Start SoterProcessSupervisor from App.main() so the Layer-A forge
mounts on the on-demand soterserver process. prepareEnvironment() now
returns the system Context it previously discarded; main() hands it to
start() after keystore init and before Looper.loop(). start() runs on
its own HandlerThread and returns at once, so neither the blocking
keystore loop nor the message loop is affected.
The stub types ActivityThread.getSystemContext() as a bare ContextImpl,
so the Context cast warns CAST_NEVER_SUCCEEDS; the real ContextImpl does
extend Context, so it is runtime-safe and the warning is suppressed.
Checkpoint 10.W. compileDebugKotlin clean.
Enginex0
a4875dc200