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/bots/TelegramBotTab.svelte

@@ -16,6 +16,7 @@
 	import { snackSuccess, snackError, snackInfo } from '$lib/stores/snackbar.svelte';
 	import Button from '$lib/components/Button.svelte';
 	import ErrorBanner from '$lib/components/ErrorBanner.svelte';
+	import MetaStrip, { type MetaTile } from '$lib/components/MetaStrip.svelte';
 	import type { TelegramBot, TelegramChat } from '$lib/types';
 
 	interface CommandTrackerSummary { id: number; name: string; icon?: string; enabled: boolean }
@@ -60,6 +61,36 @@
 	let botListenerStatus = $state<Record<number, CommandTrackerSummary[]>>({});
 	let botListenerLoading = $state<Record<number, boolean>>({});
 
+	function telegramBotTiles(bot: TelegramBot): MetaTile[] {
+		const tiles: MetaTile[] = [];
+		const mode = bot.update_mode || 'none';
+		const modeTone: MetaTile['tone'] = mode === 'webhook' ? 'lavender' : mode === 'polling' ? 'mint' : 'default';
+		const modeLabel = mode === 'webhook' ? t('telegramBot.webhook') : mode === 'polling' ? t('telegramBot.polling') : t('telegramBot.none');
+		tiles.push({
+			icon: mode === 'webhook' ? 'mdiWebhook' : mode === 'polling' ? 'mdiSync' : 'mdiPowerOff',
+			label: modeLabel,
+			tone: modeTone,
+		});
+		if (bot.bot_username) {
+			tiles.push({
+				icon: 'mdiAt',
+				label: bot.bot_username,
+				tone: 'sky',
+				mono: true,
+			});
+		}
+		const chatCount = chats[bot.id]?.length;
+		if (chatCount !== undefined) {
+			tiles.push({
+				icon: 'mdiChat',
+				value: String(chatCount),
+				label: t('telegramBot.chats'),
+				tone: chatCount > 0 ? 'orchid' : 'default',
+			});
+		}
+		return tiles;
+	}
+
 	function openNew() { form = { name: '', icon: '', token: '' }; nameManuallyEdited = false; editing = null; showForm = true; }
 	function editBot(bot: TelegramBot) { form = { name: bot.name, icon: bot.icon || '', token: '' }; nameManuallyEdited = true; editing = bot.id; showForm = true; }
 
@@ -343,18 +374,19 @@
 		<EmptyState icon="mdiRobot" message={t('telegramBot.noBots')} />
 	</Card>
 {:else}
-	<div class="space-y-3 stagger-children">
+	<div class="list-stack stagger-children">
 		{#each bots as bot}
 			<Card hover entityId={bot.id}>
-				<div class="flex items-center justify-between gap-2 flex-wrap">
-					<div class="min-w-0">
-						<div class="flex items-center gap-2 flex-wrap">
-							<span style="color: var(--color-primary);"><MdiIcon name={bot.icon || 'mdiRobot'} size={20} /></span>
-							<p class="font-medium">{bot.name}</p>
+				<div class="list-row">
+					<div class="list-row__identity">
+						<div class="flex items-center gap-2 flex-wrap min-w-0">
+							<span style="color: var(--color-primary);" class="shrink-0"><MdiIcon name={bot.icon || 'mdiRobot'} size={20} /></span>
+							<p class="font-medium truncate">{bot.name}</p>
 							{#if bot.bot_username}
-								<span class="text-xs text-[var(--color-muted-foreground)]">@{bot.bot_username}</span>
+								<span class="text-xs text-[var(--color-muted-foreground)] shrink-0">@{bot.bot_username}</span>
 							{/if}
-							<!-- Mode badge -->
+						</div>
+						<div class="list-row__secondary mt-0.5 flex items-center gap-2 flex-wrap">
 							<span class="text-xs px-1.5 py-0.5 rounded font-mono {(bot.update_mode || 'none') === 'webhook'
 								? 'bg-[var(--color-primary)]/10 text-[var(--color-primary)]'
 								: (bot.update_mode || 'none') === 'polling'
@@ -362,10 +394,11 @@
 									: 'bg-[var(--color-muted)] text-[var(--color-muted-foreground)]'}">
 								{(bot.update_mode || 'none') === 'webhook' ? t('telegramBot.webhook') : (bot.update_mode || 'none') === 'polling' ? t('telegramBot.polling') : t('telegramBot.none')}
 							</span>
+							<p class="text-xs text-[var(--color-muted-foreground)] font-mono">{bot.token_preview}</p>
 						</div>
-						<p class="text-xs text-[var(--color-muted-foreground)] font-mono">{bot.token_preview}</p>
 					</div>
-					<div class="flex items-center gap-1 flex-shrink-0 flex-wrap">
+					<MetaStrip tiles={telegramBotTiles(bot)} />
+					<div class="list-row__actions flex-wrap justify-end">
 						<IconButton icon="mdiPencil" title={t('common.edit')} onclick={() => editBot(bot)} />
 						<button onclick={() => toggleSection(bot.id, 'chats')}
 							disabled={chatsLoading[bot.id]}