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/board/Board.svelte

@@ -36,12 +36,15 @@
 		statuses: Array<{ status: string; responseTime: number | null }>;
 	}
 
+	import type { CardSize } from '$lib/utils/constants.js';
+
 	interface Props {
 		sections: SectionData[];
 		allApps?: AppData[];
+		boardCardSize?: CardSize;
 	}
 
-	let { sections, allApps = [] }: Props = $props();
+	let { sections, allApps = [], boardCardSize = 'medium' }: Props = $props();
 </script>
 
 <div class="space-y-6">
@@ -51,7 +54,7 @@
 		</div>
 	{:else}
 		{#each sections as section (section.id)}
-			<Section {section} {allApps} />
+			<Section {section} {allApps} {boardCardSize} />
 		{/each}
 	{/if}
 </div>