feat(redesign): roll subpage hero across all pages + Aurora Button + JinjaEditor + pulse fix

Big batch — every secondary page now wears the same glass-card hero
that landed on Providers earlier:

- notification-trackers, tracking-configs, template-configs
- command-trackers, command-configs, command-template-configs
- targets (with active-tab title), actions
- bots (telegram / email / matrix tabs)
- settings, settings/backup, users

Each page picks an italic-em emphasis word, an editorial crumb (e.g.
'Routing · Notification', 'Operators · Bots', 'System · Maintenance'),
a count meter, and entity-specific status pills derived from live
data: 'X armed / Y paused' for trackers and actions, 'X types' for
configs/templates, 'X channels' or '$N receivers' for targets.

Other changes in this commit:

- Button.svelte: redesigned. Primary variant becomes a real Aurora
  CTA — gradient lavender → orchid pill, 40px tall md / 34px sm,
  inset highlight, lift + glow on hover. Secondary, danger, ghost
  variants reworked to match. The 'Add <Type>' button on every page
  now reads as the page's primary action instead of a flat lavender
  rectangle.
- JinjaEditor: overrode oneDark's hardcoded background with
  !important so the editor surface picks up var(--color-input-bg).
  Gutters / scroller / selection / autocomplete tooltip all match
  Aurora glass tokens now. Template editors stop visually clashing
  with the surrounding panel.
- Aurora pulse dot: rewritten as a self-contained box-shadow glow
  pulse (no transform, no pseudo-element). The dot's bounding box is
  now stable so ancestors with overflow:hidden can never clip the
  visible dot — only the (decorative) outer glow halo. Fixes the
  'half-moon clipping' on the dashboard 'On watch' deck.
- topbar-action.svelte.ts left in tree but unused (topbar CTA was
  reverted per your call). Will clean up in a later commit.
- Form input baseline styling moved into app.css (rounded 0.625rem,
  glass background, hover/focus rings) so untouched filter inputs
  on the per-type pages stop looking out of place.

i18n: emphasis / countLabel / armed / paused / receiver / receivers
/ channelsCount keys added across en + ru.

Build clean: 0 errors, 61 pre-existing a11y warnings unchanged.

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

@@ -6,6 +6,7 @@
 	import { t, getLocale } from '$lib/i18n';
 	import { targetsCache, telegramBotsCache, emailBotsCache, matrixBotsCache } from '$lib/stores/caches.svelte';
 	import PageHeader from '$lib/components/PageHeader.svelte';
+	import Button from '$lib/components/Button.svelte';
 	import Card from '$lib/components/Card.svelte';
 	import Loading from '$lib/components/Loading.svelte';
 	import MdiIcon from '$lib/components/MdiIcon.svelte';
@@ -165,6 +166,20 @@
 	// ── Data loading ──
 
 	onMount(load);
+
+	const headerPills = $derived.by(() => {
+		const pills: Array<{ label: string; tone: 'mint' | 'sky' | 'orchid' }> = [];
+		if (activeType) {
+			// Tab-filtered: show count of receivers for the active type only.
+			const total = targets.reduce((acc, t) => acc + (t.receiver_count || 0), 0);
+			if (total > 0) pills.push({ label: `${total} ${total === 1 ? t('targets.receiver') : t('targets.receivers')}`, tone: 'mint' });
+		} else {
+			const types = new Set(targets.map(t => t.type)).size;
+			if (types > 0) pills.push({ label: `${types} ${t('targets.channelsCount')}`, tone: 'sky' });
+		}
+		return pills;
+	});
+
 	async function load() {
 		try {
 			await Promise.all([
@@ -418,11 +433,18 @@
 	}
 </script>
 
-<PageHeader title={activeType ? `${t('targets.title')} — ${activeType.charAt(0).toUpperCase() + activeType.slice(1)}` : t('targets.title')} description={activeType ? t(TYPE_DESC_KEYS[activeType]) : t('targets.description')}>
-	<button onclick={() => { showForm ? (showForm = false, editing = null) : openNew(); }}
-		class="px-3 py-1.5 bg-[var(--color-primary)] text-[var(--color-primary-foreground)] rounded-md text-sm font-medium hover:opacity-90">
+<PageHeader
+	title={activeType ? activeType.charAt(0).toUpperCase() + activeType.slice(1) : t('targets.title')}
+	emphasis={activeType ? t('targets.titleEmphasis') : t('targets.titleEmphasisAll')}
+	description={activeType ? t(TYPE_DESC_KEYS[activeType]) : t('targets.description')}
+	crumb="Routing · Targets"
+	count={targets.length}
+	countLabel={t('dashboard.targetsShort')}
+	pills={headerPills}
+>
+	<Button size="sm" onclick={() => { showForm ? (showForm = false, editing = null) : openNew(); }}>
 		{showForm ? t('targets.cancel') : t('targets.addTarget')}
-	</button>
+	</Button>
 </PageHeader>
 
 {#if !loaded}<Loading />{:else}