lib/src/inspect.dart ports Inspect of package capsule of datekeys-go at
c531e93: the steps 1 to 8 of spec §63, without network and without
secrets, with the check of each step as Go records it, its name and its
detail, and Inspection with the fields of the steps that passed. The
opening runs them with a hook right after step 2, as the afterPrelude of
Go. inspectedLength, from prefix.ts of datekeys-ts, names the first bytes
that give the inspection of a whole file, so that a large capsule is read
up to one byte after the largest age header of PAYLOAD_AGE, and
maxAccessKeyRead the most bytes of a .dkk that its decoder needs. And
inspectView and inspectJson, the exact output of datekeys inspect -json
of internal/inspectview, with the public note.
lib/src/source.dart has ByteSource, the bytes of a capsule read by ranges,
which the application adapts from a file or a Blob, and BytesSource, over
bytes in memory; inspectCapsuleSource reads only the prefix.
The tests compare, byte for byte, the 24 fixtures/*.inspect.json and the
views of open_inspect.json, and each of the 5110 mutations of
inspect_differential.json with its code, its step and the text of Go,
also from a source read in pieces; and the prefix at the limits of age.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
