A bleeding-edge container running next to a stable one on the same dev box is easy to confuse, and a branch-only badge would force perpetual rebase/cherry-pick drift between main and dev-be. Instead the badge is config-driven: the settings endpoint injects a synthetic env_label from SHOPDB_ENV_LABEL, the sidebar renders a red DEV tag only when it is non-empty, and stable simply leaves it unset. Same code on both channels, no divergence.
dev-bootstrap.ps1 makes a fresh Windows box turnkey: it checks git/Docker (winget-installs with a prompt), verifies the engine is actually running, then builds and starts an isolated per-channel stack so stable and edge coexist on distinct ports, projects, and volumes. docker-compose.channel.yml is a thin overlay so the base compose file stays channel-agnostic.
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