Validate independent packed addons and complete physical mortar salvos

docs/native-flight-input-diagnostics.md

@@ -52,3 +52,11 @@ Four local source/runner checks pass without launching the engine or audio.
 The earlier observer compiled and exposed real input overwrites in 100422/101342; the revised before-write/final-write observer awaits its next source-bound native run. A native
 failure must remain a failure; these observations neither filter errors nor
 convert missing signals into zeros or successful flight evidence.
+
+With experimental `-errFlightActionInputs 1`, the observer also wraps the fixture's
+owned `PreparePilotActions` once. The written collective/FRA snapshot is the
+actual directional ActionManager readback; throttle is only a contemporaneous
+native observation, not an injected throttle action. The before-write snapshot
+still comes from native Apply and therefore shows the derived context after
+normal collection. Diagnostic code adds no action or control writes. The base
+fixture's selected writer and mandatory proof do not depend on this flag.