Recover native biped probes, support packets and contact records

docs/RUNOUT.md

@@ -39,3 +39,34 @@ error-recovery screen. BipedGround requires the contact toolkit (82D811C8 /
 board manager, state publications, and BipedAir/remount transitions. Existing
 recovered modules are being compiled and connected; enabling modules alone is
 not a working BipedGround implementation.
+
+## Contact toolkit progress
+
+The compiled offboard modules now include the existing native ground lifecycle,
+sync, reckoning, board possession, reset animation, stock settings loader and
+Skeleton mode4 adapter. The retained board transform has a distinct owner, as
+required by the recovered BipedGround skeleton update.
+
+`contact_queries` reconstructs82D856C8's three support probes and44 obstacle
+queries, including reverse rays and the constructor's accumulated float rounding.
+All41 probe definitions are checked word-for-word against an independently
+evaluated constructor using the dump above. The game adapter queries actual map
+triangles through the existing acceleration tree and retains query observations.
+Nonidentity mesh transforms use the complete geometry path to avoid incorrect
+world/local-space culling. Authored-floor and empty-space query tests pass.
+
+`contact_records` ports82D81F80's projection, normal fallback, record routing,
+flags, distance selection and64-record surface capacity. `contact_packet` ports
+82D2DDD0's reset and82D81610..82D818A0's primary/side-support consumption.
+Boundary tests cover the strict side-height limits, central-contact requirement,
+world-Y normal replacement, deep-support flags, lateral-normal fallback and
+record capacity. These tests validate recovered host arithmetic, not bit-exact
+Xenon arithmetic or a hardware replay.
+
+Still required: scene segment gathering inside82D81610; classifiers82D82498,
+82D82940,82D830A8,82D83438,82D837C8 and82D84060 and their helpers; query-result
+136 identity mapping; the production ground-job producer and lifecycle owners;
+BipedAir and board/remount integration. These preparatory modules deliberately
+do not enable BipedGround while its native contact producer remains incomplete.
+The production runout transition still fails and the playable binary has not
+been replaced with an incomplete on-foot implementation.