fix: move RTL-SDR to userspace

kernel/src/Sched/Scheduler.cpp

@@ -27,6 +27,7 @@
 #include <Drivers/Audio/Mixer.hpp>
 #include <Drivers/Graphics/IntelGPU.hpp>
 #include <Ipc/Ipc.hpp>
+#include <Drivers/USB/UserUsb.hpp>
 
 // Assembly: context switch with CR3 and FPU state parameters
 extern "C" void SchedContextSwitch(uint64_t* oldRsp, uint64_t newRsp, uint64_t newCR3,
@@ -1607,6 +1608,11 @@ namespace Sched {
         // never stranded on the invisible buffer (no-op for non-owners).
         Drivers::Graphics::IntelGPU::OnProcessExit(exitingPid);
 
+        // USB interface claims are process-owned capabilities. Closing them
+        // here stops DMA streaming and releases exclusivity even when an app
+        // exits without calling usb_close().
+        Drivers::USB::UserUsb::ReleaseAllForPid(exitingPid);
+
         // Release process-scoped IPC handles/mappings before tearing down the address space.
         Ipc::CleanupProcessSlot(slot, exitingPid, proc.pml4Phys);
         montauk::abi::CleanupHeapForSlot(slot, proc.pml4Phys);