feat: integrate MLflow model registry, DagsHub metrics tracking, and local Grafana observability stack

fix(lint): resolve ruff code formatting and unused import warnings in tests

feat(ci): configure CI, Hugging Face deploy, and CML model training workflows

feat(k8s): deploy api to kind multinode cluster and verify with adversarial red-teaming simulator

feat(phase12): Supabase persistent store + Row Level Security

feat(phase11): Langfuse LLM tracing + Constitutional Policy Engine

feat(phase10): FastAPI REST API + Dockerfile + SSE streaming

feat: initial commit — CustomerCore Phases 1-9 complete