docs: align consolidated solver workflow

docs/linear-static-mitc4-shell/requirements.md

@@ -9,7 +9,7 @@
 - date: `2026-08-13`
 - approval_basis: 사용자와 확정한 선형 정적 범위, `S4`/`S4R` 매핑, 6자유도 외부 계약, drilling 안정화, 자동 director 생성, 결과 및 검증 계약
 - current_product_state: `requirements-approved-not-implemented`
-- formulation_alignment: `docs/formulations/mitc4-shell-formulation.md`는 이 baseline의 6자유도 및 고정 drilling 안정화 계약과 정렬함
+- formulation_alignment: `docs/linear-static-mitc4-shell/formulation.md`는 이 baseline의 6자유도 및 고정 drilling 안정화 계약과 정렬함
 - reference_inventory_state: full-integration FESA-MITC4의 Abaqus acceptance comparison은 `reference/shell/`의 S4 input/displacement CSV만 기존 경로와 이름 그대로 사용함; S4R source support는 reference artifact 없이 mapping/kernel/HDF5 tests로 검증함
 
 ## Purpose
@@ -39,7 +39,7 @@ Formulation, Numerical Review, I/O, Reference Model, Implementation Planning 및
 - `docs/PRD.md`, `docs/ARCHITECTURE.md`, `docs/ADR.md`: end-to-end feature boundary,
   ownership, linear-static lifecycle, deterministic assembly, HDF5, reference immutability 및
   failure atomicity
-- `docs/formulations/mitc4-shell-formulation.md`: 후속 정렬이 필요한 선행 draft이며 이
+- `docs/linear-static-mitc4-shell/formulation.md`: 후속 정렬이 필요한 선행 draft이며 이
   approved requirements baseline을 변경하는 근거로 사용하지 않음
 
 ## In Scope
@@ -250,7 +250,7 @@ and tangent derivation may remain in the formulation document.
 
 ### Formulation Agent
 
-- Revise `docs/formulations/mitc4-shell-formulation.md` to align with global 6-DOF input/output and a physical 5-DOF MITC4 kernel plus numerical drilling embedding.
+- Revise `docs/linear-static-mitc4-shell/formulation.md` to align with global 6-DOF input/output and a physical 5-DOF MITC4 kernel plus numerical drilling embedding.
 - Keep current-product equations strictly linear static; retain geometric-nonlinear residual/tangent only as clearly separated future formulation.
 - Define local frames, transformations, generalized component order, quadrature/tying, stress/resultant recovery and consistent units/signs.
 - Do not introduce distributed-load product support or make `S4R` select reduced integration.