Add brewlog user/group (UID/GID 1000) to chiseled rootfs via
base-passwd_data slice and useradd. Set USER 1000:1000 in the
runtime stage. Requires a one-time remediation deploy (with
gosu + chown entrypoint) to fix existing volume permissions
before this can be used.
Replace Nix flake with mise for toolchain management, treefmt for
formatting, prek for pre-commit hooks, and a Dockerfile for container
builds. Update CI workflows to use jdx/mise-action instead of Nix.
Add system dependency instructions to README.md and CLAUDE.md.