fix: inherit process environment and untrack libc objects

kernel/src/Sched/Scheduler.hpp

@@ -65,6 +65,7 @@ namespace Sched {
     };
 
     struct Process {
+        static constexpr uint32_t EnvironmentBytes = 4096;
         int pid;
         ProcessState state;
         int waitingForPid;     // PID this process is blocked on (-1 if none)
@@ -82,6 +83,8 @@ namespace Sched {
         uint64_t heapNext;        // Simple bump allocator for user heap
         uint32_t readdirCursor;   // Next SYS_READDIR scratch slot
         char args[4096];          // Command-line arguments (set by parent via Spawn)
+        char environment[EnvironmentBytes]; // NUL-separated NAME=VALUE entries
+        uint32_t environmentLength;
         char user[32];            // Owner user name (inherited from parent on spawn)
         char cwd[256];            // Absolute current working directory
 
@@ -139,7 +142,8 @@ namespace Sched {
     };
 
     void Initialize();
-    int Spawn(const char* vfsPath, const char* args = nullptr, bool startReady = true);
+    int Spawn(const char* vfsPath, const char* args = nullptr, bool startReady = true,
+              const char* environment = nullptr, uint32_t environmentLength = 0);
     int StartProcess(int pid);
     void Schedule();