feat: add proclist command, fix TLS bug, link libc for system programs

programs/src/proclist/main.cpp

@@ -0,0 +1,28 @@
+/*
+    * main.cpp
+    * Process list command for MontaukOS userspace
+    * Copyright (c) 2026 Daniel Hammer
+*/
+
+#include <montauk/syscall.h>
+#include <libc/stdio.h>
+
+extern "C" void _start() {
+    static montauk::abi::ProcInfo processes[256];
+    int n = montauk::proclist(processes, 256);
+
+    if (n <= 0) {
+        montauk::print("Failed to query processes.\n");
+        montauk::exit(-1);
+    }
+
+    montauk::print("  PID\tHeap\tImage Name\n");
+
+    for (int i = 0; i < n; i++) {
+        unsigned heapMb = (unsigned)(processes[i].heapUsed / (1024 * 1024));
+
+        printf("  %d\t%d MB\t%s\n", processes[i].pid, heapMb, processes[i].name);
+    }
+
+    montauk::exit(0);
+}