feat: telegram commands, app settings, bot polling, webhook handling, UI improvements

Adds telegram bot command system with 13 commands (search, latest, random, etc.),
webhook/polling handlers, rate limiting, app settings page, and various UI/UX
improvements across all entity pages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/routes/targets/+page.svelte

@@ -8,14 +8,16 @@
 	import Loading from '$lib/components/Loading.svelte';
 	import IconPicker from '$lib/components/IconPicker.svelte';
 	import MdiIcon from '$lib/components/MdiIcon.svelte';
+	import EmptyState from '$lib/components/EmptyState.svelte';
 	import ConfirmModal from '$lib/components/ConfirmModal.svelte';
 	import Hint from '$lib/components/Hint.svelte';
 	import IconButton from '$lib/components/IconButton.svelte';
 	import { snackSuccess, snackError } from '$lib/stores/snackbar.svelte';
+	import type { NotificationTarget, TelegramBot, TelegramChat } from '$lib/types';
 
-	let targets = $state<any[]>([]);
-	let bots = $state<any[]>([]);
-	let botChats = $state<Record<number, any[]>>({});
+	let targets = $state<NotificationTarget[]>([]);
+	let bots = $state<TelegramBot[]>([]);
+	let botChats = $state<Record<number, TelegramChat[]>>({});
 	let showForm = $state(false);
 	let editing = $state<number | null>(null);
 	let formType = $state<'telegram' | 'webhook'>('telegram');
@@ -29,7 +31,7 @@
 	let submitting = $state(false);
 	let loadError = $state('');
 	let showTelegramSettings = $state(false);
-	let confirmDelete = $state<any>(null);
+	let confirmDelete = $state<NotificationTarget | null>(null);
 
 	onMount(load);
 	async function load() {
@@ -223,10 +225,7 @@
 
 {#if targets.length === 0 && !showForm}
 	<Card>
-		<div class="flex flex-col items-center py-8 gap-3" style="color: var(--color-muted-foreground);">
-			<div style="opacity: 0.4;"><MdiIcon name="mdiTarget" size={40} /></div>
-			<p class="text-sm">{t('targets.noTargets')}</p>
-		</div>
+		<EmptyState icon="mdiTarget" message={t('targets.noTargets')} />
 	</Card>
 {:else}
 	<div class="space-y-3 stagger-children">