Mention @ai-kassandra-performance-test on a GitLab MR. The agent reads the diff to find new or changed endpoints, retrieves relevant schemas via OpenAPI GraphRAG (~95% input token reduction), scans for performance anti-patterns (N+1 queries, unbounded SELECTs, missing pagination), generates a k6 script with per-endpoint SLO thresholds, runs it against the live app, and posts a performance report with Mermaid charts as an MR comment. One AGENTS.md config per project, no CI YAML changes. Built on the GitLab Duo Workflow Platform for the GitLab AI Hackathon 2026.