feat(drive): add drive config menu

frontend/src/lib/components/DrivePicker.svelte

@@ -66,11 +66,10 @@
 {#if drivesStore.loaded && drivesStore.drives.length > 0}
 	<ul class="drive-picker" aria-label={t('drive.picker', 'Drives')}>
 		{#each sortedDrives as d (d.id)}
-			<li>
+			<li class="drive-picker__row" class:drive-picker__row--active={isActive(d)}>
 				<button
 					type="button"
 					class="drive-picker__item"
-					class:drive-picker__item--active={isActive(d)}
 					onclick={() => open(d)}
 					title={pctUsed(d) !== null
 						? `${d.name} — ${formatBytes(d.used_bytes)} / ${formatBytes(d.quota_bytes ?? 0)}`
@@ -79,6 +78,15 @@
 					<Icon name={driveIcon(d)} />
 					<span class="drive-picker__name">{d.name}</span>
 				</button>
+				<a
+					href={`/config/drive/${d.id}`}
+					class="drive-picker__settings"
+					title={t('drive.settings_aria', 'Drive settings')}
+					aria-label={t('drive.settings_aria', 'Drive settings')}
+					onclick={() => onnavigate?.()}
+				>
+					<Icon name="cog" />
+				</a>
 				{#if pctUsed(d) !== null}
 					<div
 						class="drive-picker__bar"
@@ -107,12 +115,19 @@
 		flex-direction: column;
 	}
 
+	/* Each row is a small grid: drive button + gear icon on the top line,
+	   optional usage bar spanning both columns below. */
+	.drive-picker__row {
+		display: grid;
+		grid-template-columns: 1fr auto;
+		align-items: center;
+	}
+
 	.drive-picker__item {
 		display: flex;
 		align-items: center;
 		gap: 0.4rem;
-		width: 100%;
+		padding: 0.3rem 0.5rem 0.3rem 2rem;
-		padding: 0.3rem 1rem 0.3rem 2rem;
 		background: transparent;
 		border: none;
 		color: var(--color-sidebar-text);
@@ -131,11 +146,26 @@
 	   carries the orange-tinted active bg — anything more on the child
 	   crowds the sidebar. Typography alone reads as "you are here" since
 	   only one drive can be active at a time. */
-	.drive-picker__item--active {
+	.drive-picker__row--active .drive-picker__item {
 		color: var(--color-sidebar-text-active);
 		font-weight: var(--weight-semibold);
 	}
 
+	.drive-picker__settings {
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		padding: 0.25rem 0.75rem;
+		color: var(--color-sidebar-text);
+		opacity: 0.6;
+		text-decoration: none;
+	}
+
+	.drive-picker__settings:hover {
+		opacity: 1;
+		color: var(--color-sidebar-text-hover);
+	}
+
 	.drive-picker__name {
 		flex: 1;
 		overflow: hidden;
@@ -143,8 +173,10 @@
 		white-space: nowrap;
 	}
 
-	/* Mini usage bar tucked under the row, indented to align with the name. */
+	/* Mini usage bar tucked under the row, indented to align with the name,
+	   spans both grid columns so the gear icon sits above its right edge. */
 	.drive-picker__bar {
+		grid-column: 1 / -1;
 		height: 3px;
 		background: var(--color-sidebar-storage-bar);
 		border-radius: 1.5px;

frontend/src/lib/stores/drives.svelte.ts

@@ -46,6 +46,12 @@ class DrivesStore {
 		if (!id) return null;
 		return this.drives.find((d) => d.root_folder_id === id) ?? null;
 	}
+
+	/** Drive whose own UUID matches `id`, or null. */
+	findById(id: string | null | undefined): Drive | null {
+		if (!id) return null;
+		return this.drives.find((d) => d.id === id) ?? null;
+	}
 }
 
 export const drives = new DrivesStore();

frontend/src/routes/config/drive/[uuid]/+page.svelte

@@ -0,0 +1,247 @@
+<script lang="ts">
+	import { page } from '$app/state';
+	import { onMount } from 'svelte';
+
+	import type { Drive } from '$lib/api/types';
+	import Icon from '$lib/icons/Icon.svelte';
+	import { t } from '$lib/i18n/index.svelte';
+	import { drives as drivesStore, driveIcon } from '$lib/stores/drives.svelte';
+	import { formatDate } from '$lib/utils/display';
+	import { formatBytes } from '$lib/utils/format';
+
+	const uuid = $derived(page.params.uuid ?? '');
+	const drive = $derived<Drive | null>(drivesStore.findById(uuid));
+
+	const kindLabel = $derived.by(() => {
+		if (!drive) return '';
+		return drive.kind === 'shared'
+			? t('drive.kind_shared', 'Shared drive')
+			: t('drive.kind_personal', 'Personal drive');
+	});
+
+	const storagePct = $derived.by(() => {
+		if (!drive || !drive.quota_bytes || drive.quota_bytes <= 0) return 0;
+		return Math.min(100, (drive.used_bytes / drive.quota_bytes) * 100);
+	});
+
+	const policyEntries = $derived.by(() => {
+		if (!drive) return [];
+		return Object.entries(drive.policies).map(([key, value]) => ({ key, value }));
+	});
+
+	function policyLabel(key: string): string {
+		// Known policy keys get a friendlier translated label; unknown keys
+		// surface verbatim so operators still see them (forward-compat).
+		switch (key) {
+			case 'forbid_public_links':
+				return t('drive.policy.forbid_public_links', 'Forbid public links');
+			case 'forbid_external_sharing':
+				return t('drive.policy.forbid_external_sharing', 'Forbid external sharing');
+			case 'forbid_sharing':
+				return t('drive.policy.forbid_sharing', 'Forbid sharing');
+			case 'forbid_cross_drive_move':
+				return t('drive.policy.forbid_cross_drive_move', 'Forbid cross-drive move');
+			case 'include_in_photo_index':
+				return t('drive.policy.include_in_photo_index', 'Include in photo index');
+			case 'forbid_music_index':
+				return t('drive.policy.forbid_music_index', 'Forbid music index');
+			default:
+				return key;
+		}
+	}
+
+	function policyValueDisplay(value: unknown): string {
+		if (value === true) return t('drive.policy.on', 'On');
+		if (value === false) return t('drive.policy.off', 'Off');
+		return String(value);
+	}
+
+	onMount(() => {
+		void drivesStore.load();
+	});
+</script>
+
+<div class="config-drive">
+	{#if !drivesStore.loaded}
+		<p class="muted">{t('common.loading', 'Loading…')}</p>
+	{:else if !drive}
+		<div class="card">
+			<h2>{t('drive.not_found_title', 'Drive not found')}</h2>
+			<p class="muted">
+				{t(
+					'drive.not_found_body',
+					"This drive doesn't exist or you don't have access to it."
+				)}
+			</p>
+			<a class="link" href="/files">{t('drive.back_to_files', 'Back to Files')}</a>
+		</div>
+	{:else}
+		<h1>
+			<Icon name={driveIcon(drive)} />
+			{drive.name}
+		</h1>
+
+		<div class="card">
+			<h2><Icon name="info-circle" /> {t('drive.info', 'Drive info')}</h2>
+			<dl class="info-grid">
+				<dt>{t('drive.field.kind', 'Kind')}</dt>
+				<dd>{kindLabel}</dd>
+
+				{#if drive.default_for_user}
+					<dt>{t('drive.field.default', 'Default')}</dt>
+					<dd>{t('drive.field.default_yes', 'This is your home drive')}</dd>
+				{/if}
+
+				<dt>{t('drive.field.created', 'Created')}</dt>
+				<dd>{formatDate(drive.created_at)}</dd>
+
+				<dt>{t('drive.field.updated', 'Last updated')}</dt>
+				<dd>{formatDate(drive.updated_at)}</dd>
+
+				<dt>{t('drive.field.id', 'Identifier')}</dt>
+				<dd class="mono">{drive.id}</dd>
+			</dl>
+		</div>
+
+		<div class="card">
+			<h2><Icon name="hdd" /> {t('drive.storage', 'Storage')}</h2>
+			<div class="storage-row">
+				<div class="storage-stat">
+					<div class="storage-stat__value">{formatBytes(drive.used_bytes)}</div>
+					<div class="storage-stat__label">{t('drive.used', 'Used')}</div>
+				</div>
+				<div class="storage-stat">
+					<div class="storage-stat__value">
+						{drive.quota_bytes && drive.quota_bytes > 0 ? formatBytes(drive.quota_bytes) : '∞'}
+					</div>
+					<div class="storage-stat__label">{t('drive.quota', 'Quota')}</div>
+				</div>
+				<div class="storage-stat">
+					<div class="storage-stat__value">
+						{drive.quota_bytes && drive.quota_bytes > 0 ? `${Math.round(storagePct)}%` : '—'}
+					</div>
+					<div class="storage-stat__label">{t('drive.usage', 'Usage')}</div>
+				</div>
+			</div>
+			{#if drive.quota_bytes && drive.quota_bytes > 0}
+				<div class="bar" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow={Math.round(storagePct)}>
+					<div class="bar__fill" style:width="{storagePct}%"></div>
+				</div>
+			{/if}
+		</div>
+
+		{#if policyEntries.length > 0}
+			<div class="card">
+				<h2><Icon name="shield-alt" /> {t('drive.policies', 'Policies')}</h2>
+				<dl class="info-grid">
+					{#each policyEntries as p (p.key)}
+						<dt>{policyLabel(p.key)}</dt>
+						<dd>{policyValueDisplay(p.value)}</dd>
+					{/each}
+				</dl>
+			</div>
+		{/if}
+	{/if}
+</div>
+
+<style>
+	.config-drive {
+		max-width: 800px;
+		margin: 0 auto;
+		padding: 1.5rem 1rem;
+		display: flex;
+		flex-direction: column;
+		gap: 1.25rem;
+	}
+
+	.config-drive h1 {
+		display: flex;
+		align-items: center;
+		gap: 0.5rem;
+		margin: 0;
+		font-size: 1.5rem;
+		color: var(--color-text-heading);
+	}
+
+	.card {
+		background: var(--color-bg-surface);
+		border: 1px solid var(--color-border-subtle);
+		border-radius: var(--radius-md);
+		padding: 1.25rem;
+	}
+
+	.card h2 {
+		display: flex;
+		align-items: center;
+		gap: 0.5rem;
+		margin: 0 0 1rem;
+		font-size: 1.05rem;
+		color: var(--color-text-heading);
+	}
+
+	.info-grid {
+		display: grid;
+		grid-template-columns: max-content 1fr;
+		gap: 0.5rem 1.5rem;
+		margin: 0;
+	}
+
+	.info-grid dt {
+		color: var(--color-text-muted);
+		font-size: 0.85rem;
+	}
+
+	.info-grid dd {
+		margin: 0;
+		color: var(--color-text);
+	}
+
+	.mono {
+		font-family: var(--font-mono);
+		font-size: 0.85rem;
+	}
+
+	.storage-row {
+		display: grid;
+		grid-template-columns: repeat(3, 1fr);
+		gap: 1rem;
+		margin-bottom: 1rem;
+	}
+
+	.storage-stat__value {
+		font-size: 1.1rem;
+		font-weight: var(--weight-semibold);
+		color: var(--color-text);
+	}
+
+	.storage-stat__label {
+		font-size: 0.8rem;
+		color: var(--color-text-muted);
+	}
+
+	.bar {
+		height: 6px;
+		background: var(--color-bg-muted);
+		border-radius: 3px;
+		overflow: hidden;
+	}
+
+	.bar__fill {
+		height: 100%;
+		background: var(--color-accent);
+		transition: width 200ms ease;
+	}
+
+	.muted {
+		color: var(--color-text-muted);
+	}
+
+	.link {
+		color: var(--color-accent);
+		text-decoration: none;
+	}
+
+	.link:hover {
+		text-decoration: underline;
+	}
+</style>