Fix phpMyAdmin Service tab + PHP version save, and DDNS Manager Uninstall

phpMyAdmin has no systemd service of its own (served via existing
nginx+PHP-FPM), so the 'Service' tab always showed 'unknown' and
Start/Restart did nothing (control_module returns 'No service defined'
when mod.service is unset). Removed the Service tab for phpMyAdmin and
made PHP Version the default tab.

phpMyAdmin's PHP-version dropdown checked /usr/bin/php{v} (CLI binary),
but only php{v}-fpm may be installed for non-default versions - leaving
the dropdown empty, currentPhp='', and Save always failing with 'Config
not found or PHP version missing'. Fixed to check
/run/php/php{v}-fpm.sock instead, matching Roundcube's (correct)
detection.

DDNS Manager's App Store entry has check:'echo found' (always
'installed', by design - it's a built-in core feature, not a package).
But this meant the Uninstall button was always shown, and clicking it
ran 'apt-get remove ddclient' (unrelated to the actual DDNS feature,
which is pure VortexPanel code) then the check still said 'found' -
appearing as if uninstall silently failed. Added a 'builtin' flag,
threaded through /api/modules, and hidden the Uninstall button for
built-in modules in favor of a 'Built-in' badge.

Author: BrowserlessAPI

panel/routes/modules.py

@@ -434,6 +434,7 @@ def is_installed(check_cmd):
         'id':'ddns', 'name':'DDNS Manager', 'icon':'🌍', 'category':'DNS',
         'desc':'Dynamic DNS — automatic IP update service (Built-in)',
         'check':'echo found',  # Built-in, always available
+        'builtin':True,
         'versions':[
             {'label':'3.11.2 (Latest)', 'value':'latest'},
         ],
@@ -758,6 +759,7 @@ def list_modules():
             'installedVer': installed_ver,
             'versions': m.get('versions', []),
             'manage': m.get('manage', False),
+            'builtin': m.get('builtin', False),
             'conflict_group': next((g for g,ms in CONFLICT_GROUPS.items() if m['id'] in ms), None),
         })
     return jsonify({'ok':True, 'modules':result})
@@ -1317,7 +1319,7 @@ def fpm_get(key):
             with open(pma_conf) as f: cc = f.read()
             m = _re.search(r'listen\s+(\d+)', cc)
             if m: port = m.group(1)
-        php_versions = [v for v in ['8.5','8.4','8.3','8.2','8.1','8.0','7.4'] if os.path.exists('/usr/bin/php' + v)]
+        php_versions = [v for v in ['8.5','8.4','8.3','8.2','8.1','8.0','7.4'] if os.path.exists(f'/run/php/php{v}-fpm.sock')]
         current_php = ''
         if os.path.exists(pma_conf):
             with open(pma_conf) as f: cc = f.read()

web/static/js/app.js

@@ -1650,7 +1650,7 @@ function modulesPage() {
       // For pages that have dedicated full pages, navigate there
 
       // For all other apps — show the settings modal
-      const defaultTab = {'ddns':'ddns_domains','bind9':'dns_zones','phpmyadmin':'service','roundcube':'rc_overview'}.hasOwnProperty(m.id) ? {'ddns':'ddns_domains','bind9':'dns_zones','phpmyadmin':'service'}[m.id] : 'service';
+      const defaultTab = {'ddns':'ddns_domains','bind9':'dns_zones','phpmyadmin':'php_version','roundcube':'rc_overview'}.hasOwnProperty(m.id) ? {'ddns':'ddns_domains','bind9':'dns_zones','phpmyadmin':'php_version'}[m.id] : 'service';
       this.settingsModal = {
         ...this.settingsModal,
         show: true, mod: m, tab: defaultTab, rcData: {},
@@ -1786,7 +1786,7 @@ function modulesPage() {
         clamav:     ['service','logs'],
         ddns:       ['ddns_domains','ddns_server','ddns_log'],
         bind9:      ['service','dns_zones','dns_records','dns_config','dns_private','switch_version','logs'],
-        phpmyadmin: ['service','php_version','security'],
+        phpmyadmin: ['php_version','security'],
         roundcube:  ['rc_overview','rc_config','rc_php','rc_logs'],
         docker:     ['service','info'],
       };

web/templates/index.html

@@ -1452,7 +1452,8 @@
                           <span x-text="m.loading?'…':'+ Add'"></span>
                         </button>
                       </div>
-                      <button class="btn btn-danger btn-xs" @click="uninstall(m)" :disabled="m.loading" x-show="m.id!=='php'">
+                      <span x-show="m.builtin" class="badge badge-gray" style="font-size:10px">Built-in</span>
+                      <button class="btn btn-danger btn-xs" @click="uninstall(m)" :disabled="m.loading" x-show="m.id!=='php' && !m.builtin">
                         <span x-show="m.loading" class="loading-spinner" style="width:9px;height:9px;border-width:1px"></span>
                         <span x-text="m.loading?'…':'Uninstall'"></span>
                       </button>