fix: inherit process environment and untrack libc objects

programs/include/Api/Syscall.hpp

@@ -233,6 +233,9 @@ namespace montauk::abi {
     static constexpr uint64_t SYS_MMAP_ANON           = 168;
     static constexpr uint64_t SYS_MUNMAP              = 169;
     static constexpr uint64_t SYS_MPROTECT            = 170;
+    static constexpr uint64_t SYS_GETENVIRON          = 171;
+    static constexpr uint64_t SYS_SETENVIRON          = 172;
+    static constexpr uint64_t SYS_SPAWN_ENV           = 173;
 
     // Tunable parameters (for SYS_SDR_SETPARAM / SYS_SDR_GETPARAM).
     static constexpr int SDR_PARAM_FREQ        = 0;  // center frequency, Hz

programs/include/libc/montauk.h

@@ -73,6 +73,9 @@ extern "C" {
 #define MTK_SYS_MOUSESTATE         47
 #define MTK_SYS_SETMOUSEBOUNDS     48
 #define MTK_SYS_SPAWN_REDIR        49
+#define MTK_SYS_GETENVIRON         171
+#define MTK_SYS_SETENVIRON         172
+#define MTK_SYS_SPAWN_ENV          173
 #define MTK_SYS_CHILDIO_READ       50
 #define MTK_SYS_CHILDIO_WRITE      51
 #define MTK_SYS_CHILDIO_WRITEKEY   52

programs/include/libc/spawn.h

@@ -15,7 +15,7 @@ extern "C" {
     * Limitations (kernel spawn model):
     *  - argv is joined into a single args string; arguments containing
     *    spaces are rejected with EINVAL (no quoting in the kernel).
-    *  - envp is ignored (no environment transfer on spawn).
+    *  - envp is copied into the child; NULL inherits the current environment.
     *  - file actions must be empty: stdio redirection needs kernel
     *    support that does not exist yet, so any recorded action makes
     *    posix_spawn fail with ENOTSUP rather than misbehave silently.