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/utils/constants.ts

@@ -35,7 +35,15 @@ export const WidgetType = {
 	BOOKMARK: 'bookmark',
 	NOTE: 'note',
 	EMBED: 'embed',
-	STATUS: 'status'
+	STATUS: 'status',
+	CLOCK: 'clock',
+	SYSTEM_STATS: 'system_stats',
+	RSS: 'rss',
+	CALENDAR: 'calendar',
+	MARKDOWN: 'markdown',
+	METRIC: 'metric',
+	LINK_GROUP: 'link_group',
+	CAMERA: 'camera'
 } as const;
 export type WidgetType = (typeof WidgetType)[keyof typeof WidgetType];
 
@@ -84,6 +92,62 @@ export const HealthcheckMethod = {
 } as const;
 export type HealthcheckMethod = (typeof HealthcheckMethod)[keyof typeof HealthcheckMethod];
 
+// Card sizes
+export const CardSize = {
+	COMPACT: 'compact',
+	MEDIUM: 'medium',
+	LARGE: 'large'
+} as const;
+export type CardSize = (typeof CardSize)[keyof typeof CardSize];
+
+// Notification channel types
+export const NotificationType = {
+	DISCORD: 'discord',
+	SLACK: 'slack',
+	TELEGRAM: 'telegram',
+	HTTP: 'http'
+} as const;
+export type NotificationType = (typeof NotificationType)[keyof typeof NotificationType];
+
+// Notification events
+export const NotificationEvent = {
+	APP_ONLINE: 'app_online',
+	APP_OFFLINE: 'app_offline',
+	APP_DEGRADED: 'app_degraded'
+} as const;
+export type NotificationEvent = (typeof NotificationEvent)[keyof typeof NotificationEvent];
+
+// API token scopes
+export const ApiTokenScope = {
+	READ: 'read',
+	WRITE: 'write',
+	ADMIN: 'admin'
+} as const;
+export type ApiTokenScope = (typeof ApiTokenScope)[keyof typeof ApiTokenScope];
+
+// Audit log actions
+export const AuditAction = {
+	USER_CREATED: 'user_created',
+	USER_DELETED: 'user_deleted',
+	USER_UPDATED: 'user_updated',
+	BOARD_CREATED: 'board_created',
+	BOARD_DELETED: 'board_deleted',
+	APP_CREATED: 'app_created',
+	APP_DELETED: 'app_deleted',
+	SETTINGS_UPDATED: 'settings_updated',
+	IMPORT: 'import',
+	EXPORT: 'export'
+} as const;
+export type AuditAction = (typeof AuditAction)[keyof typeof AuditAction];
+
+// Background types for board wallpapers
+export const BackgroundType = {
+	NONE: 'none',
+	COLOR: 'color',
+	WALLPAPER: 'wallpaper'
+} as const;
+export type BackgroundType = (typeof BackgroundType)[keyof typeof BackgroundType];
+
 // Defaults
 export const DEFAULTS = {
 	HEALTHCHECK_INTERVAL: 300,