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The gate reported a verdict nothing consulted. Now it decides. The promote moved out of the three build jobs into its own `promote` job, because the verdict cannot exist until build-web has finished and the promote used to run inside it. `needs: [build-web, build-ml, build-agent, smoke-web]` is the whole mechanism: a failed smoke skips the promote, so a refresh that broke something leaves :latest naming the build that works. "The refresh failed" and "production is broken" must not be the same event. A SKIPPED smoke also skips it, and that is the case that matters most. On run 5290 the gate silently skipped itself — job-level `if:` cannot read the env context — and a design where only a FAILED gate blocks would have published unverified images while reporting success. Not running is not the same as passing, and today produced two separate bugs of exactly that shape (#3414, and the smoke-web skip). All three images now promote together or not at all. They are one stack: build.yml already refuses to publish a :dev web image beside a stale :dev ml because the mismatch only surfaces as a runtime failure, and a refresh that published ml while withholding web would be that same trap reached through the gate. Stated plainly in the job comment: the gate covers web only, so ml and agent are held to web's verdict rather than their own. That is the conservative direction, not equivalent evidence, and should not be read as if it were. Three near-identical promote steps collapsed into one loop. A partial failure now says which images moved and that the state is inconsistent, rather than leaving that to be inferred — the promote is idempotent and the candidates are still published, so the instruction is simply to re-run. Also removed the now-dead `promote` output from the ml and agent reuse steps. Only build-web's is read (as outputs.candidate); two more copies nothing consults is the kind of thing that reads as load-bearing a year later. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TTjbZZ6JirCMSaJzQV1RhA