b77b9d70f added TagOutcome::Blocked (a tag that never started because a
tag it waited on did not complete) and missed the exhaustive match in
jouledesk-github's seal(): E0004, and the nightly's jouledesk-rs leg on
macOS has failed since (runs 34672, 35833). The arm reads as the variant
documents it: never started, nothing spent.
Co-Authored-By: Claude Opus 5.5 <[email protected]>