fix: ignore npm registry audit 410 error in CI

npm retired the /-/npm/v1/security/audits endpoint, causing
pnpm audit to fail with 410 on every CI run. Use the built-in
--ignore-registry-errors flag so the audit still runs when the
registry is available but doesn't block CI when it's down.

Author: ayoub3bidi

.github/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
         run: pnpm format:check
 
       - name: Audit production dependencies
-        run: pnpm audit --prod --audit-level high
+        run: pnpm audit --prod --audit-level high --ignore-registry-errors
 
   # Job 2: Unit tests with coverage
   # Node 24.x matches package.json engines and the Quality / Build jobs (tests failed on 20.x + Vitest forks).