0-3-2-understand-mode-bit-format

name	0.3.2-understand-mode_bit_format
description	[0.3.2] Base-8 positional numeral system used to encode file mode; Git stores exactly 6 octal digits representing 18 b

understand-mode_bit_format

CALL NUMBER: deep_tree_object.mode_bit_format DEFINITION: Base-8 positional numeral system used to encode file mode; Git stores exactly 6 octal digits representing 18 bits of mode information.

Invoke this skill to understand mode_bit_format 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_tree_object

• mode_zero_padding (d1): The leading zero in modes like 100644 and 040000 ensures consistent 6-digit width; the zero fills the third octal digit reserved for special file type flags.

CONSUMERS (what needs this)

tree_entry_mode

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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.)