Development record

The lab chapter says the harvest of a halted lab leads with its gate finding (.abcd/development/brief/04-surfaces/31-lab.md:165), and `abcd lab harvest --help` says its gate findings come first (internal/surface/cli/lab.go:216). Gate findings sort first only within a section (internal/core/lab/harvest.go:285-286). A gate finding is open, so it sits in section 4, and any worked finding in section 3 precedes it; only a one-line halted note appears earlier, in section 2.