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/acces.php

@@ -29,6 +29,7 @@ extract($vars);
 $pageTitle = 'Accès';
 $isAdmin   = true;
 $bodyClass = 'admin-body';
+$extraJs   = ['/assets/js/app/clipboard.js'];
 
 require_once APP_ROOT . '/templates/head.php';
 echo '<link rel="stylesheet" href="/assets/css/file-access.css">';