Auto-patch Blancco config.img for network report storage

After extracting Blancco from ISO, automatically patches preferences.xml
to save erasure reports to \\10.9.100.1\blancco-reports via SMB.
Sets auto_backup=true so reports save without user intervention.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

prepare-boot-tools.sh

@@ -104,6 +104,28 @@ if [ -n "$BLANCCO_ISO" ] && [ -f "$BLANCCO_ISO" ]; then
         mkdir -p "$OUT_DIR/blancco/arch/x86_64"
         cp "$TMPDIR/arch/x86_64/airootfs.sfs" "$OUT_DIR/blancco/arch/x86_64/"
         echo "    Extracted Blancco boot files."
+
+        # Patch config.img to auto-save reports to PXE server Samba share
+        if [ -f "$OUT_DIR/blancco/config.img" ]; then
+            echo "    Patching config.img for network report storage..."
+            CFGTMP=$(mktemp -d)
+            cd "$CFGTMP"
+            cpio -id < "$OUT_DIR/blancco/config.img" 2>/dev/null
+
+            if [ -f "$CFGTMP/preferences.xml" ]; then
+                # Set network share to PXE server's blancco-reports Samba share
+                sed -i 's|<hostname></hostname>|<hostname>10.9.100.1</hostname>|' "$CFGTMP/preferences.xml"
+                sed -i 's|<path></path>|<path>blancco-reports</path>|' "$CFGTMP/preferences.xml"
+                # Enable auto-backup of reports to the network share
+                sed -i 's|<auto_backup>false</auto_backup>|<auto_backup>true</auto_backup>|' "$CFGTMP/preferences.xml"
+
+                # Repack config.img
+                ls -1 | cpio -o -H newc > "$OUT_DIR/blancco/config.img" 2>/dev/null
+                echo "    Reports will auto-save to \\\\10.9.100.1\\blancco-reports"
+            fi
+            cd "$SCRIPT_DIR"
+            rm -rf "$CFGTMP"
+        fi
     else
         echo "    Could not extract boot files from ISO."
     fi