feat: add Rust userspace support; fix TLS layout for p_align < 16; kill whole process on sibling-thread faults

kernel/src/Api/BuildNo.hpp

@@ -12,4 +12,4 @@
 
 #pragma once
 
-#define MONTAUK_BUILD_NUMBER 302
+#define MONTAUK_BUILD_NUMBER 306

kernel/src/Api/Process.hpp

@@ -221,6 +221,10 @@ namespace montauk::abi {
     }
 
     static int Sys_Kill(int pid) {
+        // A process may always kill itself: a sibling thread has no other
+        // way to take the whole process down (SYS_EXIT from a sibling ends
+        // only that thread), which abort()/panic=abort need.
+        if (pid == Sched::GetCurrentPid()) return Sched::KillProcess(pid);
         if (!Sched::HasCapability(CAP_PROCESS_ADMIN)) {
             int ancestor = pid;
             bool descendant = false;