0-2-3-understand-author-timestamp

name	0.2.3-understand-author_timestamp
description	[0.2.3] Integer Unix timestamp recording when the author created the change; represents seconds since epoch (1970-01-0

understand-author_timestamp

CALL NUMBER: deep_commit_object.author_timestamp DEFINITION: Integer Unix timestamp recording when the author created the change; represents seconds since epoch (1970-01-01 00:00:00 UTC) in the author field.

Invoke this skill to understand author_timestamp down to its primitives. The RELATIVE ROOT below is the least-fixed-point closure of everything it bundles from — the full import cone, grouped by the lib each prim comes from. Projected from a prover-typed KB (MAP/SWI-Prolog consistency gate): every reference below resolves.

THE RELATIVE ROOT (the import cone, by lib)

from deep_commit_object

• author_date (d1): Composite of author_timestamp and author_timezone; git log --date= formats this value.

CONSUMERS (what needs this)

author_date, author_timezone

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Projected from the git internals and the object model KB (162 concepts / 159 relations) — consistency-typed by MAP; the facet list after the colon IS the cross-lib dependency web.

(leaf — this is an actual skill.)