Fix player layout and refresh playback

android/MusicRoom

@@ -1 +0,0 @@
-Subproject commit fd6fc4d757b2f8ad4ff5e6715d6a4a9a560a35a3

config.ts

@@ -18,6 +18,8 @@ export interface ReplayGainConfig {
   command: string;
   truePeak: boolean;
   timeoutMs: number;
+  maxConcurrent?: number;
+  maxOutputBytes?: number;
 }
 
 export interface Config {
@@ -51,7 +53,9 @@ export const DEFAULT_CONFIG: Config = {
     enabled: true,
     command: "rsgain",
     truePeak: false,
-    timeoutMs: 120000
+    timeoutMs: 120000,
+    maxConcurrent: 1,
+    maxOutputBytes: 262144
   }
 };
 

init.ts

@@ -85,6 +85,21 @@ export function getAllLibraryTracks(lib: Library): Track[] {
     }));
 }
 
+function serializeLibraryTrack(track: ReturnType<Library["getAllTracks"]>[number]) {
+  return {
+    id: track.id,
+    filename: track.filename,
+    title: track.title,
+    artist: track.artist,
+    album: track.album,
+    duration: track.duration,
+    replayGainDb: track.replayGainDb,
+    replayPeak: track.replayPeak,
+    createdAt: track.created_at,
+    available: track.available,
+  };
+}
+
 export async function init(): Promise<void> {
   // Initialize yt-dlp if configured
   const ytdlpConfig = config.ytdlp || DEFAULT_CONFIG.ytdlp!;
@@ -215,7 +230,7 @@ export async function init(): Promise<void> {
     setTimeout(() => checkPendingPlaylistAddition(track), 100);
   });
   library.on("changed", (track) => {
-    broadcastToAll({ type: "toast", message: `Updated: ${track.title || track.filename}`, toastType: "info" });
+    console.log(`Track metadata updated: ${track.title || track.filename}`);
     library.logActivity("scan_updated", { id: track.id, filename: track.filename, title: track.title });
   });
 
@@ -352,22 +367,10 @@ export async function init(): Promise<void> {
   // Listen for library changes and notify clients
   library.on("added", (track) => {
     console.log(`New track detected: ${track.title}`);
-    const allTracks = library.getAllTracks().map(t => ({
+    const allTracks = library.getAllTracks().map(serializeLibraryTrack);
-      id: t.id,
-      title: t.title,
-      duration: t.duration,
-      replayGainDb: t.replayGainDb,
-      replayPeak: t.replayPeak,
-    }));
     broadcastToAll({
       type: "track_added",
-      track: {
+      track: serializeLibraryTrack(track),
-        id: track.id,
-        title: track.title,
-        duration: track.duration,
-        replayGainDb: track.replayGainDb,
-        replayPeak: track.replayPeak,
-      },
       library: allTracks
     });
   });
@@ -375,16 +378,10 @@ export async function init(): Promise<void> {
   library.on("removed", (track) => {
     console.log(`Track removed: ${track.title}`);
     removeTrackFromQueues(track.id);
-    const allTracks = library.getAllTracks().map(t => ({
+    const allTracks = library.getAllTracks().map(serializeLibraryTrack);
-      id: t.id,
-      title: t.title,
-      duration: t.duration,
-      replayGainDb: t.replayGainDb,
-      replayPeak: t.replayPeak,
-    }));
     broadcastToAll({
       type: "track_removed",
-      track: { id: track.id, title: track.title },
+      track: serializeLibraryTrack(track),
       library: allTracks
     });
   });

library.ts

@@ -1,5 +1,5 @@
 import { Database } from "bun:sqlite";
-import { spawn } from "child_process";
+import { spawn, type ChildProcess } from "child_process";
 import { createHash } from "crypto";
 import { watch, type FSWatcher } from "fs";
 import { readdir, stat } from "fs/promises";
@@ -9,11 +9,13 @@ import { type Track } from "./db";
 
 const HASH_CHUNK_SIZE = 64 * 1024; // 64KB
 const AUDIO_EXTENSIONS = new Set([".mp3", ".ogg", ".flac", ".wav", ".m4a", ".aac", ".opus", ".wma", ".mp4"]);
-const DEFAULT_REPLAY_GAIN_CONFIG: ReplayGainScanConfig = {
+const DEFAULT_REPLAY_GAIN_CONFIG: Required<ReplayGainScanConfig> = {
   enabled: true,
   command: "rsgain",
   truePeak: false,
   timeoutMs: 120000,
+  maxConcurrent: 1,
+  maxOutputBytes: 256 * 1024,
 };
 
 export interface ReplayGainScanConfig {
@@ -21,6 +23,8 @@ export interface ReplayGainScanConfig {
   command?: string;
   truePeak?: boolean;
   timeoutMs?: number;
+  maxConcurrent?: number;
+  maxOutputBytes?: number;
 }
 
 interface ReplayGainScanResult {
@@ -55,6 +59,9 @@ export class Library {
   private pendingFiles = new Map<string, ReturnType<typeof setTimeout>>(); // filepath -> debounce timer
   private replayGainConfig: Required<ReplayGainScanConfig>;
   private replayGainAvailable: boolean | null = null;
+  private replayGainAvailabilityCheck: Promise<boolean> | null = null;
+  private replayGainActive = 0;
+  private replayGainQueue: Array<() => void> = [];
   
   // Scan progress tracking
   private _scanProgress = { scanning: false, processed: 0, total: 0 };
@@ -75,12 +82,19 @@ export class Library {
       enabled: replayGainConfig.enabled ?? DEFAULT_REPLAY_GAIN_CONFIG.enabled,
       command: replayGainConfig.command ?? DEFAULT_REPLAY_GAIN_CONFIG.command,
       truePeak: replayGainConfig.truePeak ?? DEFAULT_REPLAY_GAIN_CONFIG.truePeak,
-      timeoutMs: replayGainConfig.timeoutMs ?? DEFAULT_REPLAY_GAIN_CONFIG.timeoutMs,
+      timeoutMs: this.normalizePositiveInteger(replayGainConfig.timeoutMs, DEFAULT_REPLAY_GAIN_CONFIG.timeoutMs!),
+      maxConcurrent: this.normalizePositiveInteger(replayGainConfig.maxConcurrent, DEFAULT_REPLAY_GAIN_CONFIG.maxConcurrent!),
+      maxOutputBytes: this.normalizePositiveInteger(replayGainConfig.maxOutputBytes, DEFAULT_REPLAY_GAIN_CONFIG.maxOutputBytes!),
     };
     this.cacheDb.run("PRAGMA journal_mode = WAL");
     this.initCacheDb();
   }
 
+  private normalizePositiveInteger(value: number | undefined, fallback: number): number {
+    if (value == null || !Number.isFinite(value)) return fallback;
+    return Math.max(1, Math.floor(value));
+  }
+
   private initCacheDb(): void {
     this.cacheDb.run(`
       CREATE TABLE IF NOT EXISTS file_cache (
@@ -229,7 +243,9 @@ export class Library {
   private async ensureReplayGainAvailable(): Promise<boolean> {
     if (!this.replayGainConfig.enabled) return false;
     if (this.replayGainAvailable !== null) return this.replayGainAvailable;
+    if (this.replayGainAvailabilityCheck) return this.replayGainAvailabilityCheck;
 
+    this.replayGainAvailabilityCheck = this.withReplayGainSlot(async () => {
       try {
         const { stdout } = await this.runCommand(this.replayGainConfig.command, ["--version"], 10000);
         const version = stdout.trim().split(/\r?\n/)[0] || "available";
@@ -239,9 +255,14 @@ export class Library {
         const message = e instanceof Error ? e.message : String(e);
         console.warn(`[Library] rsgain unavailable, ReplayGain scan skipped: ${message}`);
         this.replayGainAvailable = false;
+      } finally {
+        this.replayGainAvailabilityCheck = null;
       }
 
       return this.replayGainAvailable;
+    });
+
+    return this.replayGainAvailabilityCheck;
   }
 
   private async scanReplayGain(filePath: string): Promise<ReplayGainScanResult | null> {
@@ -262,7 +283,9 @@ export class Library {
     args.push(filePath);
 
     try {
-      const { stdout } = await this.runCommand(this.replayGainConfig.command, args, this.replayGainConfig.timeoutMs);
+      const { stdout } = await this.withReplayGainSlot(() =>
+        this.runCommand(this.replayGainConfig.command, args, this.replayGainConfig.timeoutMs)
+      );
       return this.parseReplayGainOutput(stdout);
     } catch (e) {
       const message = e instanceof Error ? e.message : String(e);
@@ -295,44 +318,117 @@ export class Library {
     return { replayGainDb, replayPeak };
   }
 
+  private withReplayGainSlot<T>(task: () => Promise<T>): Promise<T> {
+    return new Promise<T>((resolve, reject) => {
+      const run = () => {
+        this.replayGainActive++;
+        Promise.resolve()
+          .then(task)
+          .then(resolve, reject)
+          .finally(() => {
+            this.replayGainActive--;
+            this.replayGainQueue.shift()?.();
+          });
+      };
+
+      if (this.replayGainActive < this.replayGainConfig.maxConcurrent) {
+        run();
+      } else {
+        this.replayGainQueue.push(run);
+      }
+    });
+  }
+
+  private terminateProcess(proc: ChildProcess): void {
+    if (process.platform === "win32" && proc.pid) {
+      try {
+        const killer = spawn("taskkill", ["/pid", String(proc.pid), "/t", "/f"], {
+          windowsHide: true,
+          stdio: "ignore",
+        });
+        killer.unref();
+        return;
+      } catch {
+        // Fall back to direct child termination below.
+      }
+    }
+
+    proc.kill("SIGKILL");
+  }
+
   private runCommand(command: string, args: string[], timeoutMs: number): Promise<{ stdout: string; stderr: string }> {
     return new Promise((resolve, reject) => {
-      const proc = spawn(command, args, { windowsHide: true });
+      const proc = spawn(command, args, {
+        windowsHide: true,
+        stdio: ["ignore", "pipe", "pipe"],
+      });
       let stdout = "";
       let stderr = "";
       let finished = false;
-      let timeout: ReturnType<typeof setTimeout>;
+      let timedOut = false;
-
+      let outputExceeded = false;
-      const finish = (callback: () => void) => {
+      const maxOutputBytes = this.replayGainConfig.maxOutputBytes;
-        if (finished) return;
+      const timeout = setTimeout(() => {
-        finished = true;
+        timedOut = true;
-        clearTimeout(timeout);
+        this.terminateProcess(proc);
-        callback();
-      };
-
-      timeout = setTimeout(() => {
-        proc.kill();
-        finish(() => reject(new Error(`timed out after ${timeoutMs}ms`)));
       }, timeoutMs);
+      const killGraceTimeout = setTimeout(() => {
+        if (!finished && timedOut) {
+          finish(() => reject(new Error(`timed out after ${timeoutMs}ms and did not exit after termination`)));
+        }
+      }, timeoutMs + 5000);
 
-      proc.stdout.on("data", (data) => {
+      const onStdout = (data: Buffer) => {
-        stdout += data.toString();
+        stdout = appendOutput(stdout, data);
-      });
+      };
-      proc.stderr.on("data", (data) => {
+      const onStderr = (data: Buffer) => {
-        stderr += data.toString();
+        stderr = appendOutput(stderr, data);
-      });
+      };
-      proc.on("error", (e) => {
+      const onError = (e: Error) => {
         finish(() => reject(e));
-      });
+      };
-      proc.on("close", (code) => {
+      const onClose = (code: number | null) => {
         finish(() => {
-          if (code === 0) {
+          if (timedOut) {
+            reject(new Error(`timed out after ${timeoutMs}ms`));
+          } else if (outputExceeded) {
+            reject(new Error(`output exceeded ${maxOutputBytes} bytes`));
+          } else if (code === 0) {
             resolve({ stdout, stderr });
           } else {
             reject(new Error(stderr.trim() || `exit code ${code}`));
           }
         });
-      });
+      };
+
+      const finish = (callback: () => void) => {
+        if (finished) return;
+        finished = true;
+        clearTimeout(timeout);
+        clearTimeout(killGraceTimeout);
+        proc.stdout.off("data", onStdout);
+        proc.stderr.off("data", onStderr);
+        proc.off("error", onError);
+        proc.off("close", onClose);
+        callback();
+      };
+
+      const appendOutput = (current: string, data: Buffer): string => {
+        if (outputExceeded) return current;
+
+        const text = data.toString();
+        const next = current + text;
+        if (next.length <= maxOutputBytes) return next;
+
+        outputExceeded = true;
+        this.terminateProcess(proc);
+        return next.slice(0, maxOutputBytes);
+      };
+
+      proc.stdout.on("data", onStdout);
+      proc.stderr.on("data", onStderr);
+      proc.on("error", onError);
+      proc.on("close", onClose);
     });
   }
 
@@ -633,6 +729,10 @@ export class Library {
       this.watcher.close();
       this.watcher = null;
     }
+    for (const timer of this.pendingFiles.values()) {
+      clearTimeout(timer);
+    }
+    this.pendingFiles.clear();
   }
 
   // Event handling

public/channelSync.js

@@ -16,7 +16,7 @@
       M.channels = channels;
       M.renderChannelList();
       // Try saved channel first, fall back to default
-      const savedChannelId = localStorage.getItem("blastoise_channel");
+      const savedChannelId = M.getSavedChannelId();
       const savedChannel = savedChannelId && channels.find(c => c.id === savedChannelId);
       const targetChannel = savedChannel || channels.find(c => c.isDefault) || channels[0];
       M.connectChannel(targetChannel.id);
@@ -58,22 +58,31 @@
       M.showToast("Cannot delete default channel");
       return;
     }
-    if (!confirm(`Delete channel "${channel.name}"?`)) return;
+    M.showConfirmToast(`Delete channel "${channel.name}"?`, async () => {
       try {
         const res = await fetch(`/api/channels/${channelId}`, { method: "DELETE" });
         if (!res.ok) {
           const err = await res.json();
-        M.showToast(err.error || "Failed to delete channel");
+          M.showToast(err.error || "Failed to delete channel", "error");
           return;
         }
+        if (M.getSavedChannelId() === channelId) {
+          M.clearRememberedChannel();
+        }
         M.showToast(`Channel "${channel.name}" deleted`);
       } catch (e) {
-      M.showToast("Failed to delete channel");
+        M.showToast("Failed to delete channel", "error");
       }
+    }, { confirmText: "Delete", duration: 15000 });
   };
   
   // New channel creation with slideout input
   M.createNewChannel = async function() {
+    if (!M.canCreateUserContent()) {
+      M.showToast("Sign in to create channels", "warning");
+      return;
+    }
+
     const header = M.$("#channels-panel .panel-header");
     const btn = M.$("#btn-new-channel");
     
@@ -241,7 +250,8 @@
       oldWs.close();
     }
     M.currentChannelId = id;
-    localStorage.setItem("blastoise_channel", id);
+    M.rememberChannel(id);
+    setPlaybackBlocked(false);
     const proto = location.protocol === "https:" ? "wss:" : "ws:";
     M.ws = new WebSocket(proto + "//" + location.host + "/api/channels/" + id + "/ws");
     
@@ -259,6 +269,7 @@
       // Handle channel switch confirmation
       if (data.type === "switched") {
         M.currentChannelId = data.channelId;
+        M.rememberChannel(data.channelId);
         M.renderChannelList();
         return;
       }
@@ -268,6 +279,7 @@
         M.wantSync = false;
         M.synced = false;
         M.audio.pause();
+        setPlaybackBlocked(false);
         if (M.ws) {
           const oldWs = M.ws;
           M.ws = null;
@@ -341,13 +353,18 @@
     M.ws.onclose = () => {
       M.synced = false;
       M.ws = null;
+      setPlaybackBlocked(false);
       M.$("#sync-indicator").classList.add("disconnected");
       M.updateUI();
       // Auto-reconnect if user wants to be synced
       // Use faster retry (2s) if never connected, slower (3s) if disconnected after connecting
       if (M.wantSync) {
         const delay = wasConnected ? 3000 : 2000;
-        setTimeout(() => M.connectChannel(id), delay);
+        setTimeout(() => {
+          if (M.ws) return;
+          const reconnectId = M.currentChannelId || M.getSavedChannelId() || id;
+          M.connectChannel(reconnectId);
+        }, delay);
       }
     };
     
@@ -359,6 +376,85 @@
     };
   };
 
+  let playbackUnlockListenersInstalled = false;
+  let playbackBlockedToastShown = false;
+
+  function removePlaybackUnlockListeners() {
+    if (!playbackUnlockListenersInstalled) return;
+    document.removeEventListener("pointerdown", retryPlaybackFromUserActivation, true);
+    document.removeEventListener("keydown", retryPlaybackFromUserActivation, true);
+    playbackUnlockListenersInstalled = false;
+  }
+
+  function installPlaybackUnlockListeners() {
+    if (playbackUnlockListenersInstalled) return;
+    document.addEventListener("pointerdown", retryPlaybackFromUserActivation, true);
+    document.addEventListener("keydown", retryPlaybackFromUserActivation, true);
+    playbackUnlockListenersInstalled = true;
+  }
+
+  function setPlaybackBlocked(blocked) {
+    const changed = M.playbackBlocked !== blocked;
+    M.playbackBlocked = blocked;
+
+    if (blocked) {
+      installPlaybackUnlockListeners();
+      if (!playbackBlockedToastShown) {
+        playbackBlockedToastShown = true;
+        M.showToast("Click play or press any key to resume this channel", "warning", 7000);
+      }
+    } else {
+      playbackBlockedToastShown = false;
+      removePlaybackUnlockListeners();
+    }
+
+    if (changed) M.updateUI?.();
+  }
+
+  async function ensureSyncedAudioSource(timestamp, forceReload = false) {
+    if (!M.currentTrackId) return;
+
+    if (forceReload || !M.audio.src) {
+      const cachedUrl = await M.loadTrackBlob(M.currentTrackId);
+      M.audio.src = cachedUrl || M.getTrackUrl(M.currentTrackId);
+    }
+
+    const nextTime = Number.isFinite(timestamp) ? Math.max(0, timestamp) : 0;
+    try {
+      M.audio.currentTime = nextTime;
+    } catch (error) {
+      console.warn("[Playback] Unable to set synced time yet", error);
+    }
+  }
+
+  async function playSyncedAudio(timestamp, forceReload = false) {
+    if (!M.currentTrackId || M.serverPaused) return false;
+    await ensureSyncedAudioSource(timestamp, forceReload);
+    M.resumeVisualizer?.();
+
+    try {
+      await M.audio.play();
+      setPlaybackBlocked(false);
+      return true;
+    } catch (error) {
+      console.warn("[Playback] Browser blocked or delayed autoplay", error);
+      setPlaybackBlocked(true);
+      return false;
+    }
+  }
+
+  function retryPlaybackFromUserActivation() {
+    if (!M.playbackBlocked) return;
+    M.retryBlockedPlayback?.();
+  }
+
+  M.retryBlockedPlayback = async function() {
+    if (!M.currentTrackId || !M.synced || M.serverPaused) return false;
+    return playSyncedAudio(M.getServerTime(), !M.audio.src);
+  };
+
+  M.audio.addEventListener("play", () => setPlaybackBlocked(false));
+  
   // Handle channel state update from server
   M.handleUpdate = async function(data) {
     console.log("[WS] State update:", { 
@@ -388,6 +484,7 @@
     
     if (!data.track) {
       M.setTrackTitle("No tracks");
+      setPlaybackBlocked(false);
       return;
     }
     M.serverTimestamp = data.currentTimestamp;
@@ -426,15 +523,11 @@
       if (!M.serverPaused) {
         // Server is playing - ensure we're playing and synced
         if (isNewTrack || !M.audio.src) {
-          // Try cache first
+          await playSyncedAudio(data.currentTimestamp, true);
-          const cachedUrl = await M.loadTrackBlob(M.currentTrackId);
+        } else if (M.audio.paused || M.playbackBlocked) {
-          M.audio.src = cachedUrl || M.getTrackUrl(M.currentTrackId);
+          await playSyncedAudio(data.currentTimestamp, false);
-          M.audio.currentTime = data.currentTimestamp;
-          M.audio.play().catch(() => {});
-        } else if (M.audio.paused) {
-          M.audio.currentTime = data.currentTimestamp;
-          M.audio.play().catch(() => {});
         } else {
+          setPlaybackBlocked(false);
           // Check drift
           const drift = Math.abs(M.audio.currentTime - data.currentTimestamp);
           if (drift >= 2) {
@@ -444,6 +537,7 @@
         }
       } else {
         // Server is paused - ensure we're paused too
+        setPlaybackBlocked(false);
         if (!M.audio.paused) {
           M.audio.pause();
         }

public/controls.js

@@ -4,6 +4,13 @@
 (function() {
   const M = window.MusicRoom;
 
+  function blockSyncedControlIfNeeded() {
+    if (!M.synced || M.canControl()) return false;
+    M.flashPermissionDenied();
+    M.showToast("Sign in to control playback", "warning", 2500);
+    return true;
+  }
+  
   // Load saved volume
   const savedVolume = localStorage.getItem(M.STORAGE_KEY);
   if (savedVolume !== null) {
@@ -17,8 +24,14 @@
   // Toggle play/pause
   function togglePlayback() {
     if (!M.currentTrackId) return;
+    M.resumeVisualizer?.();
     
     if (M.synced) {
+      if (!M.serverPaused && M.playbackBlocked) {
+        M.retryBlockedPlayback?.();
+        return;
+      }
+      if (blockSyncedControlIfNeeded()) return;
       if (M.ws && M.ws.readyState === WebSocket.OPEN) {
         M.ws.send(JSON.stringify({ action: M.serverPaused ? "unpause" : "pause" }));
       }
@@ -40,9 +53,11 @@
   // Jump to a specific track index
   async function jumpToTrack(index) {
     if (M.queue.length === 0) return;
+    M.resumeVisualizer?.();
     const newIndex = (index + M.queue.length) % M.queue.length;
     
     if (M.synced && M.currentChannelId) {
+      if (blockSyncedControlIfNeeded()) return;
       const res = await fetch("/api/channels/" + M.currentChannelId + "/jump", {
         method: "POST",
         headers: { "Content-Type": "application/json" },
@@ -136,6 +151,7 @@
       M.updateModeButton();
       return;
     }
+    if (blockSyncedControlIfNeeded()) return;
     
     // Synced mode - send to server
     const currentIdx = modeOrder.indexOf(M.playbackMode);
@@ -175,6 +191,7 @@
     const seekTime = pct * dur;
 
     if (M.synced && M.currentChannelId) {
+      if (blockSyncedControlIfNeeded()) return;
       fetch("/api/channels/" + M.currentChannelId + "/seek", {
         method: "POST",
         headers: { "Content-Type": "application/json" },

public/core.js

@@ -25,6 +25,9 @@ window.MusicRoom = {
   // Volume
   preMuteVolume: 1,
   STORAGE_KEY: "blastoise_volume",
+  CHANNEL_STORAGE_KEY: "blastoise_channel",
+  THEME_STORAGE_KEY: "blastoise_theme",
+  VISUALIZER_STORAGE_KEY: "blastoise_visualizer",
   
   // Playback state
   localTimestamp: 0,
@@ -65,3 +68,63 @@ window.MusicRoom = {
   lastBufferPct: -1,
   lastSpeedText: ""
 };
+
+(function() {
+  const M = window.MusicRoom;
+  const CHANNEL_COOKIE_MAX_AGE = 60 * 60 * 24 * 400;
+
+  M.getCookieValue = function(name) {
+    const prefix = `${name}=`;
+    return document.cookie
+      .split(";")
+      .map(cookie => cookie.trim())
+      .find(cookie => cookie.startsWith(prefix))
+      ?.slice(prefix.length) || null;
+  };
+
+  M.setCookieValue = function(name, value, maxAge = CHANNEL_COOKIE_MAX_AGE) {
+    document.cookie = `${name}=${encodeURIComponent(value)}; Path=/; SameSite=Lax; Max-Age=${maxAge}`;
+  };
+
+  M.clearCookieValue = function(name) {
+    document.cookie = `${name}=; Path=/; SameSite=Lax; Max-Age=0`;
+  };
+
+  M.getSavedChannelId = function() {
+    const cookieValue = M.getCookieValue(M.CHANNEL_STORAGE_KEY);
+    if (cookieValue) {
+      try {
+        return decodeURIComponent(cookieValue);
+      } catch {
+        M.clearRememberedChannel();
+      }
+    }
+
+    try {
+      const storedValue = localStorage.getItem(M.CHANNEL_STORAGE_KEY);
+      if (storedValue) {
+        M.rememberChannel(storedValue);
+        return storedValue;
+      }
+    } catch {}
+
+    return null;
+  };
+
+  M.rememberChannel = function(channelId) {
+    if (!channelId) return;
+    M.setCookieValue(M.CHANNEL_STORAGE_KEY, channelId);
+
+    try {
+      localStorage.setItem(M.CHANNEL_STORAGE_KEY, channelId);
+    } catch {}
+  };
+
+  M.clearRememberedChannel = function() {
+    M.clearCookieValue(M.CHANNEL_STORAGE_KEY);
+
+    try {
+      localStorage.removeItem(M.CHANNEL_STORAGE_KEY);
+    } catch {}
+  };
+})();

public/index.html

@@ -4,7 +4,7 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>Blastoise! A very special music server</title>
-<link rel="stylesheet" href="/styles.css?v=20">
+<link rel="stylesheet" href="/styles.css?v=23">
 </head>
 <body>
 <div id="app">
@@ -47,14 +47,44 @@
           <button id="btn-logout">logout</button>
         </div>
       </div>
-      <div id="stream-select"></div>
+      <div id="stream-select">
+        <select id="theme-select" title="Theme">
+          <optgroup label="Themes">
+            <option value="default">Default</option>
+            <option value="phosphor">Phosphor Noir</option>
+            <option value="vaporwave">Vaporwave Pool</option>
+            <option value="sunrise">Sunrise Radio</option>
+            <option value="paper">Paper Sleeve</option>
+            <option value="contrast">High Contrast</option>
+            <option value="aquarium">Aquarium Glass</option>
+            <option value="amber">Terminal Amber</option>
+          </optgroup>
+          <optgroup label="Layouts">
+            <option value="compact">Tiny Desk</option>
+            <option value="cinema">Cinema Queue</option>
+          </optgroup>
+          <optgroup label="Bad Ideas">
+            <option value="hotdog">Hot Dog Stand</option>
+            <option value="spreadsheet">Bad Spreadsheet</option>
+            <option value="myspace">MySpace Accident</option>
+            <option value="sideways">Sideways Doomscroll</option>
+          </optgroup>
+        </select>
+        <select id="visualizer-select" title="Visualizer">
+          <option value="off">Visualizer off</option>
+          <option value="bars">Bars</option>
+          <option value="wave">Waveform</option>
+          <option value="radial">Radial</option>
+          <option value="pulse">Pulse</option>
+        </select>
+      </div>
     </div>
     
     <!-- Mobile tab bar -->
     <div id="mobile-tabs">
       <button class="mobile-tab active" data-panel="channels-panel">Channels</button>
-      <button class="mobile-tab" data-panel="library-panel">Library</button>
       <button class="mobile-tab" data-panel="queue-panel">Queue</button>
+      <button class="mobile-tab" data-panel="library-panel">Library</button>
     </div>
     
     <div id="main-content">
@@ -78,6 +108,17 @@
               <input type="file" id="file-input" multiple accept=".mp3,.ogg,.flac,.wav,.m4a,.aac,.opus,.wma,.mp4" style="display:none">
             </div>
             <div id="scan-progress" class="scan-progress hidden"></div>
+            <div id="recent-library-section" class="library-section">
+              <div class="library-section-header">
+                <h4>Recently added</h4>
+                <span id="recent-library-count"></span>
+              </div>
+              <div id="recent-library"></div>
+            </div>
+            <div class="library-section-header library-all-header">
+              <h4>All songs</h4>
+              <span id="library-count"></span>
+            </div>
             <div id="library"></div>
             <div id="add-panel" class="add-panel hidden">
               <button id="btn-add-close" class="add-panel-close">Close</button>
@@ -139,6 +180,11 @@
       </div>
     </div>
 
+    <div id="visualizer-shell" class="visualizer-shell hidden">
+      <canvas id="visualizer-canvas" aria-hidden="true"></canvas>
+      <button id="btn-visualizer-fullscreen" class="visualizer-fullscreen-btn" title="Fullscreen visualizer" aria-label="Fullscreen visualizer">⛶</button>
+    </div>
+
     <div id="player-bar">
       <div id="now-playing">
         <div id="channel-name"></div>
@@ -179,7 +225,9 @@
 </div>
 <script src="/trackStorage.js"></script>
 <script src="/core.js"></script>
+<script src="/themes.js"></script>
 <script src="/utils.js"></script>
+<script src="/visualizer.js"></script>
 <script src="/trackComponent.js"></script>
 <script src="/trackContainer.js"></script>
 <script src="/audioCache.js"></script>

public/init.js

@@ -117,11 +117,7 @@
   
   // Update UI based on server status
   function updateFeatureVisibility() {
-    const fetchBtn = M.$("#btn-fetch-url");
+    if (M.updatePermissionUI) M.updatePermissionUI();
-    if (fetchBtn) {
-      const ytdlpEnabled = M.serverStatus?.ytdlp?.enabled && M.serverStatus?.ytdlp?.available;
-      fetchBtn.style.display = ytdlpEnabled ? "" : "none";
-    }
   }
   
   // Initialize the application

public/playlists.js

@@ -33,6 +33,7 @@
     const myContainer = $('#my-playlists');
     const sharedContainer = $('#shared-playlists');
     if (!myContainer || !sharedContainer) return;
+    if (M.updatePermissionUI) M.updatePermissionUI();
 
     // My playlists
     if (myPlaylists.length === 0) {
@@ -107,7 +108,7 @@
     }
 
     header.textContent = selectedPlaylist.name;
-    actions.classList.remove('hidden');
+    actions.classList.toggle('hidden', !M.canControl());
 
     const isMine = myPlaylists.some(p => p.id === selectedPlaylistId);
 
@@ -144,8 +145,10 @@
     if (!playlist) return;
 
     const items = [];
+    const canEditQueue = M.canControl();
 
     // Add to queue options
+    if (canEditQueue) {
       items.push({
         label: '▶ Add to Queue',
         action: () => addPlaylistToQueue(playlistId)
@@ -154,8 +157,11 @@
         label: '⏭ Play Next',
         action: () => addPlaylistToQueue(playlistId, true)
       });
+    }
 
+    if (canEditQueue && (isMine || M.canCreateUserContent())) {
       items.push({ separator: true });
+    }
 
     if (isMine) {
       // Rename
@@ -183,9 +189,9 @@
       items.push({
         label: '🗑️ Delete',
         action: () => deletePlaylist(playlistId),
-        className: 'danger'
+        danger: true
       });
-    } else {
+    } else if (M.canCreateUserContent()) {
       // Copy to my playlists
       items.push({
         label: '📋 Copy to My Playlists',
@@ -193,10 +199,20 @@
       });
     }
 
+    while (items[0]?.separator) items.shift();
+    while (items[items.length - 1]?.separator) items.pop();
+    if (items.length === 0) return;
+
     M.contextMenu.show(e, items);
   }
 
   async function addPlaylistToQueue(playlistId, playNext = false) {
+    if (!M.canControl()) {
+      M.flashPermissionDenied();
+      showToast('Sign in to control playback', 'warning');
+      return;
+    }
+
     const playlist = [...myPlaylists, ...sharedPlaylists].find(p => p.id === playlistId);
     if (!playlist || playlist.trackIds.length === 0) {
       showToast('Playlist is empty', 'error');
@@ -273,6 +289,7 @@
     const playlist = myPlaylists.find(p => p.id === playlistId);
     if (!playlist) return;
 
+    M.showConfirmToast(`Delete playlist "${playlist.name}"?`, async () => {
       try {
         const res = await fetch(`/api/playlists/${playlistId}`, { method: 'DELETE' });
         if (!res.ok) throw new Error('Failed to delete playlist');
@@ -288,6 +305,7 @@
         console.error('Failed to delete playlist:', err);
         showToast('Failed to delete playlist', 'error');
       }
+    }, { confirmText: 'Delete', duration: 15000 });
   }
 
   function startRenamePlaylist(playlistId) {
@@ -448,6 +466,7 @@
 
   // Show "Add to Playlist" submenu
   function showAddToPlaylistMenu(trackIds) {
+    if (!M.canCreateUserContent()) return null;
     if (myPlaylists.length === 0) {
       showToast('Create a playlist first', 'info');
       return null;
@@ -471,6 +490,11 @@
     const btnNew = $('#btn-new-playlist');
     if (btnNew) {
       btnNew.onclick = () => {
+        if (!M.canCreateUserContent()) {
+          showToast('Sign in to create playlists', 'warning');
+          return;
+        }
+
         // Inline input for new playlist name
         const container = $('#my-playlists');
         const input = document.createElement('input');

public/queue.js

@@ -12,9 +12,12 @@
   // Container instances
   let queueContainer = null;
   let libraryContainer = null;
+  let recentLibraryContainer = null;
   
   // Library search state
   M.librarySearchQuery = "";
+  const RECENT_LIBRARY_WINDOW_MS = 7 * 24 * 60 * 60 * 1000;
+  const RECENT_LIBRARY_LIMIT = 50;
 
   // Download a track to user's device (uses cache if available)
   async function downloadTrack(trackId, filename) {
@@ -190,9 +193,70 @@
   };
 
   // Initialize containers
+  function trackMatchesLibrarySearch(track) {
+    const query = M.librarySearchQuery.toLowerCase();
+    if (!query) return true;
+    const title = track.title?.trim() || track.filename || "";
+    const artist = track.artist || "";
+    const album = track.album || "";
+    return [title, artist, album, track.filename || ""]
+      .some(value => value.toLowerCase().includes(query));
+  }
+
+  function getTrackCreatedMs(track) {
+    const value = Number(track.createdAt ?? track.created_at ?? 0);
+    if (!value || !Number.isFinite(value)) return 0;
+    return value > 1000000000000 ? value : value * 1000;
+  }
+
+  function isRecentlyAdded(track) {
+    const createdMs = getTrackCreatedMs(track);
+    if (!createdMs) return false;
+    const now = Date.now();
+    return createdMs >= now - RECENT_LIBRARY_WINDOW_MS && createdMs <= now + 5 * 60 * 1000;
+  }
+
+  function getLibraryRows() {
+    return M.library
+      .map((track, i) => ({ track, originalIndex: i }))
+      .filter(({ track }) => trackMatchesLibrarySearch(track));
+  }
+
+  function getRecentLibraryRows(limit = true) {
+    const rows = M.library
+      .map((track, i) => ({ track, originalIndex: i }))
+      .filter(({ track }) => isRecentlyAdded(track) && trackMatchesLibrarySearch(track))
+      .sort((a, b) => getTrackCreatedMs(b.track) - getTrackCreatedMs(a.track));
+    return limit ? rows.slice(0, RECENT_LIBRARY_LIMIT) : rows;
+  }
+
+  function updateLibrarySectionLabels() {
+    const recentCount = getRecentLibraryRows(false).length;
+    const visibleRecentCount = Math.min(recentCount, RECENT_LIBRARY_LIMIT);
+    const libraryCount = getLibraryRows().length;
+    const recentCountEl = M.$("#recent-library-count");
+    const libraryCountEl = M.$("#library-count");
+    const hasQuery = M.librarySearchQuery.trim().length > 0;
+
+    if (recentCountEl) {
+      const baseText = hasQuery
+        ? `${recentCount} match${recentCount === 1 ? "" : "es"} from 7 days`
+        : `${recentCount} from 7 days`;
+      recentCountEl.textContent = recentCount > visibleRecentCount
+        ? `${baseText} · newest ${visibleRecentCount}`
+        : baseText;
+    }
+    if (libraryCountEl) {
+      libraryCountEl.textContent = hasQuery
+        ? `${libraryCount} match${libraryCount === 1 ? "" : "es"}`
+        : `${libraryCount} total`;
+    }
+  }
+
   function initContainers() {
     const queueEl = M.$("#queue");
     const libraryEl = M.$("#library");
+    const recentLibraryEl = M.$("#recent-library");
     
     if (queueEl && !queueContainer) {
       queueContainer = M.trackContainer.createContainer({
@@ -209,18 +273,18 @@
         type: 'library',
         element: libraryEl,
         getTracks: () => M.library,
-        getFilteredTracks: () => {
+        getFilteredTracks: getLibraryRows,
-          const query = M.librarySearchQuery.toLowerCase();
+        emptyMessage: "No library matches"
-          if (!query) {
-            return M.library.map((track, i) => ({ track, originalIndex: i }));
-          }
-          return M.library
-            .map((track, i) => ({ track, originalIndex: i }))
-            .filter(({ track }) => {
-              const title = track.title?.trim() || track.filename || '';
-              return title.toLowerCase().includes(query);
       });
     }
+
+    if (recentLibraryEl && !recentLibraryContainer) {
+      recentLibraryContainer = M.trackContainer.createContainer({
+        type: 'library',
+        element: recentLibraryEl,
+        getTracks: () => M.library,
+        getFilteredTracks: getRecentLibraryRows,
+        emptyMessage: "No songs added in the last 7 days"
       });
     }
   }
@@ -254,6 +318,10 @@
 
   M.renderLibrary = function() {
     initContainers();
+    updateLibrarySectionLabels();
+    if (recentLibraryContainer) {
+      recentLibraryContainer.render();
+    }
     if (libraryContainer) {
       libraryContainer.render();
     }
@@ -282,7 +350,21 @@
     
     const activeTrack = container.querySelector(".track.active");
     if (activeTrack) {
-      activeTrack.scrollIntoView({ behavior: "smooth", block: "center" });
+      const containerRect = container.getBoundingClientRect();
+      const trackRect = activeTrack.getBoundingClientRect();
+      const trackTop = trackRect.top - containerRect.top + container.scrollTop;
+      const targetTop = trackTop - (container.clientHeight - activeTrack.offsetHeight) / 2;
+      const maxTop = Math.max(0, container.scrollHeight - container.clientHeight);
+
+      container.scrollTo({
+        top: Math.min(Math.max(0, targetTop), maxTop),
+        behavior: "smooth"
+      });
+      container.scrollLeft = 0;
+
+      if (window.scrollX !== 0) {
+        window.scrollTo({ left: 0, top: window.scrollY, behavior: "auto" });
+      }
     }
   };
 

public/styles.css

@@ -1,8 +1,9 @@
 * { margin: 0; padding: 0; box-sizing: border-box; }
-body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #111; color: #eee; min-height: 100vh; }
+html { width: 100%; max-width: 100%; overflow-x: hidden; overscroll-behavior-x: none; }
-#app { width: 100%; max-width: 1700px; margin: 0 auto; padding: 0.5rem; display: flex; flex-direction: column; min-height: 100vh; }
+body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #111; color: #eee; width: 100%; max-width: 100%; min-height: 100vh; overflow-x: hidden; }
-h1 { font-size: 1rem; color: #888; margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.4rem; }
+#app { width: 100%; max-width: 1700px; min-width: 0; margin: 0 auto; padding: 0.5rem; display: flex; flex-direction: column; min-height: 100vh; overflow-x: hidden; }
-h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppercase; letter-spacing: 0.05em; }
+h1 { font-size: 1rem; color: #aaa; margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.4rem; }
+h3 { font-size: 0.8rem; color: #999; margin-bottom: 0.3rem; text-transform: uppercase; letter-spacing: 0.05em; }
 #sync-indicator { width: 8px; height: 8px; border-radius: 50%; background: #4e8; display: none; flex-shrink: 0; }
 #sync-indicator.visible { display: inline-block; }
 #sync-indicator.disconnected { background: #e44; }
@@ -26,8 +27,8 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 #stream-select select { background: #222; color: #eee; border: 1px solid #333; padding: 0.3rem 0.6rem; border-radius: 4px; font-size: 0.85rem; }
 
 /* Main content - library and queue */
-#main-content { display: flex; gap: 0.5rem; flex: 1; min-height: 0; margin-bottom: 0.5rem; max-width: 1600px; margin-left: auto; margin-right: auto; }
+#main-content { display: flex; gap: 0.5rem; flex: 1; width: 100%; min-width: 0; min-height: 0; margin-bottom: 0.5rem; max-width: 1600px; margin-left: auto; margin-right: auto; overflow-x: hidden; }
-#channels-panel { flex: 0 0 160px; background: #1a1a1a; border-radius: 6px; padding: 0.4rem; display: flex; flex-direction: column; min-height: 250px; max-height: 60vh; }
+#channels-panel { order: 1; flex: 0 0 160px; min-width: 0; background: #1a1a1a; border-radius: 6px; padding: 0.4rem; display: flex; flex-direction: column; min-height: 250px; max-height: 60vh; }
 #channels-list { flex: 1; overflow-y: auto; }
 #channels-list .channel-item { padding: 0.2rem 0.4rem; border-radius: 3px; font-size: 0.8rem; display: flex; flex-direction: column; gap: 0.1rem; }
 #channels-list .channel-item.active { background: #2a4a3a; color: #4e8; }
@@ -35,7 +36,7 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 #channels-list .channel-header:hover { background: #222; }
 #channels-list .channel-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.8rem; }
 #channels-list .channel-name-input { flex: 1; font-size: 0.8rem; background: #111; color: #eee; border: 1px solid #4e8; border-radius: 3px; padding: 0.1rem 0.3rem; outline: none; min-width: 0; }
-#channels-list .listener-count { font-size: 0.65rem; color: #666; flex-shrink: 0; margin-left: 0.3rem; }
+#channels-list .listener-count { font-size: 0.65rem; color: #aaa; flex-shrink: 0; margin-left: 0.3rem; }
 #channels-list .btn-delete-channel { background: none; border: none; color: #666; font-size: 0.9rem; cursor: pointer; padding: 0 0.2rem; line-height: 1; opacity: 0; transition: opacity 0.15s; }
 #channels-list .channel-header:hover .btn-delete-channel { opacity: 1; }
 #channels-list .btn-delete-channel:hover { color: #e44; }
@@ -45,10 +46,12 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 #channels-list .channel-listeners { display: flex; flex-direction: column; margin-left: 0.5rem; border-left: 1px solid #333; padding-left: 0.3rem; }
 #channels-list .listener { font-size: 0.65rem; color: #aaa; padding: 0.05rem 0; position: relative; }
 #channels-list .listener::before { content: ""; position: absolute; left: -0.3rem; top: 50%; width: 0.2rem; height: 1px; background: #333; }
-#channels-list .listener-mult { color: #666; font-size: 0.55rem; }
+#channels-list .listener-mult { color: #999; font-size: 0.55rem; }
-#library-panel, #queue-panel { flex: 0 0 700px; min-width: 0; overflow: hidden; background: #1a1a1a; border-radius: 6px; padding: 0.5rem; display: flex; flex-direction: column; min-height: 250px; max-height: 60vh; position: relative; }
+#library-panel, #queue-panel { flex: 1 1 0; min-width: 0; max-width: 100%; overflow: hidden; background: #1a1a1a; border-radius: 6px; padding: 0.5rem; display: flex; flex-direction: column; min-height: 250px; max-height: 60vh; position: relative; }
+#queue-panel { order: 2; }
+#library-panel { order: 3; }
 .panel-tabs { display: flex; gap: 0; margin-bottom: 0; flex-shrink: 0; }
-.panel-tab { background: #252525; border: none; color: #666; font-family: inherit; font-size: 0.8rem; font-weight: bold; padding: 0.3rem 0.6rem; cursor: pointer; border-radius: 4px 4px 0 0; text-transform: uppercase; letter-spacing: 0.05em; margin-right: 2px; }
+.panel-tab { background: #252525; border: none; color: #999; font-family: inherit; font-size: 0.8rem; font-weight: bold; padding: 0.3rem 0.6rem; cursor: pointer; border-radius: 4px 4px 0 0; text-transform: uppercase; letter-spacing: 0.05em; margin-right: 2px; }
 .panel-tab:hover { color: #aaa; background: #2a2a2a; }
 .panel-tab.active { color: #eee; background: #222; }
 .panel-views { flex: 1; display: flex; flex-direction: column; min-height: 0; overflow: hidden; position: relative; background: #222; border-radius: 0 4px 4px 4px; }
@@ -133,7 +136,7 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 .now-playing-bar { font-size: 0.75rem; color: #4e8; padding: 0.3rem 0.5rem; background: #1a2a1a; border: 1px solid #2a4a3a; border-radius: 4px; margin-bottom: 0.3rem; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
 .now-playing-bar:hover { background: #2a3a2a; }
 .now-playing-bar.hidden { display: none; }
-.now-playing-bar .label { color: #666; }
+.now-playing-bar .label { color: #aaa; }
 .panel-header { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.3rem; }
 .panel-header h3 { margin: 0; flex-shrink: 0; }
 .panel-header select { flex: 1; background: #222; color: #eee; border: 1px solid #333; padding: 0.2rem 0.4rem; border-radius: 4px; font-size: 0.75rem; }
@@ -144,18 +147,26 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 .btn-submit-channel:hover { background: #3a5a4a; }
 .search-input { flex: 1; background: #222; color: #eee; border: 1px solid #333; padding: 0.2rem 0.4rem; border-radius: 4px; font-size: 0.75rem; }
 .search-input::placeholder { color: #666; }
-#library, #queue { flex: 1; overflow-y: auto; overflow-x: hidden; min-width: 0; }
+#library, #queue, #recent-library { flex: 1; overflow-y: auto; overflow-x: hidden; min-width: 0; }
-#library .track, #queue .track, #playlist-tracks .track { padding: 0.3rem 0.5rem; border-radius: 4px; cursor: pointer; font-size: 0.85rem; display: flex; justify-content: space-between; align-items: center; position: relative; user-select: none; min-width: 0; }
+.library-section { flex: 0 0 auto; min-height: 0; display: flex; flex-direction: column; margin-bottom: 0.45rem; }
-#library .track[title], #queue .track[title], #playlist-tracks .track[title] { cursor: pointer; }
+.library-section-header { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin: 0.15rem 0 0.25rem; color: #888; flex-shrink: 0; }
-#library .track:hover, #queue .track:hover, #playlist-tracks .track:hover { background: #222; }
+.library-section-header h4 { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: #aaa; margin: 0; }
+.library-section-header span { color: #666; font-size: 0.68rem; white-space: nowrap; }
+.library-all-header { margin-top: 0.1rem; }
+#recent-library { flex: 0 1 auto; max-height: min(34vh, 220px); border-bottom: 1px solid #262626; padding-bottom: 0.35rem; }
+#library .track, #queue .track, #recent-library .track, #playlist-tracks .track { padding: 0.3rem 0.5rem; border-radius: 4px; cursor: pointer; font-size: 0.85rem; display: flex; justify-content: space-between; align-items: center; position: relative; user-select: none; min-width: 0; }
+#library .track[title], #queue .track[title], #recent-library .track[title], #playlist-tracks .track[title] { cursor: pointer; }
+#library .track:hover, #queue .track:hover, #recent-library .track:hover, #playlist-tracks .track:hover { background: #222; }
 #queue .track.active { background: #2a4a3a; color: #4e8; }
 .cache-indicator { width: 3px; height: 100%; position: absolute; left: 0; top: 0; border-radius: 4px 0 0 4px; }
 .track.cached .cache-indicator { background: #4e8; }
 .track.not-cached .cache-indicator { background: #ea4; }
-.track-number { color: #555; font-size: 0.7rem; min-width: 1.3rem; margin-right: 0.2rem; }
+.track-number { color: #888; font-size: 0.7rem; min-width: 1.3rem; margin-right: 0.2rem; }
 .track-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
 .track-actions { display: flex; align-items: center; gap: 0.4rem; flex-shrink: 0; }
-.track-actions .duration { color: #666; font-size: 0.75rem; }
+.track-actions .duration { color: #999; font-size: 0.75rem; }
+#queue .track.active .track-number,
+#queue .track.active .duration { color: #d6e6dc; }
 .track-actions .track-play-btn { width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; background: #333; border: none; border-radius: 3px; font-size: 0.7rem; color: #aaa; cursor: pointer; transition: background 0.2s, color 0.2s; }
 .track-actions .track-play-btn:hover { background: #48f; color: #fff; }
 .track-actions .track-preview-btn { width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; background: #333; border: none; border-radius: 3px; font-size: 0.7rem; color: #aaa; cursor: pointer; transition: background 0.2s, color 0.2s; }
@@ -165,6 +176,10 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 .track-actions .track-add:hover, .track-actions .track-remove:hover { opacity: 1; background: #444; }
 .track-actions .track-remove { color: #e44; }
 .track-actions .track-add { color: #4e4; }
+.track-actions .track-menu-btn { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; background: #333; border: none; border-radius: 3px; color: #ccc; cursor: pointer; opacity: 0; font-size: 1rem; line-height: 1; padding: 0; transition: opacity 0.2s, background 0.2s; }
+.track-actions .track-menu-btn::before { content: "..."; }
+.track:hover .track-menu-btn, .track-menu-btn:focus-visible { opacity: 0.75; }
+.track-actions .track-menu-btn:hover { opacity: 1; background: #444; }
 
 /* Track selection */
 .track-checkmark { color: #4e8; font-weight: bold; margin-right: 0.4rem; font-size: 0.85rem; }
@@ -187,14 +202,32 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 .context-menu-item.danger:hover { background: #3a2a2a; }
 
 /* Player bar */
-#player-bar { background: #1a1a1a; border-radius: 6px; padding: 0.5rem 0.75rem; display: flex; gap: 0.75rem; align-items: center; }
+.visualizer-shell { --visualizer-bg: rgba(10, 14, 12, 0.9); --visualizer-accent: #44ee88; --visualizer-secondary: #66aaff; --visualizer-muted: rgba(255, 255, 255, 0.16); position: relative; isolation: isolate; width: 100%; max-width: 1600px; height: 118px; margin: 0 auto 0.5rem auto; background: #121816; border: 1px solid #26382f; border-radius: 6px; overflow: hidden; min-width: 0; flex: 0 0 auto; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03), 0 12px 30px rgba(0,0,0,0.18); }
-#now-playing { width: 180px; flex-shrink: 0; }
+#visualizer-canvas { display: block; width: 100%; height: 100%; }
+.visualizer-fullscreen-btn { position: absolute; top: 0.45rem; right: 0.45rem; z-index: 2; width: 30px; height: 30px; padding: 0; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,0.42); border: 1px solid rgba(255,255,255,0.24); border-radius: 4px; color: #fff; font-size: 1rem; line-height: 1; opacity: 0; transition: opacity 0.15s, background 0.15s, transform 0.15s; backdrop-filter: blur(4px); }
+.visualizer-shell:hover .visualizer-fullscreen-btn,
+.visualizer-shell:focus-within .visualizer-fullscreen-btn,
+.visualizer-shell.is-fullscreen .visualizer-fullscreen-btn,
+.visualizer-shell:fullscreen .visualizer-fullscreen-btn { opacity: 0.86; }
+.visualizer-fullscreen-btn:hover { background: rgba(0,0,0,0.68); transform: scale(1.04); }
+.visualizer-shell.is-fullscreen,
+.visualizer-shell:fullscreen,
+.visualizer-shell:-webkit-full-screen { width: 100vw; height: 100vh; max-width: none; margin: 0; border: 0; border-radius: 0; background: #050505; box-shadow: none; }
+.visualizer-shell.is-fullscreen { position: fixed; inset: 0; z-index: 3000; }
+.visualizer-shell.is-fullscreen #visualizer-canvas,
+.visualizer-shell:fullscreen #visualizer-canvas,
+.visualizer-shell:-webkit-full-screen #visualizer-canvas { width: 100vw; height: 100vh; }
+.visualizer-shell.is-fullscreen .visualizer-fullscreen-btn,
+.visualizer-shell:fullscreen .visualizer-fullscreen-btn,
+.visualizer-shell:-webkit-full-screen .visualizer-fullscreen-btn { top: 1rem; right: 1rem; width: 40px; height: 40px; font-size: 1.4rem; }
+#player-bar { background: #1a1a1a; border-radius: 6px; padding: 0.5rem 0.75rem; display: flex; gap: 0.75rem; align-items: center; min-width: 0; max-width: 100%; overflow-x: hidden; }
+#now-playing { width: 180px; flex: 0 1 180px; min-width: 0; }
 #channel-name { font-size: 0.7rem; color: #666; margin-bottom: 0.1rem; }
-#track-name { font-size: 0.9rem; font-weight: 600; overflow: hidden; position: relative; }
+#track-name { font-size: 0.9rem; font-weight: 600; overflow: hidden; position: relative; min-width: 0; }
 #track-name .marquee-inner { display: inline-block; white-space: nowrap; }
 #track-name.scrolling .marquee-inner { animation: scroll-marquee 8s linear infinite; }
 @keyframes scroll-marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
-#player-controls { flex: 1; }
+#player-controls { flex: 1 1 auto; min-width: 0; }
 #progress-row { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.2rem; }
 #progress-row.denied { animation: flash-red 0.5s ease-out; }
 @keyframes flash-red { 0% { background: #e44; } 100% { background: transparent; } }
@@ -211,20 +244,22 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 #btn-mode.mode-shuffle { color: #c4f; text-shadow: 0 0 6px #c4f; }
 #btn-mode:hover { opacity: 0.8; }
 #status-icon { font-size: 0.85rem; width: 1rem; text-align: center; cursor: pointer; }
-#progress-container { background: #222; border-radius: 4px; height: 5px; cursor: pointer; position: relative; flex: 1; }
+#status-icon.playback-blocked { color: #eb0; text-shadow: 0 0 8px rgba(238, 187, 0, 0.65); }
+.control-disabled { opacity: 0.45 !important; cursor: not-allowed !important; }
+#progress-container { background: #222; border-radius: 4px; height: 5px; cursor: pointer; position: relative; flex: 1; min-width: 0; }
 #progress-bar { background: #555; height: 100%; border-radius: 4px; width: 0%; transition: width 0.3s linear; pointer-events: none; }
 #progress-bar.playing.synced { background: #4e8; }
 #progress-bar.playing.local { background: #c4f; }
 #progress-bar.muted { background: #555 !important; }
 #seek-tooltip { position: absolute; bottom: 10px; background: #333; color: #eee; padding: 2px 5px; border-radius: 3px; font-size: 0.7rem; pointer-events: none; display: none; transform: translateX(-50%); }
-#time { font-size: 0.75rem; color: #888; margin: 0; line-height: 1; white-space: nowrap; }
+#time { font-size: 0.75rem; color: #aaa; margin: 0; line-height: 1; white-space: nowrap; }
 #buffer-bar { display: flex; gap: 1px; margin-bottom: 0.2rem; }
 #buffer-bar .segment { flex: 1; height: 2px; background: #333; border-radius: 1px; }
 #buffer-bar .segment.available { background: #396; }
 #buffer-bar .segment.loading { background: #666; animation: throb 0.6s ease-in-out infinite alternate; }
 @keyframes throb { from { background: #444; } to { background: #888; } }
-#download-speed { font-size: 0.6rem; color: #555; text-align: right; }
+#download-speed { font-size: 0.6rem; color: #888; text-align: right; }
-#volume-controls { display: flex; gap: 0.4rem; align-items: center; }
+#volume-controls { display: flex; gap: 0.4rem; align-items: center; min-width: 0; }
 #btn-stream-only { font-size: 0.7rem; cursor: pointer; color: #666; transition: color 0.2s, text-shadow 0.2s; letter-spacing: 0.05em; }
 #btn-stream-only:hover { color: #888; }
 #btn-stream-only.active { color: #4af; text-shadow: 0 0 6px #4af; }
@@ -235,8 +270,9 @@ h3 { font-size: 0.8rem; color: #666; margin-bottom: 0.3rem; text-transform: uppe
 /* Common */
 button { background: #222; color: #eee; border: 1px solid #333; padding: 0.4rem 1rem; border-radius: 4px; cursor: pointer; font-size: 0.85rem; }
 button:hover { background: #333; }
-#status { margin-top: 0.3rem; font-size: 0.75rem; color: #666; text-align: center; }
+.hidden { display: none !important; }
-.empty { color: #666; font-style: italic; font-size: 0.85rem; }
+#status { margin-top: 0.3rem; font-size: 0.75rem; color: #888; text-align: center; }
+.empty { color: #999; font-style: italic; font-size: 0.85rem; }
 
 /* Login panel */
 #login-panel { display: flex; flex-direction: column; gap: 0.75rem; padding: 1.5rem; background: #1a1a1a; border-radius: 6px; border: 1px solid #333; max-width: 360px; margin: auto; }
@@ -258,8 +294,10 @@ button:hover { background: #333; }
 #guest-section .guest-btn { width: 100%; background: #333; color: #eee; border: 1px solid #444; padding: 0.5rem; border-radius: 4px; font-size: 0.9rem; cursor: pointer; }
 #guest-section .guest-btn:hover { background: #444; }
 
-#player-content { display: none; flex-direction: column; flex: 1; }
+#player-content { display: none; flex-direction: column; flex: 1; min-height: 0; }
 #player-content.visible { display: flex; }
+#player-content.visualizer-active #main-content { flex: 0 1 60vh; max-height: 60vh; }
+#player-content.visualizer-active .visualizer-shell { flex: 1 1 118px; height: auto; min-height: 118px; }
 
 ::-webkit-scrollbar { width: 6px; }
 ::-webkit-scrollbar-track { background-color: #111; border-radius: 3px; }
@@ -267,10 +305,16 @@ button:hover { background: #333; }
 ::-webkit-scrollbar-thumb:hover { background-color: #555; }
 
 /* Toast notifications */
-#toast-container { position: fixed; top: 0.5rem; left: 0.5rem; display: flex; flex-direction: column; gap: 0.4rem; z-index: 1000; pointer-events: none; max-height: 80vh; overflow-y: auto; }
+#toast-container { position: fixed; top: 0.5rem; right: 0.5rem; display: flex; flex-direction: column; gap: 0.4rem; z-index: 1000; pointer-events: none; max-width: 320px; max-height: 50vh; overflow-y: auto; }
 .toast { background: #1a3a2a; color: #4e8; padding: 0.5rem 0.75rem; border-radius: 5px; border: 1px solid #4e8; box-shadow: 0 4px 12px rgba(0,0,0,0.4); font-size: 0.8rem; animation: toast-in 0.3s ease-out; max-width: 280px; }
 .toast.toast-warning { background: #3a3a1a; color: #ea4; border-color: #ea4; }
 .toast.toast-error { background: #3a1a1a; color: #e44; border-color: #e44; }
+.toast-confirm { pointer-events: auto; color: #eee; max-width: 320px; }
+.toast-confirm-message { display: block; margin-bottom: 0.5rem; line-height: 1.35; }
+.toast-actions { display: flex; gap: 0.4rem; justify-content: flex-end; }
+.toast-actions button { padding: 0.3rem 0.65rem; font-size: 0.75rem; min-height: 32px; }
+.toast-action-confirm { background: #4e8; border-color: #4e8; color: #111; font-weight: 600; }
+.toast-action-cancel { background: #222; border-color: #555; color: #ddd; }
 .toast.fade-out { animation: toast-out 0.3s ease-in forwards; }
 @keyframes toast-in { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
 @keyframes toast-out { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(-20px); } }
@@ -330,6 +374,43 @@ button:hover { background: #333; }
 /* Mobile tab bar - hidden on desktop */
 #mobile-tabs { display: none; }
 
+/* Medium-width layout: keep the queue closer to the user's hand */
+@media (max-width: 1180px) {
+  #main-content {
+    max-width: 100%;
+  }
+
+  #channels-panel {
+    flex-basis: 145px;
+  }
+
+  #queue-panel {
+    order: 2;
+    flex-grow: 1.12;
+  }
+
+  #library-panel {
+    order: 3;
+  }
+
+  #player-bar {
+    flex-wrap: wrap;
+  }
+
+  #now-playing {
+    flex: 1 1 180px;
+  }
+
+  #player-controls {
+    flex: 999 1 420px;
+  }
+
+  #volume-controls {
+    flex: 0 1 180px;
+    margin-left: auto;
+  }
+}
+
 /* Mobile responsive styles */
 @media (max-width: 768px) {
   html, body { 
@@ -352,6 +433,7 @@ button:hover { background: #333; }
   #site-header { margin-bottom: 0.3rem; flex-shrink: 0; }
   #site-header h1 { font-size: 0.9rem; }
   #btn-report-bug { font-size: 0.7rem; padding: 0.2rem 0.4rem; }
+  #btn-logout.guest-signin { min-height: 44px; }
   
   #header-row { flex-wrap: wrap; gap: 0.3rem; margin-bottom: 0.3rem; flex-shrink: 0; }
   #auth-section .user-info { flex-wrap: wrap; gap: 0.3rem; }
@@ -374,7 +456,8 @@ button:hover { background: #333; }
     color: #666;
     font-size: 0.8rem;
     font-weight: 600;
-    padding: 0.5rem;
+    min-height: 44px;
+    padding: 0.65rem 0.5rem;
     cursor: pointer;
     border-radius: 4px;
     transition: all 0.2s;
@@ -418,6 +501,9 @@ button:hover { background: #333; }
   #library-panel .panel-tabs {
     flex-shrink: 0;
   }
+  #library-panel .panel-tab {
+    min-height: 44px;
+  }
   #library-panel .panel-views {
     flex: 1;
     min-height: 0;
@@ -443,6 +529,10 @@ button:hover { background: #333; }
     overflow-y: auto;
     width: 100%;
   }
+  #recent-library {
+    max-height: 28vh;
+    min-height: 0;
+  }
   .add-btn {
     flex-shrink: 0;
     width: auto;
@@ -483,6 +573,25 @@ button:hover { background: #333; }
   .track-title { font-size: 0.85rem; }
   
   /* Player bar - stacked layout */
+  .visualizer-shell {
+    height: 74px;
+    min-height: 74px;
+    max-height: 74px;
+    flex: 0 0 74px;
+    margin: 0 0 0.3rem 0;
+    max-width: 100%;
+  }
+  #player-content.visualizer-active #main-content {
+    flex: 1;
+    max-height: none;
+  }
+  #player-content.visualizer-active .visualizer-shell {
+    flex: 0 0 74px;
+    height: 74px;
+    min-height: 74px;
+    max-height: 74px;
+  }
+
   #player-bar { 
     flex-direction: column; 
     gap: 0.4rem; 
@@ -495,6 +604,7 @@ button:hover { background: #333; }
   }
   #now-playing { 
     width: 100%; 
+    flex: 0 0 auto;
     display: flex;
     align-items: center;
     gap: 0.5rem;
@@ -504,8 +614,42 @@ button:hover { background: #333; }
     flex: 1; 
     font-size: 0.85rem;
   }
-  #player-controls { width: 100%; }
+  #player-controls { width: 100%; flex: 0 0 auto; }
-  #progress-row { gap: 0.5rem; }
+  #progress-row {
+    display: grid;
+    grid-template-columns: minmax(42px, auto) 44px 44px 44px minmax(58px, auto);
+    grid-template-areas:
+      "sync prev play next mode"
+      "progress progress progress progress time";
+    gap: 0.25rem 0.35rem;
+    align-items: center;
+  }
+  #btn-sync {
+    grid-area: sync;
+    min-height: 44px;
+    display: flex;
+    align-items: center;
+  }
+  #btn-prev { grid-area: prev; }
+  #status-icon { grid-area: play; }
+  #btn-next { grid-area: next; }
+  #btn-mode {
+    grid-area: mode;
+    min-height: 44px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+  }
+  #progress-container {
+    grid-area: progress;
+    width: 100%;
+    min-width: 0;
+    height: 8px;
+  }
+  #time {
+    grid-area: time;
+    text-align: right;
+  }
   #status-icon { 
     font-size: 1.2rem; 
     width: 44px; 
@@ -528,11 +672,28 @@ button:hover { background: #333; }
     padding: 0.2rem 0.4rem;
   }
   #volume-controls { 
-    justify-content: flex-end;
+    flex: 0 0 auto;
+    justify-content: center;
     gap: 0.3rem;
+    width: 100%;
+    margin-left: 0;
   }
   #btn-stream-only { display: none; }
-  #volume-slider { width: 80px; }
+  #btn-mute {
+    min-width: 44px;
+    min-height: 44px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+  }
+  #volume { width: min(160px, 55vw); height: 44px; }
+  .track-actions .track-menu-btn {
+    opacity: 1;
+    width: 44px;
+    height: 44px;
+    font-size: 1rem;
+    background: #2a2a2a;
+  }
   
   /* Hide history button on mobile */
   #btn-history { display: none; }
@@ -540,12 +701,572 @@ button:hover { background: #333; }
   /* Toast positioning */
   #toast-container { 
     top: auto;
-    bottom: 5rem;
+    bottom: calc(9.25rem + env(safe-area-inset-bottom));
     left: 0.3rem;
     right: 0.3rem;
+    max-width: none;
+    max-height: 30vh;
   }
   .toast { max-width: none; }
   
   /* Login panel */
   #login-panel { padding: 1rem; }
 }
+
+/* Theme selector */
+#stream-select { margin-left: auto; display: flex; gap: 0.4rem; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
+#theme-select { min-width: 170px; }
+#visualizer-select { min-width: 140px; }
+
+/* Shared theme surfaces */
+body[data-ui-theme]:not([data-ui-theme="default"]) #channels-panel,
+body[data-ui-theme]:not([data-ui-theme="default"]) #library-panel,
+body[data-ui-theme]:not([data-ui-theme="default"]) #queue-panel,
+body[data-ui-theme]:not([data-ui-theme="default"]) .visualizer-shell,
+body[data-ui-theme]:not([data-ui-theme="default"]) #player-bar,
+body[data-ui-theme]:not([data-ui-theme="default"]) #login-panel,
+body[data-ui-theme]:not([data-ui-theme="default"]) .panel-views,
+body[data-ui-theme]:not([data-ui-theme="default"]) #playlist-contents-header,
+body[data-ui-theme]:not([data-ui-theme="default"]) .context-menu,
+body[data-ui-theme]:not([data-ui-theme="default"]) #toast-history {
+  background: var(--panel-bg, #1a1a1a);
+  border-color: var(--panel-border, #333);
+  color: var(--text-color, #eee);
+}
+
+body[data-ui-theme]:not([data-ui-theme="default"]) #site-header h1,
+body[data-ui-theme]:not([data-ui-theme="default"]) h3,
+body[data-ui-theme]:not([data-ui-theme="default"]) .panel-tab.active,
+body[data-ui-theme]:not([data-ui-theme="default"]) #selected-playlist-name {
+  color: var(--heading-color, var(--text-color, #eee));
+}
+
+body[data-ui-theme]:not([data-ui-theme="default"]) button,
+body[data-ui-theme]:not([data-ui-theme="default"]) select,
+body[data-ui-theme]:not([data-ui-theme="default"]) input,
+body[data-ui-theme]:not([data-ui-theme="default"]) .panel-tab,
+body[data-ui-theme]:not([data-ui-theme="default"]) .track-actions .track-menu-btn,
+body[data-ui-theme]:not([data-ui-theme="default"]) .track-actions .track-play-btn,
+body[data-ui-theme]:not([data-ui-theme="default"]) .track-actions .track-preview-btn {
+  background: var(--control-bg, #222);
+  border-color: var(--control-border, #444);
+  color: var(--control-color, var(--text-color, #eee));
+}
+
+body[data-ui-theme]:not([data-ui-theme="default"]) .visualizer-fullscreen-btn {
+  background: rgba(0,0,0,0.48);
+  border-color: rgba(255,255,255,0.28);
+  color: #fff;
+}
+
+body[data-ui-theme]:not([data-ui-theme="default"]) .track:hover,
+body[data-ui-theme]:not([data-ui-theme="default"]) .playlist-item:hover,
+body[data-ui-theme]:not([data-ui-theme="default"]) .context-menu-item:hover {
+  background: var(--hover-bg, #222);
+}
+
+body[data-ui-theme]:not([data-ui-theme="default"]) #queue .track.active,
+body[data-ui-theme]:not([data-ui-theme="default"]) .playlist-item.selected,
+body[data-ui-theme]:not([data-ui-theme="default"]) .mobile-tab.active,
+body[data-ui-theme]:not([data-ui-theme="default"]) .now-playing-bar,
+body[data-ui-theme]:not([data-ui-theme="default"]) .toast {
+  background: var(--active-bg, #2a4a3a);
+  border-color: var(--accent, #4e8);
+  color: var(--active-color, var(--accent, #4e8));
+}
+
+body[data-ui-theme]:not([data-ui-theme="default"]) .track.cached .cache-indicator,
+body[data-ui-theme]:not([data-ui-theme="default"]) #progress-bar.playing.synced,
+body[data-ui-theme]:not([data-ui-theme="default"]) #buffer-bar .segment.available,
+body[data-ui-theme]:not([data-ui-theme="default"]) #sync-indicator.visible {
+  background: var(--accent, #4e8);
+}
+
+body[data-ui-theme]:not([data-ui-theme="default"]) .track.not-cached .cache-indicator,
+body[data-ui-theme]:not([data-ui-theme="default"]) #btn-sync.synced,
+body[data-ui-theme]:not([data-ui-theme="default"]) .toast.toast-warning {
+  color: var(--warning, #ea4);
+}
+
+body[data-ui-theme="phosphor"] {
+  --panel-bg: #07140f;
+  --panel-border: #1f7a48;
+  --text-color: #caf7d9;
+  --heading-color: #73ff9c;
+  --control-bg: #0b1f17;
+  --control-border: #24965a;
+  --control-color: #dfffe8;
+  --hover-bg: #123321;
+  --active-bg: #123d29;
+  --active-color: #8cffad;
+  --accent: #51f080;
+  --warning: #f5de72;
+  --visualizer-bg: rgba(3, 13, 8, 0.95);
+  --visualizer-accent: #51f080;
+  --visualizer-secondary: #f5de72;
+  --visualizer-muted: rgba(81, 240, 128, 0.18);
+  background: #020806;
+  color: var(--text-color);
+}
+
+body[data-ui-theme="phosphor"] #app { filter: drop-shadow(0 0 8px rgba(81, 240, 128, 0.12)); }
+body[data-ui-theme="phosphor"] #track-name,
+body[data-ui-theme="phosphor"] #btn-sync.synced.connected { text-shadow: 0 0 10px rgba(81, 240, 128, 0.55); }
+
+body[data-ui-theme="vaporwave"] {
+  --panel-bg: #21123a;
+  --panel-border: #ff71ce;
+  --text-color: #f8d7ff;
+  --heading-color: #05ffa1;
+  --control-bg: #351a54;
+  --control-border: #b967ff;
+  --control-color: #ffffff;
+  --hover-bg: #46206d;
+  --active-bg: #2d567a;
+  --active-color: #05ffa1;
+  --accent: #01cdfe;
+  --warning: #fffb96;
+  --visualizer-bg: rgba(25, 9, 45, 0.92);
+  --visualizer-accent: #01cdfe;
+  --visualizer-secondary: #ff71ce;
+  --visualizer-muted: rgba(255, 113, 206, 0.22);
+  background: linear-gradient(135deg, #12091f 0%, #2f1856 46%, #0b4857 100%);
+  color: var(--text-color);
+}
+
+body[data-ui-theme="vaporwave"] #main-content { gap: 0.8rem; }
+body[data-ui-theme="vaporwave"] #channels-panel,
+body[data-ui-theme="vaporwave"] #library-panel,
+body[data-ui-theme="vaporwave"] #queue-panel,
+body[data-ui-theme="vaporwave"] #player-bar { box-shadow: 0 0 22px rgba(1, 205, 254, 0.2), inset 0 0 0 1px rgba(255, 113, 206, 0.22); }
+
+body[data-ui-theme="sunrise"] {
+  --panel-bg: #241b2d;
+  --panel-border: #f18f01;
+  --text-color: #fff0d4;
+  --heading-color: #ffcf56;
+  --control-bg: #3a2340;
+  --control-border: #f45d48;
+  --control-color: #fff7e8;
+  --hover-bg: #50314f;
+  --active-bg: #5f342e;
+  --active-color: #ffd166;
+  --accent: #ff9f1c;
+  --warning: #2ec4b6;
+  --visualizer-bg: rgba(36, 20, 43, 0.92);
+  --visualizer-accent: #ff9f1c;
+  --visualizer-secondary: #2ec4b6;
+  --visualizer-muted: rgba(255, 207, 86, 0.18);
+  background: radial-gradient(circle at 20% 0%, #7a2f5c 0, #2b1838 45%, #101018 100%);
+  color: var(--text-color);
+}
+
+body[data-ui-theme="paper"] {
+  --panel-bg: #f4efe3;
+  --panel-border: #3b3327;
+  --text-color: #1d1a17;
+  --heading-color: #0b0b0b;
+  --control-bg: #fffaf0;
+  --control-border: #5a4a36;
+  --control-color: #1d1a17;
+  --hover-bg: #e5d8bd;
+  --active-bg: #d9c69f;
+  --active-color: #1d1a17;
+  --accent: #285f47;
+  --warning: #a75a00;
+  --visualizer-bg: rgba(255, 250, 240, 0.95);
+  --visualizer-accent: #285f47;
+  --visualizer-secondary: #a75a00;
+  --visualizer-muted: rgba(29, 26, 23, 0.16);
+  background: #d7c9aa;
+  color: var(--text-color);
+}
+
+body[data-ui-theme="paper"] #channels-panel,
+body[data-ui-theme="paper"] #library-panel,
+body[data-ui-theme="paper"] #queue-panel,
+body[data-ui-theme="paper"] #player-bar {
+  border: 1px solid var(--panel-border);
+  box-shadow: 4px 4px 0 #3b3327;
+}
+
+body[data-ui-theme="contrast"] {
+  --panel-bg: #000;
+  --panel-border: #fff;
+  --text-color: #fff;
+  --heading-color: #ffff00;
+  --control-bg: #000;
+  --control-border: #fff;
+  --control-color: #fff;
+  --hover-bg: #202020;
+  --active-bg: #ffff00;
+  --active-color: #000;
+  --accent: #00ffff;
+  --warning: #ff00ff;
+  --visualizer-bg: #000000;
+  --visualizer-accent: #00ffff;
+  --visualizer-secondary: #ffff00;
+  --visualizer-muted: rgba(255, 255, 255, 0.32);
+  background: #000;
+  color: #fff;
+}
+
+body[data-ui-theme="contrast"] #channels-panel,
+body[data-ui-theme="contrast"] #library-panel,
+body[data-ui-theme="contrast"] #queue-panel,
+body[data-ui-theme="contrast"] #player-bar { border: 2px solid #fff; border-radius: 0; }
+
+body[data-ui-theme="aquarium"] {
+  --panel-bg: rgba(8, 42, 58, 0.86);
+  --panel-border: #52e0c4;
+  --text-color: #d7fff8;
+  --heading-color: #a3fff1;
+  --control-bg: #10394d;
+  --control-border: #59bde0;
+  --control-color: #ebfffb;
+  --hover-bg: #174d62;
+  --active-bg: #0d5f65;
+  --active-color: #adfff0;
+  --accent: #52e0c4;
+  --warning: #ffd166;
+  --visualizer-bg: rgba(5, 35, 49, 0.82);
+  --visualizer-accent: #52e0c4;
+  --visualizer-secondary: #59bde0;
+  --visualizer-muted: rgba(163, 255, 241, 0.18);
+  background: linear-gradient(180deg, #062c45, #03161d);
+  color: var(--text-color);
+}
+
+body[data-ui-theme="aquarium"] #app { backdrop-filter: blur(2px); }
+body[data-ui-theme="aquarium"] #channels-panel,
+body[data-ui-theme="aquarium"] #library-panel,
+body[data-ui-theme="aquarium"] #queue-panel,
+body[data-ui-theme="aquarium"] #player-bar { border: 1px solid rgba(163, 255, 241, 0.42); }
+
+body[data-ui-theme="amber"] {
+  --panel-bg: #1b1204;
+  --panel-border: #8c5d13;
+  --text-color: #ffd98a;
+  --heading-color: #ffb000;
+  --control-bg: #2a1b06;
+  --control-border: #b97919;
+  --control-color: #ffe8ad;
+  --hover-bg: #3a2508;
+  --active-bg: #4c3109;
+  --active-color: #ffc857;
+  --accent: #ffb000;
+  --warning: #f77f00;
+  --visualizer-bg: rgba(18, 12, 3, 0.94);
+  --visualizer-accent: #ffb000;
+  --visualizer-secondary: #f77f00;
+  --visualizer-muted: rgba(255, 176, 0, 0.2);
+  background: #080502;
+  color: var(--text-color);
+  font-family: "Cascadia Mono", "Consolas", monospace;
+}
+
+body[data-ui-theme="amber"] * { letter-spacing: 0; }
+body[data-ui-theme="amber"] #track-name { text-transform: uppercase; }
+
+body[data-ui-theme="compact"] {
+  --panel-bg: #15181b;
+  --panel-border: #35414a;
+  --text-color: #e6edf3;
+  --heading-color: #9fc7ff;
+  --control-bg: #20262c;
+  --control-border: #3e4d58;
+  --control-color: #edf4fb;
+  --hover-bg: #242c33;
+  --active-bg: #22364b;
+  --active-color: #9fc7ff;
+  --accent: #79c0ff;
+  --warning: #e3b341;
+  --visualizer-bg: rgba(13, 17, 23, 0.94);
+  --visualizer-accent: #79c0ff;
+  --visualizer-secondary: #e3b341;
+  --visualizer-muted: rgba(121, 192, 255, 0.18);
+  background: #0d1117;
+  color: var(--text-color);
+}
+
+body[data-ui-theme="compact"] #app { max-width: 1200px; padding: 0.25rem; }
+body[data-ui-theme="compact"] #main-content { gap: 0.25rem; }
+body[data-ui-theme="compact"] #channels-panel { flex-basis: 130px; }
+body[data-ui-theme="compact"] #library-panel,
+body[data-ui-theme="compact"] #queue-panel { padding: 0.25rem; max-height: 66vh; }
+body[data-ui-theme="compact"] #library .track,
+body[data-ui-theme="compact"] #queue .track,
+body[data-ui-theme="compact"] #recent-library .track,
+body[data-ui-theme="compact"] #playlist-tracks .track { padding: 0.16rem 0.35rem; font-size: 0.78rem; }
+body[data-ui-theme="compact"] #player-bar { padding: 0.35rem 0.5rem; }
+
+body[data-ui-theme="cinema"] {
+  --panel-bg: #101010;
+  --panel-border: #41362a;
+  --text-color: #e8dfcc;
+  --heading-color: #f6c65b;
+  --control-bg: #1f1a15;
+  --control-border: #6d5735;
+  --control-color: #f3ead7;
+  --hover-bg: #292118;
+  --active-bg: #3d2b18;
+  --active-color: #f6c65b;
+  --accent: #f6c65b;
+  --warning: #db5461;
+  --visualizer-bg: rgba(5, 5, 5, 0.95);
+  --visualizer-accent: #f6c65b;
+  --visualizer-secondary: #db5461;
+  --visualizer-muted: rgba(246, 198, 91, 0.18);
+  background: #050505;
+  color: var(--text-color);
+}
+
+body[data-ui-theme="cinema"] #main-content { display: grid; grid-template-columns: 150px minmax(280px, 0.8fr) minmax(420px, 1.45fr); }
+body[data-ui-theme="cinema"] #queue-panel { order: 2; max-height: 70vh; }
+body[data-ui-theme="cinema"] #queue .track.active { font-size: 1rem; padding: 0.65rem 0.75rem; }
+body[data-ui-theme="cinema"] #player-bar { border-top: 4px solid var(--accent); }
+
+body[data-ui-theme="hotdog"] {
+  --panel-bg: #ffff00;
+  --panel-border: #000000;
+  --text-color: #000000;
+  --heading-color: #ffff00;
+  --control-bg: #ffffff;
+  --control-border: #000000;
+  --control-color: #000000;
+  --hover-bg: #ff0000;
+  --active-bg: #ff0000;
+  --active-color: #ffffff;
+  --accent: #ff0000;
+  --warning: #000000;
+  --visualizer-bg: #ffff00;
+  --visualizer-accent: #ff0000;
+  --visualizer-secondary: #000000;
+  --visualizer-muted: rgba(0, 0, 0, 0.22);
+  background: #ff0000;
+  color: #000000;
+  font-family: "MS Sans Serif", "Arial", sans-serif;
+}
+
+body[data-ui-theme="hotdog"] #site-header h1,
+body[data-ui-theme="hotdog"] h3,
+body[data-ui-theme="hotdog"] .panel-tab.active {
+  background: #ff0000;
+  color: #ffff00;
+  padding: 0.1rem 0.25rem;
+}
+
+body[data-ui-theme="hotdog"] #channels-panel,
+body[data-ui-theme="hotdog"] #library-panel,
+body[data-ui-theme="hotdog"] #queue-panel,
+body[data-ui-theme="hotdog"] .visualizer-shell,
+body[data-ui-theme="hotdog"] #player-bar,
+body[data-ui-theme="hotdog"] #login-panel,
+body[data-ui-theme="hotdog"] .panel-views,
+body[data-ui-theme="hotdog"] #toast-history,
+body[data-ui-theme="hotdog"] .context-menu {
+  border: 3px solid #000000;
+  border-radius: 0;
+  box-shadow: 5px 5px 0 #000000;
+}
+
+body[data-ui-theme="hotdog"] button,
+body[data-ui-theme="hotdog"] select,
+body[data-ui-theme="hotdog"] input,
+body[data-ui-theme="hotdog"] .panel-tab,
+body[data-ui-theme="hotdog"] .track-actions .track-menu-btn,
+body[data-ui-theme="hotdog"] .track-actions .track-play-btn,
+body[data-ui-theme="hotdog"] .track-actions .track-preview-btn {
+  border: 2px outset #ffffff;
+  border-radius: 0;
+  font-weight: 700;
+}
+
+body[data-ui-theme="hotdog"] button:active,
+body[data-ui-theme="hotdog"] .panel-tab.active {
+  border-style: inset;
+}
+
+body[data-ui-theme="hotdog"] .panel-tab,
+body[data-ui-theme="hotdog"] .track,
+body[data-ui-theme="hotdog"] .playlist-item,
+body[data-ui-theme="hotdog"] .context-menu-item,
+body[data-ui-theme="hotdog"] .channel-item {
+  border-radius: 0;
+}
+
+body[data-ui-theme="hotdog"] .track:hover,
+body[data-ui-theme="hotdog"] .context-menu-item:hover,
+body[data-ui-theme="hotdog"] .playlist-item:hover {
+  color: #ffff00;
+}
+
+body[data-ui-theme="hotdog"] #queue .track.active,
+body[data-ui-theme="hotdog"] .now-playing-bar,
+body[data-ui-theme="hotdog"] .mobile-tab.active,
+body[data-ui-theme="hotdog"] .toast {
+  border: 2px solid #000000;
+  text-transform: uppercase;
+}
+
+body[data-ui-theme="hotdog"] #progress-container,
+body[data-ui-theme="hotdog"] #buffer-bar .segment {
+  background: #ffffff;
+  border: 1px solid #000000;
+  border-radius: 0;
+}
+
+body[data-ui-theme="hotdog"] #progress-bar.playing.synced,
+body[data-ui-theme="hotdog"] #buffer-bar .segment.available,
+body[data-ui-theme="hotdog"] .track.cached .cache-indicator {
+  background: #ff0000;
+}
+
+body[data-ui-theme="hotdog"] .visualizer-shell {
+  background: #ffff00;
+}
+
+html[data-ui-theme="spreadsheet"],
+html[data-ui-theme="myspace"],
+html[data-ui-theme="sideways"] {
+  max-width: none;
+  overflow-x: auto;
+  overscroll-behavior-x: auto;
+}
+
+html[data-ui-theme="spreadsheet"] { min-width: 2100px; }
+html[data-ui-theme="myspace"] { min-width: 1850px; }
+html[data-ui-theme="sideways"] { min-width: 2600px; }
+
+body[data-ui-theme="spreadsheet"],
+body[data-ui-theme="myspace"],
+body[data-ui-theme="sideways"] {
+  max-width: none;
+  overflow-x: auto;
+}
+
+body[data-ui-theme="spreadsheet"] {
+  --panel-bg: #ffffff;
+  --panel-border: #8b8b8b;
+  --text-color: #000000;
+  --heading-color: #008000;
+  --control-bg: #efefef;
+  --control-border: #777777;
+  --control-color: #000000;
+  --hover-bg: #ffffcc;
+  --active-bg: #00ff00;
+  --active-color: #000000;
+  --accent: #0000ff;
+  --warning: #ff0000;
+  --visualizer-bg: #ffffff;
+  --visualizer-accent: #0000ff;
+  --visualizer-secondary: #ff0000;
+  --visualizer-muted: rgba(0, 0, 0, 0.18);
+  background: #fff;
+  color: #000;
+  font-family: "Times New Roman", serif;
+}
+
+body[data-ui-theme="spreadsheet"] #app { width: 2100px; max-width: none; overflow-x: visible; }
+body[data-ui-theme="spreadsheet"] #main-content { width: 2050px; max-width: none; overflow-x: visible; gap: 0; }
+body[data-ui-theme="spreadsheet"] .visualizer-shell { width: 2050px; max-width: none; }
+body[data-ui-theme="spreadsheet"] #channels-panel,
+body[data-ui-theme="spreadsheet"] #library-panel,
+body[data-ui-theme="spreadsheet"] #queue-panel,
+body[data-ui-theme="spreadsheet"] #player-bar {
+  border: 1px solid #000;
+  border-radius: 0;
+  box-shadow: none;
+}
+body[data-ui-theme="spreadsheet"] .track { border-bottom: 1px solid #999; border-radius: 0; }
+body[data-ui-theme="spreadsheet"] #library,
+body[data-ui-theme="spreadsheet"] #recent-library,
+body[data-ui-theme="spreadsheet"] #queue { overflow-x: scroll; }
+
+body[data-ui-theme="myspace"] {
+  --panel-bg: #220044;
+  --panel-border: #00ff66;
+  --text-color: #ffff00;
+  --heading-color: #ff00ff;
+  --control-bg: #0000cc;
+  --control-border: #ffff00;
+  --control-color: #ffffff;
+  --hover-bg: #ff00ff;
+  --active-bg: #00ffff;
+  --active-color: #000000;
+  --accent: #00ff66;
+  --warning: #ff6600;
+  --visualizer-bg: rgba(34, 0, 68, 0.92);
+  --visualizer-accent: #00ff66;
+  --visualizer-secondary: #ff00ff;
+  --visualizer-muted: rgba(255, 255, 0, 0.22);
+  background: repeating-linear-gradient(45deg, #ff00ff 0 18px, #00ffff 18px 36px, #ffff00 36px 54px);
+  color: var(--text-color);
+  font-family: Impact, "Arial Black", sans-serif;
+}
+
+body[data-ui-theme="myspace"] #app { width: 1850px; max-width: none; overflow-x: visible; transform: rotate(-0.35deg); }
+body[data-ui-theme="myspace"] #main-content { width: 1780px; max-width: none; overflow-x: visible; gap: 1.25rem; }
+body[data-ui-theme="myspace"] .visualizer-shell { width: 1780px; max-width: none; }
+body[data-ui-theme="myspace"] #channels-panel,
+body[data-ui-theme="myspace"] #library-panel,
+body[data-ui-theme="myspace"] #queue-panel,
+body[data-ui-theme="myspace"] #player-bar {
+  border: 6px ridge #00ff66;
+  border-radius: 22px;
+  box-shadow: 12px 12px 0 #ff00ff, -9px -7px 0 #00ffff;
+}
+body[data-ui-theme="myspace"] .track:nth-child(odd) { transform: rotate(0.45deg); }
+body[data-ui-theme="myspace"] .track:nth-child(even) { transform: rotate(-0.45deg); }
+body[data-ui-theme="myspace"] #track-name { font-size: 1.25rem; color: #00ff66; text-shadow: 2px 2px #ff00ff; }
+
+body[data-ui-theme="sideways"] {
+  --panel-bg: #241313;
+  --panel-border: #cc3333;
+  --text-color: #f8dcdc;
+  --heading-color: #ff6b35;
+  --control-bg: #351b1b;
+  --control-border: #8c2f39;
+  --control-color: #fff1f1;
+  --hover-bg: #482121;
+  --active-bg: #5a231f;
+  --active-color: #ffb199;
+  --accent: #ff6b35;
+  --warning: #ffd166;
+  --visualizer-bg: rgba(25, 11, 11, 0.94);
+  --visualizer-accent: #ff6b35;
+  --visualizer-secondary: #ffd166;
+  --visualizer-muted: rgba(248, 220, 220, 0.16);
+  background: #190b0b;
+  color: var(--text-color);
+}
+
+body[data-ui-theme="sideways"] #app { width: 2600px; max-width: none; overflow-x: visible; }
+body[data-ui-theme="sideways"] .visualizer-shell { width: 2480px; max-width: none; }
+body[data-ui-theme="sideways"] #main-content {
+  width: 2480px;
+  max-width: none;
+  display: grid;
+  grid-template-columns: 260px 1060px 1060px;
+  overflow-x: visible;
+}
+body[data-ui-theme="sideways"] #channels-panel,
+body[data-ui-theme="sideways"] #library-panel,
+body[data-ui-theme="sideways"] #queue-panel { max-height: 42vh; }
+body[data-ui-theme="sideways"] #player-bar { width: 2480px; max-width: none; }
+
+@media (max-width: 768px) {
+  #stream-select { width: 100%; margin-left: 0; justify-content: stretch; }
+  #theme-select,
+  #visualizer-select { flex: 1 1 150px; min-height: 44px; min-width: 0; }
+
+  body[data-ui-theme="compact"] #app,
+  body[data-ui-theme="cinema"] #app {
+    max-width: 100%;
+  }
+
+  body[data-ui-theme="cinema"] #main-content {
+    display: flex;
+    grid-template-columns: none;
+  }
+}

public/themes.js

@@ -0,0 +1,91 @@
+// MusicRoom - UI theme and layout experiments
+
+(function() {
+  const M = window.MusicRoom;
+
+  const THEMES = new Set([
+    "default",
+    "phosphor",
+    "vaporwave",
+    "sunrise",
+    "paper",
+    "contrast",
+    "aquarium",
+    "amber",
+    "compact",
+    "cinema",
+    "hotdog",
+    "spreadsheet",
+    "myspace",
+    "sideways"
+  ]);
+
+  function decodeCookieValue(value) {
+    if (!value) return null;
+    try {
+      return decodeURIComponent(value);
+    } catch {
+      M.clearCookieValue(M.THEME_STORAGE_KEY);
+      return null;
+    }
+  }
+
+  function normalizeTheme(theme) {
+    return THEMES.has(theme) ? theme : "default";
+  }
+
+  M.getSavedTheme = function() {
+    const cookieTheme = normalizeTheme(decodeCookieValue(M.getCookieValue(M.THEME_STORAGE_KEY)));
+    if (cookieTheme !== "default") return cookieTheme;
+
+    try {
+      const storedTheme = normalizeTheme(localStorage.getItem(M.THEME_STORAGE_KEY));
+      if (storedTheme !== "default") {
+        M.rememberTheme(storedTheme);
+        return storedTheme;
+      }
+    } catch {}
+
+    return "default";
+  };
+
+  M.rememberTheme = function(theme) {
+    const normalized = normalizeTheme(theme);
+    if (normalized === "default") {
+      M.clearThemePreference();
+      return;
+    }
+
+    M.setCookieValue(M.THEME_STORAGE_KEY, normalized);
+    try {
+      localStorage.setItem(M.THEME_STORAGE_KEY, normalized);
+    } catch {}
+  };
+
+  M.clearThemePreference = function() {
+    M.clearCookieValue(M.THEME_STORAGE_KEY);
+    try {
+      localStorage.removeItem(M.THEME_STORAGE_KEY);
+    } catch {}
+  };
+
+  M.applyTheme = function(theme, remember = true) {
+    const normalized = normalizeTheme(theme);
+    document.documentElement.dataset.uiTheme = normalized;
+    document.body.dataset.uiTheme = normalized;
+
+    const selector = document.getElementById("theme-select");
+    if (selector) selector.value = normalized;
+
+    if (remember) M.rememberTheme(normalized);
+  };
+
+  document.addEventListener("DOMContentLoaded", () => {
+    const selector = document.getElementById("theme-select");
+    M.applyTheme(M.getSavedTheme(), false);
+
+    if (selector) {
+      selector.onchange = () => M.applyTheme(selector.value);
+    }
+  });
+})();

public/trackComponent.js

@@ -59,6 +59,7 @@
       <span class="track-title">${escapeHtml(title)}</span>
       <span class="track-actions">
         <span class="duration">${M.fmt(track.duration)}</span>
+        <button type="button" class="track-menu-btn" title="Track actions" aria-label="Track actions"></button>
       </span>
     `;
 

public/trackContainer.js

@@ -29,6 +29,39 @@
 
   // Active context menu
   let activeContextMenu = null;
+  const TRACK_DRAG_TYPE = "application/x-blastoise-tracks";
+
+  function getDataTransferTypes(e) {
+    return [...(e.dataTransfer?.types || [])];
+  }
+
+  function hasTrackDrag(e, allowedSources = null) {
+    if (dragSource) return !allowedSources || allowedSources.includes(dragSource);
+    return getDataTransferTypes(e).includes(TRACK_DRAG_TYPE);
+  }
+
+  function restoreDragState(e) {
+    if (dragSource && draggedTrackIds.length > 0) return true;
+
+    const raw = e.dataTransfer?.getData(TRACK_DRAG_TYPE);
+    if (!raw) return false;
+
+    try {
+      const payload = JSON.parse(raw);
+      if (!["queue", "library", "playlist"].includes(payload.source)) return false;
+      const trackIds = Array.isArray(payload.trackIds) ? payload.trackIds.filter(Boolean) : [];
+      if (trackIds.length === 0) return false;
+
+      dragSource = payload.source;
+      draggedTrackIds = trackIds;
+      draggedIndices = Array.isArray(payload.indices)
+        ? payload.indices.filter(i => Number.isInteger(i))
+        : [];
+      return true;
+    } catch {
+      return false;
+    }
+  }
 
   /**
    * Create a track container manager
@@ -41,6 +74,7 @@
    * @param {boolean} [config.canReorder] - Whether tracks can be reordered (queue only)
    * @param {boolean} [config.isPlaylistOwner] - Whether user owns the playlist (can remove/reorder)
    * @param {string} [config.playlistId] - Playlist ID (for playlist type)
+   * @param {string} [config.emptyMessage] - Message when the container has no tracks
    * @param {Function} [config.onRender] - Callback after render
    */
   function createContainer(config) {
@@ -52,6 +86,7 @@
       canReorder = false,
       isPlaylistOwner = false,
       playlistId = null,
+      emptyMessage = null,
       onRender
     } = config;
 
@@ -85,9 +120,9 @@
       }
       
       if (currentTracks.length === 0) {
-        const emptyMsg = type === 'queue' ? 'Queue empty - drag tracks here' 
+        const emptyMsg = emptyMessage || (type === 'queue' ? 'Queue empty - drag tracks here'
           : type === 'library' ? 'No tracks'
-          : 'No tracks - drag here to add';
+          : 'No tracks - drag here to add');
         element.innerHTML = `<div class="empty">${emptyMsg}</div>`;
         if (onRender) onRender();
         return;
@@ -131,7 +166,7 @@
 
     function wirePlaylistContainerDrop(container) {
       container.ondragover = (e) => {
-        if (dragSource === 'queue' || dragSource === 'library' || dragSource === 'playlist') {
+        if (hasTrackDrag(e, ['queue', 'library', 'playlist'])) {
           e.preventDefault();
           e.dataTransfer.dropEffect = dragSource === 'playlist' ? "move" : "copy";
           container.classList.add("drop-target");
@@ -151,6 +186,7 @@
           el.classList.remove("drop-above", "drop-below");
         });
         
+        restoreDragState(e);
         if (draggedTrackIds.length > 0) {
           e.preventDefault();
           
@@ -287,6 +323,19 @@
         showContextMenu(e, track, originalIndex, canEditQueue);
       };
 
+      const menuBtn = div.querySelector(".track-menu-btn");
+      if (menuBtn) {
+        menuBtn.onclick = (e) => {
+          e.stopPropagation();
+          const rect = menuBtn.getBoundingClientRect();
+          showContextMenu({
+            preventDefault() {},
+            clientX: Math.min(rect.right, window.innerWidth - 8),
+            clientY: Math.min(rect.bottom, window.innerHeight - 8)
+          }, track, originalIndex, canEditQueue);
+        };
+      }
+
       // Drag start/end handlers - library/playlist always (read access), queue needs edit permission
       const canDrag = type === 'library' || type === 'playlist' || (type === 'queue' && canEditQueue);
       if (canDrag) {
@@ -376,6 +425,11 @@
       div.classList.add("dragging");
       // Use "copyMove" to allow both copy and move operations
       e.dataTransfer.effectAllowed = "copyMove";
+      e.dataTransfer.setData(TRACK_DRAG_TYPE, JSON.stringify({
+        source: type,
+        trackIds: draggedTrackIds,
+        indices: draggedIndices
+      }));
       e.dataTransfer.setData("text/plain", `${type}:${draggedTrackIds.join(",")}`);
     }
 
@@ -399,6 +453,7 @@
     }
 
     function handleDragOver(e, div, index) {
+      if (!hasTrackDrag(e, ['queue', 'library', 'playlist'])) return;
       e.preventDefault();
       
       // Set drop effect based on source
@@ -429,6 +484,7 @@
     }
 
     function handleDrop(e, div, index) {
+      restoreDragState(e);
       console.log(`[Drag] handleDrop: type=${type} index=${index} dropTargetIndex=${dropTargetIndex} dragSource=${dragSource} draggedIndices=${draggedIndices}`);
       e.preventDefault();
       e.stopPropagation();
@@ -474,7 +530,7 @@
 
     function wireQueueContainerDrop(container) {
       container.ondragover = (e) => {
-        if (dragSource === 'library' || dragSource === 'playlist') {
+        if (hasTrackDrag(e, ['library', 'playlist'])) {
           e.preventDefault();
           e.dataTransfer.dropEffect = "copy";
           if (M.queue.length === 0) {
@@ -491,6 +547,7 @@
 
       container.ondrop = (e) => {
         container.classList.remove("drop-target");
+        restoreDragState(e);
         if ((dragSource === 'library' || dragSource === 'playlist') && draggedTrackIds.length > 0) {
           e.preventDefault();
           const targetIndex = dropTargetIndex !== null ? dropTargetIndex : M.queue.length;
@@ -545,6 +602,11 @@
       if (type === 'queue') {
         // Jump to track in queue
         if (M.synced && M.currentChannelId) {
+          if (!M.canControl()) {
+            M.flashPermissionDenied();
+            M.showToast("Sign in to control playback", "warning", 2500);
+            return;
+          }
           const res = await fetch("/api/channels/" + M.currentChannelId + "/jump", {
             method: "POST",
             headers: { "Content-Type": "application/json" },
@@ -617,7 +679,7 @@
       const menuItems = [];
 
       // Play (queue only, single track or single selection)
-      if (type === 'queue' && selectedCount === 1) {
+      if (type === 'queue' && selectedCount === 1 && (canEditQueue || !M.synced)) {
         menuItems.push({
           label: "▶ Play",
           action: () => playTrack(track, index)
@@ -701,7 +763,7 @@
       }
 
       // Add to Playlist
-      if (M.playlists && !M.currentUser?.is_guest) {
+      if (M.playlists && !M.currentUser?.isGuest) {
         const submenu = M.playlists.showAddToPlaylistMenu(idsForAction);
         if (submenu && submenu.length > 0) {
           menuItems.push({
@@ -870,10 +932,10 @@
     // Adjust if off-screen
     const rect = menu.getBoundingClientRect();
     if (rect.right > window.innerWidth) {
-      menu.style.left = (window.innerWidth - rect.width - 5) + "px";
+      menu.style.left = Math.max(5, window.innerWidth - rect.width - 5) + "px";
     }
     if (rect.bottom > window.innerHeight) {
-      menu.style.top = (window.innerHeight - rect.height - 5) + "px";
+      menu.style.top = Math.max(5, window.innerHeight - rect.height - 5) + "px";
     }
     
     activeContextMenu = menu;

public/ui.js

@@ -14,8 +14,9 @@
   // Update general UI state
   M.updateUI = function() {
     const isConnecting = M.wantSync && !M.synced;
+    const playbackBlocked = M.synced && M.playbackBlocked && !M.serverPaused;
     // While connecting, treat as not playing (paused state)
-    const isPlaying = M.synced ? !M.serverPaused : (!isConnecting && !M.audio.paused);
+    const isPlaying = M.synced ? (!M.serverPaused && !M.audio.paused && !playbackBlocked) : (!isConnecting && !M.audio.paused);
     M.$("#btn-sync").classList.toggle("synced", M.wantSync);
     M.$("#btn-sync").classList.toggle("connected", M.synced);
     M.$("#btn-sync").title = M.wantSync ? "Unsync" : "Sync";
@@ -25,11 +26,22 @@
     M.$("#progress-bar").classList.toggle("local", !M.synced);
     M.$("#progress-bar").classList.toggle("muted", M.audio.volume === 0);
     M.$("#btn-mute").textContent = M.audio.volume === 0 ? "🔇" : "🔊";
-    M.$("#status-icon").textContent = isPlaying ? "⏸" : "▶";
+    const statusIcon = M.$("#status-icon");
+    statusIcon.textContent = isPlaying ? "⏸" : "▶";
+    statusIcon.classList.toggle("playback-blocked", playbackBlocked);
+    statusIcon.title = playbackBlocked ? "Resume this channel" : (isPlaying ? "Pause" : "Play");
     
     // Show/hide controls based on permissions
     const hasControl = M.canControl();
-    M.$("#status-icon").style.cursor = hasControl || !M.synced ? "pointer" : "default";
+    const controlsDisabled = M.synced && !hasControl;
+    ["#status-icon", "#btn-prev", "#btn-next", "#btn-mode", "#progress-container"].forEach(sel => {
+      const el = M.$(sel);
+      if (!el) return;
+      const disabled = controlsDisabled && !(sel === "#status-icon" && playbackBlocked);
+      el.classList.toggle("control-disabled", disabled);
+      if ("ariaDisabled" in el) el.ariaDisabled = disabled ? "true" : "false";
+    });
+    statusIcon.style.cursor = controlsDisabled && !playbackBlocked ? "not-allowed" : "pointer";
   };
   
   // Update auth-related UI
@@ -49,6 +61,7 @@
       M.$("#admin-badge").style.display = M.currentUser.isAdmin ? "inline" : "none";
       // Re-render channel list to update rename/delete buttons
       if (M.renderChannelList) M.renderChannelList();
+      if (M.updatePermissionUI) M.updatePermissionUI();
     } else {
       M.$("#login-panel").classList.remove("hidden");
       M.$("#player-content").classList.remove("visible");
@@ -68,6 +81,7 @@
       } else {
         M.$("#guest-section").classList.add("hidden");
       }
+      if (M.updatePermissionUI) M.updatePermissionUI();
     }
     M.updateUI();
   };
@@ -177,7 +191,7 @@
     };
     
     // Restore last active tab
-    const savedTab = localStorage.getItem("blastoise_mobile_tab") || "channels-panel";
+    const savedTab = localStorage.getItem("blastoise_mobile_tab") || "queue-panel";
     
     function setActiveTab(panelId) {
       tabs.forEach(t => t.classList.toggle("active", t.dataset.panel === panelId));

public/upload.js

@@ -106,11 +106,7 @@
             const data = await res.json();
             
             if (data.type === "playlist") {
-              // Ask user to confirm playlist download
+              const queuePlaylist = async () => {
-              const confirmed = confirm(`Download playlist "${data.title}" with ${data.count} items?\n\nItems will be downloaded slowly (one every ~3 minutes) to avoid overloading the server.\n\nA playlist will be created automatically.`);
-              
-              if (confirmed) {
-                // Confirm playlist download with title for auto-playlist creation
                 const confirmRes = await fetch("/api/fetch/confirm", {
                   method: "POST",
                   headers: { "Content-Type": "application/json" },
@@ -128,7 +124,13 @@
                   const err = await confirmRes.json().catch(() => ({}));
                   M.showToast(err.error || "Failed to queue playlist", "error");
                 }
-              }
+              };
+
+              M.showConfirmToast(
+                `Download playlist "${data.title}" with ${data.count} items? Items download slowly and a playlist will be created automatically.`,
+                queuePlaylist,
+                { confirmText: "Download", duration: 20000 }
+              );
             } else if (data.type === "single") {
               M.showToast(`Queued: ${data.title}`);
               // Task will be created by WebSocket progress messages
@@ -164,17 +166,22 @@
     // Drag and drop on library panel
     let dragCounter = 0;
 
+    function isFileDrag(e) {
+      return [...(e.dataTransfer?.types || [])].includes("Files");
+    }
+    
     libraryPanel.ondragenter = (e) => {
       if (!M.currentUser) return;
-      if (!e.dataTransfer.types.includes("Files")) return;
+      if (!isFileDrag(e)) return;
       e.preventDefault();
       dragCounter++;
       dropzone.classList.remove("hidden");
     };
     
     libraryPanel.ondragleave = (e) => {
+      if (!isFileDrag(e)) return;
       e.preventDefault();
-      dragCounter--;
+      dragCounter = Math.max(0, dragCounter - 1);
       if (dragCounter === 0) {
         dropzone.classList.add("hidden");
       }
@@ -182,12 +189,13 @@
     
     libraryPanel.ondragover = (e) => {
       if (!M.currentUser) return;
-      if (!e.dataTransfer.types.includes("Files")) return;
+      if (!isFileDrag(e)) return;
       e.preventDefault();
       e.dataTransfer.dropEffect = "copy";
     };
     
     libraryPanel.ondrop = (e) => {
+      if (!isFileDrag(e)) return;
       e.preventDefault();
       dragCounter = 0;
       dropzone.classList.add("hidden");

public/utils.js

@@ -18,6 +18,14 @@
   // Toast history
   M.toastHistory = [];
 
+  function pruneVisibleToasts(container) {
+    const limit = window.matchMedia("(max-width: 768px)").matches ? 2 : 3;
+    const toasts = [...container.querySelectorAll(".toast:not(.toast-confirm)")];
+    while (toasts.length > limit) {
+      toasts.shift().remove();
+    }
+  }
+  
   // Toast notifications (log style - multiple visible)
   M.showToast = function(message, type = "info", duration = 5000) {
     const container = M.$("#toast-container");
@@ -25,6 +33,7 @@
     toast.className = "toast toast-" + type;
     toast.textContent = message;
     container.appendChild(toast);
+    pruneVisibleToasts(container);
     setTimeout(() => {
       toast.classList.add("fade-out");
       setTimeout(() => toast.remove(), 300);
@@ -39,6 +48,56 @@
     M.updateToastHistory();
   };
 
+  M.showConfirmToast = function(message, onConfirm, options = {}) {
+    const container = M.$("#toast-container");
+    const toast = document.createElement("div");
+    toast.className = "toast toast-warning toast-confirm";
+
+    const text = document.createElement("span");
+    text.className = "toast-confirm-message";
+    text.textContent = message;
+
+    const actions = document.createElement("div");
+    actions.className = "toast-actions";
+
+    const cancel = document.createElement("button");
+    cancel.type = "button";
+    cancel.className = "toast-action-cancel";
+    cancel.textContent = options.cancelText || "Cancel";
+
+    const confirm = document.createElement("button");
+    confirm.type = "button";
+    confirm.className = "toast-action-confirm";
+    confirm.textContent = options.confirmText || "Confirm";
+
+    actions.append(cancel, confirm);
+    toast.append(text, actions);
+    container.appendChild(toast);
+
+    let settled = false;
+    const close = () => {
+      toast.classList.add("fade-out");
+      setTimeout(() => toast.remove(), 300);
+    };
+    const finish = async (confirmed) => {
+      if (settled) return;
+      settled = true;
+      close();
+      if (confirmed) await onConfirm();
+    };
+
+    cancel.onclick = () => finish(false);
+    confirm.onclick = () => finish(true);
+    setTimeout(() => finish(false), options.duration || 12000);
+
+    M.toastHistory.push({
+      message: `Confirm: ${message}`,
+      type: "warning",
+      time: new Date()
+    });
+    M.updateToastHistory();
+  };
+  
   // Update toast history panel
   M.updateToastHistory = function() {
     const list = M.$("#toast-history-list");
@@ -112,10 +171,29 @@
   M.canControl = function() {
     if (!M.currentUser) return false;
     if (M.currentUser.isAdmin) return true;
+    if (M.currentUser.isGuest) return false;
     return M.currentUser.permissions?.some(p => 
       p.resource_type === "channel" && 
       (p.resource_id === M.currentChannelId || p.resource_id === null) && 
       p.permission === "control"
     );
   };
+
+  M.canCreateUserContent = function() {
+    return !!M.currentUser && !M.currentUser.isGuest;
+  };
+
+  M.updatePermissionUI = function() {
+    const canCreate = M.canCreateUserContent();
+    const newChannel = M.$("#btn-new-channel");
+    const newPlaylist = M.$("#btn-new-playlist");
+    const fetchUrl = M.$("#btn-fetch-url");
+
+    if (newChannel) newChannel.classList.toggle("hidden", !canCreate);
+    if (newPlaylist) newPlaylist.classList.toggle("hidden", !canCreate);
+    if (fetchUrl) {
+      const ytdlpReady = M.serverStatus?.ytdlp?.enabled && M.serverStatus?.ytdlp?.available;
+      fetchUrl.style.display = canCreate && ytdlpReady ? "" : "none";
+    }
+  };
 })();

public/visualizer.js

@@ -0,0 +1,781 @@
+// MusicRoom - Audio visualizer
+// Pure frontend Web Audio + canvas display for the shared audio element.
+
+(function() {
+  const M = window.MusicRoom;
+
+  const MODES = new Set(["off", "bars", "wave", "radial", "pulse"]);
+  const COOKIE_MAX_AGE = 60 * 60 * 24 * 400;
+  const TWO_PI = Math.PI * 2;
+  const PARTICLE_COUNT = 140;
+
+  let mode = "off";
+  let shell = null;
+  let canvas = null;
+  let ctx = null;
+  let selector = null;
+  let fullscreenButton = null;
+  let audioContext = null;
+  let source = null;
+  let analyser = null;
+  let frequencyData = null;
+  let waveformData = null;
+  let animationId = 0;
+  let graphUnavailable = false;
+  let particles = [];
+  let rememberedWidth = 0;
+  let rememberedHeight = 0;
+  let beatMemory = 0;
+  let energyMemory = 0;
+  let frame = 0;
+
+  function normalizeMode(value) {
+    return MODES.has(value) ? value : "off";
+  }
+
+  function decodeStoredValue(value) {
+    if (!value) return null;
+    try {
+      return decodeURIComponent(value);
+    } catch {
+      M.clearCookieValue(M.VISUALIZER_STORAGE_KEY);
+      return null;
+    }
+  }
+
+  function getSavedMode() {
+    const cookieMode = normalizeMode(decodeStoredValue(M.getCookieValue(M.VISUALIZER_STORAGE_KEY)));
+    if (cookieMode !== "off") return cookieMode;
+
+    try {
+      const storedMode = normalizeMode(localStorage.getItem(M.VISUALIZER_STORAGE_KEY));
+      if (storedMode !== "off") {
+        M.setCookieValue(M.VISUALIZER_STORAGE_KEY, storedMode, COOKIE_MAX_AGE);
+        return storedMode;
+      }
+    } catch {}
+
+    return "off";
+  }
+
+  function rememberMode(nextMode) {
+    const normalized = normalizeMode(nextMode);
+    if (normalized === "off") {
+      M.clearCookieValue(M.VISUALIZER_STORAGE_KEY);
+      try {
+        localStorage.removeItem(M.VISUALIZER_STORAGE_KEY);
+      } catch {}
+      return;
+    }
+
+    M.setCookieValue(M.VISUALIZER_STORAGE_KEY, normalized, COOKIE_MAX_AGE);
+    try {
+      localStorage.setItem(M.VISUALIZER_STORAGE_KEY, normalized);
+    } catch {}
+  }
+
+  function getColors() {
+    const styles = getComputedStyle(shell || document.body);
+    const value = (name) => {
+      const raw = styles.getPropertyValue(name).trim();
+      return raw && !raw.includes("var(") ? raw : "";
+    };
+
+    return {
+      accent: value("--visualizer-accent") || value("--accent") || "#44ee88",
+      secondary: value("--visualizer-secondary") || value("--warning") || "#66aaff",
+      background: value("--visualizer-bg") || "rgba(10, 10, 10, 0.82)",
+      muted: value("--visualizer-muted") || "rgba(255, 255, 255, 0.16)"
+    };
+  }
+
+  function resizeCanvas() {
+    if (!canvas || !ctx) return;
+    const rect = canvas.getBoundingClientRect();
+    const dpr = Math.min(window.devicePixelRatio || 1, 2);
+    const width = Math.max(1, Math.round(rect.width * dpr));
+    const height = Math.max(1, Math.round(rect.height * dpr));
+
+    if (canvas.width !== width || canvas.height !== height) {
+      canvas.width = width;
+      canvas.height = height;
+    }
+
+    ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
+
+    if (rememberedWidth !== canvas.clientWidth || rememberedHeight !== canvas.clientHeight) {
+      rememberedWidth = canvas.clientWidth;
+      rememberedHeight = canvas.clientHeight;
+      seedParticles(rememberedWidth, rememberedHeight);
+    }
+  }
+
+  function clearCanvas() {
+    if (!canvas || !ctx) return;
+    resizeCanvas();
+    ctx.clearRect(0, 0, canvas.clientWidth, canvas.clientHeight);
+  }
+
+  function seedParticles(width, height) {
+    particles = [];
+    const safeWidth = Math.max(width, 1);
+    const safeHeight = Math.max(height, 1);
+
+    for (let i = 0; i < PARTICLE_COUNT; i++) {
+      particles.push({
+        x: Math.random() * safeWidth,
+        y: Math.random() * safeHeight,
+        px: Math.random() * safeWidth,
+        py: Math.random() * safeHeight,
+        vx: (Math.random() - 0.5) * 0.55,
+        vy: (Math.random() - 0.5) * 0.55,
+        size: 0.8 + Math.random() * 2.4,
+        phase: Math.random() * TWO_PI,
+        spin: (Math.random() - 0.5) * 0.04,
+        lane: Math.random()
+      });
+    }
+  }
+
+  function initAudioGraph() {
+    if (source) return true;
+    if (graphUnavailable) return false;
+
+    const AudioContextCtor = window.AudioContext || window.webkitAudioContext;
+    if (!AudioContextCtor) {
+      graphUnavailable = true;
+      return false;
+    }
+
+    try {
+      audioContext = audioContext || new AudioContextCtor();
+      analyser = audioContext.createAnalyser();
+      analyser.fftSize = 2048;
+      analyser.minDecibels = -96;
+      analyser.maxDecibels = -10;
+      analyser.smoothingTimeConstant = 0.68;
+
+      source = audioContext.createMediaElementSource(M.audio);
+      source.connect(analyser);
+      analyser.connect(audioContext.destination);
+
+      frequencyData = new Uint8Array(analyser.frequencyBinCount);
+      waveformData = new Uint8Array(analyser.fftSize);
+      return true;
+    } catch (error) {
+      graphUnavailable = true;
+      console.warn("[Visualizer] Unable to attach audio graph", error);
+      return false;
+    }
+  }
+
+  function startVisualizer() {
+    if (animationId || mode === "off") return;
+    animationId = requestAnimationFrame(draw);
+  }
+
+  function stopVisualizer() {
+    if (animationId) {
+      cancelAnimationFrame(animationId);
+      animationId = 0;
+    }
+    clearCanvas();
+  }
+
+  function average(data, start, end) {
+    let total = 0;
+    const first = Math.max(0, Math.min(start, data.length));
+    const last = Math.max(first + 1, Math.min(end, data.length));
+    for (let i = first; i < last; i++) total += data[i];
+    return total / (last - first);
+  }
+
+  function bandAverage(startRatio, endRatio) {
+    if (!frequencyData) return 0;
+    const start = Math.floor(Math.max(0, Math.min(1, startRatio)) * frequencyData.length);
+    const end = Math.floor(Math.max(0, Math.min(1, endRatio)) * frequencyData.length);
+    return average(frequencyData, start, Math.max(start + 1, end)) / 255;
+  }
+
+  function bandValue(index, count) {
+    if (!frequencyData) return 0;
+    const a = Math.pow(index / count, 1.75);
+    const b = Math.pow((index + 1) / count, 1.75);
+    const start = Math.floor(a * frequencyData.length);
+    const end = Math.max(start + 2, Math.floor(b * frequencyData.length));
+    const raw = average(frequencyData, start, end) / 255;
+    return Math.pow(raw, 0.72);
+  }
+
+  function readAudioState(timestamp, hasLiveGraph) {
+    if (hasLiveGraph) {
+      analyser.getByteFrequencyData(frequencyData);
+      analyser.getByteTimeDomainData(waveformData);
+    }
+
+    const bass = hasLiveGraph ? bandAverage(0.005, 0.06) : 0.55 + Math.sin(timestamp / 310) * 0.25;
+    const mids = hasLiveGraph ? bandAverage(0.06, 0.36) : 0.45 + Math.sin(timestamp / 470 + 1.4) * 0.22;
+    const treble = hasLiveGraph ? bandAverage(0.36, 0.92) : 0.38 + Math.sin(timestamp / 230 + 2.2) * 0.18;
+    const energy = Math.max(0, Math.min(1, bass * 0.42 + mids * 0.36 + treble * 0.22));
+
+    beatMemory = Math.max(beatMemory * 0.9, bass);
+    energyMemory = energyMemory * 0.82 + energy * 0.18;
+
+    return {
+      bass,
+      mids,
+      treble,
+      energy,
+      beat: beatMemory,
+      smooth: energyMemory,
+      live: hasLiveGraph,
+      time: timestamp / 1000
+    };
+  }
+
+  function fillWithTrails(width, height, colors, state) {
+    ctx.globalCompositeOperation = "source-over";
+    ctx.globalAlpha = state.live ? 0.24 : 0.42;
+    ctx.fillStyle = colors.background;
+    ctx.fillRect(0, 0, width, height);
+    ctx.globalAlpha = 1;
+
+    const glow = ctx.createRadialGradient(
+      width * (0.48 + Math.sin(state.time * 0.4) * 0.08),
+      height * (0.52 + Math.cos(state.time * 0.33) * 0.14),
+      1,
+      width * 0.5,
+      height * 0.5,
+      Math.max(width, height) * (0.4 + state.energy * 0.25)
+    );
+    glow.addColorStop(0, colors.secondary);
+    glow.addColorStop(0.38, colors.accent);
+    glow.addColorStop(1, "transparent");
+    ctx.globalAlpha = 0.08 + state.energy * 0.1;
+    ctx.fillStyle = glow;
+    ctx.fillRect(0, 0, width, height);
+    ctx.globalAlpha = 1;
+  }
+
+  function drawGrid(width, height, colors, state) {
+    const spacing = Math.max(12, Math.min(34, width / 34));
+    const offset = (state.time * (30 + state.treble * 80)) % spacing;
+
+    ctx.save();
+    ctx.globalAlpha = 0.11 + state.energy * 0.08;
+    ctx.strokeStyle = colors.muted;
+    ctx.lineWidth = 1;
+
+    for (let x = -spacing + offset; x < width + spacing; x += spacing) {
+      ctx.beginPath();
+      ctx.moveTo(x, 0);
+      ctx.lineTo(x + Math.sin(state.time + x * 0.01) * 18, height);
+      ctx.stroke();
+    }
+
+    for (let y = height + spacing - offset; y > -spacing; y -= spacing) {
+      ctx.beginPath();
+      ctx.moveTo(0, y);
+      ctx.lineTo(width, y + Math.cos(state.time + y * 0.02) * 8);
+      ctx.stroke();
+    }
+
+    ctx.globalAlpha = 0.09 + state.beat * 0.08;
+    ctx.strokeStyle = colors.secondary;
+    for (let y = 0; y < height; y += 4) {
+      ctx.beginPath();
+      ctx.moveTo(0, y);
+      ctx.lineTo(width, y);
+      ctx.stroke();
+    }
+
+    ctx.restore();
+  }
+
+  function drawParticles(width, height, colors, state, intensity = 1) {
+    if (!particles.length) seedParticles(width, height);
+
+    ctx.save();
+    ctx.globalCompositeOperation = "lighter";
+
+    for (const p of particles) {
+      p.px = p.x;
+      p.py = p.y;
+
+      const wave = Math.sin(state.time * 2.2 + p.phase) * 0.65 + Math.cos(state.time + p.lane * 8) * 0.35;
+      const speed = (0.6 + state.energy * 3.2) * intensity;
+      p.vx += Math.cos(p.phase + state.time * (0.8 + p.lane)) * 0.015 * speed;
+      p.vy += Math.sin(p.phase * 1.7 + state.time * 1.15) * 0.018 * speed;
+      p.x += p.vx * speed + wave * state.treble * 1.8;
+      p.y += p.vy * speed + Math.sin(state.time * 1.4 + p.x * 0.015) * state.bass * 1.6;
+      p.vx *= 0.965;
+      p.vy *= 0.965;
+      p.phase += p.spin + state.energy * 0.012;
+
+      if (p.x < -20) p.x = width + 20;
+      if (p.x > width + 20) p.x = -20;
+      if (p.y < -20) p.y = height + 20;
+      if (p.y > height + 20) p.y = -20;
+
+      const useSecondary = p.lane > 0.52;
+      ctx.strokeStyle = useSecondary ? colors.secondary : colors.accent;
+      ctx.fillStyle = useSecondary ? colors.secondary : colors.accent;
+      ctx.globalAlpha = 0.14 + state.energy * 0.34;
+      ctx.lineWidth = Math.max(0.8, p.size * (0.5 + state.beat * 1.4));
+      ctx.beginPath();
+      ctx.moveTo(p.px, p.py);
+      ctx.lineTo(p.x, p.y);
+      ctx.stroke();
+
+      if (frame % 2 === 0 || state.energy > 0.52) {
+        ctx.globalAlpha = 0.16 + state.treble * 0.45;
+        ctx.beginPath();
+        ctx.arc(p.x, p.y, p.size * (0.7 + state.beat * 1.8), 0, TWO_PI);
+        ctx.fill();
+      }
+    }
+
+    ctx.restore();
+    ctx.globalAlpha = 1;
+    ctx.globalCompositeOperation = "source-over";
+  }
+
+  function drawSpectrumRibbon(width, height, colors, state, flipped = false) {
+    const count = Math.max(44, Math.min(150, Math.floor(width / 7)));
+    const step = width / count;
+    const baseY = flipped ? height * 0.74 : height * 0.26;
+    const direction = flipped ? -1 : 1;
+
+    ctx.save();
+    ctx.globalCompositeOperation = "lighter";
+    ctx.strokeStyle = flipped ? colors.secondary : colors.accent;
+    ctx.fillStyle = flipped ? colors.secondary : colors.accent;
+    ctx.lineWidth = 1.4 + state.energy * 2.4;
+    ctx.globalAlpha = 0.33 + state.energy * 0.25;
+    ctx.beginPath();
+
+    for (let i = 0; i <= count; i++) {
+      const value = state.live ? bandValue(i % count, count) : 0.35 + Math.sin(state.time * 3 + i * 0.27) * 0.26;
+      const x = i * step;
+      const y = baseY + direction * (value * height * 0.3 + Math.sin(state.time * 2 + i * 0.18) * height * 0.035);
+      if (i === 0) ctx.moveTo(x, baseY);
+      ctx.lineTo(x, y);
+    }
+    ctx.lineTo(width, baseY);
+    ctx.closePath();
+    ctx.fill();
+
+    ctx.globalAlpha = 0.78;
+    ctx.stroke();
+    ctx.restore();
+  }
+
+  function drawWaveformRibbon(width, height, colors, state, amplitude = 0.32, offset = 0, color = colors.accent) {
+    ctx.save();
+    ctx.globalCompositeOperation = "lighter";
+    ctx.strokeStyle = color;
+    ctx.lineWidth = 1.2 + state.energy * 3.2;
+    ctx.globalAlpha = 0.4 + state.energy * 0.36;
+    ctx.beginPath();
+
+    const samples = state.live && waveformData ? waveformData.length : 720;
+    const step = Math.max(2, Math.floor(samples / Math.max(90, Math.min(240, width / 4))));
+    let first = true;
+
+    for (let i = 0; i < samples; i += step) {
+      const t = i / Math.max(1, samples - 1);
+      const raw = state.live ? (waveformData[i] - 128) / 128 : Math.sin(t * TWO_PI * 5 + state.time * 3 + offset) * 0.55 + Math.sin(t * TWO_PI * 17 - state.time * 2) * 0.15;
+      const x = t * width;
+      const y = height * 0.5 + raw * height * amplitude + Math.sin(t * TWO_PI * 2 + state.time + offset) * state.bass * height * 0.08;
+      if (first) {
+        ctx.moveTo(x, y);
+        first = false;
+      } else {
+        ctx.lineTo(x, y);
+      }
+    }
+
+    ctx.stroke();
+    ctx.restore();
+  }
+
+  function drawBars(width, height, colors, state) {
+    drawGrid(width, height, colors, state);
+    drawSpectrumRibbon(width, height, colors, state, false);
+    drawSpectrumRibbon(width, height, colors, state, true);
+
+    const count = Math.max(56, Math.min(180, Math.floor(width / 5)));
+    const gap = Math.max(1, Math.min(3, width / 380));
+    const barWidth = Math.max(2, width / count - gap);
+    const centerY = height / 2;
+    const gradient = ctx.createLinearGradient(0, height, 0, 0);
+    gradient.addColorStop(0, colors.secondary);
+    gradient.addColorStop(0.5, colors.accent);
+    gradient.addColorStop(1, colors.secondary);
+
+    ctx.save();
+    ctx.globalCompositeOperation = "lighter";
+    ctx.shadowColor = colors.accent;
+    ctx.shadowBlur = 10 + state.beat * 20;
+    ctx.fillStyle = gradient;
+
+    for (let i = 0; i < count; i++) {
+      const value = state.live ? bandValue(i, count) : 0.28 + Math.sin(state.time * 4 + i * 0.21) * 0.25 + Math.sin(state.time * 2.1 + i * 0.07) * 0.16;
+      const pulse = Math.max(0, Math.min(1, value + state.beat * 0.18));
+      const barHeight = Math.max(2, pulse * height * 0.47);
+      const x = i * (barWidth + gap);
+      const skew = Math.sin(state.time * 3 + i * 0.25) * state.treble * 5;
+
+      ctx.globalAlpha = 0.45 + pulse * 0.55;
+      ctx.fillRect(x + skew, centerY - barHeight, barWidth, barHeight);
+      ctx.fillRect(x - skew, centerY, barWidth, barHeight);
+
+      if (i % 3 === 0) {
+        ctx.globalAlpha = 0.35 + state.treble * 0.4;
+        ctx.fillRect(x, centerY - barHeight - 4 - state.treble * 9, barWidth, 2);
+        ctx.fillRect(x, centerY + barHeight + 2 + state.treble * 9, barWidth, 2);
+      }
+    }
+
+    ctx.restore();
+    drawWaveformRibbon(width, height, colors, state, 0.18, 0, colors.secondary);
+    drawWaveformRibbon(width, height, colors, state, 0.1, Math.PI, colors.accent);
+    drawParticles(width, height, colors, state, 1.1);
+  }
+
+  function drawWave(width, height, colors, state) {
+    drawGrid(width, height, colors, state);
+    drawSpectrumRibbon(width, height, colors, state, false);
+
+    ctx.save();
+    ctx.globalCompositeOperation = "lighter";
+    for (let layer = 0; layer < 6; layer++) {
+      const color = layer % 2 ? colors.secondary : colors.accent;
+      drawWaveformRibbon(width, height, colors, state, 0.13 + layer * 0.045, layer * 0.9 + state.time * 0.4, color);
+    }
+    ctx.restore();
+
+    const nodes = 34;
+    ctx.save();
+    ctx.globalCompositeOperation = "lighter";
+    for (let i = 0; i < nodes; i++) {
+      const t = i / (nodes - 1);
+      const sampleIndex = state.live ? Math.floor(t * (waveformData.length - 1)) : 0;
+      const wave = state.live ? (waveformData[sampleIndex] - 128) / 128 : Math.sin(t * TWO_PI * 8 + state.time * 3);
+      const value = state.live ? bandValue(i, nodes) : Math.abs(wave);
+      const x = t * width;
+      const y = height * 0.5 + wave * height * 0.28;
+      const radius = 2 + value * 13 + state.beat * 6;
+
+      ctx.globalAlpha = 0.14 + value * 0.55;
+      ctx.fillStyle = i % 2 ? colors.secondary : colors.accent;
+      ctx.beginPath();
+      ctx.arc(x, y, radius, 0, TWO_PI);
+      ctx.fill();
+    }
+    ctx.restore();
+
+    drawParticles(width, height, colors, state, 1.35);
+  }
+
+  function drawRadial(width, height, colors, state) {
+    drawGrid(width, height, colors, state);
+
+    const cx = width / 2;
+    const cy = height / 2;
+    const radius = Math.max(14, Math.min(width, height) * (0.14 + state.bass * 0.08));
+    const spokes = 192;
+
+    ctx.save();
+    ctx.translate(cx, cy);
+    ctx.rotate(state.time * (0.18 + state.treble * 0.22));
+    ctx.globalCompositeOperation = "lighter";
+    ctx.lineCap = "round";
+
+    for (let ring = 0; ring < 3; ring++) {
+      const ringRadius = radius + ring * Math.min(width, height) * 0.105 + state.beat * 18;
+      ctx.globalAlpha = 0.18 + ring * 0.08;
+      ctx.strokeStyle = ring % 2 ? colors.secondary : colors.accent;
+      ctx.lineWidth = 1 + state.energy * 2.4;
+      ctx.beginPath();
+      for (let i = 0; i <= spokes; i++) {
+        const value = state.live ? bandValue(i % spokes, spokes) : 0.34 + Math.sin(state.time * 4 + i * 0.16 + ring) * 0.24;
+        const angle = i / spokes * TWO_PI;
+        const waveRadius = ringRadius + value * Math.min(width, height) * (0.08 + ring * 0.035);
+        const x = Math.cos(angle) * waveRadius;
+        const y = Math.sin(angle) * waveRadius;
+        if (i === 0) ctx.moveTo(x, y);
+        else ctx.lineTo(x, y);
+      }
+      ctx.stroke();
+    }
+
+    for (let i = 0; i < spokes; i++) {
+      const value = state.live ? bandValue(i, spokes) : 0.28 + Math.sin(state.time * 6 + i * 0.23) * 0.24;
+      const angle = i / spokes * TWO_PI;
+      const start = radius * (0.68 + Math.sin(state.time + i) * 0.04);
+      const end = start + value * Math.min(width, height) * 0.42 + state.beat * 28;
+
+      ctx.strokeStyle = i % 2 ? colors.secondary : colors.accent;
+      ctx.globalAlpha = 0.16 + value * 0.72;
+      ctx.lineWidth = 0.9 + value * 3.8;
+      ctx.beginPath();
+      ctx.moveTo(Math.cos(angle) * start, Math.sin(angle) * start);
+      ctx.lineTo(Math.cos(angle) * end, Math.sin(angle) * end);
+      ctx.stroke();
+    }
+
+    ctx.globalAlpha = 0.22 + state.beat * 0.26;
+    ctx.fillStyle = colors.accent;
+    ctx.beginPath();
+    ctx.arc(0, 0, radius * (0.55 + state.beat * 0.45), 0, TWO_PI);
+    ctx.fill();
+    ctx.restore();
+
+    drawParticles(width, height, colors, state, 1.2);
+  }
+
+  function drawPulse(width, height, colors, state) {
+    drawGrid(width, height, colors, state);
+
+    const cx = width / 2;
+    const cy = height / 2;
+    const maxRadius = Math.hypot(width, height) * 0.55;
+
+    ctx.save();
+    ctx.globalCompositeOperation = "lighter";
+
+    for (let i = 0; i < 10; i++) {
+      const phase = (state.time * (0.18 + state.energy * 0.24) + i / 10) % 1;
+      const radius = phase * maxRadius;
+      ctx.globalAlpha = (1 - phase) * (0.1 + state.beat * 0.22);
+      ctx.strokeStyle = i % 2 ? colors.secondary : colors.accent;
+      ctx.lineWidth = 1 + state.energy * 5;
+      ctx.beginPath();
+      ctx.arc(cx, cy, radius, 0, TWO_PI);
+      ctx.stroke();
+    }
+
+    const rays = 96;
+    for (let i = 0; i < rays; i++) {
+      const value = state.live ? bandValue(i, rays) : 0.32 + Math.sin(state.time * 7 + i * 0.31) * 0.25;
+      const angle = i / rays * TWO_PI + state.time * 0.25;
+      const length = Math.min(width, height) * (0.16 + value * 0.7 + state.beat * 0.22);
+      const wobble = Math.sin(state.time * 3 + i * 0.4) * state.treble * 18;
+      ctx.globalAlpha = 0.15 + value * 0.58;
+      ctx.strokeStyle = i % 2 ? colors.secondary : colors.accent;
+      ctx.lineWidth = 0.9 + value * 3.5;
+      ctx.beginPath();
+      ctx.moveTo(cx + Math.cos(angle) * 8, cy + Math.sin(angle) * 8);
+      ctx.lineTo(cx + Math.cos(angle) * (length + wobble), cy + Math.sin(angle) * (length - wobble));
+      ctx.stroke();
+    }
+
+    const coreRadius = Math.max(8, Math.min(width, height) * (0.1 + state.beat * 0.18));
+    ctx.globalAlpha = 0.3 + state.beat * 0.45;
+    ctx.fillStyle = colors.secondary;
+    ctx.beginPath();
+    ctx.arc(cx, cy, coreRadius * 2.2, 0, TWO_PI);
+    ctx.fill();
+
+    ctx.globalAlpha = 0.8;
+    ctx.fillStyle = colors.accent;
+    ctx.beginPath();
+    ctx.arc(cx, cy, coreRadius, 0, TWO_PI);
+    ctx.fill();
+    ctx.restore();
+
+    drawWaveformRibbon(width, height, colors, state, 0.2, state.time, colors.secondary);
+    drawParticles(width, height, colors, state, 1.6);
+  }
+
+  function drawIdle(width, height, colors, timestamp) {
+    const state = readAudioState(timestamp, false);
+    fillWithTrails(width, height, colors, state);
+    drawGrid(width, height, colors, state);
+
+    if (mode === "radial") drawRadial(width, height, colors, state);
+    else if (mode === "pulse") drawPulse(width, height, colors, state);
+    else if (mode === "wave") drawWave(width, height, colors, state);
+    else drawBars(width, height, colors, state);
+  }
+
+  function draw(timestamp) {
+    animationId = requestAnimationFrame(draw);
+    if (!canvas || !ctx || mode === "off") return;
+
+    frame++;
+    resizeCanvas();
+    const width = canvas.clientWidth;
+    const height = canvas.clientHeight;
+    const colors = getColors();
+    const hasLiveGraph = analyser
+      && frequencyData
+      && waveformData
+      && audioContext?.state === "running"
+      && !M.audio.paused
+      && !!M.audio.src;
+
+    if (!hasLiveGraph) {
+      drawIdle(width, height, colors, timestamp);
+      return;
+    }
+
+    const state = readAudioState(timestamp, true);
+    fillWithTrails(width, height, colors, state);
+
+    if (mode === "wave") drawWave(width, height, colors, state);
+    else if (mode === "radial") drawRadial(width, height, colors, state);
+    else if (mode === "pulse") drawPulse(width, height, colors, state);
+    else drawBars(width, height, colors, state);
+  }
+
+  function isFullscreen() {
+    return document.fullscreenElement === shell
+      || document.webkitFullscreenElement === shell
+      || shell?.classList.contains("is-fullscreen");
+  }
+
+  function updateFullscreenButton() {
+    if (!fullscreenButton || !shell) return;
+    const active = isFullscreen();
+    shell.classList.toggle("is-fullscreen", active);
+    fullscreenButton.textContent = active ? "×" : "⛶";
+    fullscreenButton.title = active ? "Exit fullscreen visualizer" : "Fullscreen visualizer";
+    fullscreenButton.setAttribute("aria-label", fullscreenButton.title);
+  }
+
+  async function toggleFullscreen() {
+    if (!shell) return;
+    if (mode === "off") M.applyVisualizer("bars");
+
+    try {
+      if (document.fullscreenElement || document.webkitFullscreenElement || shell.classList.contains("is-fullscreen")) {
+        if (document.fullscreenElement && document.exitFullscreen) await document.exitFullscreen();
+        else if (document.webkitFullscreenElement && document.webkitExitFullscreen) await document.webkitExitFullscreen();
+        else shell.classList.remove("is-fullscreen");
+      } else if (shell.requestFullscreen) {
+        await shell.requestFullscreen();
+      } else if (shell.webkitRequestFullscreen) {
+        await shell.webkitRequestFullscreen();
+      } else {
+        shell.classList.add("is-fullscreen");
+      }
+    } catch (error) {
+      shell.classList.toggle("is-fullscreen");
+      console.warn("[Visualizer] Fullscreen request failed", error);
+    }
+
+    updateFullscreenButton();
+    resizeCanvas();
+    M.resumeVisualizer?.();
+  }
+
+  M.applyVisualizer = function(nextMode, remember = true) {
+    mode = normalizeMode(nextMode);
+    if (selector) selector.value = mode;
+    if (shell) shell.classList.toggle("hidden", mode === "off");
+    document.getElementById("player-content")?.classList.toggle("visualizer-active", mode !== "off");
+    if (remember) rememberMode(mode);
+
+    if (mode === "off") {
+      stopVisualizer();
+    } else {
+      resizeCanvas();
+      startVisualizer();
+    }
+  };
+
+  M.resumeVisualizer = async function() {
+    if (mode === "off") return false;
+    if (!initAudioGraph()) return false;
+
+    try {
+      if (audioContext.state === "suspended") {
+        await audioContext.resume();
+      }
+      startVisualizer();
+      return audioContext.state === "running";
+    } catch (error) {
+      console.warn("[Visualizer] Unable to resume audio context", error);
+      return false;
+    }
+  };
+
+  M.visualizer = {
+    getMode: () => mode,
+    hasGraph: () => !!source,
+    isRunning: () => audioContext?.state === "running",
+    isFullscreen,
+    toggleFullscreen
+  };
+
+  document.addEventListener("DOMContentLoaded", () => {
+    shell = document.getElementById("visualizer-shell");
+    canvas = document.getElementById("visualizer-canvas");
+    selector = document.getElementById("visualizer-select");
+    fullscreenButton = document.getElementById("btn-visualizer-fullscreen");
+    ctx = canvas?.getContext("2d") || null;
+
+    M.applyVisualizer(getSavedMode(), false);
+    updateFullscreenButton();
+
+    if (selector) {
+      selector.onchange = () => {
+        M.applyVisualizer(selector.value);
+        M.resumeVisualizer();
+      };
+    }
+
+    if (fullscreenButton) {
+      fullscreenButton.onclick = (event) => {
+        event.preventDefault();
+        event.stopPropagation();
+        toggleFullscreen();
+      };
+    }
+
+    if (window.ResizeObserver && shell) {
+      const observer = new ResizeObserver(resizeCanvas);
+      observer.observe(shell);
+    }
+
+    window.addEventListener("resize", resizeCanvas);
+  });
+
+  document.addEventListener("fullscreenchange", () => {
+    updateFullscreenButton();
+    resizeCanvas();
+  });
+  document.addEventListener("webkitfullscreenchange", () => {
+    updateFullscreenButton();
+    resizeCanvas();
+  });
+
+  document.addEventListener("pointerdown", () => {
+    if (mode !== "off") M.resumeVisualizer();
+  }, { passive: true });
+
+  document.addEventListener("keydown", (event) => {
+    if (event.key === "Escape" && shell?.classList.contains("is-fullscreen") && !document.fullscreenElement && !document.webkitFullscreenElement) {
+      shell.classList.remove("is-fullscreen");
+      updateFullscreenButton();
+      resizeCanvas();
+      return;
+    }
+    if (mode !== "off") M.resumeVisualizer();
+  });
+
+  M.audio.addEventListener("play", () => {
+    if (mode !== "off") {
+      if (audioContext && audioContext.state === "suspended") {
+        audioContext.resume().catch(() => {});
+      }
+      startVisualizer();
+    }
+  });
+
+  M.audio.addEventListener("pause", () => {
+    if (mode !== "off") startVisualizer();
+  });
+})();

routes/tracks.ts

@@ -19,6 +19,7 @@ export function handleGetLibrary(req: Request, server: any): Response {
     duration: t.duration,
     replayGainDb: t.replayGainDb,
     replayPeak: t.replayPeak,
+    createdAt: t.created_at,
     available: t.available,
   }));
   return Response.json(tracks, { headers });