feat: Phases 4-7 — Full Feature Expansion (26 features)

Phase 4 — New Widget Types:
- Clock/Weather, System Stats, RSS/Feed, Calendar, Markdown,
  Metric/Counter, Link Group, Camera/Stream widgets
- Backend services with caching for each data source
- Full creation form with dynamic config fields per type

Phase 5 — Visual & Styling Enhancements:
- Glassmorphism card style (solid/glass/outline)
- Board-level themes with per-board hue/saturation
- Animated SVG status rings replacing static dots
- Card size options (compact/medium/large)
- Custom CSS injection (admin + per-board, sanitized)
- Wallpaper backgrounds with blur/overlay/parallax

Phase 6 — Functional Features:
- Favorites bar with drag-and-drop reordering
- Recent apps tracking with privacy toggle
- Uptime dashboard page (/status, guest-accessible)
- Notifications system (Discord/Slack/Telegram/HTTP webhooks)
- App tags with filtering in board view
- Multi-URL app cards with expandable sub-links
- Personal API tokens with scoped permissions
- Audit log with retention and admin viewer

Phase 7 — Quality of Life:
- Onboarding wizard (5-step first-launch setup)
- App URL health preview with favicon/title detection
- Board templates (4 built-in + custom import/export)
- Keyboard shortcut overlay (j/k nav, 1-9 boards, ? help)

212 files changed, 15641 insertions, 980 deletions.
Build, lint, type check, and 222 tests all pass.

src/lib/components/section/Section.svelte

@@ -20,12 +20,15 @@
 		} | null;
 	}
 
+	import type { CardSize } from '$lib/utils/constants.js';
+
 	interface SectionData {
 		id: string;
 		title: string;
 		icon: string | null;
 		order: number;
 		isExpandedByDefault: boolean;
+		cardSize?: string | null;
 		widgets: WidgetData[];
 	}
 
@@ -42,9 +45,15 @@
 	interface Props {
 		section: SectionData;
 		allApps?: AppData[];
+		boardCardSize?: CardSize;
 	}
 
-	let { section, allApps = [] }: Props = $props();
+	let { section, allApps = [], boardCardSize = 'medium' }: Props = $props();
+
+	// Section-level cardSize overrides board-level
+	const effectiveCardSize = $derived<CardSize>(
+		(section.cardSize as CardSize) ?? boardCardSize
+	);
 
 	let expanded = $state(section.isExpandedByDefault);
 </script>
@@ -59,7 +68,7 @@
 
 	<SectionCollapsible {expanded}>
 		<div class="px-4 pb-4">
-			<WidgetGrid widgets={section.widgets} {allApps} />
+			<WidgetGrid widgets={section.widgets} {allApps} cardSize={effectiveCardSize} />
 		</div>
 	</SectionCollapsible>
 </div>