refactor: extract inline JS into app/ modules, remove dead overtype-webcomponent

- Remove overtype-webcomponent.min.js (zero references)
- Extract copyLogContent + fallbackCopy + HTMX tab-updater → app/admin-logs.js
  (removes duplicate from both system.php and parametres.php)
- Extract copyUrl → app/clipboard.js (shared by acces.php)
- Extract tag/language pill-search logic → app/pill-search.js
  Generalized with data-pill-search attributes, auto-inits via
  DOMContentLoaded + htmx:afterSwap
- Extract access-request form handler → app/access-request.js
  (was inline in templates/public/tfe.php)

Files created: admin-logs.js, clipboard.js, pill-search.js, access-request.js
Files modified: 9 templates/controllers to drop inline scripts and
  reference external JS files

app/public/admin/contenus-edit.php

@@ -70,7 +70,7 @@ $extraJsInline = '';
 
 if ($editType === 'page' || $editType === 'about_page') {
     $initialContent = $page["content"] ?? "";
-    $extraJs = ["/assets/js/overtype.min.js"];
+    $extraJs = ["/assets/js/vendor/overtype.min.js"];
     $extraJsInline = <<<'JS'
 var OT = window.OverType.default || window.OverType;
 var hidden = document.getElementById('content');
@@ -83,7 +83,7 @@ var editor = new OT(document.getElementById('editor'), {
 JS;
 } elseif ($editType === 'form_help') {
     $initialContent = $formHelpContent;
-    $extraJs = ["/assets/js/overtype.min.js"];
+    $extraJs = ["/assets/js/vendor/overtype.min.js"];
     $extraJsInline = <<<'JS'
 var OT = window.OverType.default || window.OverType;
 var hidden = document.getElementById('content');