Nested D6/D9 Time With A Stronger Boundary: Read-Only D5 Witness And D6 Lease Stamping

Foundational — This article, Nested D6/D9 Time With A Stronger Boundary: Read-Only D5 Witness And D6 Lease Stamping, sharpens the existing nested-window time spine by turning the D4/D5 boundary into a contract-grade operational interface under SRAG and SEB/MAP separation, while preserving time as a promoted D6-to-D7 event rather than a narratively repaired witness outcome. The main advance is not a brand-new time ontology, but a reusable rule infrastructure for how ambiguous witness structure, layered geometry, typed zeros, shadow continuity, and promotion governance must be handled so that time cannot be minted from boundary haze, overlap shrinkage, or post-view reinterpretation. It makes D5 read-only at the enforcement boundary, forces D4-emitted typed-zero accounting, attaches Triad-of-Triads promotion discipline to the D7 gate, and integrates 3D sign-net inheritance without letting 3D narrative freedom rewrite the time record. This article, together with the February 10, 2026 article, Six-Point Star Witness at D5: Z-Tension Waist Selection and Shadow Corridors under a G-Sigma-P-L Contract, is responsible for establishing typed 0True (0T) and 0Shadow (0S), and that distinction in turn provided the logic behind the March 8, 2026 article, Sign Net Flow Under 3D Pad Framing: True and Shadow Gates Under Split STLF and SoZ. That is why this lands as Foundational rather than merely Significant: it does not just add a new observation or a local fix, it defines reusable boundary infrastructure that other time, witness, and promotion papers can inherit.