A dev workspace's git branch is its environment label verbatim (dev/
staging, default dev) — a first-class env branch like the documented
push-on-merge-staging layout — instead of the wm-fork/** form. The label
rides the deploy job args (backend → hub script → CLI
--dev-workspace-label), the PR completion hook derives the same head, the
webhook/poller route label branches into the matching dev-workspace child
(poller lists them alongside wm-fork/* via extra ls-remote refs / per-label
API lookups), and manual pulls from the UI pass clone_ref accordingly. The
CLI refuses to deploy when the label branch equals the checked-out tracked
branch, which would otherwise commit fork content straight to it.
Because the branch is keyed on the label, the label is now immutable after
creation: set at create/attach only, the set_dev_workspace_label endpoint
is removed and the settings tab shows it read-only.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PP5gBSPfo1YtkL1sWVAjJm
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