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.codex/skills/fesa-abaqus-subset/SKILL.md

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+---
+name: fesa-abaqus-subset
+description: Design or review Abaqus input parsing against the documented FESA Phase 1 keyword subset.
+---
+
+# FESA Abaqus Subset
+
+Use this skill when parser scope, input compatibility, Nset/Elset handling, or unsupported keyword behavior is involved.
+
+## Read First
+
+- `/AGENTS.md`
+- `/PROGRESS.md`
+- `/PLAN.md`
+- `/docs/ABAQUS_INPUT_SUBSET.md`
+- `/docs/NUMERICAL_CONVENTIONS.md`
+- `/docs/ARCHITECTURE.md`
+- `/docs/VERIFICATION_PLAN.md`
+
+## Workflow
+
+1. Map each requested keyword to the documented Phase 1 subset.
+2. Check `*Nset` and `*Elset` semantics, ordering, generated sets, and use by boundary/load/result requests.
+3. Keep Abaqus keyword parsing separated from internal object creation through Factory + Registry.
+4. Require explicit diagnostics for unsupported keywords instead of silent partial parsing.
+5. Record parser-scope changes in ADRs or subset docs when they affect project policy.
+
+## Do Not
+
+- Do not silently expand support beyond the documented subset.
+- Do not store parser-only details in solver core objects unless the architecture document requires it.