chore: overhaul infrastructure and integrate @mintel packages

- Restructure to pnpm monorepo (site moved to apps/web)
- Integrate @mintel/tsconfig, @mintel/eslint-config, @mintel/husky-config
- Implement Docker service architecture (Varnish, Directus, Gatekeeper)
- Setup environment-aware Gitea Actions deployment

apps/web/src/utils/analytics/index.ts

@@ -0,0 +1,107 @@
+/**
+ * Analytics Service - Main entry point with DI
+ * Clean constructor-based dependency injection
+ */
+
+import type { AnalyticsAdapter, AnalyticsEvent, AnalyticsConfig } from './interfaces';
+import { PlausibleAdapter } from './plausible-adapter';
+import { UmamiAdapter, type UmamiConfig } from './umami-adapter';
+
+export class AnalyticsService {
+  private adapter: AnalyticsAdapter;
+
+  /**
+   * Create analytics service with dependency injection
+   * @param adapter - Analytics adapter implementation
+   */
+  constructor(adapter: AnalyticsAdapter) {
+    this.adapter = adapter;
+  }
+
+  getAdapter(): AnalyticsAdapter {
+    return this.adapter;
+  }
+
+  async track(event: AnalyticsEvent): Promise<void> {
+    return this.adapter.track(event);
+  }
+
+  async page(path: string, props?: Record<string, any>): Promise<void> {
+    if (this.adapter.page) {
+      return this.adapter.page(path, props);
+    }
+    return this.track({ name: 'Pageview', props: { path, ...props } });
+  }
+
+  async identify(userId: string, traits?: Record<string, any>): Promise<void> {
+    if (this.adapter.identify) {
+      return this.adapter.identify(userId, traits);
+    }
+  }
+
+  // Convenience methods
+  async trackEvent(name: string, props?: Record<string, any>): Promise<void> {
+    return this.track({ name, props });
+  }
+
+  async trackOutboundLink(url: string, text: string): Promise<void> {
+    return this.track({
+      name: 'Outbound Link',
+      props: { url, text }
+    });
+  }
+
+  async trackSearch(query: string, path: string): Promise<void> {
+    return this.track({
+      name: 'Search',
+      props: { query, path }
+    });
+  }
+
+  async trackPageLoad(loadTime: number, path: string, userAgent: string): Promise<void> {
+    return this.track({
+      name: 'Page Load',
+      props: { loadTime: Math.round(loadTime), path, userAgent }
+    });
+  }
+}
+
+// Factory functions
+export function createPlausibleAnalytics(config: AnalyticsConfig): AnalyticsService {
+  return new AnalyticsService(new PlausibleAdapter(config));
+}
+
+export function createUmamiAnalytics(config: UmamiConfig): AnalyticsService {
+  return new AnalyticsService(new UmamiAdapter(config));
+}
+
+// Default singleton
+let defaultAnalytics: AnalyticsService | null = null;
+
+export function getDefaultAnalytics(): AnalyticsService {
+  if (!defaultAnalytics) {
+    const provider = process.env.NEXT_PUBLIC_ANALYTICS_PROVIDER || 'plausible';
+
+    if (provider === 'umami') {
+      defaultAnalytics = createUmamiAnalytics({
+        websiteId: process.env.NEXT_PUBLIC_UMAMI_WEBSITE_ID || '',
+        hostUrl: process.env.NEXT_PUBLIC_UMAMI_HOST_URL,
+      });
+    } else {
+      defaultAnalytics = createPlausibleAnalytics({
+        domain: process.env.NEXT_PUBLIC_PLAUSIBLE_DOMAIN || 'mintel.me',
+        scriptUrl: process.env.NEXT_PUBLIC_PLAUSIBLE_SCRIPT_URL || 'https://plausible.yourdomain.com/js/script.js'
+      });
+    }
+  }
+  return defaultAnalytics;
+}
+
+// Convenience function
+export async function track(name: string, props?: Record<string, any>): Promise<void> {
+  return getDefaultAnalytics().trackEvent(name, props);
+}
+
+// Re-export for advanced usage
+export type { AnalyticsAdapter, AnalyticsEvent, AnalyticsConfig };
+export { PlausibleAdapter };