Graph Sanity Skill

Purpose

Ensures the decision graph produces valid, deterministic DecisionDTO outputs for a set of predefined command fixtures.

Inputs

• Command fixtures in .codex/skills/graph-sanity/fixtures/commands/.
• Decision graph implementation in graphs/core_graph.py.
• Decision JSON Schema in contracts/schemas/decision.schema.json.

Outputs

• Validation report printed to stdout.
• Non-zero exit code on any schema or rule violation.