Add a docker-compose.yml to run a local development stack: Postgres (with mounted init scripts), Redis, MinIO, Keycloak (start-dev) and pgAdmin, plus a bridge network and persistent volumes. Also add init/init.sql to create the keycloak database and grant privileges to the admin user so Keycloak can connect to its dedicated DB. Default credentials and port mappings are provided for development convenience.
Bootstrap repository with multi-component scaffolding: a Spring Boot backend (Maven wrapper, pom.xml, BackendApplication, test, resources, .gitignore/.gitattributes), a Go CLI app using Cobra (root + subcommands: diff, log, login, pull, push, set, unset), prebuilt CLI binaries and a build script, and a Next.js frontend (configs, package.json, styles, pages, and static assets). This commit provides the skeleton for development across backend, CLI, and frontend components.