feat: complete glassmorphism redesign across all templates + Keycloak groups auto-provisioning

Templates updated to glassmorphism (40+ files):
- templates/admin/clients/ (create, index): glass cards, input-glass inputs,
  btn-gold buttons, glass table headers, semi-transparent badges
- templates/admin/dashboard.html.twig: glass KPI cards
- templates/admin/profil/index.html.twig: glass form panels
- templates/admin/revendeurs/ (create, edit, index): glass cards and tables
- templates/admin/services/index.html.twig: glass service cards
- templates/admin/status/ (index, manage): glass panels
- templates/admin/sync/index.html.twig: glass panels
- templates/admin/facturation/index.html.twig: glass tables
- templates/admin/membres.html.twig: glass form, checkboxes with esy-* group
  values (esy-web, esy-mail, esy-mailer, esy-analytics, esy-monitor,
  esy-defender, esy-translate, esy-signature, esy-creator, esy-aide,
  esy-meet, esy-tchat, esy-ndd), Keycloak groups column in table,
  available groups section
- templates/admin/stats/index.html.twig: glass KPI cards, glass-gold CA TTC,
  factures emises/payees/impayees cards, services renamed to Esy-*,
  rounded progress bars, bg-gray-200 track backgrounds
- templates/security/ (2fa_email, 2fa_google, forgot_password, set_password,
  set_password_expired): glass headers, glass-heavy cards, input-glass
- templates/legal/ (cgu, cgv, cookie, conformite, hebergement,
  mention_legal, rgpd, tarif): removed thick borders, font-black to
  font-bold, text-3xl to text-2xl headings
- templates/attestation/ (verify, not_found): glass panels
- templates/espace_client/index.html.twig: glass panels
- templates/espace_prestataire/index.html.twig: glass panels
- templates/external_redirect.html.twig: glass card
- templates/status/index.html.twig: glass panels
- templates/email/base.html.twig: gradient gold header, rounded-16px
  container, semi-transparent bg, soft shadow, footer address
- templates/emails/*.html.twig (9 files): removed 4px borders,
  font-weight 900 to 700
- templates/pdf/*.html.twig (4 files): rounded borders, gradient header,
  lighter borders

Keycloak auto-provisioning:
- src/Service/KeycloakAdminService.php: added REQUIRED_GROUPS constant
  (15 groups: siteconseil_admin, siteconseil_member, esy-web, esy-mail,
  esy-mailer, esy-analytics, esy-monitor, esy-defender, esy-translate,
  esy-signature, esy-creator, esy-aide, esy-meet, esy-tchat, esy-ndd),
  ensureRequiredGroups() method that checks existing groups and creates
  missing ones, createGroup() method, getRequiredGroups() static accessor
- src/Controller/Admin/MembresController.php: calls ensureRequiredGroups()
  on page load, shows flash for each auto-created group, fetches user
  groups per member, passes availableGroups to template

Stats controller updated:
- src/Controller/Admin/StatsController.php: services renamed to Esy-*
  (13 services), added factures_emises/payees/impayees KPI data

OAuth fix:
- src/Security/KeycloakAuthenticator.php: removed dd() debug calls,
  restored flash message on auth failure with error detail

Config:
- .env: KEYCLOAK_ADMIN_CLIENT_ID=crm_siteconseil_admin, secret updated
- .env.local: same updates
- ansible/env.local.j2: KEYCLOAK_ADMIN_CLIENT_ID=crm_siteconseil_admin

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

ansible/env.local.j2

@@ -25,7 +25,7 @@ OAUTH_KEYCLOAK_CLIENT_SECRET=kh1WBbnEzcEZVriXmU7IaxizChReHmIx
 OAUTH_KEYCLOAK_URL=https://auth.esy-web.dev
 OAUTH_KEYCLOAK_REALM=master
 SECRET_ANALYTICS={{ analytics_secret }}
-KEYCLOAK_ADMIN_CLIENT_ID=crm-siteconseil-admin
+KEYCLOAK_ADMIN_CLIENT_ID=crm_siteconseil_admin
 KEYCLOAK_ADMIN_CLIENT_SECRET={{ keycloak_admin_client_secret }}
 DOCUSEAL_URL=https://signature.esy-web.dev
 DOCUSEAL_API={{ docuseal_api }}