- Created qvl_ffi.zig: C ABI exports (qvl_init, qvl_deinit, trust scoring, PoP verification, betrayal detection, graph mutations)
- Created qvl.h: C header with full API documentation
- Created test_qvl_ffi.c: C test harness (manual compilation)
- Added FFI tests to build.zig with libc linking
- Fixed API mismatches: TrustGraph.init (3 args), BellmanFordResult.betrayal_cycles usage
- All tests passing (173/173: 137 SDK + 36 FFI)
FFI enables Rust Membrane Agents (L2) to consume L1 trust functions.
Markus Maiwald