egil

Run an extremely strict maintainability review for abstraction quality, giant files, and spaghetti-condition growth. Use for a thermo-nuclear code quality review, thermonuclear review, deep code quality audit, or especially harsh maintainability review.

Use when adding, editing, or reviewing source code comments. Guides Codex to write useful comments that explain why code is shaped a certain way, especially around non-obvious constraints, concurrency hazards, Orleans lifecycle rules, stream/outbox ordering, compatibility requirements, parsing loosely structured input, external standards, and workarounds.

Orchestration and guidance for backend testing changes, from unit and Orleans tests to host-level and commit discipline.

Deterministic async assertions for Orleans tests using per-subscriber channels, a shared grain call filter, and event-driven retry without polling.

Use when implementing or validating the Orleans pattern where a per-silo GrainService caches data by subscribing to a data grain that persists observer references, so updates continue after grain deactivation or silo restarts/migration.