feat: add multi-user support for favorites management and room clock synchronization

- Implemented a new API endpoint for retrieving and managing user favorites in /api/users.
- Added functionality for admins to edit the shared "main" user's favorites.
- Created a one-shot DB smoke test script for verifying multi-user kiosk migrations.
- Introduced a RoomClock class for synchronizing server time across clients using WebSocket.

server/public/assets/playGate-C1e0nYli.js

@@ -0,0 +1 @@
+function x(l,t={}){let e,i=0,r=!1;function m(){const h=location.protocol==="https:"?"wss":"ws",o=new URLSearchParams;t.room&&o.set("room",t.room),t.kind&&o.set("kind",t.kind);const c=o.toString();e=new WebSocket(`${h}://${location.host}/ws${c?"?"+c:""}`),e.addEventListener("open",()=>{var n;i=0,(n=t.onOpen)==null||n.call(t)}),e.addEventListener("message",n=>{try{l(JSON.parse(n.data))}catch{}}),e.addEventListener("close",()=>{var n;(n=t.onClose)==null||n.call(t),!r&&(i=Math.min(i+1,6),setTimeout(m,500*2**i))}),e.addEventListener("error",()=>e.close())}return m(),{send(h){(e==null?void 0:e.readyState)===WebSocket.OPEN&&e.send(JSON.stringify(h))},close(){r=!0,e==null||e.close()},get readyState(){return e==null?void 0:e.readyState}}}const w=1e3,N=5e3,C=5,I=8,v=16;function S(l){if(!l.length)return 0;const t=l.slice().sort((i,r)=>i-r),e=t.length>>1;return t.length%2?t[e]:(t[e-1]+t[e])/2}class M{constructor(){this.offset=0,this.rtt=1/0,this.offsetStd=1/0,this.samples=[],this.synced=!1,this._pending=new Map,this._listeners=new Set,this._timeoutId=null,this._ws=null}attachWs(t){this._ws=t,this.reset();let e=0;const i=()=>{if(e++>=5){this._scheduleNext();return}this._sendPing(),setTimeout(i,150)};i()}detach(){this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=null,this._pending.clear(),this._ws=null}reset(){this.samples=[],this.synced=!1,this.offsetStd=1/0,this._pending.clear(),this._timeoutId&&(clearTimeout(this._timeoutId),this._timeoutId=null)}now(){return Date.now()+this.offset}isStable(){return this.synced&&this.samples.length>=I&&this.offsetStd<=C}onUpdate(t){return this._listeners.add(t),()=>this._listeners.delete(t)}handlePong(t){if(this._pending.get(t.t1)==null)return;this._pending.delete(t.t1);const i=Date.now(),r=i-t.t1,m=t.t2-(t.t1+i)/2;this.samples.push({offset:m,rtt:r}),this.samples.length>v&&this.samples.shift();const h=S(this.samples.map(s=>s.rtt)),o=Math.max(h*2,h+10),c=this.samples.filter(s=>s.rtt<=o),n=c.length?c.map(s=>s.offset):this.samples.map(s=>s.offset),_=S(n),p=n.reduce((s,d)=>s+d,0)/n.length,f=n.reduce((s,d)=>s+(d-p)**2,0)/n.length;this.offsetStd=Math.sqrt(f),this.offset=_,this.rtt=r,this.synced=!0;for(const s of this._listeners)s({offset:this.offset,rtt:this.rtt,offsetStd:this.offsetStd,samples:this.samples.length,accepted:c.length,stable:this.isStable()})}_sendPing(){if(!this._ws)return;const t=Date.now();this._pending.set(t,t);for(const e of this._pending.keys())t-e>5e3&&this._pending.delete(e);this._ws.send({type:"clock-ping",t1:t})}_scheduleNext(){this._timeoutId&&clearTimeout(this._timeoutId);const t=this.isStable()?N:w;this._timeoutId=setTimeout(()=>{this._sendPing(),this._scheduleNext()},t)}}const E="oradio.autoplayDismissed";function b(){var l;try{return!!(typeof window<"u"&&((l=window.oradioNative)!=null&&l.isElectron))}catch{return!1}}function L(){if(!b())return!1;try{return localStorage.getItem(E)==="1"}catch{return!1}}let u=null;function T({stationName:l="Radio",subtitle:t="",onStart:e,onCancel:i}={}){if(u)return u.promise;let r,m;const h=new Promise((a,g)=>{r=a,m=g}),o=document.createElement("div");o.className="play-gate-backdrop",o.setAttribute("role","dialog"),o.setAttribute("aria-modal","true"),o.setAttribute("aria-label","Tap to start audio");const c=document.createElement("div");c.className="play-gate-card";const n=document.createElement("h2");n.className="play-gate-title",n.textContent="Tap to start audio",c.appendChild(n);const _=document.createElement("div");if(_.className="play-gate-station",_.textContent=l,c.appendChild(_),t){const a=document.createElement("div");a.className="play-gate-sub",a.textContent=t,c.appendChild(a)}const p=document.createElement("div");p.className="play-gate-row";const f=document.createElement("button");f.className="play-gate-start",f.textContent="▶ Start";const s=document.createElement("button");s.className="play-gate-cancel",s.textContent="Cancel",p.appendChild(f),p.appendChild(s),c.appendChild(p);let d=null;if(b()){const a=document.createElement("label");a.className="play-gate-dismiss",d=document.createElement("input"),d.type="checkbox",d.id="play-gate-dismiss-cb",a.appendChild(d);const g=document.createElement("span");g.textContent=" Don't show again on this device",a.appendChild(g),c.appendChild(a)}o.appendChild(c),document.body.appendChild(o),queueMicrotask(()=>f.focus());function y(){var a;(a=u==null?void 0:u.backdrop)!=null&&a.parentNode&&u.backdrop.parentNode.removeChild(u.backdrop),u=null}function k(){if(d&&d.checked)try{localStorage.setItem(E,"1")}catch{}}return f.addEventListener("click",()=>{k(),y();try{e&&e()}catch{}r()}),s.addEventListener("click",()=>{y();try{i&&i()}catch{}m(new Error("autoplay-cancelled"))}),o.addEventListener("keydown",a=>{a.key==="Escape"&&s.click()}),u={backdrop:o,promise:h},h}export{M as R,L as a,x as c,T as s};