v0.76.0

Pairs with catalyst 0.124.0. In 0.124.0, a module can make a type's creating command the only grant that creates it (created_by_exclusive); knowledge-base 0.8.0 uses it, so only a Knowledge Curator creates a KB or a KBUILD.

• The desktop app ships kernel 0.124.0, and the core's spec and the verified kernel are at 0.124.0.
• CI: the macOS stall wording is corrected. A stalled job never gets a runner and is cancelled after 15 minutes of waiting; it is retried once.

Works with kernel >=0.54.0.