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/cache/redis-adapter.ts

@@ -0,0 +1,95 @@
+/**
+ * Redis Cache Adapter
+ * Decoupled Redis implementation
+ */
+
+import type { CacheAdapter, CacheConfig } from './interfaces';
+
+export class RedisCacheAdapter implements CacheAdapter {
+  private client: any = null;
+  private prefix: string;
+  private defaultTTL: number;
+  private redisUrl: string;
+
+  constructor(config: CacheConfig & { redisUrl?: string } = {}) {
+    this.prefix = config.prefix || 'mintel:';
+    this.defaultTTL = config.defaultTTL || 3600;
+    this.redisUrl = config.redisUrl || process.env.REDIS_URL || 'redis://localhost:6379';
+  }
+
+  private async init(): Promise<boolean> {
+    if (this.client !== null) return true;
+
+    try {
+      const Redis = await import('ioredis');
+      this.client = new Redis.default(this.redisUrl);
+      
+      this.client.on('error', (err: Error) => {
+        console.warn('Redis connection error:', err.message);
+        this.client = null;
+      });
+
+      this.client.on('connect', () => {
+        console.log('✅ Redis connected');
+      });
+
+      // Test connection
+      await this.client.set(this.prefix + '__test__', 'ok', 'EX', 1);
+      return true;
+    } catch (error) {
+      console.warn('Redis unavailable:', error);
+      this.client = null;
+      return false;
+    }
+  }
+
+  async get<T>(key: string): Promise<T | null> {
+    const available = await this.init();
+    if (!available || !this.client) return null;
+
+    try {
+      const data = await this.client.get(this.prefix + key);
+      return data ? JSON.parse(data) : null;
+    } catch (error) {
+      console.warn('Redis get error:', error);
+      return null;
+    }
+  }
+
+  async set<T>(key: string, value: T, ttl?: number): Promise<void> {
+    const available = await this.init();
+    if (!available || !this.client) return;
+
+    try {
+      const finalTTL = ttl || this.defaultTTL;
+      await this.client.setex(this.prefix + key, finalTTL, JSON.stringify(value));
+    } catch (error) {
+      console.warn('Redis set error:', error);
+    }
+  }
+
+  async del(key: string): Promise<void> {
+    const available = await this.init();
+    if (!available || !this.client) return;
+
+    try {
+      await this.client.del(this.prefix + key);
+    } catch (error) {
+      console.warn('Redis del error:', error);
+    }
+  }
+
+  async clear(): Promise<void> {
+    const available = await this.init();
+    if (!available || !this.client) return;
+
+    try {
+      const keys = await this.client.keys(this.prefix + '*');
+      if (keys.length > 0) {
+        await this.client.del(...keys);
+      }
+    } catch (error) {
+      console.warn('Redis clear error:', error);
+    }
+  }
+}