docs: align FESA agents with minimal reference cases

docs/io-definitions/README.md

@@ -16,7 +16,7 @@ I/O Definition Agent는 Abaqus input file subset, 내부 solver model mapping, o
 - model data와 history data를 내부 solver 개념으로 매핑한다.
 - node, element, set, material, section, boundary condition, load, step, output request의 의미 계약을 정의한다.
 - `results.h5`의 authoritative HDF5 schema를 정의한다.
-- FESA HDF5 dataset을 `reference/<model-id>/` 아래 Abaqus reference CSV rows와 비교하기 위한 deterministic row schema를 정의한다.
+- 기능이 선언한 existing Abaqus CSV와 비교하기 위한 최소 source-ID/component mapping을 정의한다.
 
 수행하지 않는다:
 - parser를 구현하지 않는다.
@@ -123,58 +123,25 @@ I/O Definition Agent는 Abaqus input file subset, 내부 solver model mapping, o
 | element_force | /steps/<step>/frames/<frame>/field_outputs/element_forces | <nrow, ncomp> | float64 | component_names, element_ids, location | element | feature-dependent |
 | stress | /steps/<step>/frames/<frame>/field_outputs/S | <nrow, ncomp> | float64 | component_names, element_ids, integration_points | integration_point | feature-dependent |
 
-## FESA HDF5 to Reference CSV Comparison Schema
+## FESA HDF5 to Reference CSV Comparison Mapping
 
-FESA solver output은 `results.h5`이다. Comparison tooling reads required HDF5 datasets and maps them to deterministic row records that can be matched against Abaqus reference CSV files under `reference/<model-id>/`.
+FESA solver output은 `results.h5`이다. 기능이 blocking 또는 warning-only로 선언한
+quantity에 대해서만 existing CSV path와 다음 mapping을 정의한다.
 
-공통 규칙:
-- reference_root: `reference/<model-id>/`
-- hdf5_schema_version: <version>
-- reference_csv_schema_version: <version>
-- sort_order: step, frame, id, location, component
-- numeric_format: <precision and exponent policy>
-- missing_component_policy: 0 | N/A | omitted, feature-specific
-- hdf5_dataset_source: HDF5 dataset path를 각 row schema 또는 report에 기록한다.
+| field | contract |
+| --- | --- |
+| reference_input | exact existing `.inp` path |
+| reference_csv | exact existing required CSV path |
+| hdf5_dataset | authoritative FESA dataset path |
+| source_identity | node/element source label used for exact matching |
+| components | required CSV columns and corresponding HDF5 components |
+| row_precheck | missing/extra/duplicate/nonfinite required rows fail before tolerance |
+| behavior | blocking or warning-only |
+| tolerance | upstream-approved formula |
 
-### displacement rows / `<model-id>_displacements.csv`
-| column | type | description |
-| --- | --- | --- |
-| step | string | step name or index |
-| frame | integer | frame or increment id |
-| node_id | integer/string | Abaqus node label |
-| ux | float | displacement component |
-| uy | float | displacement component or 0/N/A |
-| uz | float | displacement component or 0/N/A |
-
-### reaction rows / `<model-id>_reactions.csv`
-| column | type | description |
-| --- | --- | --- |
-| step | string | step name or index |
-| frame | integer | frame or increment id |
-| node_id | integer/string | Abaqus node label |
-| rfx | float | reaction component |
-| rfy | float | reaction component or 0/N/A |
-| rfz | float | reaction component or 0/N/A |
-
-### internal force rows / `<model-id>_internalforces.csv`
-| column | type | description |
-| --- | --- | --- |
-| step | string | step name or index |
-| frame | integer | frame or increment id |
-| element_id | integer/string | Abaqus element label |
-| location | string | element/nodal/integration_point location |
-| component | string | force component name |
-| value | float | component value |
-
-### stress rows / `<model-id>_stresses.csv`
-| column | type | description |
-| --- | --- | --- |
-| step | string | step name or index |
-| frame | integer | frame or increment id |
-| element_id | integer/string | Abaqus element label |
-| integration_point | integer/string | integration point id or N/A |
-| component | string | stress component name |
-| value | float | stress value |
+Row order alone으로 대응하지 않는다. Canonical filename, reference CSV schema version,
+README, metadata, provenance 또는 single-step/final-frame case의 duplicated unit/coordinate/
+step-frame columns를 요구하지 않는다.
 
 ## Validation Rules
 - required_fields: <required input fields>
@@ -208,4 +175,5 @@ FESA solver output은 `results.h5`이다. Comparison tooling reads required HDF5
 - 내부 모델 계약은 semantic fields로 작성하고 C++ class/function/API를 확정하지 않는다.
 - `results.h5`가 authoritative solver output임을 명시해야 한다.
 - HDF5 schema는 dataset path, dtype/shape, required attributes, ID field, component naming, coordinate system, units, step/frame identity, quantity location을 포함해야 한다.
-- Reference CSV comparison row schema는 column name, stable sort order, ID field, component naming, coordinate system, units, step/frame identity, quantity location을 포함해야 한다.
+- Reference CSV comparison mapping은 exact path, source-ID column, required component columns,
+  HDF5 projection, row prechecks와 tolerance를 포함해야 한다.