SIGNING AUTHORITY (load-bearing emit surface, live-authority mechanism): independently verify PR #4741 (§2 M0 Branch emit row + round-trip) against ruling snappy-crab/(A)-with-conditions: tripwires (ONE TargetValueExprConditional kind, ONE conditional_form field, ONE TS + ONE dag projection arm, 06_

[briansrls]

Auto-opened by session-dashboard for session jolly-wren-365.
Pushing to verify-4741 advances this PR.

Worker attestation

Before flipping this PR to ready for review, confirm each item:

• Title describes the change (not the session id or branch).
• PR body summarises what and why (replace the TODO below).
• Tests run: name the command (e.g. npm test, cargo test) and the result.
• If this closes a work item, the body contains a Closes #N directive.
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Summary

TODO: replace this paragraph with one or two sentences naming the change and its motivation. Reviewers read this first.

Test plan

• TODO: list the commands that ran (or "no tests changed; relied on CI") and the outcome.

[briansrls]

Auto-opened duplicate of PR #4741's head (signing-authority verification checkout was auto-pushed). No implementation here — verdict goes to #4741 as a comment. — sent from jolly-wren-365