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/server/services/onboardingService.ts

@@ -0,0 +1,73 @@
+import { prisma } from '../prisma.js';
+import { DEFAULTS } from '$lib/utils/constants.js';
+
+/**
+ * Check whether the onboarding wizard should be shown.
+ * Returns true if no users exist OR SystemSettings.onboardingComplete is false.
+ */
+export async function isOnboardingNeeded(): Promise<boolean> {
+	const userCount = await prisma.user.count();
+	if (userCount === 0) {
+		return true;
+	}
+
+	try {
+		const settings = await prisma.systemSettings.findUnique({
+			where: { id: DEFAULTS.SYSTEM_SETTINGS_ID },
+			select: { onboardingComplete: true }
+		});
+
+		// If no settings record exists yet, onboarding is needed
+		if (!settings) {
+			return true;
+		}
+
+		return !settings.onboardingComplete;
+	} catch {
+		// If SystemSettings table doesn't exist yet, onboarding is needed
+		return true;
+	}
+}
+
+/**
+ * Mark onboarding as complete in SystemSettings.
+ */
+export async function completeOnboarding(): Promise<void> {
+	await prisma.systemSettings.upsert({
+		where: { id: DEFAULTS.SYSTEM_SETTINGS_ID },
+		update: { onboardingComplete: true },
+		create: {
+			id: DEFAULTS.SYSTEM_SETTINGS_ID,
+			onboardingComplete: true
+		}
+	});
+}
+
+/**
+ * Get the current onboarding status.
+ */
+export async function getOnboardingStatus(): Promise<{
+	readonly needed: boolean;
+	readonly hasUsers: boolean;
+	readonly onboardingComplete: boolean;
+}> {
+	const userCount = await prisma.user.count();
+	const hasUsers = userCount > 0;
+
+	let onboardingComplete = false;
+	try {
+		const settings = await prisma.systemSettings.findUnique({
+			where: { id: DEFAULTS.SYSTEM_SETTINGS_ID },
+			select: { onboardingComplete: true }
+		});
+		onboardingComplete = settings?.onboardingComplete ?? false;
+	} catch {
+		onboardingComplete = false;
+	}
+
+	return {
+		needed: !hasUsers || !onboardingComplete,
+		hasUsers,
+		onboardingComplete
+	};
+}