Add chroot depmod for proper module dependencies in initramfs

- Added chroot + depmod -a step in setup-initramfs.sh before cpio creation
- Generates module dependencies within the actual initramfs environment
- Includes bind mounting of /proc, /sys, /dev for proper chroot operation
- Ensures TUN module and all network modules have correct dependencies
- Complements existing build-time depmod in install-firmware-minimal.sh

scripts/setup-initramfs.sh

@@ -270,6 +270,30 @@ rm -rf run
 ln -sf ../run run || true
 cd "$INITRAMFS_ROOT"
 
+# Generate module dependencies within the initramfs environment
+echo "  Generating module dependencies in chroot environment..."
+KERNEL_VERSION=$(cat /build/configs/kernel-version)
+if [ -d "$INITRAMFS_ROOT/lib/modules/${KERNEL_VERSION}-Zero-OS" ]; then
+    # Bind mount necessary filesystems for chroot
+    mount --bind /proc "$INITRAMFS_ROOT/proc" 2>/dev/null || true
+    mount --bind /sys "$INITRAMFS_ROOT/sys" 2>/dev/null || true
+    mount --bind /dev "$INITRAMFS_ROOT/dev" 2>/dev/null || true
+    
+    # Run depmod in chroot to generate dependencies
+    if chroot "$INITRAMFS_ROOT" /sbin/depmod -a "${KERNEL_VERSION}-Zero-OS" 2>/dev/null; then
+        echo "    ✓ Module dependencies generated successfully"
+    else
+        echo "    Warning: Failed to generate module dependencies in chroot"
+    fi
+    
+    # Cleanup bind mounts
+    umount "$INITRAMFS_ROOT/proc" 2>/dev/null || true
+    umount "$INITRAMFS_ROOT/sys" 2>/dev/null || true
+    umount "$INITRAMFS_ROOT/dev" 2>/dev/null || true
+else
+    echo "    Warning: No kernel modules directory found, skipping depmod"
+fi
+
 # Create initramfs archive
 echo "[+] Creating initramfs archive..."
 cd "$INITRAMFS_ROOT"