::get_codecs()
+        let mut decoder = psysonic_codec_registry()
             .make(&track.codec_params, &DecoderOptions::default())
             .map_err(|e| {
                 eprintln!("[psysonic] codec init failed: {e}");

src-tauri/src/lib.rs

@@ -1351,7 +1351,68 @@ async fn purge_hot_cache(custom_dir: Option<String>, app: tauri::AppHandle) -> R
 
 // ─── Device Sync ─────────────────────────────────────────────────────────────
 
-#[derive(serde::Deserialize)]
+/// Information about a single mounted removable drive.
+#[derive(Clone, serde::Serialize)]
+struct RemovableDrive {
+    name: String,
+    mount_point: String,
+    available_space: u64,
+    total_space: u64,
+    file_system: String,
+    is_removable: bool,
+}
+
+/// Returns all currently mounted removable drives.
+/// On Linux these are typically USB sticks / SD cards under /media or /run/media.
+/// On macOS they appear under /Volumes. On Windows they are separate drive letters.
+#[tauri::command]
+fn get_removable_drives() -> Vec<RemovableDrive> {
+    use sysinfo::Disks;
+    let disks = Disks::new_with_refreshed_list();
+    disks
+        .list()
+        .iter()
+        .filter(|d| d.is_removable())
+        .map(|d| RemovableDrive {
+            name: d.name().to_string_lossy().to_string(),
+            mount_point: d.mount_point().to_string_lossy().to_string(),
+            available_space: d.available_space(),
+            total_space: d.total_space(),
+            file_system: d.file_system().to_string_lossy().to_string(),
+            is_removable: true,
+        })
+        .collect()
+}
+
+/// Checks whether `path` sits on top of an active mount point (i.e. not the root
+/// filesystem). This prevents accidentally writing to `/media/usb` after the
+/// USB drive has been unmounted — at that point the path would fall through to `/`
+/// and fill the root partition.
+fn is_path_on_mounted_volume(path: &std::path::Path) -> bool {
+    use sysinfo::Disks;
+    let disks = Disks::new_with_refreshed_list();
+    let canonical = match path.canonicalize() {
+        Ok(c) => c,
+        Err(_) => return false, // path doesn't exist or isn't accessible
+    };
+    let canonical_str = canonical.to_string_lossy();
+    // Find the longest mount-point prefix that matches this path.
+    // Exclude the root "/" (or "C:\" on Windows) so we never "match" a fallback.
+    let mut best_len: usize = 0;
+    for disk in disks.list() {
+        let mp = disk.mount_point().to_string_lossy().to_string();
+        // Skip root mount points
+        if mp == "/" || (mp.len() == 3 && mp.ends_with(":\\")) {
+            continue;
+        }
+        if canonical_str.starts_with(&mp) && mp.len() > best_len {
+            best_len = mp.len();
+        }
+    }
+    best_len > 0
+}
+
+#[derive(serde::Deserialize, Clone)]
 struct TrackSyncInfo {
     id: String,
     url: String,
@@ -1366,6 +1427,14 @@ struct TrackSyncInfo {
     year: Option<u32>,
 }
 
+/// Summary returned by `sync_batch_to_device` after all tracks are processed.
+#[derive(Clone, serde::Serialize)]
+struct SyncBatchResult {
+    done: u32,
+    skipped: u32,
+    failed: u32,
+}
+
 #[derive(serde::Serialize)]
 struct SyncTrackResult {
     path: String,
@@ -1524,22 +1593,445 @@ async fn delete_device_file(path: String) -> Result<(), String> {
     let p = std::path::PathBuf::from(&path);
     if p.exists() {
         tokio::fs::remove_file(&p).await.map_err(|e| e.to_string())?;
-        // Prune empty parent dirs (album → artist)
+        prune_empty_parents(&p, 2).await;
-        let mut current = p.parent().map(|d| d.to_path_buf());
+    }
-        for _ in 0..2 {
+    Ok(())
-            let Some(dir) = current else { break };
+}
-            let is_empty = std::fs::read_dir(&dir)
+
-                .map(|mut rd| rd.next().is_none())
+/// Prune empty parent directories up to `levels` levels above `file_path`.
-                .unwrap_or(false);
+async fn prune_empty_parents(file_path: &std::path::Path, levels: usize) {
-            if is_empty {
+    let mut current = file_path.parent().map(|d| d.to_path_buf());
-                let _ = tokio::fs::remove_dir(&dir).await;
+    for _ in 0..levels {
-                current = dir.parent().map(|d| d.to_path_buf());
+        let Some(dir) = current else { break };
-            } else {
+        let is_empty = std::fs::read_dir(&dir)
-                break;
+            .map(|mut rd| rd.next().is_none())
+            .unwrap_or(false);
+        if is_empty {
+            let _ = tokio::fs::remove_dir(&dir).await;
+            current = dir.parent().map(|d| d.to_path_buf());
+        } else {
+            break;
+        }
+    }
+}
+
+#[derive(serde::Deserialize)]
+#[serde(rename_all = "camelCase")]
+struct SubsonicAuthPayload {
+    base_url: String,
+    u: String,
+    t: String,
+    s: String,
+    v: String,
+    c: String,
+    f: String,
+}
+
+#[derive(serde::Deserialize)]
+struct DeviceSyncSourcePayload {
+    #[serde(rename = "type")]
+    source_type: String,
+    id: String,
+}
+
+#[derive(serde::Serialize)]
+#[serde(rename_all = "camelCase")]
+struct SyncDeltaResult {
+    add_bytes: u64,
+    add_count: u32,
+    del_bytes: u64,
+    del_count: u32,
+    available_bytes: u64,
+    tracks: Vec<serde_json::Value>,
+}
+
+async fn fetch_subsonic_songs(
+    client: &reqwest::Client,
+    auth: &SubsonicAuthPayload,
+    endpoint: &str,
+    id: &str,
+) -> Result<Vec<serde_json::Value>, String> {
+    let url = format!("{}/{}", auth.base_url, endpoint);
+    let query = vec![
+        ("u", auth.u.as_str()),
+        ("t", auth.t.as_str()),
+        ("s", auth.s.as_str()),
+        ("v", auth.v.as_str()),
+        ("c", auth.c.as_str()),
+        ("f", auth.f.as_str()),
+        ("id", id),
+    ];
+    let res = client.get(&url).query(&query).send().await.map_err(|e| e.to_string())?;
+    let json: serde_json::Value = res.json().await.map_err(|e| e.to_string())?;
+    
+    let root = json.get("subsonic-response").ok_or("No subsonic-response".to_string())?;
+    let songs = if endpoint == "getAlbum.view" {
+        root.get("album").and_then(|a| a.get("song"))
+    } else if endpoint == "getPlaylist.view" {
+        root.get("playlist").and_then(|p| p.get("entry"))
+    } else {
+        None
+    };
+
+    if let Some(arr) = songs.and_then(|s| s.as_array()) {
+        return Ok(arr.clone());
+    } else if let Some(obj) = songs.and_then(|s| s.as_object()) {
+        return Ok(vec![serde_json::Value::Object(obj.clone())]);
+    }
+    Ok(vec![])
+}
+
+#[tauri::command]
+async fn calculate_sync_payload(
+    sources: Vec<DeviceSyncSourcePayload>,
+    deletion_ids: Vec<String>,
+    auth: SubsonicAuthPayload,
+    target_dir: String,
+    template: String,
+) -> Result<SyncDeltaResult, String> {
+    let client = reqwest::Client::builder()
+        .timeout(std::time::Duration::from_secs(30))
+        .build()
+        .map_err(|e| e.to_string())?;
+
+    let mut add_bytes = 0;
+    let mut add_count = 0;
+    let mut del_bytes = 0;
+    let mut del_count = 0;
+    
+    let mut sync_tracks = Vec::new();
+    let (mut del_sources, mut add_sources) = (Vec::new(), Vec::new());
+    for s in sources {
+        if deletion_ids.contains(&s.id) {
+            del_sources.push(s);
+        } else {
+            add_sources.push(s);
+        }
+    }
+    
+    let mut handles = Vec::new();
+    for source in add_sources {
+        let auth_clone = SubsonicAuthPayload {
+            base_url: auth.base_url.clone(), u: auth.u.clone(), t: auth.t.clone(), s: auth.s.clone(),
+            v: auth.v.clone(), c: auth.c.clone(), f: auth.f.clone(),
+        };
+        let cli = client.clone();
+        handles.push(tokio::spawn(async move {
+            let mut res_tracks = Vec::new();
+            if source.source_type == "album" {
+                if let Ok(ts) = fetch_subsonic_songs(&cli, &auth_clone, "getAlbum.view", &source.id).await { res_tracks.extend(ts); }
+            } else if source.source_type == "playlist" {
+                if let Ok(ts) = fetch_subsonic_songs(&cli, &auth_clone, "getPlaylist.view", &source.id).await { res_tracks.extend(ts); }
+            } else if source.source_type == "artist" {
+                let url = format!("{}/getArtist.view", auth_clone.base_url);
+                let query = vec![("u", auth_clone.u.as_str()), ("t", auth_clone.t.as_str()), ("s", auth_clone.s.as_str()), ("v", auth_clone.v.as_str()), ("c", auth_clone.c.as_str()), ("f", auth_clone.f.as_str()), ("id", &source.id)];
+                if let Ok(re) = cli.get(&url).query(&query).send().await {
+                   if let Ok(js) = re.json::<serde_json::Value>().await {
+                       if let Some(root) = js.get("subsonic-response").and_then(|r| r.get("artist")).and_then(|a| a.get("album")) {
+                          let arr = root.as_array().map(|a| a.clone()).unwrap_or_else(|| {
+                              root.as_object().map(|o| vec![serde_json::Value::Object(o.clone())]).unwrap_or_else(|| vec![])
+                          });
+                          for al in arr {
+                              if let Some(aid) = al.get("id").and_then(|i| i.as_str()) {
+                                  if let Ok(ts) = fetch_subsonic_songs(&cli, &auth_clone, "getAlbum.view", aid).await {
+                                      res_tracks.extend(ts);
+                                  }
+                              }
+                          }
+                       }
+                   }
+                }
+            }
+            res_tracks
+        }));
+    }
+    
+    let mut del_handles = Vec::new();
+    for source in del_sources {
+        let auth_clone = SubsonicAuthPayload {
+            base_url: auth.base_url.clone(), u: auth.u.clone(), t: auth.t.clone(), s: auth.s.clone(),
+            v: auth.v.clone(), c: auth.c.clone(), f: auth.f.clone(),
+        };
+        let cli = client.clone();
+        del_handles.push(tokio::spawn(async move {
+            let mut res_tracks = Vec::new();
+            if source.source_type == "album" {
+                if let Ok(ts) = fetch_subsonic_songs(&cli, &auth_clone, "getAlbum.view", &source.id).await { res_tracks.extend(ts); }
+            } else if source.source_type == "playlist" {
+                if let Ok(ts) = fetch_subsonic_songs(&cli, &auth_clone, "getPlaylist.view", &source.id).await { res_tracks.extend(ts); }
+            }
+            res_tracks
+        }));
+    }
+
+    let mut seen = std::collections::HashSet::new();
+    for handle in handles {
+        if let Ok(ts) = handle.await {
+            for track in ts {
+                if let Some(tid) = track.get("id").and_then(|i| i.as_str()) {
+                    if !seen.contains(tid) {
+                        seen.insert(tid.to_string());
+                        // Build the expected path and skip files already present on device.
+                        let already_exists = {
+                            let suffix = track.get("suffix").and_then(|s| s.as_str()).unwrap_or("mp3");
+                            let sync_info = TrackSyncInfo {
+                                id: tid.to_string(),
+                                url: String::new(),
+                                suffix: suffix.to_string(),
+                                artist: track.get("artist").and_then(|v| v.as_str()).unwrap_or("").to_string(),
+                                album: track.get("album").and_then(|v| v.as_str()).unwrap_or("").to_string(),
+                                title: track.get("title").and_then(|v| v.as_str()).unwrap_or("").to_string(),
+                                track_number: track.get("track").and_then(|v| v.as_u64()).map(|n| n as u32),
+                                disc_number: track.get("discNumber").and_then(|v| v.as_u64()).map(|n| n as u32),
+                                year: track.get("year").and_then(|v| v.as_u64()).map(|n| n as u32),
+                            };
+                            let relative = apply_device_sync_template(&template, &sync_info);
+                            let file_name = format!("{}.{}", relative, suffix);
+                            std::path::Path::new(&target_dir).join(&file_name).exists()
+                        };
+                        if !already_exists {
+                            add_count += 1;
+                            let size = track.get("size").and_then(|s| s.as_u64()).unwrap_or_else(|| {
+                                track.get("duration").and_then(|d| d.as_u64()).unwrap_or(0) * 320_000 / 8
+                            });
+                            add_bytes += size;
+                            sync_tracks.push(track);
+                        }
+                    }
+                }
             }
         }
     }
-    Ok(())
+
+    for handle in del_handles {
+        if let Ok(ts) = handle.await {
+            for track in ts {
+                del_count += 1;
+                let size = track.get("size").and_then(|s| s.as_u64()).unwrap_or_else(|| {
+                    track.get("duration").and_then(|d| d.as_u64()).unwrap_or(0) * 320_000 / 8
+                });
+                del_bytes += size;
+            }
+        }
+    }
+    
+    let mut available_bytes = 0;
+    for drive in get_removable_drives() {
+        if target_dir.starts_with(&drive.mount_point) {
+            available_bytes = drive.available_space;
+            break;
+        }
+    }
+
+    Ok(SyncDeltaResult {
+        add_bytes, add_count, del_bytes, del_count, available_bytes, tracks: sync_tracks,
+    })
+}
+
+/// Downloads a batch of tracks to a USB/SD device with controlled concurrency.
+/// At most 2 parallel writes run simultaneously to prevent I/O choking on USB.
+/// Emits throttled `device:sync:progress` events (max once per 500ms) and a
+/// final `device:sync:complete` event with the summary.
+#[tauri::command]
+async fn sync_batch_to_device(
+    tracks: Vec<TrackSyncInfo>,
+    dest_dir: String,
+    template: String,
+    job_id: String,
+    expected_bytes: u64,
+    app: tauri::AppHandle,
+) -> Result<SyncBatchResult, String> {
+    use std::sync::atomic::{AtomicU32, Ordering};
+    use std::time::{Duration, Instant};
+    use tokio::sync::Mutex;
+
+    let dest_root = std::path::PathBuf::from(&dest_dir);
+    if !dest_root.exists() {
+        return Err("VOLUME_NOT_FOUND".to_string());
+    }
+    // Safety: verify dest_dir is on an actual mounted volume, not the root FS.
+    // This catches the case where a USB drive was unmounted but the empty
+    // mount-point directory still exists — writing there fills the root partition.
+    if !is_path_on_mounted_volume(&dest_root) {
+        return Err("NOT_MOUNTED_VOLUME".to_string());
+    }
+
+    // Safety: Ensure target logic hasn't exceeded physical volume capacities securely stopping dead bytes natively.
+    let drives = get_removable_drives();
+    let dest_canon = dest_root.canonicalize().unwrap_or_else(|_| dest_root.clone());
+    let dest_str = dest_canon.to_string_lossy();
+    
+    for drive in drives {
+        if dest_str.starts_with(&drive.mount_point) {
+            // Buffer of ~10 MB padding boundary natively mapped
+            if expected_bytes > drive.available_space.saturating_sub(10_000_000) {
+                return Err(format!("NOT_ENOUGH_SPACE"));
+            }
+            break;
+        }
+    }
+
+    // Shared reqwest client — reused across all downloads.
+    let client = reqwest::Client::builder()
+        .timeout(Duration::from_secs(300))
+        .build()
+        .map_err(|e| e.to_string())?;
+
+    // Concurrency limiter: max 2 parallel USB writes.
+    let semaphore = std::sync::Arc::new(tokio::sync::Semaphore::new(2));
+
+    // Counters.
+    let done    = std::sync::Arc::new(AtomicU32::new(0));
+    let skipped = std::sync::Arc::new(AtomicU32::new(0));
+    let failed  = std::sync::Arc::new(AtomicU32::new(0));
+
+    // Throttled event emission (max once per 500ms).
+    let last_emit = std::sync::Arc::new(Mutex::new(Instant::now()));
+    let total = tracks.len() as u32;
+
+    let mut handles = Vec::with_capacity(tracks.len());
+
+    for track in tracks {
+        let sem = semaphore.clone();
+        let cli = client.clone();
+        let app2 = app.clone();
+        let job = job_id.clone();
+        let tmpl = template.clone();
+        let dest = dest_dir.clone();
+        let d = done.clone();
+        let s = skipped.clone();
+        let f = failed.clone();
+        let le = last_emit.clone();
+
+        handles.push(tokio::spawn(async move {
+            let _permit = sem.acquire().await.expect("semaphore closed");
+
+            let relative = apply_device_sync_template(&tmpl, &track);
+            let file_name = format!("{}.{}", relative, track.suffix);
+            let dest_path = std::path::Path::new(&dest).join(&file_name);
+            let path_str = dest_path.to_string_lossy().to_string();
+
+            let status;
+            if dest_path.exists() {
+                s.fetch_add(1, Ordering::Relaxed);
+                status = "skipped";
+            } else {
+                // Ensure parent directories exist.
+                if let Some(parent) = dest_path.parent() {
+                    if let Err(e) = tokio::fs::create_dir_all(parent).await {
+                        f.fetch_add(1, Ordering::Relaxed);
+                        let _ = app2.emit("device:sync:progress", serde_json::json!({
+                            "jobId": job, "trackId": track.id, "status": "error",
+                            "error": e.to_string(),
+                        }));
+                        return;
+                    }
+                }
+
+                let response = match cli.get(&track.url).send().await {
+                    Ok(r) if r.status().is_success() => r,
+                    Ok(r) => {
+                        f.fetch_add(1, Ordering::Relaxed);
+                        let _ = app2.emit("device:sync:progress", serde_json::json!({
+                            "jobId": job, "trackId": track.id, "status": "error",
+                            "error": format!("HTTP {}", r.status().as_u16()),
+                        }));
+                        return;
+                    }
+                    Err(e) => {
+                        f.fetch_add(1, Ordering::Relaxed);
+                        let _ = app2.emit("device:sync:progress", serde_json::json!({
+                            "jobId": job, "trackId": track.id, "status": "error",
+                            "error": e.to_string(),
+                        }));
+                        return;
+                    }
+                };
+
+                let part_path = dest_path.with_extension(format!("{}.part", track.suffix));
+                if let Err(e) = stream_to_file(response, &part_path).await {
+                    let _ = tokio::fs::remove_file(&part_path).await;
+                    f.fetch_add(1, Ordering::Relaxed);
+                    let _ = app2.emit("device:sync:progress", serde_json::json!({
+                        "jobId": job, "trackId": track.id, "status": "error",
+                        "error": e,
+                    }));
+                    return;
+                }
+                if let Err(e) = tokio::fs::rename(&part_path, &dest_path).await {
+                    let _ = tokio::fs::remove_file(&part_path).await;
+                    f.fetch_add(1, Ordering::Relaxed);
+                    let _ = app2.emit("device:sync:progress", serde_json::json!({
+                        "jobId": job, "trackId": track.id, "status": "error",
+                        "error": e.to_string(),
+                    }));
+                    return;
+                }
+
+                d.fetch_add(1, Ordering::Relaxed);
+                status = "done";
+            }
+
+            // Throttled progress event — max once per 500ms.
+            let should_emit = {
+                let mut guard = le.lock().await;
+                if guard.elapsed() >= Duration::from_millis(500) {
+                    *guard = Instant::now();
+                    true
+                } else {
+                    false
+                }
+            };
+            if should_emit {
+                let _ = app2.emit("device:sync:progress", serde_json::json!({
+                    "jobId": job, "trackId": track.id, "status": status, "path": path_str,
+                    "done": d.load(Ordering::Relaxed),
+                    "skipped": s.load(Ordering::Relaxed),
+                    "failed": f.load(Ordering::Relaxed),
+                    "total": total,
+                }));
+            }
+        }));
+    }
+
+    // Wait for all tasks to complete.
+    for handle in handles {
+        let _ = handle.await;
+    }
+
+    let result = SyncBatchResult {
+        done:    done.load(Ordering::Relaxed),
+        skipped: skipped.load(Ordering::Relaxed),
+        failed:  failed.load(Ordering::Relaxed),
+    };
+
+    // Final event so the frontend always sees 100%.
+    let _ = app.emit("device:sync:complete", serde_json::json!({
+        "jobId": job_id,
+        "done": result.done,
+        "skipped": result.skipped,
+        "failed": result.failed,
+        "total": total,
+    }));
+
+    Ok(result)
+}
+
+/// Deletes multiple files from the device in one call and prunes empty parent
+/// directories. Returns the number of files successfully deleted.
+#[tauri::command]
+async fn delete_device_files(paths: Vec<String>) -> Result<u32, String> {
+    let mut deleted: u32 = 0;
+    for path in &paths {
+        let p = std::path::PathBuf::from(path);
+        if p.exists() {
+            if tokio::fs::remove_file(&p).await.is_ok() {
+                deleted += 1;
+                prune_empty_parents(&p, 2).await;
+            }
+        }
+    }
+    Ok(deleted)
 }
 
 /// Builds and returns a new system-tray icon with all menu items and event handlers.
@@ -1884,6 +2376,7 @@ pub fn run() {
         })
         .invoke_handler(tauri::generate_handler![
             greet,
+            calculate_sync_payload,
             exit_app,
             set_window_decorations,
             no_compositing_mode,
@@ -1932,9 +2425,12 @@ pub fn run() {
             delete_hot_cache_track,
             purge_hot_cache,
             sync_track_to_device,
+            sync_batch_to_device,
             compute_sync_paths,
             list_device_dir_files,
             delete_device_file,
+            delete_device_files,
+            get_removable_drives,
             toggle_tray_icon,
             check_dir_accessible,
             download_zip,

src/api/subsonic.ts

@@ -23,7 +23,7 @@ function getAuthParams(username: string, password: string) {
   return { u: username, t: token, s: salt, v: '1.16.1', c: `psysonic/${version}`, f: 'json' };
 }
 
-function getClient() {
+export function getClient() {
   const { getBaseUrl, getActiveServer } = useAuthStore.getState();
   const server = getActiveServer();
   const baseUrl = getBaseUrl();
@@ -741,11 +741,18 @@ export async function fetchStatisticsFormatSample(): Promise<StatisticsFormatSam
 }
 
 export async function getArtists(): Promise<SubsonicArtist[]> {
-  const data = await api<{ artists: { index: Array<{ artist: SubsonicArtist[] }> } }>('getArtists.view', {
+  const data = await api<{ artists: { index: any } }>('getArtists.view', {
     ...libraryFilterParams(),
   });
-  const indices = data.artists?.index ?? [];
+  const rawIdx = data.artists?.index;
-  return indices.flatMap(i => i.artist ?? []);
+  const indices = Array.isArray(rawIdx) ? rawIdx : (rawIdx ? [rawIdx] : []);
+  const artists: SubsonicArtist[] = [];
+  for (const idx of indices) {
+    const rawArt = idx.artist;
+    const arr = Array.isArray(rawArt) ? rawArt : (rawArt ? [rawArt] : []);
+    artists.push(...arr);
+  }
+  return artists;
 }
 
 export async function getArtist(id: string): Promise<{ artist: SubsonicArtist; albums: SubsonicAlbum[] }> {

src/components/AlbumHeader.tsx

@@ -6,6 +6,7 @@ import CachedImage from './CachedImage';
 import CoverLightbox from './CoverLightbox';
 import { useTranslation } from 'react-i18next';
 import { useIsMobile } from '../hooks/useIsMobile';
+import { useThemeStore } from '../store/themeStore';
 import StarRating from './StarRating';
 import type { EntityRatingSupportLevel } from '../api/subsonic';
 import { useThemeStore } from '../store/themeStore';
@@ -129,6 +130,7 @@ export default function AlbumHeader({
   const totalDuration = songs.reduce((acc, s) => acc + s.duration, 0);
   const totalSize = songs.reduce((acc, s) => acc + (s.size ?? 0), 0);
   const formatLabel = [...new Set(songs.map(s => s.suffix).filter((f): f is string => !!f))].map(f => f.toUpperCase()).join(' / ');
+  const enableCoverArtBackground = useThemeStore(s => s.enableCoverArtBackground);
 
   return (
     <>

src/components/AlbumTrackList.tsx

@@ -10,6 +10,7 @@ import { AddToPlaylistSubmenu } from './ContextMenu';
 import { useIsMobile } from '../hooks/useIsMobile';
 import StarRating from './StarRating';
 import { useSelectionStore } from '../store/selectionStore';
+import { useThemeStore } from '../store/themeStore';
 
 function formatDuration(seconds: number): string {
   const h = Math.floor(seconds / 3600);
@@ -19,11 +20,11 @@ function formatDuration(seconds: number): string {
   return `${m}:${s.toString().padStart(2, '0')}`;
 }
 
-function codecLabel(song: { suffix?: string; bitRate?: number }): string {
+function codecLabel(song: { suffix?: string; bitRate?: number }, showBitrate: boolean): string {
   const parts: string[] = [];
   if (song.suffix) parts.push(song.suffix.toUpperCase());
-  if (song.bitRate) parts.push(`${song.bitRate}`);
+  if (showBitrate && song.bitRate) parts.push(`${song.bitRate} kbps`);
-  return parts.join(' ');
+  return parts.join(' · ');
 }
 
 // ── Column configuration ──────────────────────────────────────────────────────
@@ -108,6 +109,7 @@ const TrackRow = React.memo(function TrackRow({
 }: TrackRowProps) {
   const { t } = useTranslation();
   const navigate = useNavigate();
+  const showBitrate = useThemeStore(s => s.showBitrate);
   // Fine-grained: only re-renders when THIS row's selection boolean flips.
   const isSelected = useSelectionStore(s => s.selectedIds.has(song.id));
   const isActive = currentTrackId === song.id;
@@ -192,8 +194,8 @@ const TrackRow = React.memo(function TrackRow({
       case 'format':
         return (
           <div key="format" className="track-meta">
-            {(song.suffix || song.bitRate) && (
+            {(song.suffix || (showBitrate && song.bitRate)) && (
-              <span className="track-codec">{codecLabel(song)}</span>
+              <span className="track-codec">{codecLabel(song, showBitrate)}</span>
             )}
           </div>
         );

src/components/Hero.tsx

@@ -8,6 +8,7 @@ import { useTranslation } from 'react-i18next';
 import { playAlbum } from '../utils/playAlbum';
 import { useIsMobile } from '../hooks/useIsMobile';
 import { useAuthStore } from '../store/authStore';
+import { useThemeStore } from '../store/themeStore';
 import { filterAlbumsByMixRatings, getMixMinRatingsConfigFromAuth } from '../utils/mixRatingFilter';
 
 const INTERVAL_MS = 10000;
@@ -58,6 +59,7 @@ export default function Hero({ albums: albumsProp }: HeroProps = {}) {
   const isMobile = useIsMobile();
   const musicLibraryFilterVersion = useAuthStore(s => s.musicLibraryFilterVersion);
   const mixMinRatingFilterEnabled = useAuthStore(s => s.mixMinRatingFilterEnabled);
+  const enableCoverArtBackground = useThemeStore(s => s.enableCoverArtBackground);
   const mixMinRatingAlbum = useAuthStore(s => s.mixMinRatingAlbum);
   const mixMinRatingArtist = useAuthStore(s => s.mixMinRatingArtist);
   const [albums, setAlbums] = useState<SubsonicAlbum[]>([]);
@@ -141,8 +143,8 @@ export default function Hero({ albums: albumsProp }: HeroProps = {}) {
       onClick={() => navigate(`/album/${album.id}`)}
       style={{ cursor: 'pointer' }}
     >
-      <HeroBg url={stableBgUrl.current} />
+      {enableCoverArtBackground && <HeroBg url={stableBgUrl.current} />}
-      <div className="hero-overlay" aria-hidden="true" />
+      {enableCoverArtBackground && <div className="hero-overlay" aria-hidden="true" />}
 
       {/* key causes re-mount → animate-fade-in triggers on each album change */}
       <div className="hero-content animate-fade-in" key={album.id}>

src/components/Sidebar.tsx

@@ -3,6 +3,7 @@ import { createPortal } from 'react-dom';
 import { usePlayerStore } from '../store/playerStore';
 import { useOfflineStore } from '../store/offlineStore';
 import { useOfflineJobStore } from '../store/offlineJobStore';
+import { useDeviceSyncJobStore } from '../store/deviceSyncJobStore';
 import { useAuthStore } from '../store/authStore';
 import { useSidebarStore } from '../store/sidebarStore';
 import { NavLink } from 'react-router-dom';
@@ -50,6 +51,12 @@ export default function Sidebar({
   const offlineJobs = useOfflineJobStore(s => s.jobs);
   const cancelAllDownloads = useOfflineJobStore(s => s.cancelAllDownloads);
   const activeJobs = offlineJobs.filter(j => j.status === 'queued' || j.status === 'downloading');
+  const syncJobStatus = useDeviceSyncJobStore(s => s.status);
+  const syncJobDone   = useDeviceSyncJobStore(s => s.done);
+  const syncJobSkip   = useDeviceSyncJobStore(s => s.skipped);
+  const syncJobFail   = useDeviceSyncJobStore(s => s.failed);
+  const syncJobTotal  = useDeviceSyncJobStore(s => s.total);
+  const isSyncing     = syncJobStatus === 'running';
   const offlineAlbums = useOfflineStore(s => s.albums);
   const serverId = useAuthStore(s => s.activeServerId ?? '');
   const isLoggedIn = useAuthStore(s => s.isLoggedIn);
@@ -369,6 +376,19 @@ export default function Sidebar({
             </button>
           </div>
         )}
+
+        {isSyncing && (
+          <div
+            className={`sidebar-offline-queue sidebar-sync-queue ${isCollapsed ? 'sidebar-offline-queue--collapsed' : ''}`}
+            data-tooltip={isCollapsed ? t('sidebar.syncingTracks', { done: syncJobDone + syncJobSkip + syncJobFail, total: syncJobTotal }) : undefined}
+            data-tooltip-pos="right"
+          >
+            <HardDriveUpload size={isCollapsed ? 18 : 14} className="spin-slow" />
+            {!isCollapsed && (
+              <span>{t('sidebar.syncingTracks', { done: syncJobDone + syncJobSkip + syncJobFail, total: syncJobTotal })}</span>
+            )}
+          </div>
+        )}
       </nav>
     </aside>
   );

src/components/ThemePicker.tsx

@@ -93,6 +93,19 @@ export const THEME_GROUPS: { group: string; themes: ThemeDef[] }[] = [
       { id: 'vintage-tube-radio', label: 'Tube Radio',  bg: '#3E2723', card: '#1E110A', accent: '#FF6F00' },
     ],
   },
+  {
+    group: 'COMMUNITY',
+    themes: [
+      { id: 'amber-night', label: 'Amber Night', bg: '#1a1410', card: '#201a12', accent: '#d4a96a' },
+      { id: 'amoled-black-pure', label: 'AMOLED Black Pure', bg: '#000000', card: '#000000', accent: '#ffffff' },
+      { id: 'ice-blue', label: 'Ice Blue', bg: '#0e1d28', card: '#132430', accent: '#7dd3e8' },
+      { id: 'midnight-blue', label: 'Midnight Blue', bg: '#0d1420', card: '#111a28', accent: '#60a5fa' },
+      { id: 'monochrome', label: 'Monochrome Dark', bg: '#161616', card: '#1c1c1c', accent: '#c0c0c0' },
+      { id: 'phosphor-green', label: 'Phosphor Green', bg: '#0d1a0d', card: '#111f11', accent: '#4ade80' },
+      { id: 'rose-dark', label: 'Rose Dark', bg: '#1a0d14', card: '#20111a', accent: '#f472b6' },
+      { id: 'sepia-dark', label: 'Sepia Dark', bg: '#1e1a14', card: '#252018', accent: '#c8b89a' },
+    ],
+  },
   {
     group: 'Mediaplayer',
     themes: [

src/components/WaveformSeek.tsx

@@ -869,6 +869,17 @@ export default function WaveformSeek({ trackId }: Props) {
     return () => ro.disconnect();
   }, [seekbarStyle]);
 
+  // Theme change observer — redraw canvas when theme changes.
+  useEffect(() => {
+    const canvas = canvasRef.current;
+    if (!canvas) return;
+    const observer = new MutationObserver(() => {
+      drawSeekbar(canvas, seekbarStyle, heightsRef.current, progressRef.current, bufferedRef.current, animStateRef.current);
+    });
+    observer.observe(document.documentElement, { attributes: true, attributeFilter: ['data-theme'] });
+    return () => observer.disconnect();
+  }, [seekbarStyle]);
+
   const trackIdRef = useRef(trackId);
   trackIdRef.current = trackId;
   const seekRef = useRef(seek);

src/locales/de.ts

@@ -17,6 +17,7 @@ export const deTranslation = {
     expand: 'Sidebar einblenden',
     collapse: 'Sidebar ausblenden',
     downloadingTracks: '{{n}} Tracks werden gecacht…',
+    syncingTracks: 'Synchronisiere {{done}}/{{total}}…',
     cancelDownload: 'Download abbrechen',
     offlineLibrary: 'Offline-Bibliothek',
     genres: 'Genres',
@@ -661,6 +662,13 @@ export const deTranslation = {
     themeSchedulerNightTheme: 'Nacht-Theme',
     themeSchedulerNightStart: 'Nacht beginnt um',
     themeSchedulerActiveHint: 'Theme-Zeitplan ist aktiv - Themes werden automatisch gewechselt.',
+    visualOptionsTitle: 'Visuelle Optionen',
+    coverArtBackground: 'Cover-Hintergrund',
+    coverArtBackgroundSub: 'Zeigt verschwommenes Cover als Hintergrund in Album/Playlist-Kopfzeilen',
+    playlistCoverPhoto: 'Playlist-Coverfoto',
+    playlistCoverPhotoSub: 'Zeigt Coverfoto-Raster in der Playlist-Detailansicht',
+    showBitrate: 'Bitrate anzeigen',
+    showBitrateSub: 'Audio-Bitrate in Track-Listen anzeigen',
     uiScaleTitle: 'Interface-Skalierung',
     uiScaleLabel: 'Zoom',
   },
@@ -1026,8 +1034,15 @@ export const deTranslation = {
     title: 'Gerätesync',
     targetFolder: 'Zielordner',
     noFolderChosen: 'Kein Ordner gewählt',
+    selectDrive: 'Laufwerk auswählen…',
+    refreshDrives: 'Laufwerke aktualisieren',
+    noDrivesDetected: 'Keine Wechseldatenträger erkannt',
+    browseManual: 'Manuell durchsuchen…',
+    free: 'frei',
+    notMountedVolume: 'Ziel befindet sich nicht auf einem eingehängten Laufwerk. Das Gerät wurde möglicherweise getrennt.',
     chooseFolder: 'Auswählen…',
     filenameTemplate: 'Dateinamen-Vorlage',
+    targetDevice: 'Zielgerät',
     templateHint: 'Variablen: {artist}, {album}, {title}, {track_number}, {disc_number}, {year}',
     onDevice: 'Auf dem Gerät',
     addSources: 'Hinzufügen…',
@@ -1045,6 +1060,10 @@ export const deTranslation = {
     tabArtists: 'Künstler',
     searchPlaceholder: 'Suche…',
     syncButton: 'Auf Gerät übertragen',
+    actionTransfer: 'Auf Gerät übertragen',
+    actionDelete: 'Vom Gerät löschen',
+    actionApplyAll: 'Änderungen synchronisieren',
+    templatePreview: 'Vorschau',
     cancel: 'Abbrechen',
     noTargetDir: 'Bitte zuerst einen Zielordner auswählen.',
     noSources: 'Bitte mindestens eine Quelle auswählen.',
@@ -1052,5 +1071,25 @@ export const deTranslation = {
     fetchError: 'Fehler beim Laden der Tracks vom Server.',
     syncComplete: 'Übertragung abgeschlossen.',
     dismiss: 'Schließen',
+    colStatus: 'Status',
+    statusSynced: 'Synchronisiert',
+    statusPending: 'Ausstehend',
+    statusDeletion: 'Löschung',
+    markForDeletion: 'Zur Löschung markieren',
+    removeSource: 'Entfernen',
+    undoDeletion: 'Löschung rückgängig',
+    syncInBackground: 'Sync gestartet — du kannst die Seite verlassen.',
+    syncInProgress: '{{done}} / {{total}} Tracks…',
+    syncSummary: 'Sync-Zusammenfassung',
+    calculating: 'Payload wird berechnet…',
+    filesToAdd: 'Hinzuzufügende Dateien:',
+    filesToDelete: 'Zu löschende Dateien:',
+    netChange: 'Nettoänderung:',
+    availableSpace: 'Verfügbarer Speicher:',
+    spaceWarning: 'Warnung: Das Zielgerät hat nicht genug gemeldeten Speicherplatz.',
+    proceed: 'Sync durchführen',
+    notEnoughSpace: 'Nicht genug physischer Speicherplatz erkannt!',
+    liveSearch: 'Live',
+    randomAlbumsLabel: 'Zufallsalben',
   },
 };

src/locales/en.ts

@@ -18,6 +18,7 @@ export const enTranslation = {
     collapse: 'Collapse Sidebar',
 
     downloadingTracks: 'Caching {{n}} tracks…',
+    syncingTracks: 'Syncing {{done}}/{{total}}…',
     cancelDownload: 'Cancel download',
     offlineLibrary: 'Offline Library',
     genres: 'Genres',
@@ -663,6 +664,13 @@ export const enTranslation = {
     themeSchedulerNightTheme: 'Night Theme',
     themeSchedulerNightStart: 'Night Starts At',
     themeSchedulerActiveHint: 'Theme Scheduler is active - theme changes are managed automatically.',
+    visualOptionsTitle: 'Visual Options',
+    coverArtBackground: 'Cover Art Background',
+    coverArtBackgroundSub: 'Show blurred cover art as background in album/playlist headers',
+    playlistCoverPhoto: 'Playlist Cover Photo',
+    playlistCoverPhotoSub: 'Show cover photo grid in playlist detail view',
+    showBitrate: 'Show Bitrate',
+    showBitrateSub: 'Display audio bitrate in track listings',
     uiScaleTitle: 'Interface Scale',
     uiScaleLabel: 'Zoom',
   },
@@ -1028,15 +1036,23 @@ export const enTranslation = {
     title: 'Device Sync',
     targetFolder: 'Target Folder',
     noFolderChosen: 'No folder chosen',
+    selectDrive: 'Select a drive…',
+    refreshDrives: 'Refresh drives',
+    noDrivesDetected: 'No removable drives detected',
+    browseManual: 'Browse manually…',
+    free: 'free',
+    notMountedVolume: 'Target is not on a mounted volume. The drive may have been disconnected.',
     chooseFolder: 'Choose…',
     filenameTemplate: 'Filename Template',
+    targetDevice: 'Target Device',
     templateHint: 'Variables: {artist}, {album}, {title}, {track_number}, {disc_number}, {year}',
-    onDevice: 'On Device',
+    onDevice: 'Device Manager',
     addSources: 'Add…',
     colName: 'Name',
     colType: 'Type',
+    colStatus: 'Status',
     syncResult: '{{done}} transferred, {{skipped}} already up to date ({{total}} total)',
-    deleteFromDevice: 'Delete from device ({{count}})',
+    deleteFromDevice: 'Mark for deletion ({{count}})',
     confirmDelete: 'Delete {{count}} item(s) from the device: {{names}}?',
     deleteComplete: '{{count}} item(s) removed from device.',
     selectedSources: 'Selected Sources',
@@ -1047,6 +1063,10 @@ export const enTranslation = {
     tabArtists: 'Artists',
     searchPlaceholder: 'Search…',
     syncButton: 'Sync to Device',
+    actionTransfer: 'Transfer to Device',
+    actionDelete: 'Delete from Device',
+    actionApplyAll: 'Apply All Changes',
+    templatePreview: 'Preview',
     cancel: 'Cancel',
     noTargetDir: 'Please choose a target folder first.',
     noSources: 'Please select at least one source.',
@@ -1054,5 +1074,25 @@ export const enTranslation = {
     fetchError: 'Failed to fetch tracks from server.',
     syncComplete: 'Sync complete.',
     dismiss: 'Dismiss',
+    statusSynced: 'Synced',
+    statusPending: 'Pending',
+    statusDeletion: 'Deletion',
+    markForDeletion: 'Mark for deletion',
+    undoDeletion: 'Undo deletion',
+    removeSource: 'Remove',
+    syncInBackground: 'Sync started in background — you can navigate away.',
+    syncInProgress: '{{done}} / {{total}} tracks…',
+    scanningDevice: 'Scanning device…',
+    syncSummary: 'Sync Summary',
+    calculating: 'Calculating required payload…',
+    filesToAdd: 'Files to Add:',
+    filesToDelete: 'Files to Delete:',
+    netChange: 'Net Change:',
+    availableSpace: 'Available Disk Space:',
+    spaceWarning: 'Warning: Target device does not have enough reported space.',
+    proceed: 'Proceed with Sync',
+    notEnoughSpace: 'Not enough physical disk space detected!',
+    liveSearch: 'Live',
+    randomAlbumsLabel: 'Random Albums',
   },
 };

src/locales/es.ts

@@ -18,6 +18,7 @@ export const esTranslation = {
     collapse: 'Colapsar Barra Lateral',
 
     downloadingTracks: 'Descargando {{n}} pistas…',
+    syncingTracks: 'Sincronizando {{done}}/{{total}}…',
     cancelDownload: 'Cancelar descarga',
     offlineLibrary: 'Biblioteca Offline',
     genres: 'Géneros',
@@ -664,6 +665,13 @@ export const esTranslation = {
     themeSchedulerNightTheme: 'Tema de Noche',
     themeSchedulerNightStart: 'Comienza de Noche A las',
     themeSchedulerActiveHint: 'El Programador de Temas está activo — los cambios de tema se manejan automáticamente.',
+    visualOptionsTitle: 'Opciones Visuales',
+    coverArtBackground: 'Fondo de Portada',
+    coverArtBackgroundSub: 'Mostrar portada desenfocada como fondo en encabezados de álbumes y listas de reproducción',
+    playlistCoverPhoto: 'Foto de Portada de Playlist',
+    playlistCoverPhotoSub: 'Mostrar cuadrícula de fotos de portada en la vista detallada de playlists',
+    showBitrate: 'Mostrar Bitrate',
+    showBitrateSub: 'Mostrar bitrate de audio en las listas de pistas',
     uiScaleTitle: 'Escala de Interfaz',
     uiScaleLabel: 'Zoom',
   },
@@ -1029,8 +1037,15 @@ export const esTranslation = {
     title: 'Sincronizar dispositivo',
     targetFolder: 'Carpeta de destino',
     noFolderChosen: 'Ninguna carpeta seleccionada',
+    selectDrive: 'Seleccionar unidad…',
+    refreshDrives: 'Actualizar unidades',
+    noDrivesDetected: 'No se detectaron unidades extraíbles',
+    browseManual: 'Explorar manualmente…',
+    free: 'libre',
+    notMountedVolume: 'El destino no está en un volumen montado. La unidad puede haberse desconectado.',
     chooseFolder: 'Elegir…',
     filenameTemplate: 'Plantilla de nombre de archivo',
+    targetDevice: 'Dispositivo de destino',
     templateHint: 'Variables: {artist}, {album}, {title}, {track_number}, {disc_number}, {year}',
     cleanupButton: 'Eliminar archivos fuera de la selección',
     cleanupNothingToDelete: 'Nada que eliminar — el dispositivo ya está sincronizado.',
@@ -1044,6 +1059,10 @@ export const esTranslation = {
     tabArtists: 'Artistas',
     searchPlaceholder: 'Buscar…',
     syncButton: 'Sincronizar al dispositivo',
+    actionTransfer: 'Transferir al dispositivo',
+    actionDelete: 'Eliminar del dispositivo',
+    actionApplyAll: 'Aplicar todos los cambios',
+    templatePreview: 'Vista previa',
     cancel: 'Cancelar',
     noTargetDir: 'Por favor, elige primero una carpeta de destino.',
     noSources: 'Por favor, selecciona al menos una fuente.',
@@ -1051,5 +1070,33 @@ export const esTranslation = {
     fetchError: 'Error al obtener pistas del servidor.',
     syncComplete: 'Sincronización completada.',
     dismiss: 'Cerrar',
+    colName: 'Nombre',
+    colType: 'Tipo',
+    colStatus: 'Estado',
+    onDevice: 'Gestor de dispositivo',
+    addSources: 'Agregar…',
+    syncResult: '{{done}} transferido(s), {{skipped}} ya actualizado(s) ({{total}} total)',
+    deleteFromDevice: 'Marcar para eliminar ({{count}})',
+    confirmDelete: '¿Eliminar {{count}} elemento(s) del dispositivo: {{names}}?',
+    deleteComplete: '{{count}} elemento(s) eliminado(s) del dispositivo.',
+    statusSynced: 'Sincronizado',
+    statusPending: 'Pendiente',
+    statusDeletion: 'Eliminación',
+    markForDeletion: 'Marcar para eliminar',
+    removeSource: 'Eliminar',
+    undoDeletion: 'Deshacer eliminación',
+    syncInBackground: 'Sincronización iniciada en segundo plano — puedes navegar a otro lugar.',
+    syncInProgress: '{{done}} / {{total}} pistas…',
+    syncSummary: 'Resumen de sincronización',
+    calculating: 'Calculando la carga útil requerida…',
+    filesToAdd: 'Archivos a agregar:',
+    filesToDelete: 'Archivos a eliminar:',
+    netChange: 'Cambio neto:',
+    availableSpace: 'Espacio disponible en disco:',
+    spaceWarning: 'Advertencia: El dispositivo de destino no tiene suficiente espacio reportado.',
+    proceed: 'Proceder con la sincronización',
+    notEnoughSpace: '¡Espacio físico en disco insuficiente detectado!',
+    liveSearch: 'Live',
+    randomAlbumsLabel: 'Álbumes aleatorios',
   },
 };

src/locales/fr.ts

@@ -17,6 +17,7 @@ export const frTranslation = {
     expand: 'Développer la barre latérale',
     collapse: 'Réduire la barre latérale',
     downloadingTracks: '{{n}} pistes en cache…',
+    syncingTracks: 'Synchro {{done}}/{{total}}…',
     cancelDownload: 'Annuler le téléchargement',
     offlineLibrary: 'Bibliothèque hors ligne',
     genres: 'Genres',
@@ -659,6 +660,13 @@ export const frTranslation = {
     themeSchedulerNightTheme: 'Thème de nuit',
     themeSchedulerNightStart: 'Début de la nuit',
     themeSchedulerActiveHint: 'Le planificateur de thème est actif - les thèmes changent automatiquement.',
+    visualOptionsTitle: 'Options Visuelles',
+    coverArtBackground: "Fond d'Art de Poche",
+    coverArtBackgroundSub: "Afficher la pochette floutée comme fond dans les en-têtes d'albums et de playlists",
+    playlistCoverPhoto: 'Photo de Couverture de Playlist',
+    playlistCoverPhotoSub: 'Afficher la grille de photos de couverture dans la vue détaillée des playlists',
+    showBitrate: 'Afficher le Débit',
+    showBitrateSub: 'Afficher le débit audio dans les listes de pistes',
     uiScaleTitle: "Mise à l'échelle de l'interface",
     uiScaleLabel: 'Zoom',
   },
@@ -1024,8 +1032,15 @@ export const frTranslation = {
     title: 'Sync appareil',
     targetFolder: 'Dossier cible',
     noFolderChosen: 'Aucun dossier sélectionné',
+    selectDrive: 'Sélectionner un lecteur…',
+    refreshDrives: 'Actualiser les lecteurs',
+    noDrivesDetected: 'Aucun lecteur amovible détecté',
+    browseManual: 'Parcourir manuellement…',
+    free: 'libre',
+    notMountedVolume: 'La cible n\u0027est pas sur un volume monté. Le lecteur a peut-être été déconnecté.',
     chooseFolder: 'Choisir…',
     filenameTemplate: 'Modèle de nom de fichier',
+    targetDevice: 'Appareil cible',
     templateHint: 'Variables : {artist}, {album}, {title}, {track_number}, {disc_number}, {year}',
     cleanupButton: 'Supprimer les fichiers absents',
     cleanupNothingToDelete: 'Rien à supprimer — l\'appareil est déjà synchronisé.',
@@ -1039,6 +1054,10 @@ export const frTranslation = {
     tabArtists: 'Artistes',
     searchPlaceholder: 'Rechercher…',
     syncButton: 'Synchroniser vers l\'appareil',
+    actionTransfer: 'Transférer vers l\'appareil',
+    actionDelete: 'Supprimer de l\'appareil',
+    actionApplyAll: 'Appliquer toutes les modifications',
+    templatePreview: 'Aperçu',
     cancel: 'Annuler',
     noTargetDir: 'Veuillez d\'abord choisir un dossier cible.',
     noSources: 'Veuillez sélectionner au moins une source.',
@@ -1046,5 +1065,33 @@ export const frTranslation = {
     fetchError: 'Échec du chargement des pistes depuis le serveur.',
     syncComplete: 'Synchronisation terminée.',
     dismiss: 'Fermer',
+    colName: 'Nom',
+    colType: 'Type',
+    colStatus: 'Statut',
+    onDevice: 'Gestionnaire d\'appareil',
+    addSources: 'Ajouter…',
+    syncResult: '{{done}} transféré(s), {{skipped}} déjà à jour ({{total}} au total)',
+    deleteFromDevice: 'Marquer pour suppression ({{count}})',
+    confirmDelete: 'Supprimer {{count}} élément(s) du périphérique : {{names}} ?',
+    deleteComplete: '{{count}} élément(s) supprimé(s) du périphérique.',
+    statusSynced: 'Synchronisé',
+    statusPending: 'En attente',
+    statusDeletion: 'Suppression',
+    markForDeletion: 'Marquer pour suppression',
+    removeSource: 'Supprimer',
+    undoDeletion: 'Annuler la suppression',
+    syncInBackground: 'Sync démarré en arrière-plan — vous pouvez naviguer ailleurs.',
+    syncInProgress: '{{done}} / {{total}} pistes…',
+    syncSummary: 'Résumé de la synchronisation',
+    calculating: 'Calcul de la charge utile…',
+    filesToAdd: 'Fichiers à ajouter :',
+    filesToDelete: 'Fichiers à supprimer :',
+    netChange: 'Variation nette :',
+    availableSpace: 'Espace disque disponible :',
+    spaceWarning: 'Attention : L\'appareil cible ne dispose pas d\'assez d\'espace signalé.',
+    proceed: 'Procéder à la synchronisation',
+    notEnoughSpace: 'Espace disque physique insuffisant détecté !',
+    liveSearch: 'Live',
+    randomAlbumsLabel: 'Albums aléatoires',
   },
 };

src/locales/nb.ts

@@ -17,6 +17,7 @@ export const nbTranslation = {
     expand: 'Utvid sidefelt',
     collapse: 'Skjul sidefelt',
     downloadingTracks: 'Bufre {{n}} spor…',
+    syncingTracks: 'Synkroniserer {{done}}/{{total}}…',
     cancelDownload: 'Avbryt nedlasting',
     offlineLibrary: 'Frakoblet bibliotek',
     genres: 'Sjangere',
@@ -658,6 +659,13 @@ export const nbTranslation = {
     themeSchedulerNightTheme: 'Natttema',
     themeSchedulerNightStart: 'Natt starter kl.',
     themeSchedulerActiveHint: 'Temaplanlegger er aktiv - temaer byttes automatisk.',
+    visualOptionsTitle: 'Visuelle Alternativer',
+    coverArtBackground: 'Cover-bakgrunn',
+    coverArtBackgroundSub: 'Vis uskarpt cover som bakgrunn i album/playlist-overskrifter',
+    playlistCoverPhoto: 'Playlist-coverfoto',
+    playlistCoverPhotoSub: 'Vis coverfoto-rutenett i playlist-detailedvisning',
+    showBitrate: 'Vis Bitrate',
+    showBitrateSub: 'Vis audio-bitrate i sporlister',
     uiScaleTitle: 'Grensesnittskala',
     uiScaleLabel: 'Zoom',
   },
@@ -1023,8 +1031,15 @@ export const nbTranslation = {
     title: 'Enhetssynk',
     targetFolder: 'Målmappe',
     noFolderChosen: 'Ingen mappe valgt',
+    selectDrive: 'Velg en stasjon…',
+    refreshDrives: 'Oppdater stasjoner',
+    noDrivesDetected: 'Ingen flyttbare stasjoner oppdaget',
+    browseManual: 'Bla manuelt…',
+    free: 'ledig',
+    notMountedVolume: 'Målet er ikke på en montert stasjon. Enheten kan ha blitt koblet fra.',
     chooseFolder: 'Velg…',
     filenameTemplate: 'Filnavnmal',
+    targetDevice: 'Målenhet',
     templateHint: 'Variabler: {artist}, {album}, {title}, {track_number}, {disc_number}, {year}',
     cleanupButton: 'Fjern filer som ikke er i utvalget',
     cleanupNothingToDelete: 'Ingenting å fjerne — enheten er allerede synkronisert.',
@@ -1038,6 +1053,10 @@ export const nbTranslation = {
     tabArtists: 'Artister',
     searchPlaceholder: 'Søk…',
     syncButton: 'Synkroniser til enhet',
+    actionTransfer: 'Overfør til enhet',
+    actionDelete: 'Slett fra enhet',
+    actionApplyAll: 'Bruk alle endringer',
+    templatePreview: 'Forhåndsvisning',
     cancel: 'Avbryt',
     noTargetDir: 'Velg en målmappe først.',
     noSources: 'Velg minst én kilde.',
@@ -1045,5 +1064,33 @@ export const nbTranslation = {
     fetchError: 'Kunne ikke hente spor fra serveren.',
     syncComplete: 'Synkronisering fullført.',
     dismiss: 'Lukk',
+    colName: 'Navn',
+    colType: 'Type',
+    colStatus: 'Status',
+    onDevice: 'Enhetsbehandling',
+    addSources: 'Legg til…',
+    syncResult: '{{done}} overført, {{skipped}} allerede oppdatert ({{total}} totalt)',
+    deleteFromDevice: 'Merk for sletting ({{count}})',
+    confirmDelete: 'Slette {{count}} element(er) fra enheten: {{names}}?',
+    deleteComplete: '{{count}} element(er) fjernet fra enheten.',
+    statusSynced: 'Synkronisert',
+    statusPending: 'Venter',
+    statusDeletion: 'Sletting',
+    markForDeletion: 'Merk for sletting',
+    removeSource: 'Fjern',
+    undoDeletion: 'Angre sletting',
+    syncInBackground: 'Synkronisering startet i bakgrunnen — du kan navigere bort.',
+    syncInProgress: '{{done}} / {{total}} spor…',
+    syncSummary: 'Synkroniseringssammendrag',
+    calculating: 'Beregner nødvendig nyttelast…',
+    filesToAdd: 'Filer som skal legges til:',
+    filesToDelete: 'Filer som skal slettes:',
+    netChange: 'Nettoendring:',
+    availableSpace: 'Tilgjengelig diskplass:',
+    spaceWarning: 'Advarsel: Målenheten har ikke nok rapportert plass.',
+    proceed: 'Fortsett med synkronisering',
+    notEnoughSpace: 'Ikke nok fysisk diskplass oppdaget!',
+    liveSearch: 'Live',
+    randomAlbumsLabel: 'Tilfeldige album',
   },
 };

src/locales/nl.ts

@@ -17,6 +17,7 @@ export const nlTranslation = {
     expand: 'Zijbalk uitklappen',
     collapse: 'Zijbalk inklappen',
     downloadingTracks: '{{n}} nummers worden gecached…',
+    syncingTracks: 'Synchroniseren {{done}}/{{total}}…',
     cancelDownload: 'Download annuleren',
     offlineLibrary: 'Offline bibliotheek',
     genres: 'Genres',
@@ -658,6 +659,13 @@ export const nlTranslation = {
     themeSchedulerNightTheme: 'Nachtthema',
     themeSchedulerNightStart: 'Nacht begint om',
     themeSchedulerActiveHint: "Thema-planner is actief - thema's worden automatisch gewisseld.",
+    visualOptionsTitle: 'Visuele Opties',
+    coverArtBackground: 'Cover Achtergrond',
+    coverArtBackgroundSub: 'Toon vervaagde cover als achtergrond in album/playlist headers',
+    playlistCoverPhoto: 'Playlist Coverfoto',
+    playlistCoverPhotoSub: 'Toon coverfoto raster in playlist detailweergave',
+    showBitrate: 'Toon Bitrate',
+    showBitrateSub: 'Toon audio bitrate in tracklijsten',
     uiScaleTitle: 'Interface schaal',
     uiScaleLabel: 'Zoom',
   },
@@ -1021,8 +1029,15 @@ export const nlTranslation = {
     title: 'Apparaatsync',
     targetFolder: 'Doelmap',
     noFolderChosen: 'Geen map gekozen',
+    selectDrive: 'Selecteer een schijf…',
+    refreshDrives: 'Schijven vernieuwen',
+    noDrivesDetected: 'Geen verwijderbare schijven gedetecteerd',
+    browseManual: 'Handmatig bladeren…',
+    free: 'vrij',
+    notMountedVolume: 'Het doel bevindt zich niet op een gekoppeld volume. De schijf is mogelijk losgekoppeld.',
     chooseFolder: 'Kiezen…',
     filenameTemplate: 'Bestandsnaamsjabloon',
+    targetDevice: 'Doelapparaat',
     templateHint: 'Variabelen: {artist}, {album}, {title}, {track_number}, {disc_number}, {year}',
     cleanupButton: 'Niet-geselecteerde bestanden verwijderen',
     cleanupNothingToDelete: 'Niets te verwijderen — apparaat is al gesynchroniseerd.',
@@ -1036,6 +1051,10 @@ export const nlTranslation = {
     tabArtists: 'Artiesten',
     searchPlaceholder: 'Zoeken…',
     syncButton: 'Synchroniseren naar apparaat',
+    actionTransfer: 'Overdragen naar apparaat',
+    actionDelete: 'Verwijderen van apparaat',
+    actionApplyAll: 'Alle wijzigingen toepassen',
+    templatePreview: 'Voorbeeld',
     cancel: 'Annuleren',
     noTargetDir: 'Kies eerst een doelmap.',
     noSources: 'Selecteer minimaal één bron.',
@@ -1043,5 +1062,33 @@ export const nlTranslation = {
     fetchError: 'Ophalen van nummers van de server mislukt.',
     syncComplete: 'Synchronisatie voltooid.',
     dismiss: 'Sluiten',
+    colName: 'Naam',
+    colType: 'Type',
+    colStatus: 'Status',
+    onDevice: 'Apparaatbeheer',
+    addSources: 'Toevoegen…',
+    syncResult: '{{done}} overgedragen, {{skipped}} al up-to-date ({{total}} totaal)',
+    deleteFromDevice: 'Markeren voor verwijdering ({{count}})',
+    confirmDelete: '{{count}} item(s) van het apparaat verwijderen: {{names}}?',
+    deleteComplete: '{{count}} item(s) van het apparaat verwijderd.',
+    statusSynced: 'Gesynchroniseerd',
+    statusPending: 'In behandeling',
+    statusDeletion: 'Verwijdering',
+    markForDeletion: 'Markeren voor verwijdering',
+    removeSource: 'Verwijderen',
+    undoDeletion: 'Verwijdering ongedaan maken',
+    syncInBackground: 'Sync gestart op achtergrond — u kunt navigeren.',
+    syncInProgress: '{{done}} / {{total}} nummers…',
+    syncSummary: 'Synchronisatieoverzicht',
+    calculating: 'Vereiste payload berekenen…',
+    filesToAdd: 'Te toevoegen bestanden:',
+    filesToDelete: 'Te verwijderen bestanden:',
+    netChange: 'Nettoverandering:',
+    availableSpace: 'Beschikbare schijfruimte:',
+    spaceWarning: 'Waarschuwing: Het doelapparaat heeft niet genoeg gerapporteerde ruimte.',
+    proceed: 'Doorgaan met synchronisatie',
+    notEnoughSpace: 'Onvoldoende fysieke schijfruimte gedetecteerd!',
+    liveSearch: 'Live',
+    randomAlbumsLabel: 'Willekeurige albums',
   },
 };

src/locales/ru.ts

@@ -18,6 +18,7 @@ export const ruTranslation = {
     expand: 'Развернуть боковую панель',
     collapse: 'Свернуть боковую панель',
     downloadingTracks: 'Кэширование {{n}} треков…',
+    syncingTracks: 'Синхронизация {{done}}/{{total}}…',
     cancelDownload: 'Отменить загрузку',
     offlineLibrary: 'Офлайн-библиотека',
     genres: 'Жанры',
@@ -686,6 +687,13 @@ export const ruTranslation = {
     themeSchedulerNightTheme: 'Ночная тема',
     themeSchedulerNightStart: 'Ночь начинается в',
     themeSchedulerActiveHint: 'Расписание тем активно - темы переключаются автоматически.',
+    visualOptionsTitle: 'Визуальные Настройки',
+    coverArtBackground: 'Фон Обложки',
+    coverArtBackgroundSub: 'Показывать размытую обложку как фон в заголовках альбомов и плейлистов',
+    playlistCoverPhoto: 'Обложка Плейлиста',
+    playlistCoverPhotoSub: 'Показывать сетку обложек в детальном виде плейлиста',
+    showBitrate: 'Показывать Битрейт',
+    showBitrateSub: 'Отображать битрейт аудио в списках треков',
     uiScaleTitle: 'Масштаб интерфейса',
     uiScaleLabel: 'Масштаб',
   },
@@ -1082,8 +1090,15 @@ export const ruTranslation = {
     title: 'Синхронизация устройства',
     targetFolder: 'Папка назначения',
     noFolderChosen: 'Папка не выбрана',
+    selectDrive: 'Выберите диск…',
+    refreshDrives: 'Обновить диски',
+    noDrivesDetected: 'Съёмные диски не обнаружены',
+    browseManual: 'Обзор вручную…',
+    free: 'свободно',
+    notMountedVolume: 'Цель не находится на смонтированном томе. Диск мог быть отключён.',
     chooseFolder: 'Выбрать…',
     filenameTemplate: 'Шаблон имени файла',
+    targetDevice: 'Целевое устройство',
     templateHint: 'Переменные: {artist}, {album}, {title}, {track_number}, {disc_number}, {year}',
     cleanupButton: 'Удалить файлы вне выборки',
     cleanupNothingToDelete: 'Нечего удалять — устройство уже синхронизировано.',
@@ -1097,6 +1112,10 @@ export const ruTranslation = {
     tabArtists: 'Исполнители',
     searchPlaceholder: 'Поиск…',
     syncButton: 'Синхронизировать на устройство',
+    actionTransfer: 'Перенести на устройство',
+    actionDelete: 'Удалить с устройства',
+    actionApplyAll: 'Применить все изменения',
+    templatePreview: 'Предпросмотр',
     cancel: 'Отмена',
     noTargetDir: 'Сначала выберите папку назначения.',
     noSources: 'Выберите хотя бы один источник.',
@@ -1104,5 +1123,33 @@ export const ruTranslation = {
     fetchError: 'Ошибка загрузки треков с сервера.',
     syncComplete: 'Синхронизация завершена.',
     dismiss: 'Закрыть',
+    colName: 'Название',
+    colType: 'Тип',
+    colStatus: 'Статус',
+    onDevice: 'Управление устройством',
+    addSources: 'Добавить…',
+    syncResult: '{{done}} перенесено, {{skipped}} уже актуально ({{total}} всего)',
+    deleteFromDevice: 'Пометить для удаления ({{count}})',
+    confirmDelete: 'Удалить {{count}} запись(ей) с устройства: {{names}}?',
+    deleteComplete: '{{count}} запись(ей) удалено с устройства.',
+    statusSynced: 'Синхронизировано',
+    statusPending: 'Ожидает',
+    statusDeletion: 'Удаление',
+    markForDeletion: 'Пометить для удаления',
+    removeSource: 'Удалить',
+    undoDeletion: 'Отменить удаление',
+    syncInBackground: 'Синхронизация запущена в фоне — можно перейти в другой раздел.',
+    syncInProgress: '{{done}} / {{total}} треков…',
+    syncSummary: 'Сводка синхронизации',
+    calculating: 'Вычисление необходимых данных…',
+    filesToAdd: 'Файлы для добавления:',
+    filesToDelete: 'Файлы для удаления:',
+    netChange: 'Чистое изменение:',
+    availableSpace: 'Доступное место на диске:',
+    spaceWarning: 'Предупреждение: на целевом устройстве недостаточно сообщаемого места.',
+    proceed: 'Продолжить синхронизацию',
+    notEnoughSpace: 'Обнаружено недостаточно физического места на диске!',
+    liveSearch: 'Live',
+    randomAlbumsLabel: 'Случайные альбомы',
   },
 };

src/locales/zh.ts

@@ -17,6 +17,7 @@ export const zhTranslation = {
     expand: '展开侧边栏',
     collapse: '收起侧边栏',
     downloadingTracks: '正在缓存 {{n}} 首歌曲…',
+    syncingTracks: '同步中 {{done}}/{{total}}…',
     cancelDownload: '取消下载',
     offlineLibrary: '离线音乐库',
     genres: '流派',
@@ -654,6 +655,13 @@ export const zhTranslation = {
     themeSchedulerNightTheme: '夜晚主题',
     themeSchedulerNightStart: '夜晚开始时间',
     themeSchedulerActiveHint: '主题定时器已启用 - 主题将自动切换。',
+    visualOptionsTitle: '视觉选项',
+    coverArtBackground: '封面背景',
+    coverArtBackgroundSub: '在专辑/播放列表标题中显示模糊的封面作为背景',
+    playlistCoverPhoto: '播放列表封面照片',
+    playlistCoverPhotoSub: '在播放列表详细视图中显示封面照片网格',
+    showBitrate: '显示比特率',
+    showBitrateSub: '在曲目列表中显示音频比特率',
     uiScaleTitle: '界面缩放',
     uiScaleLabel: '缩放',
   },
@@ -1017,8 +1025,15 @@ export const zhTranslation = {
     title: '设备同步',
     targetFolder: '目标文件夹',
     noFolderChosen: '未选择文件夹',
+    selectDrive: '选择驱动器…',
+    refreshDrives: '刷新驱动器',
+    noDrivesDetected: '未检测到可移动驱动器',
+    browseManual: '手动浏览…',
+    free: '可用',
+    notMountedVolume: '目标不在已挂载的卷上。驱动器可能已断开。',
     chooseFolder: '选择…',
     filenameTemplate: '文件名模板',
+    targetDevice: '目标设备',
     templateHint: '变量：{artist}、{album}、{title}、{track_number}、{disc_number}、{year}',
     cleanupButton: '删除不在选择范围内的文件',
     cleanupNothingToDelete: '无需删除 — 设备已同步。',
@@ -1032,6 +1047,10 @@ export const zhTranslation = {
     tabArtists: '艺术家',
     searchPlaceholder: '搜索…',
     syncButton: '同步到设备',
+    actionTransfer: '传输到设备',
+    actionDelete: '从设备删除',
+    actionApplyAll: '应用所有更改',
+    templatePreview: '预览',
     cancel: '取消',
     noTargetDir: '请先选择目标文件夹。',
     noSources: '请至少选择一个来源。',
@@ -1039,5 +1058,33 @@ export const zhTranslation = {
     fetchError: '从服务器加载曲目失败。',
     syncComplete: '同步完成。',
     dismiss: '关闭',
+    colName: '名称',
+    colType: '类型',
+    colStatus: '状态',
+    onDevice: '设备管理器',
+    addSources: '添加…',
+    syncResult: '已传输 {{done}}，{{skipped}} 已是最新（共 {{total}}）',
+    deleteFromDevice: '标记为删除（{{count}}）',
+    confirmDelete: '从设备删除 {{count}} 个项目：{{names}}？',
+    deleteComplete: '已从设备删除 {{count}} 个项目。',
+    statusSynced: '已同步',
+    statusPending: '待处理',
+    statusDeletion: '删除中',
+    markForDeletion: '标记为删除',
+    removeSource: '移除',
+    undoDeletion: '撤销删除',
+    syncInBackground: '同步已在后台启动 — 您可以离开此页面。',
+    syncInProgress: '{{done}} / {{total}} 首曲目…',
+    syncSummary: '同步摘要',
+    calculating: '正在计算所需数据…',
+    filesToAdd: '要添加的文件：',
+    filesToDelete: '要删除的文件：',
+    netChange: '净变化：',
+    availableSpace: '可用磁盘空间：',
+    spaceWarning: '警告：目标设备的可用空间不足。',
+    proceed: '继续同步',
+    notEnoughSpace: '检测到物理磁盘空间不足！',
+    liveSearch: '实时',
+    randomAlbumsLabel: '随机专辑',
   },
 };

src/pages/PlaylistDetail.tsx

@@ -117,6 +117,10 @@ export default function PlaylistDetail() {
   const enablePlaylistCoverPhoto = useThemeStore(s => s.enablePlaylistCoverPhoto);
   const showBitrate = useThemeStore(s => s.showBitrate);
 
+  const enableCoverArtBackground = useThemeStore(s => s.enableCoverArtBackground);
+  const enablePlaylistCoverPhoto = useThemeStore(s => s.enablePlaylistCoverPhoto);
+  const showBitrate = useThemeStore(s => s.showBitrate);
+
   const [playlist, setPlaylist] = useState<SubsonicPlaylist | null>(null);
   const [songs, setSongs] = useState<SubsonicSong[]>([]);
   const [loading, setLoading] = useState(true);

src/pages/SearchResults.tsx

@@ -8,6 +8,7 @@ import ArtistRow from '../components/ArtistRow';
 import { useTranslation } from 'react-i18next';
 import { useDragDrop } from '../contexts/DragDropContext';
 import { useAuthStore } from '../store/authStore';
+import { useThemeStore } from '../store/themeStore';
 
 function formatDuration(s: number) {
   return `${Math.floor(s / 60)}:${(s % 60).toString().padStart(2, '0')}`;
@@ -23,6 +24,7 @@ export default function SearchResults() {
   const currentTrack = usePlayerStore(s => s.currentTrack);
   const psyDrag = useDragDrop();
   const musicLibraryFilterVersion = useAuthStore(s => s.musicLibraryFilterVersion);
+  const showBitrate = useThemeStore(s => s.showBitrate);
 
   useEffect(() => {
     if (!query.trim()) { setResults(null); return; }
@@ -116,7 +118,7 @@ export default function SearchResults() {
                     <div className="track-artist-cell"><span className="track-artist" title={song.artist}>{song.artist}</span></div>
                     <div className="track-artist-cell"><span className="track-artist" title={song.album}>{song.album}</span></div>
                     <span className="track-codec" style={{ alignSelf: 'center' }}>
-                      {[song.suffix?.toUpperCase(), song.bitRate ? `${song.bitRate} kbps` : ''].filter(Boolean).join(' · ')}
+                      {[song.suffix?.toUpperCase(), showBitrate && song.bitRate ? `${song.bitRate} kbps` : ''].filter(Boolean).join(' · ')}
                     </span>
                     <span className="track-duration" style={{ textAlign: 'right' }}>
                       {formatDuration(song.duration)}

src/pages/Settings.tsx

@@ -1612,6 +1612,47 @@ export default function Settings() {
             </div>
           </section>
 
+          <section className="settings-section">
+            <div className="settings-section-header">
+              <Palette size={18} />
+              <h2>{t('settings.visualOptionsTitle')}</h2>
+            </div>
+            <div className="settings-card">
+              <div className="settings-toggle-row">
+                <div>
+                  <div style={{ fontWeight: 500 }}>{t('settings.coverArtBackground')}</div>
+                  <div style={{ fontSize: 12, color: 'var(--text-muted)' }}>{t('settings.coverArtBackgroundSub')}</div>
+                </div>
+                <label className="toggle-switch">
+                  <input type="checkbox" checked={theme.enableCoverArtBackground} onChange={e => theme.setEnableCoverArtBackground(e.target.checked)} />
+                  <span className="toggle-track" />
+                </label>
+              </div>
+              <div className="settings-section-divider" />
+              <div className="settings-toggle-row">
+                <div>
+                  <div style={{ fontWeight: 500 }}>{t('settings.playlistCoverPhoto')}</div>
+                  <div style={{ fontSize: 12, color: 'var(--text-muted)' }}>{t('settings.playlistCoverPhotoSub')}</div>
+                </div>
+                <label className="toggle-switch">
+                  <input type="checkbox" checked={theme.enablePlaylistCoverPhoto} onChange={e => theme.setEnablePlaylistCoverPhoto(e.target.checked)} />
+                  <span className="toggle-track" />
+                </label>
+              </div>
+              <div className="settings-section-divider" />
+              <div className="settings-toggle-row">
+                <div>
+                  <div style={{ fontWeight: 500 }}>{t('settings.showBitrate')}</div>
+                  <div style={{ fontSize: 12, color: 'var(--text-muted)' }}>{t('settings.showBitrateSub')}</div>
+                </div>
+                <label className="toggle-switch">
+                  <input type="checkbox" checked={theme.showBitrate} onChange={e => theme.setShowBitrate(e.target.checked)} />
+                  <span className="toggle-track" />
+                </label>
+              </div>
+            </div>
+          </section>
+
           <section className="settings-section">
             <div className="settings-section-header">
               <ZoomIn size={18} />

src/store/deviceSyncJobStore.ts

@@ -0,0 +1,36 @@
+import { create } from 'zustand';
+
+export interface DeviceSyncJobState {
+  jobId: string | null;
+  total: number;
+  done: number;
+  skipped: number;
+  failed: number;
+  status: 'idle' | 'running' | 'done' | 'cancelled';
+
+  startSync: (jobId: string, total: number) => void;
+  updateProgress: (done: number, skipped: number, failed: number) => void;
+  complete: (done: number, skipped: number, failed: number) => void;
+  reset: () => void;
+}
+
+export const useDeviceSyncJobStore = create<DeviceSyncJobState>()((set) => ({
+  jobId: null,
+  total: 0,
+  done: 0,
+  skipped: 0,
+  failed: 0,
+  status: 'idle',
+
+  startSync: (jobId, total) =>
+    set({ jobId, total, done: 0, skipped: 0, failed: 0, status: 'running' }),
+
+  updateProgress: (done, skipped, failed) =>
+    set({ done, skipped, failed }),
+
+  complete: (done, skipped, failed) =>
+    set({ done, skipped, failed, status: 'done' }),
+
+  reset: () =>
+    set({ jobId: null, total: 0, done: 0, skipped: 0, failed: 0, status: 'idle' }),
+}));

src/store/deviceSyncStore.ts

@@ -7,21 +7,14 @@ export interface DeviceSyncSource {
   name: string;
 }
 
-export interface DeviceSyncJob {
-  id: string;
-  total: number;
-  done: number;
-  skipped: number;
-  failed: number;
-  status: 'running' | 'done' | 'cancelled';
-}
-
 interface DeviceSyncState {
   targetDir: string | null;
   filenameTemplate: string;
   sources: DeviceSyncSource[];        // persistent device content list
-  checkedIds: string[];               // currently checked for deletion (not persisted)
+  checkedIds: string[];               // currently checked for bulk actions (not persisted)
-  activeJob: DeviceSyncJob | null;
+  pendingDeletion: string[];          // source IDs marked for deletion (not persisted)
+  deviceFilePaths: string[];          // actual file paths found on the device (not persisted)
+  scanning: boolean;                   // true while scanning the device
 
   setTargetDir: (dir: string | null) => void;
   setFilenameTemplate: (t: string) => void;
@@ -30,8 +23,12 @@ interface DeviceSyncState {
   clearSources: () => void;
   toggleChecked: (id: string) => void;
   setCheckedIds: (ids: string[]) => void;
-  setActiveJob: (job: DeviceSyncJob | null) => void;
+  markForDeletion: (ids: string[]) => void;
-  updateJob: (update: Partial<DeviceSyncJob>) => void;
+  unmarkDeletion: (id: string) => void;
+  clearPendingDeletion: () => void;
+  removeSources: (ids: string[]) => void;
+  setDeviceFilePaths: (paths: string[]) => void;
+  setScanning: (v: boolean) => void;
 }
 
 export const useDeviceSyncStore = create<DeviceSyncState>()(
@@ -41,7 +38,9 @@ export const useDeviceSyncStore = create<DeviceSyncState>()(
       filenameTemplate: '{artist}/{album}/{track_number} - {title}',
       sources: [],
       checkedIds: [],
-      activeJob: null,
+      pendingDeletion: [],
+      deviceFilePaths: [],
+      scanning: false,
 
       setTargetDir: (dir) => set({ targetDir: dir }),
       setFilenameTemplate: (t) => set({ filenameTemplate: t }),
@@ -57,9 +56,10 @@ export const useDeviceSyncStore = create<DeviceSyncState>()(
         set((s) => ({
           sources: s.sources.filter((x) => x.id !== id),
           checkedIds: s.checkedIds.filter((x) => x !== id),
+          pendingDeletion: s.pendingDeletion.filter((x) => x !== id),
         })),
 
-      clearSources: () => set({ sources: [], checkedIds: [] }),
+      clearSources: () => set({ sources: [], checkedIds: [], pendingDeletion: [] }),
 
       toggleChecked: (id) =>
         set((s) => ({
@@ -70,12 +70,28 @@ export const useDeviceSyncStore = create<DeviceSyncState>()(
 
       setCheckedIds: (ids) => set({ checkedIds: ids }),
 
-      setActiveJob: (job) => set({ activeJob: job }),
+      markForDeletion: (ids) =>
-
-      updateJob: (update) =>
         set((s) => ({
-          activeJob: s.activeJob ? { ...s.activeJob, ...update } : null,
+          pendingDeletion: [...new Set([...s.pendingDeletion, ...ids])],
+          checkedIds: s.checkedIds.filter((x) => !ids.includes(x)),
         })),
+
+      unmarkDeletion: (id) =>
+        set((s) => ({
+          pendingDeletion: s.pendingDeletion.filter((x) => x !== id),
+        })),
+
+      clearPendingDeletion: () => set({ pendingDeletion: [] }),
+
+      removeSources: (ids) =>
+        set((s) => ({
+          sources: s.sources.filter((x) => !ids.includes(x.id)),
+          checkedIds: s.checkedIds.filter((x) => !ids.includes(x)),
+          pendingDeletion: s.pendingDeletion.filter((x) => !ids.includes(x)),
+        })),
+
+      setDeviceFilePaths: (paths) => set({ deviceFilePaths: paths }),
+      setScanning: (v) => set({ scanning: v }),
     }),
     {
       name: 'psysonic_device_sync',

src/store/themeStore.ts

@@ -57,7 +57,7 @@ export const useThemeStore = create<ThemeState>()(
       setEnableCoverArtBackground: (v) => set({ enableCoverArtBackground: v }),
       enablePlaylistCoverPhoto: true,
       setEnablePlaylistCoverPhoto: (v) => set({ enablePlaylistCoverPhoto: v }),
-      showBitrate: false,
+      showBitrate: true,
       setShowBitrate: (v) => set({ showBitrate: v }),
     }),
     {

src/styles/components.css

@@ -7573,24 +7573,51 @@ html.no-compositing .fs-seekbar-played {
 
 .device-sync-header {
   display: flex;
-  align-items: center;
+  flex-direction: column;
-  gap: 10px;
+  gap: 16px;
-  margin-bottom: 10px;
+  margin-bottom: 20px;
-  color: var(--text-primary);
   flex-shrink: 0;
 }
 
-.device-sync-header h1 {
+.device-sync-header-title {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  color: var(--text-primary);
+}
+
+.device-sync-header-title h1 {
   font-size: 1.3rem;
   font-weight: 600;
   margin: 0;
-  flex: 1;
 }
 
-.device-sync-header-config {
+/* ── Config Row (Template + Drive Layout) ── */
+
+.device-sync-config-row {
   display: flex;
-  align-items: center;
+  flex-wrap: wrap;
-  gap: 8px;
+  justify-content: space-between;
+  align-items: flex-start;
+  gap: 30px;
+  min-height: 0;
+  width: 100%;
+}
+
+.device-sync-template-section {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  flex: 1;
+  max-width: 600px;
+}
+
+.device-sync-target-section {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  align-items: flex-end; /* Flush right alignment */
+  flex: 1; /* allow block expansion */
 }
 
 .device-sync-folder-path {
@@ -7606,28 +7633,104 @@ html.no-compositing .fs-seekbar-played {
   border-radius: var(--radius-sm);
 }
 
-/* ── Template row ── */
+/* ── Drive layout ── */
 
-.device-sync-template-row {
+.device-sync-drive-layout {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-end;
+  gap: 4px;
+}
+
+.device-sync-drive-controls {
   display: flex;
   align-items: center;
-  gap: 10px;
+  gap: 8px;
-  margin-bottom: 14px;
+}
+
+.device-sync-drive-meta {
+  font-size: 0.75rem;
+  color: var(--text-muted);
+  text-align: right;
+  padding-right: 2px;
+}
+
+.device-sync-drive-icon {
+  color: var(--accent);
   flex-shrink: 0;
 }
 
+.device-sync-drive-select {
+  min-width: 200px;
+  max-width: 320px;
+  font-size: 0.95rem;
+  height: 40px;
+  padding: 0 10px;
+  line-height: normal;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  text-align: left;
+  cursor: pointer;
+}
+
+.device-sync-drive-controls .btn-ghost {
+  height: 40px;
+  width: 40px;
+  padding: 0 !important;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+}
+
+.device-sync-no-drives {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 0.78rem;
+  color: var(--warning, #f59e0b);
+  padding: 5px 10px;
+  background: color-mix(in srgb, var(--warning, #f59e0b) 10%, transparent);
+  border-radius: var(--radius-sm);
+}
+
 .device-sync-label-inline {
   font-size: 0.8rem;
   font-weight: 500;
   color: var(--text-secondary);
   white-space: nowrap;
-  flex-shrink: 0;
+}
+
+.device-sync-template-input-wrap {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  position: relative;
 }
 
 .device-sync-template-input {
-  flex: 1;
+  width: 100%;
   font-family: monospace;
-  font-size: 0.82rem;
+  font-size: 0.95rem;
+  height: 40px;
+  padding: 0 10px;
+  line-height: normal;
+}
+
+.device-sync-template-preview {
+  font-size: 0.72rem;
+  color: var(--text-muted);
+  font-family: monospace;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  padding-left: 2px;
+  opacity: 0.75;
+  position: absolute;
+  top: 100%;
+  left: 0;
+  margin-top: 4px;
 }
 
 /* ── Main area (device panel + browser) ── */
@@ -7746,7 +7849,19 @@ html.no-compositing .fs-seekbar-played {
 }
 
 .device-sync-device-row:last-child { border-bottom: none; }
-.device-sync-device-row:hover { background: var(--bg-hover); }
+.device-sync-source-row:hover {
+  background: var(--bg-hover);
+}
+
+.device-sync-source-row.deletion, .device-sync-row.deletion {
+  text-decoration: line-through;
+  opacity: 0.5;
+}
+
+.device-sync-row-name {
+  flex: 1;
+}
+
 .device-sync-device-row.checked { background: var(--accent-dim); }
 
 .device-sync-source-type {
@@ -7759,41 +7874,184 @@ html.no-compositing .fs-seekbar-played {
   flex-shrink: 0;
 }
 
-/* ── Progress ── */
+/* ── Status summary badges ── */
 
-.device-sync-progress {
+.device-sync-status-summary {
   display: flex;
-  flex-direction: column;
+  align-items: center;
   gap: 8px;
-  padding: 10px 14px;
+  height: 52px;
-  border-top: 1px solid var(--border);
+  padding: 0 14px;
+  border-bottom: 1px solid var(--border);
   flex-shrink: 0;
 }
 
-.device-sync-progress-bar-wrap {
+.device-sync-badge {
-  height: 4px;
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  padding: 3px 8px;
+  border-radius: 12px;
+  font-size: 0.7rem;
+  font-weight: 600;
+  letter-spacing: 0.02em;
+}
+
+.device-sync-badge.synced {
+  background: color-mix(in srgb, var(--success, #4ade80) 15%, transparent);
+  color: var(--success, #4ade80);
+}
+
+.device-sync-badge.pending {
+  background: color-mix(in srgb, var(--warning, #f59e0b) 15%, transparent);
+  color: var(--warning, #f59e0b);
+}
+
+.device-sync-badge.deletion {
+  background: color-mix(in srgb, var(--danger, #f38ba8) 15%, transparent);
+  color: var(--danger, #f38ba8);
+}
+
+/* ── Status column ── */
+
+.device-sync-list-col-status {
+  width: 50px;
+  font-size: 0.75rem;
+  font-weight: 600;
+  color: var(--text-secondary);
+  text-transform: uppercase;
+  letter-spacing: 0.04em;
+  flex-shrink: 0;
+  text-align: center;
+}
+
+.device-sync-list-col-actions {
+  width: 32px;
+  flex-shrink: 0;
+}
+
+/* ── Status icons per row ── */
+
+.device-sync-status-icon {
+  width: 50px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+}
+
+.device-sync-status-icon.synced { color: var(--success, #4ade80); }
+.device-sync-status-icon.pending { color: var(--warning, #f59e0b); }
+.device-sync-status-icon.deletion { color: var(--danger, #f38ba8); }
+
+/* ── Per-row action buttons ── */
+
+.device-sync-row-actions {
+  width: 32px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+}
+
+.device-sync-action-btn {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 24px;
+  height: 24px;
+  border: none;
+  background: transparent;
+  border-radius: var(--radius-sm);
+  cursor: pointer;
+  transition: background 0.15s, color 0.15s, transform 0.1s;
+  opacity: 0;
+}
+
+.device-sync-device-row:hover .device-sync-action-btn {
+  opacity: 1;
+}
+
+.device-sync-action-btn.danger {
+  color: var(--danger, #f38ba8);
+}
+.device-sync-action-btn.danger:hover {
+  background: color-mix(in srgb, var(--danger, #f38ba8) 15%, transparent);
+  transform: scale(1.1);
+}
+
+.device-sync-action-btn.muted {
+  color: var(--text-muted);
+}
+.device-sync-action-btn.muted:hover {
+  background: var(--bg-hover);
+  color: var(--text-primary);
+  transform: scale(1.1);
+}
+
+.device-sync-action-btn.undo {
+  color: var(--accent);
+  opacity: 1;
+}
+.device-sync-action-btn.undo:hover {
+  background: color-mix(in srgb, var(--accent) 15%, transparent);
+  transform: scale(1.1);
+}
+
+/* ── Row status variants ── */
+
+.device-sync-device-row.synced {}
+.device-sync-device-row.pending {}
+.device-sync-device-row.deletion {
+  opacity: 0.55;
+}
+.device-sync-device-row.deletion .device-sync-row-name {
+  text-decoration: line-through;
+  text-decoration-color: var(--danger, #f38ba8);
+}
+
+/* ── Background sync progress (non-blocking) ── */
+
+.device-sync-bg-progress {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  padding: 10px 14px;
+  border-top: 1px solid var(--border);
+  flex-shrink: 0;
+  background: color-mix(in srgb, var(--accent) 4%, transparent);
+}
+
+.device-sync-bg-progress.done {
+  flex-direction: row;
+  align-items: center;
+  justify-content: space-between;
+  background: color-mix(in srgb, var(--success, #4ade80) 4%, transparent);
+}
+
+.device-sync-bg-progress-bar-wrap {
+  height: 3px;
   background: var(--bg-input);
   border-radius: 2px;
   overflow: hidden;
 }
 
-.device-sync-progress-bar {
+.device-sync-bg-progress-bar {
   height: 100%;
   background: var(--accent);
   border-radius: 2px;
   transition: width 0.3s ease;
 }
 
-.device-sync-progress-stats {
+.device-sync-bg-progress-text {
   display: flex;
   align-items: center;
-  gap: 10px;
+  gap: 6px;
-  font-size: 0.82rem;
+  font-size: 0.78rem;
   color: var(--text-secondary);
 }
 
-.device-sync-stat-muted { color: var(--text-secondary); display: flex; align-items: center; gap: 3px; }
+.device-sync-stat-error { color: var(--danger); display: flex; align-items: center; gap: 3px; }
-.device-sync-stat-error  { color: var(--danger); display: flex; align-items: center; gap: 3px; }
 .color-success { color: var(--success, #4ade80); }
 
 /* ── Browser panel ── */
@@ -7842,7 +8100,35 @@ html.no-compositing .fs-seekbar-played {
 }
 
 .device-sync-search-wrap .input {
-  width: 100%;
+  flex: 1;
+}
+
+.device-sync-live-badge {
+  display: flex;
+  align-items: center;
+  gap: 3px;
+  flex-shrink: 0;
+  margin-left: 8px;
+  padding: 2px 7px;
+  border-radius: 999px;
+  font-size: 0.68rem;
+  font-weight: 600;
+  letter-spacing: 0.03em;
+  color: var(--accent);
+  background: var(--accent-dim);
+  white-space: nowrap;
+}
+
+.device-sync-section-label {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  padding: 6px 10px 4px;
+  font-size: 0.7rem;
+  font-weight: 600;
+  letter-spacing: 0.05em;
+  text-transform: uppercase;
+  color: var(--text-muted);
 }
 
 .device-sync-list {

src/styles/layout.css

@@ -912,6 +912,13 @@
   background: color-mix(in srgb, var(--accent) 20%, transparent);
 }
 
+/* ─── Sidebar device-sync queue ─── */
+.sidebar-sync-queue {
+  background: color-mix(in srgb, var(--success, #4ade80) 10%, var(--bg-sidebar));
+  border-color: color-mix(in srgb, var(--success, #4ade80) 25%, transparent);
+  color: var(--success, #4ade80);
+}
+
 @keyframes spin-slow {
   to { transform: rotate(360deg); }
 }

src/styles/theme.css

@@ -14447,3 +14447,541 @@ input[type="range"]:hover::-webkit-slider-thumb {
   --danger:         #d55e00;
   --volume-accent:  #ffd700;
 }
+
+/* ─── COMMUNITY THEMES ─── */
+
+/* ─── AMOLED Black Pure ─── */
+[data-theme='amoled-black-pure'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds — absolute black everywhere */
+  --ctp-crust:    #000000;
+  --ctp-mantle:   #000000;
+  --ctp-base:     #000000;
+  --ctp-surface0: #000000;
+  --ctp-surface1: #050505;
+  --ctp-surface2: #0a0a0a;
+
+  /* Overlays / muted text — raised for contrast */
+  --ctp-overlay0: #555555;
+  --ctp-overlay1: #707070;
+  --ctp-overlay2: #8a8a8a;
+
+  /* Text */
+  --ctp-text:     #ffffff;
+  --ctp-subtext1: #e0e0e0;
+  --ctp-subtext0: #bbbbbb;
+
+  /* Accent — pure white */
+  --ctp-teal:      #ffffff;
+  --ctp-sky:       #ffffff;
+  --ctp-sapphire:  #e0e0e0;
+  --ctp-blue:      #cccccc;
+  --ctp-lavender:  #ffffff;
+  --ctp-mauve:     #e0e0e0;
+  --ctp-pink:      #cccccc;
+  --ctp-flamingo:  #ffffff;
+  --ctp-rosewater: #e0e0e0;
+
+  /* Semantic */
+  --ctp-red:     #f87171;
+  --ctp-maroon:  #fb923c;
+  --ctp-peach:   #fb923c;
+  --ctp-yellow:  #fbbf24;
+  --ctp-green:   #4ade80;
+
+  /* UI tokens — all black */
+  --bg-app:      #000000;
+  --bg-sidebar:  #000000;
+  --bg-card:     #000000;
+  --bg-hover:    #0a0a0a;
+  --bg-player:   #000000;
+  --bg-glass:    rgba(0, 0, 0, 0.95);
+
+  --accent:      #ffffff;
+  --accent-dim:  rgba(255, 255, 255, 0.07);
+  --accent-glow: rgba(255, 255, 255, 0.15);
+
+  --text-primary:   #ffffff;
+  --text-secondary: #b0b0b0;
+  --text-muted:     #777777;
+
+  --border:          #141414;
+  --border-subtle:   #0a0a0a;
+  --border-dropdown: #1f1f1f;
+  --shadow-dropdown: rgba(0, 0, 0, 0.98);
+
+  --positive: #4ade80;
+  --warning:  #fbbf24;
+  --danger:   #f87171;
+}
+
+/* ─── Monochrome Dark ─── */
+[data-theme='monochrome'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23c0c0c0%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds — deep grayscale */
+  --ctp-crust:    #0d0d0d;
+  --ctp-mantle:   #111111;
+  --ctp-base:     #161616;
+  --ctp-surface0: #1c1c1c;
+  --ctp-surface1: #232323;
+  --ctp-surface2: #2a2a2a;
+
+  /* Overlays — medium grays with good contrast */
+  --ctp-overlay0: #555555;
+  --ctp-overlay1: #6e6e6e;
+  --ctp-overlay2: #888888;
+
+  /* Text */
+  --ctp-text:     #e8e8e8;
+  --ctp-subtext1: #c0c0c0;
+  --ctp-subtext0: #999999;
+
+  /* Accent — silver / light gray */
+  --ctp-teal:      #c0c0c0;
+  --ctp-sky:       #c0c0c0;
+  --ctp-sapphire:  #aaaaaa;
+  --ctp-blue:      #999999;
+  --ctp-lavender:  #c0c0c0;
+  --ctp-mauve:     #aaaaaa;
+  --ctp-pink:      #999999;
+  --ctp-flamingo:  #c0c0c0;
+  --ctp-rosewater: #aaaaaa;
+
+  /* Semantic — desaturated for monochrome */
+  --ctp-red:     #cc6666;
+  --ctp-maroon:  #bb7744;
+  --ctp-peach:   #bb7744;
+  --ctp-yellow:  #bbaa55;
+  --ctp-green:   #77aa77;
+
+  /* UI tokens */
+  --bg-app:      #161616;
+  --bg-sidebar:  #111111;
+  --bg-card:     #1c1c1c;
+  --bg-hover:    #232323;
+  --bg-player:   #111111;
+  --bg-glass:    rgba(22, 22, 22, 0.95);
+
+  --accent:      #c0c0c0;
+  --accent-dim:  rgba(192, 192, 192, 0.07);
+  --accent-glow: rgba(192, 192, 192, 0.12);
+
+  --text-primary:   #e8e8e8;
+  --text-secondary: #b0b0b0;
+  --text-muted:     #777777;
+
+  --border:          #282828;
+  --border-subtle:   #1f1f1f;
+  --border-dropdown: #303030;
+  --shadow-dropdown: rgba(0, 0, 0, 0.85);
+
+  --positive: #77aa77;
+  --warning:  #bbaa55;
+  --danger:   #cc6666;
+}
+
+/* ─── Amber Night ─── */
+[data-theme='amber-night'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23d4a96a%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds */
+  --ctp-crust:    #0a0804;
+  --ctp-mantle:   #0f0c07;
+  --ctp-base:     #1a1410;
+  --ctp-surface0: #201a12;
+  --ctp-surface1: #2a2318;
+  --ctp-surface2: #332b1e;
+
+  /* Overlays */
+  --ctp-overlay0: #5a4a30;
+  --ctp-overlay1: #7a6540;
+  --ctp-overlay2: #9a8055;
+
+  /* Text */
+  --ctp-text:     #f0e0c8;
+  --ctp-subtext1: #d4b88a;
+  --ctp-subtext0: #b09060;
+
+  /* Golden amber accent */
+  --ctp-teal:      #d4a96a;
+  --ctp-sky:       #d4a96a;
+  --ctp-sapphire:  #c49055;
+  --ctp-blue:      #b07840;
+  --ctp-lavender:  #d4a96a;
+  --ctp-mauve:     #c49055;
+  --ctp-pink:      #b07840;
+  --ctp-flamingo:  #d4a96a;
+  --ctp-rosewater: #c49055;
+
+  /* Semantic */
+  --ctp-red:     #e07060;
+  --ctp-maroon:  #d08050;
+  --ctp-peach:   #d08050;
+  --ctp-yellow:  #d4a96a;
+  --ctp-green:   #80b870;
+
+  /* UI tokens */
+  --bg-app:      #1a1410;
+  --bg-sidebar:  #0f0c07;
+  --bg-card:     #201a12;
+  --bg-hover:    #2a2318;
+  --bg-player:   #0f0c07;
+  --bg-glass:    rgba(26, 20, 16, 0.95);
+
+  --accent:      #d4a96a;
+  --accent-dim:  rgba(212, 169, 106, 0.08);
+  --accent-glow: rgba(212, 169, 106, 0.15);
+
+  --text-primary:   #f0e0c8;
+  --text-secondary: #b09060;
+  --text-muted:     #7a6040;
+
+  --border:          #2a2318;
+  --border-subtle:   #201a12;
+  --border-dropdown: #332b1e;
+  --shadow-dropdown: rgba(0, 0, 0, 0.90);
+
+  --positive: #80b870;
+  --warning:  #d4a96a;
+  --danger:   #e07060;
+}
+
+/* ─── Phosphor Green ─── */
+[data-theme='phosphor-green'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%234ade80%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds */
+  --ctp-crust:    #050e05;
+  --ctp-mantle:   #070f07;
+  --ctp-base:     #0d1a0d;
+  --ctp-surface0: #111f11;
+  --ctp-surface1: #162616;
+  --ctp-surface2: #1c2e1c;
+
+  /* Overlays */
+  --ctp-overlay0: #2d5a2d;
+  --ctp-overlay1: #3d7a3d;
+  --ctp-overlay2: #4d9a4d;
+
+  /* Text */
+  --ctp-text:     #d0f0d0;
+  --ctp-subtext1: #a0d0a0;
+  --ctp-subtext0: #70aa70;
+
+  /* Phosphor green accent */
+  --ctp-teal:      #4ade80;
+  --ctp-sky:       #4ade80;
+  --ctp-sapphire:  #38c070;
+  --ctp-blue:      #2aa060;
+  --ctp-lavender:  #4ade80;
+  --ctp-mauve:     #38c070;
+  --ctp-pink:      #2aa060;
+  --ctp-flamingo:  #4ade80;
+  --ctp-rosewater: #38c070;
+
+  /* Semantic */
+  --ctp-red:     #e06060;
+  --ctp-maroon:  #c07840;
+  --ctp-peach:   #c07840;
+  --ctp-yellow:  #b0b050;
+  --ctp-green:   #4ade80;
+
+  /* UI tokens */
+  --bg-app:      #0d1a0d;
+  --bg-sidebar:  #070f07;
+  --bg-card:     #111f11;
+  --bg-hover:    #162616;
+  --bg-player:   #070f07;
+  --bg-glass:    rgba(13, 26, 13, 0.95);
+
+  --accent:      #4ade80;
+  --accent-dim:  rgba(74, 222, 128, 0.07);
+  --accent-glow: rgba(74, 222, 128, 0.14);
+
+  --text-primary:   #d0f0d0;
+  --text-secondary: #70aa70;
+  --text-muted:     #3d6a3d;
+
+  --border:          #1c2e1c;
+  --border-subtle:   #111f11;
+  --border-dropdown: #223022;
+  --shadow-dropdown: rgba(0, 0, 0, 0.88);
+
+  --positive: #4ade80;
+  --warning:  #b0b050;
+  --danger:   #e06060;
+}
+
+/* ─── Midnight Blue ─── */
+[data-theme='midnight-blue'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%2360a5fa%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds */
+  --ctp-crust:    #07090f;
+  --ctp-mantle:   #090c14;
+  --ctp-base:     #0d1420;
+  --ctp-surface0: #111a28;
+  --ctp-surface1: #162030;
+  --ctp-surface2: #1c2838;
+
+  /* Overlays */
+  --ctp-overlay0: #2a3d5a;
+  --ctp-overlay1: #3a507a;
+  --ctp-overlay2: #4a659a;
+
+  /* Text */
+  --ctp-text:     #ccd8f0;
+  --ctp-subtext1: #9ab0d8;
+  --ctp-subtext0: #6888b0;
+
+  /* Light blue accent */
+  --ctp-teal:      #60a5fa;
+  --ctp-sky:       #60a5fa;
+  --ctp-sapphire:  #4a90e8;
+  --ctp-blue:      #3878d0;
+  --ctp-lavender:  #60a5fa;
+  --ctp-mauve:     #4a90e8;
+  --ctp-pink:      #3878d0;
+  --ctp-flamingo:  #60a5fa;
+  --ctp-rosewater: #4a90e8;
+
+  /* Semantic */
+  --ctp-red:     #e07070;
+  --ctp-maroon:  #d09050;
+  --ctp-peach:   #d09050;
+  --ctp-yellow:  #c8b850;
+  --ctp-green:   #60c880;
+
+  /* UI tokens */
+  --bg-app:      #0d1420;
+  --bg-sidebar:  #090c14;
+  --bg-card:     #111a28;
+  --bg-hover:    #162030;
+  --bg-player:   #090c14;
+  --bg-glass:    rgba(13, 20, 32, 0.95);
+
+  --accent:      #60a5fa;
+  --accent-dim:  rgba(96, 165, 250, 0.07);
+  --accent-glow: rgba(96, 165, 250, 0.14);
+
+  --text-primary:   #ccd8f0;
+  --text-secondary: #6888b0;
+  --text-muted:     #3a5070;
+
+  --border:          #1c2838;
+  --border-subtle:   #111a28;
+  --border-dropdown: #223040;
+  --shadow-dropdown: rgba(0, 0, 0, 0.90);
+
+  --positive: #60c880;
+  --warning:  #c8b850;
+  --danger:   #e07070;
+}
+
+/* ─── Rose Dark ─── */
+[data-theme='rose-dark'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23f472b6%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds */
+  --ctp-crust:    #0e080b;
+  --ctp-mantle:   #120a0e;
+  --ctp-base:     #1a0d14;
+  --ctp-surface0: #20111a;
+  --ctp-surface1: #281520;
+  --ctp-surface2: #301a27;
+
+  /* Overlays */
+  --ctp-overlay0: #5a2a40;
+  --ctp-overlay1: #7a3a58;
+  --ctp-overlay2: #9a5070;
+
+  /* Text */
+  --ctp-text:     #f0d0e0;
+  --ctp-subtext1: #d8a0c0;
+  --ctp-subtext0: #b07090;
+
+  /* Pink accent */
+  --ctp-teal:      #f472b6;
+  --ctp-sky:       #f472b6;
+  --ctp-sapphire:  #e055a0;
+  --ctp-blue:      #c8408a;
+  --ctp-lavender:  #f472b6;
+  --ctp-mauve:     #e055a0;
+  --ctp-pink:      #c8408a;
+  --ctp-flamingo:  #f472b6;
+  --ctp-rosewater: #e055a0;
+
+  /* Semantic */
+  --ctp-red:     #e06070;
+  --ctp-maroon:  #d07850;
+  --ctp-peach:   #d07850;
+  --ctp-yellow:  #c8a850;
+  --ctp-green:   #70b880;
+
+  /* UI tokens */
+  --bg-app:      #1a0d14;
+  --bg-sidebar:  #120a0e;
+  --bg-card:     #20111a;
+  --bg-hover:    #281520;
+  --bg-player:   #120a0e;
+  --bg-glass:    rgba(26, 13, 20, 0.95);
+
+  --accent:      #f472b6;
+  --accent-dim:  rgba(244, 114, 182, 0.07);
+  --accent-glow: rgba(244, 114, 182, 0.14);
+
+  --text-primary:   #f0d0e0;
+  --text-secondary: #b07090;
+  --text-muted:     #704858;
+
+  --border:          #281520;
+  --border-subtle:   #20111a;
+  --border-dropdown: #341a28;
+  --shadow-dropdown: rgba(0, 0, 0, 0.90);
+
+  --positive: #70b880;
+  --warning:  #c8a850;
+  --danger:   #e06070;
+}
+
+/* ─── Sepia Dark ─── */
+[data-theme='sepia-dark'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23c8b89a%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds */
+  --ctp-crust:    #0e0c09;
+  --ctp-mantle:   #13100c;
+  --ctp-base:     #1e1a14;
+  --ctp-surface0: #252018;
+  --ctp-surface1: #2e281e;
+  --ctp-surface2: #373025;
+
+  /* Overlays */
+  --ctp-overlay0: #605545;
+  --ctp-overlay1: #806e5a;
+  --ctp-overlay2: #9a8870;
+
+  /* Text */
+  --ctp-text:     #ede0cc;
+  --ctp-subtext1: #d0c0a8;
+  --ctp-subtext0: #b0a080;
+
+  /* Cream accent */
+  --ctp-teal:      #c8b89a;
+  --ctp-sky:       #c8b89a;
+  --ctp-sapphire:  #b8a080;
+  --ctp-blue:      #a08868;
+  --ctp-lavender:  #c8b89a;
+  --ctp-mauve:     #b8a080;
+  --ctp-pink:      #a08868;
+  --ctp-flamingo:  #c8b89a;
+  --ctp-rosewater: #b8a080;
+
+  /* Semantic */
+  --ctp-red:     #c87060;
+  --ctp-maroon:  #c08050;
+  --ctp-peach:   #c08050;
+  --ctp-yellow:  #b8a050;
+  --ctp-green:   #80a870;
+
+  /* UI tokens */
+  --bg-app:      #1e1a14;
+  --bg-sidebar:  #13100c;
+  --bg-card:     #252018;
+  --bg-hover:    #2e281e;
+  --bg-player:   #13100c;
+  --bg-glass:    rgba(30, 26, 20, 0.95);
+
+  --accent:      #c8b89a;
+  --accent-dim:  rgba(200, 184, 154, 0.07);
+  --accent-glow: rgba(200, 184, 154, 0.13);
+
+  --text-primary:   #ede0cc;
+  --text-secondary: #b0a080;
+  --text-muted:     #706050;
+
+  --border:          #2e281e;
+  --border-subtle:   #252018;
+  --border-dropdown: #3a3025;
+  --shadow-dropdown: rgba(0, 0, 0, 0.88);
+
+  --positive: #80a870;
+  --warning:  #b8a050;
+  --danger:   #c87060;
+}
+
+/* ─── Ice Blue ─── */
+[data-theme='ice-blue'] {
+  color-scheme: dark;
+  --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%237dd3e8%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
+
+  /* Backgrounds */
+  --ctp-crust:    #07101a;
+  --ctp-mantle:   #09141e;
+  --ctp-base:     #0e1d28;
+  --ctp-surface0: #132430;
+  --ctp-surface1: #192c3a;
+  --ctp-surface2: #203444;
+
+  /* Overlays */
+  --ctp-overlay0: #2a4a5a;
+  --ctp-overlay1: #3a6070;
+  --ctp-overlay2: #4a788a;
+
+  /* Text */
+  --ctp-text:     #cce8f0;
+  --ctp-subtext1: #9accd8;
+  --ctp-subtext0: #68a8b8;
+
+  /* Icy cyan accent */
+  --ctp-teal:      #7dd3e8;
+  --ctp-sky:       #7dd3e8;
+  --ctp-sapphire:  #60bcd5;
+  --ctp-blue:      #48a8c0;
+  --ctp-lavender:  #7dd3e8;
+  --ctp-mauve:     #60bcd5;
+  --ctp-pink:      #48a8c0;
+  --ctp-flamingo:  #7dd3e8;
+  --ctp-rosewater: #60bcd5;
+
+  /* Semantic */
+  --ctp-red:     #e07878;
+  --ctp-maroon:  #d09858;
+  --ctp-peach:   #d09858;
+  --ctp-yellow:  #c8c060;
+  --ctp-green:   #60c898;
+
+  /* UI tokens */
+  --bg-app:      #0e1d28;
+  --bg-sidebar:  #09141e;
+  --bg-card:     #132430;
+  --bg-hover:    #192c3a;
+  --bg-player:   #09141e;
+  --bg-glass:    rgba(14, 29, 40, 0.95);
+
+  --accent:      #7dd3e8;
+  --accent-dim:  rgba(125, 211, 232, 0.07);
+  --accent-glow: rgba(125, 211, 232, 0.14);
+
+  --text-primary:   #cce8f0;
+  --text-secondary: #68a8b8;
+  --text-muted:     #3a6878;
+
+  --border:          #192c3a;
+  --border-subtle:   #132430;
+  --border-dropdown: #223844;
+  --shadow-dropdown: rgba(0, 0, 0, 0.90);
+
+  --positive: #60c898;
+  --warning:  #c8c060;
+  --danger:   #e07878;
+}