Use modern installer & create strong temp password for admin

installer.sh

@@ -96,8 +96,7 @@ echo "[*] Generating LocalSettings.php..."
 
 WIKI_NAME="My Wiki"
 ADMIN_USER="admin"
-# WARNING: Default admin password is 'changeme'. User must change it immediately.
-ADMIN_PASS="changeme"
+ADMIN_PASS=$(openssl rand -base64 12)
 
 ### APPEND ADDITIONAL SETTINGS ###
 LSETTINGS="$MW_DIR/LocalSettings.php"
@@ -116,21 +115,10 @@ cat >> "$LSETTINGS" <<EOF
 \$wgMainCacheType = CACHE_REDIS;
 \$wgMemCachedServers = ["127.0.0.1:6379"];
 
-# Allow temporary simple admin password for first-run activation
-\$wgMinimalPasswordLength = 6;
-\$wgPasswordPolicy = [
-    'policies' => [
-        'default' => [
-            'MinimalPasswordLength' => 6,
-            'PasswordCannotBePopular' => false,
-        ],
-    ],
-];
-
 EOF
 
 cd "$MW_DIR"
-php maintenance/install.php \
+php maintenance/run.php install \
   --dbname="$DB_NAME" \
   --dbuser="$DB_USER" \
   --dbpass="$DB_PASS" \
@@ -272,6 +260,8 @@ echo "Admin login:"
 echo "  Username: $ADMIN_USER"
 echo "  Password: $ADMIN_PASS"
 echo
+echo "Change the password with /activate/"
+echo
 echo "File uploads enabled, Vector skin and core extensions preloaded."
 echo "Redis enabled for caching. PHP limits adjusted for media upload."
 echo "Self-signed cert installed. Let's Encrypt ready but not configured."