fix(stage0-resume): wrap jump-resume init with dhcpcd bring-up before continuing scripts

rootfs.py

@@ -74,6 +74,7 @@ def update_stage0_image(image_path,
         mounted = True
         script = '''
 import os
+import re
 import shutil
 import sys
 
@@ -108,6 +109,32 @@ lines.append("PAYLOAD_REQUIRED=False\\n")
 with open(config_path, "w", encoding="utf-8") as cfg:
     cfg.writelines(lines)
 
+# Resumed jump init scripts look like "bash /steps*/N.sh" and miss network bring-up.
+# Wrap only that form to keep normal /init behavior unchanged.
+init_path = os.path.join(mountpoint, "init")
+if os.path.isfile(init_path):
+    with open(init_path, "r", encoding="utf-8") as init_file:
+        init_text = init_file.read()
+
+    if "dhcpcd --waitip=4" not in init_text:
+        resume_match = re.search(
+            r"^\\s*bash\\s+(/(?:steps|steps-guix)/[0-9]+\\.sh)\\s*$",
+            init_text,
+            re.MULTILINE,
+        )
+        if resume_match:
+            resume_script = resume_match.group(1)
+            wrapped_init = f"""#!/usr/bin/bash
+set -e
+if command -v dhcpcd >/dev/null 2>&1; then
+    dhcpcd --waitip=4 || true
+fi
+exec bash {resume_script}
+"""
+            with open(init_path, "w", encoding="utf-8") as init_file:
+                init_file.write(wrapped_init)
+            os.chmod(init_path, 0o755)
+
 if build_guix_also:
     dest_steps_guix = os.path.join(mountpoint, "steps-guix")
     has_resume_scripts = False