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- MGPipeBarriered(op, payload, applierState), IMPLEMENTED, not stubbed: the static wait-class column plus the two payload-derived escalations the contract names (an open XFB span, a draw carrying kDrawClientArrays). One function and two callers is the point - the emit table and the sink must reach the same answer or the client runs on while the server reads a value that has already moved. set_context_values now mirrors IsTransformFeedbackActive into the applier state as well, because a predicate that read it out of gPipeInputs would be reading the very block run-ahead stops filling. - MGPipeApplierCurrentRecordIsBarriered() with the writer beside it. It answers true by default and that IS the landed lockstep answer, not a stub: on a server without kCapRunAheadApply every record is barriered and CONTRACT-P5C's two exemption scopes keep working unchanged. - The sb applier fields (BoundShaderBuffers[3][84], the three windows, the writable masks and ShaderBuffersSerial) and the pg record fields (the three binding tails, Signature, BindingsSerial) with the two entry points MGPipeApplySetShaderBuffers / MGPipeApplySetProgramBindings declared and ABORTING BY NAME. - The by-handle backend seams in Managers.h with aborting bodies in one block: ResolveVaoTwin, ResolveTextureTwin, ResolveProgramTwin, SyncTextureToBackendByHandle, SyncMipmapsToBackendByHandle, and the FBO / RBO / program SyncToBackendByHandle overloads. Five packages sit on opposite sides of these calls - tx2 writes what fb calls, fb writes what tx2 needs, id rekeys the registries all three read - so the signature is fixed once here and each family replaces a body. Abort and not null: a resolver that answered null renders a blank draw and a sync that did nothing renders stale pixels, and both are green lanes. - Coverage.def's GetBufferBindingPoint -> SetShaderBuffers row with BOTH of its PipeFill.cpp switch arms and the pairing asserts, shape-only and inert. It lands with the contract package because PipeFill.cpp belongs to the contract package for the whole phase - an emitter enumerator whose dispatch arm lived in the family's worktree is the merge trap that file's own comment was written about. - FieldOwnership.def re-annotates the six object-class rows plus GetProgramForDispatch to "P5e (Espryt unbarriered), P7 (Magma)", and the strict-abort case follows the string, which IS the debt entry rather than decoration. kMGPipeMaxBufferBindingPoints is pinned against BufferState.h's 84 where both are visible. gen_pipe_field_ownership's refusal count is 8.