Development record

02-constraints/01-platform.md:21 says 'a test hashes its tree before and after' and :23 says past disembarks are recorded as 'hash + file list + label'; the test is a path/size/mode fingerprint (internal/surface/cli/disembark_test.go:240-258; 02-disembark.md:234-235 'a fingerprint, not a content hash') and the voyage entry carries no file list and no label (internal/core/lifeboat/voyage.go:27-43; 03-embark.md:300-303).