afraznein

Use BEFORE modifying any KTPReHLDS C++ (engine, dedicated launcher, rehlds_api) — fork-delta discipline, the cross-thread Con_Printf/telemetry traps, the vtable-ABI rule, build/smoke-test/stage workflow, and verify-by-md5. Also use when planning a change, to know which invariants it touches.

Use BEFORE modifying any header in this repo (engine/eiface.h primarily) — the ABI append-only contract, the pfnClientCvarChanged trigger-scope fact, and the coordinated-bump workflow with KTPAMXX/KTP-ReHLDS.