feat: deferred dispatch, release-check provider, settings polish

- Defer quiet-hours dispatches into new deferred_dispatch table; drain
  job + periodic catch-up scan re-fire at window end with coalescing on
  (link, event_type, collection_id).
- Add ON DELETE SET NULL migration on event_log_id and partial unique
  index on (link_id, collection_id, event_type) WHERE status='pending'.
- Add release-check provider abstraction (Gitea/GitHub) with SSRF-safe
  URL validation, settings UI cassette, and scheduled polling.
- Replace importlib-only version lookup with version.py helper that
  prefers the higher of installed metadata vs source pyproject so stale
  editable dev installs stop misreporting.
- Aurora frontend polish: MetaStrip component, ReleaseCassette,
  EventDetailModal expansion, and i18n additions.

frontend/src/routes/command-template-configs/+page.svelte

@@ -27,6 +27,7 @@
 	import { highlightFromUrl } from '$lib/highlight';
 	import { globalProviderFilter } from '$lib/stores/provider-filter.svelte';
 	import { getDescriptor } from '$lib/providers';
+	import MetaStrip, { type MetaTile } from '$lib/components/MetaStrip.svelte';
 
 	interface CmdTemplateConfig {
 		id: number;
@@ -262,6 +263,44 @@
 		}
 	}
 
+	function cmdTemplateConfigTiles(config: CmdTemplateConfig): MetaTile[] {
+		const tiles: MetaTile[] = [];
+		tiles.push({
+			icon: 'mdiServer',
+			label: config.provider_type,
+			tone: 'lavender',
+			mono: true,
+		});
+		const slotCount = Object.keys(config.slots || {}).length;
+		tiles.push({
+			icon: 'mdiViewGridOutline',
+			value: String(slotCount),
+			label: t('templateConfig.slots'),
+			tone: slotCount > 0 ? 'sky' : 'default',
+		});
+		const locales = new Set<string>();
+		for (const s of Object.values(config.slots || {})) {
+			for (const loc of Object.keys(s || {})) locales.add(loc);
+		}
+		if (locales.size > 0) {
+			tiles.push({
+				icon: 'mdiTranslate',
+				value: String(locales.size),
+				label: locales.size === 1 ? t('locales.label') : t('locales.labelPlural'),
+				hint: [...locales].sort().join(', '),
+				tone: 'mint',
+			});
+		}
+		if (config.user_id === 0) {
+			tiles.push({
+				icon: 'mdiShieldStarOutline',
+				label: t('common.system'),
+				tone: 'orchid',
+			});
+		}
+		return tiles;
+	}
+
 	function openNew() {
 		form = defaultForm();
 		const typesWithCmdSlots = providerTypes.filter(t => (allCapabilities[t]?.command_slots?.length || 0) > 0);
@@ -587,25 +626,25 @@
 		<EmptyState icon="mdiFilterOff" message={t('common.noFilterResults')} />
 	</Card>
 {:else}
-	<div class="space-y-3 stagger-children">
+	<div class="list-stack stagger-children">
 		{#each configs as config}
 			<Card hover entityId={config.id}>
-				<div class="flex items-start justify-between">
-					<div class="flex-1">
-						<div class="flex items-center gap-2">
-							<span style="color: var(--color-primary);"><MdiIcon name={config.icon || 'mdiConsoleLine'} size={20} /></span>
-							<p class="font-medium">{config.name}</p>
-							<span class="text-xs px-1.5 py-0.5 rounded bg-[var(--color-muted)] text-[var(--color-muted-foreground)]">{config.provider_type}</span>
+				<div class="list-row">
+					<div class="list-row__identity">
+						<div class="flex items-center gap-2 min-w-0">
+							<span style="color: var(--color-primary);" class="shrink-0"><MdiIcon name={config.icon || 'mdiConsoleLine'} size={20} /></span>
+							<p class="font-medium truncate">{config.name}</p>
+							<span class="text-xs px-1.5 py-0.5 rounded bg-[var(--color-muted)] text-[var(--color-muted-foreground)] shrink-0">{config.provider_type}</span>
 							{#if config.user_id === 0}
-								<span class="text-xs px-1.5 py-0.5 rounded bg-[var(--color-muted)] text-[var(--color-muted-foreground)]">{t('common.system')}</span>
+								<span class="text-xs px-1.5 py-0.5 rounded bg-[var(--color-muted)] text-[var(--color-muted-foreground)] shrink-0">{t('common.system')}</span>
 							{/if}
-							<span class="text-xs px-1.5 py-0.5 rounded bg-[var(--color-muted)] text-[var(--color-muted-foreground)]">{Object.keys(config.slots).length} {t('templateConfig.slots')}</span>
 						</div>
 						{#if config.description}
-							<p class="text-sm text-[var(--color-muted-foreground)] mt-1">{config.description}</p>
+							<p class="text-sm text-[var(--color-muted-foreground)] mt-1 list-row__secondary">{config.description}</p>
 						{/if}
 					</div>
-					<div class="flex items-center gap-1 ml-4">
+					<MetaStrip tiles={cmdTemplateConfigTiles(config)} />
+					<div class="list-row__actions">
 						<IconButton icon="mdiContentCopy" title={t('common.clone')} onclick={() => clone(config)} />
 						<IconButton icon="mdiPencil" title={t('common.edit')} onclick={() => edit(config)} />
 						<IconButton icon="mdiDelete" title={t('common.delete')} onclick={() => remove(config.id)} variant="danger" />