Add conformite page, SonarQube badge proxy, coverage fixes, and code quality

- Add /conformite page: PSD2/3DS/Stripe, SonarQube badges, CI/CD, security
- Create SonarBadgeController proxy to serve SonarQube badges without exposing token
- Store SonarQube badge token in ansible/vault.yml instead of env files
- Add Meilisearch coverage tests: search with results, search error, sync, delete
- Fix MeilisearchService delete catch block with comment
- Fix ESLint: use globalThis.confirm instead of window.confirm
- Fix accessibility: add for/id attributes to buyer creation form labels
- Add conformite link to site footer
- Add SonarBadgeControllerTest and LegalControllerTest for /conformite

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

templates/base.html.twig

@@ -162,6 +162,7 @@
                     <a href="{{ path('app_rgpd') }}" style="font-size:10px;padding:0.25rem 0.5rem;" class="font-black uppercase bg-gray-900 text-white hover:bg-indigo-600 transition-colors">Politique RGPD</a>
                     <a href="{{ path('app_hosting') }}" style="font-size:10px;padding:0.25rem 0.5rem;" class="font-black uppercase bg-gray-900 text-white hover:bg-indigo-600 transition-colors">Hebergement</a>
                     <a href="{{ path('app_tarifs') }}" style="font-size:10px;padding:0.25rem 0.5rem;" class="font-black uppercase bg-gray-900 text-white hover:bg-indigo-600 transition-colors">Tarifs</a>
+                    <a href="{{ path('app_conformite') }}" style="font-size:10px;padding:0.25rem 0.5rem;" class="font-black uppercase bg-gray-900 text-white hover:bg-indigo-600 transition-colors">Conformite</a>
                 </div>
             </div>
         </div>