Fix TypeScript compilation errors across P3-P6

- jwt.sign: explicit SignOptions cast for expiresIn (all 4 products)
- ioredis: use named import { Redis } instead of default (P4, P6)
- P4 catalog/service: fix import paths for aws-scanner and github-scanner
- P4 discovery: pass pool to ScheduledDiscovery constructor
- P6 agent-bridge: add explicit types for Redis message callback params
- All 4 Node products now compile cleanly with tsc --noEmit

products/05-aws-cost-anomaly/src/auth/middleware.ts

@@ -87,7 +87,7 @@ export function requireRole(req: FastifyRequest, reply: FastifyReply, minRole: A
 }
 
 export function signToken(payload: AuthPayload, secret: string, expiresIn = '24h'): string {
-  return jwt.sign(payload, secret, { expiresIn });
+  return jwt.sign(payload, secret, { expiresIn } as jwt.SignOptions);
 }
 
 // --- Password hashing (scrypt — no native bcrypt dep needed) ---