docs: reset mitc4 formulation baseline

docs/VERIFICATION_PLAN.md

@@ -43,12 +43,14 @@ references/
   <case_name>_displacements.csv
 ```
 
-Accepted initial case:
+Accepted stored cases:
 
 ```text
 references/
   quad_01.inp
   quad_01_displacements.csv
+  quad_02.inp
+  quad_02_displacements.csv
 ```
 
 `quad_01_displacements.csv` contains 121 nodal rows with these columns:
@@ -57,6 +59,8 @@ references/
 Node Label, U-U1, U-U2, U-U3, UR-UR1, UR-UR2, UR-UR3
 ```
 
+`quad_02_displacements.csv` uses the same required columns and contains 121 nodal rows.
+
 Future manifest-driven layout is still recommended as the case set grows:
 
 ```text
@@ -155,6 +159,7 @@ Current initial case:
 | Case | Files | Notes |
 |---|---|---|
 | `quad_01` | `quad_01.inp`, `quad_01_displacements.csv` | Abaqus/CAE Learning Edition 2024 input; 121 displacement rows; includes `S4R`, `Part/Assembly/Instance`, `*Density`, and `NLGEOM=YES`, which are outside the current Phase 1 parser/solver subset |
+| `quad_02` | `quad_02.inp`, `quad_02_displacements.csv` | Abaqus/CAE input; 121 displacement rows; uses `TYPE=S4` and `NLGEOM=NO`, but still includes `Part/Assembly/Instance` and `*Density`, so it must be normalized or handled by an explicit parser compatibility sprint before automated Phase 1 input acceptance |
 
 Rules:
 - Original `.inp` files under `references/` should not be modified just to fit FESA Phase 1.