Fix rate limiting: handle Redis unavailability gracefully to prevent email failures

src/lib/rate-limit.ts

@@ -39,6 +39,7 @@ export class RateLimit {
   }
 
   async check(config: RateLimitConfig): Promise<RateLimitResult> {
+    try {
       const ip = await this.getIP()
       const key = this.getKey(ip)
       const now = Math.floor(Date.now() / 1000)
@@ -58,6 +59,17 @@ export class RateLimit {
         remaining,
         reset: windowStart + config.interval
       }
+    } catch (error) {
+      console.warn('Redis unavailable, allowing request (rate limiting disabled):', error)
+      // Fallback: allow the request when Redis is unavailable
+      // TODO: Fix Redis connection or create new instance
+      return {
+        success: true,
+        limit: config.limit,
+        remaining: config.limit - 1,
+        reset: Math.floor(Date.now() / 1000) + config.interval
+      }
+    }
   }
 }