Canonical source vm-map/engine-ctx.toml (35 documented ctx fields) + engine_ctx_build.py (--build/--lint, unit-tested) -> build/engine-ctx.json + docs/engine-ctx-reference.md. Applied to Ghidra in the next task. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>