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/templates/ols-extapp.mustache

@@ -0,0 +1,23 @@
+# LSPHP {{php_version}} External App Configuration - WordOps {{release}}
+# DO NOT MODIFY, ALL CHANGES WILL BE LOST AFTER AN WordOps (wo) UPDATE
+
+extprocessor lsphp{{short_version}} {
+  type                    lsapi
+  address                 uds://tmp/lshttpd/lsphp{{short_version}}.sock
+  maxConns                10
+  env                     PHP_LSAPI_CHILDREN=10
+  env                     LSAPI_AVOID_FORK=200M
+  initTimeout             60
+  retryTimeout            0
+  pcKeepAliveTimeout      60
+  respBuffer              0
+  autoStart               2
+  path                    /usr/local/lsws/lsphp{{short_version}}/bin/lsphp
+  backlog                 100
+  instances               1
+  priority                0
+  memSoftLimit            2047M
+  memHardLimit            2047M
+  procSoftLimit           1400
+  procHardLimit           1500
+}