player scrubber sync attempt

src/lib/components/GlobalPlayer.svelte

@@ -62,11 +62,6 @@
 	let currentTime = $state(0);
 	let duration = $state(0);
 
-	// Seek scrubber value that both mobile + desktop sliders bind to.
-	// We keep it in sync with `currentTime` unless the user is actively dragging.
-	let scrubValue = $state(0);
-	let isScrubbing = $state(false);
-
 	// local UI derived from viewport; not persisted
 	let isMobile = $state(false);
 
@@ -129,20 +124,8 @@
 		},
 	});
 
-	function onScrubInput(e: Event) {
+	// Scrubber is now driven by `bind:currentTime` on the <audio> element and
-		if (!audioEl) return;
+	// `bind:value={currentTime}` on the sliders, so we don't need explicit handlers.
-		const next = Number((e.currentTarget as HTMLInputElement).value);
-		if (!Number.isFinite(next)) return;
-
-		isScrubbing = true;
-		scrubValue = next;
-		audioEl.currentTime = Math.max(0, next);
-	}
-
-	function onScrubCommit() {
-		// Release "user is dragging" mode so timeupdate can drive the UI again.
-		isScrubbing = false;
-	}
 
 	function syncAudioToCurrentTrack() {
 		if (!audioEl) return;
@@ -258,13 +241,9 @@
 		media.setPlaybackState("paused");
 	}
 	function onAudioTimeUpdate() {
+		// `currentTime` is synced via `bind:currentTime` on <audio>.
+		// Keep Media Session position state updated whenever we get timeupdate.
 		if (!audioEl) return;
-		currentTime = audioEl.currentTime || 0;
-
-		// Keep the shared scrubber value synced to playback time unless the user is dragging.
-		if (!isScrubbing) {
-			scrubValue = currentTime;
-		}
 
 		media.updatePositionState({
 			duration,
@@ -273,13 +252,8 @@
 		});
 	}
 	function onAudioLoadedMetadata() {
+		// `duration` is synced via `bind:duration` on <audio>.
 		if (!audioEl) return;
-		duration = Number.isFinite(audioEl.duration) ? audioEl.duration : 0;
-
-		// On metadata load (track change), ensure scrubber aligns with currentTime.
-		if (!isScrubbing) {
-			scrubValue = currentTime;
-		}
 
 		media.updatePositionState({
 			duration,
@@ -560,13 +534,8 @@
 						min="0"
 						max={Math.max(0, duration)}
 						step="0.1"
-						value={Math.min(scrubValue, duration || 0)}
+						bind:value={currentTime}
 						disabled={!snap.currentTrack || duration <= 0}
-						oninput={onScrubInput}
-						onchange={onScrubCommit}
-						onpointerup={onScrubCommit}
-						ontouchend={onScrubCommit}
-						onkeyup={onScrubCommit}
 					/>
 				</label>
 			</div>
@@ -819,13 +788,8 @@
 							min="0"
 							max={Math.max(0, duration)}
 							step="0.1"
-							value={Math.min(scrubValue, duration || 0)}
+							bind:value={currentTime}
 							disabled={!snap.currentTrack || duration <= 0}
-							oninput={onScrubInput}
-							onchange={onScrubCommit}
-							onpointerup={onScrubCommit}
-							ontouchend={onScrubCommit}
-							onkeyup={onScrubCommit}
 						/>
 					</label>
 
@@ -971,6 +935,8 @@
 	bind:this={audioEl}
 	class="hidden"
 	preload="metadata"
+	bind:currentTime
+	bind:duration
 	onplay={onAudioPlay}
 	onpause={onAudioPause}
 	ontimeupdate={onAudioTimeUpdate}