Design Agent Roles and LangGraph Workflow

Based on the Dash0 headline and the goal of autonomous incident response, define 3-5 distinct agent roles (e.g., Monitor, Analyze, Remediate). For each role, describe its responsibilities, required tools, and how it will communicate with other agents. Then, sketch out a LangGraph-based workflow (state, nodes, edges) that describes the flow of information and control from incident detection to resolution. Consider states for 'incident_detected', 'analysis_in_progress', 'remediation_pending', 'resolved'.