Scanner: SSO login, 2 scan modes (camera/security key), sound feedback, order details, force validation, staff/exposant badges

- Add SSO login button to scanner PWA with Keycloak redirect flow via session state
- Add manual scan mode via security key (16 chars) alongside QR camera scan
- Add audio feedback: good (accepted), warning (already scanned), refused sounds
- Add unique scan counter per reference (no double counting same ticket)
- Add order details display in scan results (order number, email, total, items)
- Add force validation button for refused tickets (organizer/ROLE_ROOT only), sends email notification
- Add already_scanned warning only for same-day scans, exit_definitive only same day
- Staff and exposant tickets always validate regardless of state

API: ROLE_ROOT access to all events, categories, billets, and scan endpoints

- ROLE_ROOT bypasses ownership checks on all /api/live/* endpoints
- ROLE_ROOT can login via API (email/password and SSO)
- Scan API accepts securityKey parameter in addition to reference
- Scan response includes billetType, buyerEmail, and full order details with items

Event management: tickets tab, staff/exposant accreditations, attestation PDF

- Add Tickets tab listing all sold tickets with search, download PDF, resend email, cancel actions
- Add Staff/Exposant accreditation form in Invitations tab, generates dedicated non-buyable billet
- Add Attestation tab to generate sales certificate PDF with category/billet selection
- PDF billet template shows STAFF/EXPOSANT badge with distinct colors (black/purple)
- Exclude invitations from all financial stats (event stats, admin dashboard, organizer finances)
- Fix sold counts to exclude invitations in categories recap
- Use actual Stripe fee parameters instead of hardcoded values in commission calculations
- Add commission detail breakdown (E-Ticket + Stripe) in categories and stats tabs

Admin: download tickets for orders

- Add download button on admin orders page (single PDF or ZIP for multiple tickets)

Scanner PWA fixes: CSP (unpkg -> jsdelivr), service worker scope (/scanner/)

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

tests/Controller/ScannerControllerTest.php

@@ -9,7 +9,7 @@ class ScannerControllerTest extends WebTestCase
     public function testScannerPageReturnsSuccess(): void
     {
         $client = static::createClient();
-        $client->request('GET', '/scanner');
+        $client->request('GET', '/scanner/');
 
         self::assertResponseIsSuccessful();
         self::assertSelectorTextContains('title', 'E-Ticket Scanner');
@@ -32,7 +32,7 @@ class ScannerControllerTest extends WebTestCase
     public function testScannerPageIsAccessibleWithoutAuth(): void
     {
         $client = static::createClient();
-        $client->request('GET', '/scanner');
+        $client->request('GET', '/scanner/');
 
         self::assertResponseIsSuccessful();
         self::assertResponseStatusCodeSame(200);