A user-directed extension over the build subsystem: an uploaded modpack stays in pending_review and is never built until an admin approves. Approval is a single-winner compare-and-swap that hands off to the image-build Job, keeping the mandatory vulnerability scan in front of any push.
Foundational libraries: deterministic resource naming, the RCON client, the Postgres store with embedded SQL migrations, configuration loading, and container image-build helpers.
Machine-readable contract for the felis-api faces. The parity test (internal/api/openapi_test.go) checks every served route against this document's x-felis-face and x-felis-tier, so served and documented routes cannot drift.
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