revert

.codex/skills/fesa-formulation-spec/SKILL.md

@@ -12,7 +12,7 @@ Use this skill to turn approved requirements and research evidence into an imple
 Read these first:
 
 - `AGENTS.md`
-- `docs/AGENT_RULES.md`
+- `docs/SOLVER_AGENT_DESIGN.md`
 - `docs/formulations/README.md`
 - `docs/requirements/<feature-id>.md`
 - `docs/research/<feature-id>-research.md`
@@ -54,7 +54,7 @@ Produce or revise `docs/formulations/<feature-id>-formulation.md` with:
 - Do not design C++ APIs.
 - Do not implement parsers.
 - Do not run Abaqus, Nastran, or any reference solver.
-- Do not generate reference HDF5 artifacts or reference CSVs.
+- Do not generate reference CSVs.
 - Do not approve release readiness.
 
 ## Quality Gate