t8_via_realization_bridge_holds

The Unified Forcing Chain module aims to show every step from the absolute floor through T8 is forced from the Recognition Composition Law plus normalization and calibration. In that ladder, T7 asserts that the minimal ledger-compatible cycle is $2^D$, and with $D=3$ this is the eight-tick octave. T8 is the claim that spatial dimension itself is forced to three.

This declaration sits on a refined paper route. Intermediate bridges T7.5a and T7.5c package predicate-level cellular completion and one-acyclicity on the substrate in every dimension. Substrate axioms supply loop entanglement (circle case $p=1$) and compatibility of the topological witness with the closed walk of the T7 recognition cycle. Upstream, dimension_unique_via_realization states that any RS-compatible dimension equals $3$, discharging the numerical claim by the existing Alexander-duality linking theorem (linking_requires_D3). The classical T8 surface (t8_holds) already bundles linking-forces-$D=3$, eight-tick-forces-$D=3$, and uniqueness.

Pure term-mode structure constructor for T8_Via_Realization_Bridge. Each field is filled by an existing lemma:

• loop entanglement: loop_entanglement_circle_witness (circle case $p=1$);
• compatibility: compatibility_trivial (closed-walk witness);
• realization bridge from T7: t7_to_realization_bridge_holds h7;
• forces $D=3$: dimension_unique_via_realization (RS-compatible dimension implies $D=3$ via linking);
• agreement with the classical surface: t8_holds.

No new arithmetic or topology is proved here; the term only assembles the realization package under the three hypotheses.

Closes the realization-route constructor for T8 inside the Complete Inevitability Chain. Framework landmark T8 ($D=3$ spatial dimensions) is reached not only by the public-spine linking closure (forces_D3) but also by the T7.5 substrate package (cellular completion, one-acyclicity, loop entanglement, cycle compatibility) feeding dimension_unique_via_realization. That matches the module claim that T8 follows from linking plus gap-45 sync, with eight-tick already forced at T7 as $2^3$.

The doc-comment frames this as the constructor for the T8-via-realization bridge; the trailing note records that the new route agrees with the existing T8 theorem surface. No downstream consumers are wired yet (used_by empty), so this is presently a terminal packaging lemma in the unified chain rather than an intermediate step toward constants or mass formulas. It does not reopen T5 J-uniqueness or T6 $\varphi$-forcing; those sit earlier in the chain.