Fix password logic error in preseed handling

- Fix set_root_password.sh to update both build-time and live system preseed files
- Update auto-installer.sh to handle crypted passwords from preseed
- Fix cleanup.sh to reset both preseed files to default state
- Add changelog entry documenting the critical bug fix
- Resolve login issue where installed systems always used default password

This fixes the core issue where set_root_password.sh only modified the build-time
preseed file, but the auto-installer used the live system preseed file which
remained unchanged, causing installed systems to always have 'changeme' password.

CHANGELOG.md

 # MBetter Live CD - Changelog
 
+## Version 2.0.1 - Password Logic Fix (2025-09-06)
+
+### 🐛 Critical Bug Fix
+
+#### **Password Logic Error - RESOLVED**
+- ✅ **Fixed password synchronization** between build-time and live system preseed files
+- ✅ **Updated set_root_password.sh** to modify both `config/preseed/debian-installer.cfg` and `config/includes.binary/preseed.cfg`
+- ✅ **Enhanced auto-installer.sh** to handle crypted passwords from preseed files
+- ✅ **Fixed cleanup.sh** to reset both preseed files to default state
+- ✅ **Verified compatibility** with all password modification tools (customize_iso.sh, usb_creator_gui.py)
+
+#### **Root Cause:**
+- `set_root_password.sh` only updated build-time preseed file
+- Auto-installer used live system preseed file (which remained unchanged)
+- Installed systems always used default "changeme" password
+
+#### **Impact:**
+- **Before:** Installed systems couldn't login with configured password
+- **After:** Password configuration works correctly across all tools
+
+### 📝 Files Modified
+- **Enhanced:** [`set_root_password.sh`](set_root_password.sh) - Updates both preseed files
+- **Enhanced:** [`cleanup.sh`](cleanup.sh) - Resets both preseed files
+- **Enhanced:** [`config/includes.chroot/usr/local/bin/auto-installer.sh`](config/includes.chroot/usr/local/bin/auto-installer.sh) - Handles crypted passwords
+
+### ✅ Verification
+- Tested password setting with `./set_root_password.sh testpassword123`
+- Verified both preseed files contain identical crypted passwords
+- Confirmed cleanup resets both files to default state
+- Validated compatibility with existing tools
+
+---
+
 ## Version 2.0.0 - Major Autologin and USB Creator Release (2025-01-04)
 
 ### 🚀 Major Features Added

cleanup.sh

@@ -50,8 +50,9 @@ if [ "$EUID" -ne 0 ]; then
     exit 1
 fi
 
-# Revert root password to default in preseed file
+# Revert root password to default in preseed files
 sed -i 's|d-i passwd/root-password-crypted password .*|d-i passwd/root-password password changeme|' config/preseed/debian-installer.cfg
+sed -i 's|d-i passwd/root-password-crypted password .*|d-i passwd/root-password password changeme|' config/includes.binary/preseed.cfg
 
 # Remove OpenVPN configuration
 if [ -d "config/includes.chroot/etc/openvpn" ]; then

config/includes.chroot/usr/local/bin/auto-installer.sh

@@ -566,7 +566,15 @@ configure_target_system() {
 
     # Set root password from preseed, live system, or use default
     ROOT_PASS=$(get_preseed_value "passwd/root-password")
-    if [ -n "$ROOT_PASS" ]; then
+    ROOT_PASS_CRYPTED=$(get_preseed_value "passwd/root-password-crypted")
+    if [ -n "$ROOT_PASS_CRYPTED" ]; then
+        print_status "Setting root password from crypted preseed file..."
+        log "Setting root password from crypted preseed"
+        # Extract the crypted password (remove "password " prefix)
+        CRYPTED_PASS=$(echo "$ROOT_PASS_CRYPTED" | sed 's/^password //')
+        # Set the crypted password directly in shadow file
+        sed -i "s|^root:.*|root:$CRYPTED_PASS|" "$TARGET_MOUNT/etc/shadow"
+    elif [ -n "$ROOT_PASS" ]; then
         print_status "Setting root password from preseed file..."
         log "Setting root password from preseed: ${ROOT_PASS:0:10}..."
         # Set the password using chpasswd

set_root_password.sh

@@ -10,3 +10,7 @@ CRYPTED=$(openssl passwd -1 "$PASSWORD")
 
 sed -i "s|d-i passwd/root-password password changeme|d-i passwd/root-password-crypted password $CRYPTED|" config/preseed/debian-installer.cfg
 sed -i "/d-i passwd\/root-password-again password changeme/d" config/preseed/debian-installer.cfg
+
+# Also update the live system preseed file that the auto-installer uses
+sed -i "s|d-i passwd/root-password password changeme|d-i passwd/root-password-crypted password $CRYPTED|" config/includes.binary/preseed.cfg
+sed -i "/d-i passwd\/root-password-again password changeme/d" config/includes.binary/preseed.cfg
\ No newline at end of file