Spent today making the predictive maintenance copilot more robust — guardrails, input validation, prompt-injection protection, error handling, response validation, rate limiting, and RAG safety. Also refined the AI diagnosis and Engineer Chat with stronger grounding around real machine telemetry, ML predictions, anomaly evidence, and maintenance knowledge. The reliability work isn't always visible, but it matters just as much as the AI features. Decoding Data ScienceMohammad Arshad #BuildInPublic#PredictiveMaintenance#IndustrialAI#AIAgents#AIChallenge#BuildWithAI