feat: convert WordOps from Nginx to OpenLiteSpeed + LSPHP + LSCache

Complete conversion of the WordOps stack from Nginx + PHP-FPM to
OpenLiteSpeed + LSPHP + LSCache. This is a full rewrite across all 7
phases of the codebase:

- Foundation: OLS paths, variables, services, removed pynginxconfig dep
- Templates: 11 new OLS mustache templates, removed nginx-specific ones
- Stack: stack_pref, stack, stack_services, stack_upgrade, stack_migrate
- Site: site_functions, site, site_create, site_update
- Plugins: debug, info, log, clean rewritten for OLS
- SSL/ACME: acme.sh deploy uses lswsctrl, OLS vhssl blocks
- Other: secure, backup, clone, install script

Additional features:
- Debian 13 (trixie) support
- PHP 8.5 support
- WP Fort Knox mu-plugin integration (wo secure --lockdown/--unlock)
- --nginx CLI flag preserved for backward compatibility

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

wo/cli/plugins/clean.py

@@ -22,12 +22,12 @@ class WOCleanController(CementBaseController):
         stacked_on = 'base'
         stacked_type = 'nested'
         description = (
-            'Clean NGINX FastCGI cache, Opcache, Redis Cache')
+            'Clean LSCache, Opcache, Redis Cache')
         arguments = [
             (['--all'],
                 dict(help='Clean all cache', action='store_true')),
             (['--fastcgi'],
-                dict(help='Clean FastCGI cache', action='store_true')),
+                dict(help='Clean LSCache', action='store_true')),
             (['--opcache'],
                 dict(help='Clean OpCache', action='store_true')),
             (['--redis'],
@@ -63,18 +63,18 @@ class WOCleanController(CementBaseController):
 
     @expose(hide=True)
     def clean_fastcgi(self):
-        if (os.path.isdir("/var/run/nginx-cache") and
-           os.path.exists('/usr/sbin/nginx')):
-            Log.info(self, "Cleaning NGINX FastCGI cache")
-            WOShellExec.cmd_exec(self, "rm -rf /var/run/nginx-cache/*")
-            WOService.restart_service(self, 'nginx')
+        if (os.path.isdir("/tmp/lshttpd/") and
+           os.path.exists(WOVar.wo_ols_bin)):
+            Log.info(self, "Cleaning LSCache")
+            WOShellExec.cmd_exec(self, "rm -rf /tmp/lshttpd/cache/*")
+            WOService.restart_service(self, 'lsws')
         else:
-            Log.error(self, "Unable to clean FastCGI cache", False)
+            Log.error(self, "Unable to clean LSCache", False)
 
     @expose(hide=True)
     def clean_opcache(self):
         opcache_dir = '/var/www/22222/htdocs/cache/opcache/'
-        if (os.path.exists('/usr/sbin/nginx') and
+        if (os.path.exists(WOVar.wo_ols_bin) and
                 os.path.exists(
                     '/var/www/22222/htdocs/cache/opcache')):
             try: