## Problem There are multiple ways to spin up the GKG local dev stack (Tilt/K8s, gkg-dev.sh, mise run dev), which creates confusion for new engineers, makes documentation harder to maintain, and blocks onboarding for cross-team contributors (Ankit Panchal, Jerome's team). Caproni was evaluated but is not ready for compiled languages like Rust. ## Proposal Remove Tilt as a local development option and make `mise run dev` the only supported path. This approach builds Rust code natively and connects to GDK services (NATS, ClickHouse, Siphon, PostgreSQL, Gitaly) without requiring a K8s cluster, Docker image builds, or Helm chart syncing. Discussed and agreed upon in the April 14, 2026 Knowledge Graph Weekly. ## Scope - Delete Tiltfile, gkg-dev.sh, build-dev.sh, .tilt-secrets.example, .gkg-dev.conf.example - Delete helm/values/gkg-local.yaml and helm/local/ (dev Prometheus + Grafana) - Remove tilt from mise.toml tools - Rewrite local-development.md around mise run dev - Update AGENTS.md, CLAUDE.md, README.md Not affected: E2E harness (cargo xtask e2e), production Helm charts, integration test Docker setup.