refactor: promote new architecture to repository root

Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.

1 files changed, 64 insertions, 0 deletions

diff --git a/lume-legacy/src/user/init.cc b/lume-legacy/src/user/init.cc
new file mode 100644
index 0000000..376e697
--- /dev/null
+++ b/lume-legacy/src/user/init.cc
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+#include "ulib/stdio.h"
+#include "ulib/stdlib.h"
+#include "ulib/string.h"
+#include "user/user.h"
+#include "drivers/uart_color.h"
+
+int main()
+{
+    char *argv[] = {(char *)"sh", 0};
+
+    printf(ANSI_BLUE "\n[Init] Starting Lume OS Shell..." ANSI_RESET);
+    printf("\n");
+
+    while (1)
+    {
+        // printf("fork start\n");
+        int pid = fork();
+        // printf("fork suceess, pid=%i\n", pid);
+        
+        if (pid < 0)
+        {
+            printf("[Init] fork failed!\n");
+            exit(1);
+        }
+
+        if (pid == 0)
+        {
+            
+            char sh_path[] = "/sh";
+            exec(sh_path, argv);
+
+            printf("[Init] exec sh failed\n");
+            return 0;
+            exit(1);
+        }
+        else
+        {
+            // break;
+            int status;
+            int wpid;
+            while (1)
+            {
+                wpid = wait((uint64)&status);
+
+                if (wpid == pid)
+                {
+                    printf("Shell Exit");
+                    break;
+                }
+                if (wpid < 0)
+                {
+                    printf("[Init] wait error or no child\n");
+
+                    break;
+                }
+            }
+        }
+    }
+    return 0;
+}
\ No newline at end of file