Canonical C++ API surface for the T81 Foundation stack.
frontend/: language frontend AST/parser/semantic contractstisc/ and ir/: IR and bytecode interfacesvm/, hanoi/, axion/: execution and policy interfacesbigint/, tensor/, ternary/, simd/: numeric/runtime primitivescanonfs/, codec/, hash/, crypto/, io/: persistence and encodingcli/, lang/, setun/: tool and bridge-facing surfacesdetail/ internals.core/ compatibility wrappers as migration/adapter lanes, not new feature targets.docs/guides/.