feat(ui): persist user settings and audio position across sessions

- Replace double inline player controls with compact 'now playing' indicator when mini-bar is active
- Add user_settings PocketBase collection (auto_next, voice, speed) and audio_time field on progress
- Add getSettings/saveSettings/setAudioTime/getAudioTime server functions
- Add GET/PUT /api/settings and GET/PATCH /api/progress/audio-time API routes
- Load settings server-side in layout and apply to audioStore on mount
- Debounced 800ms effect persists settings changes to DB
- Save audio currentTime on pause/end; restore position when replaying a chapter

ui/src/lib/server/pocketbase.ts

@@ -42,9 +42,20 @@ export interface Progress {
 	user_id?: string;
 	slug: string;
 	chapter: number;
+	audio_time?: number;
 	updated: string;
 }
 
+export interface UserSettings {
+	id?: string;
+	session_id: string;
+	user_id?: string;
+	auto_next: boolean;
+	voice: string;
+	speed: number;
+	updated?: string;
+}
+
 export interface User {
 	id: string;
 	username: string;
@@ -395,3 +406,102 @@ export async function loginUser(username: string, password: string): Promise<Use
 	log.info('pocketbase', 'loginUser: success', { username, role: user.role });
 	return user;
 }
+
+// ─── User settings ────────────────────────────────────────────────────────────
+
+function settingsFilter(sessionId: string, userId?: string): string {
+	if (userId) return `user_id="${userId}"`;
+	return `session_id="${sessionId}"`;
+}
+
+export async function getSettings(
+	sessionId: string,
+	userId?: string
+): Promise<UserSettings | null> {
+	return listOne<UserSettings>('user_settings', settingsFilter(sessionId, userId));
+}
+
+export async function saveSettings(
+	sessionId: string,
+	settings: { autoNext: boolean; voice: string; speed: number },
+	userId?: string
+): Promise<void> {
+	const existing = await listOne<UserSettings & { id: string }>(
+		'user_settings',
+		settingsFilter(sessionId, userId)
+	);
+
+	const payload: Partial<UserSettings> = {
+		session_id: sessionId,
+		auto_next: settings.autoNext,
+		voice: settings.voice,
+		speed: settings.speed,
+		updated: new Date().toISOString()
+	};
+	if (userId) payload.user_id = userId;
+
+	if (existing) {
+		const res = await pbPatch(`/api/collections/user_settings/records/${existing.id}`, payload);
+		if (!res.ok) {
+			const body = await res.text().catch(() => '');
+			log.error('pocketbase', 'saveSettings PATCH failed', { status: res.status, body });
+		}
+	} else {
+		const res = await pbPost('/api/collections/user_settings/records', payload);
+		if (!res.ok) {
+			const body = await res.text().catch(() => '');
+			log.error('pocketbase', 'saveSettings POST failed', { status: res.status, body });
+		}
+	}
+}
+
+// ─── Audio time ───────────────────────────────────────────────────────────────
+
+export async function setAudioTime(
+	sessionId: string,
+	slug: string,
+	chapter: number,
+	audioTime: number,
+	userId?: string
+): Promise<void> {
+	const existing = await listOne<Progress & { id: string }>(
+		'progress',
+		progressFilter(sessionId, slug, userId)
+	);
+	if (!existing) {
+		// No progress record yet — create one with audio_time
+		const payload: Partial<Progress> = {
+			session_id: sessionId,
+			slug,
+			chapter,
+			audio_time: audioTime,
+			updated: new Date().toISOString()
+		};
+		if (userId) payload.user_id = userId;
+		const res = await pbPost('/api/collections/progress/records', payload);
+		if (!res.ok) {
+			const body = await res.text().catch(() => '');
+			log.error('pocketbase', 'setAudioTime POST failed', { slug, chapter, status: res.status, body });
+		}
+		return;
+	}
+	const res = await pbPatch(`/api/collections/progress/records/${existing.id}`, {
+		audio_time: audioTime,
+		updated: new Date().toISOString()
+	});
+	if (!res.ok) {
+		const body = await res.text().catch(() => '');
+		log.error('pocketbase', 'setAudioTime PATCH failed', { slug, chapter, status: res.status, body });
+	}
+}
+
+export async function getAudioTime(
+	sessionId: string,
+	slug: string,
+	chapter: number,
+	userId?: string
+): Promise<number | null> {
+	const row = await listOne<Progress>('progress', progressFilter(sessionId, slug, userId));
+	if (!row || !row.audio_time) return null;
+	return row.audio_time;
+}