graph TD USER((👤 User)) -- "1. Transaction" --> BUS{📨 Redpanda} BUS -- "2. Stream" --> BRAIN[🧠 Fraud Processor] BRAIN -- "3. Pull History" --> KITCHEN[(🍽️ Feast Store)] KITCHEN -- "4. Features" --> BRAIN BRAIN -- "5. Drift Check" --> DRIFT{📈 Monitor} DRIFT -- "6. Score" --> BRAIN BRAIN -- "7. Predict" --> JUDGE{⚖️ Decision} JUDGE -- "ALLOW" --> OK[✅ Approved] JUDGE -- "BLOCK" --> NO[🛑 Blocked] JUDGE -- "REVIEW" --> QM[🔍 Review] classDef active stroke:#4ade80,stroke-width:6px,fill:#bcf5d4;