fix: inherit process environment and untrack libc objects

template/docs/syscalls.md

@@ -32,7 +32,7 @@ void     exit(int code);                              // Terminate process (nore
 void     yield();                                     // Yield CPU to scheduler
 void     sleep_ms(uint64_t ms);                       // Sleep for milliseconds
 int      getpid();                                    // Get current process ID
-int      spawn(const char* path, const char* args);   // Spawn child process (-1 on error)
+int      spawn(const char* path, const char* args);   // Spawn child, inheriting environment
 int      waitpid(int pid);                            // Wait for process to exit
 int      kill(int pid);                               // Kill a process
 int      proclist(ProcInfo* buf, int max);             // List all processes (returns count)

template/sysroot/include/Api/Syscall.hpp

@@ -208,6 +208,9 @@ namespace montauk::abi {
 
     // Absolute path of the running executable (for argv[0]).
     static constexpr uint64_t SYS_GETEXECPATH         = 151;  // (index, flags) -> new front index; index=-1 queries support (1/0); flags bit0 = wait vsync
+    static constexpr uint64_t SYS_GETENVIRON          = 171;
+    static constexpr uint64_t SYS_SETENVIRON          = 172;
+    static constexpr uint64_t SYS_SPAWN_ENV           = 173;
 
     // Path metadata (size, timestamps, mode). (const char* path, FileStat* out) -> 0, -1 on error/unsupported.
     static constexpr uint64_t SYS_STAT                = 152;

template/sysroot/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

template/sysroot/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.