fix issue with logout url (#112)

* fix(logout): handle logout requests before OIDC initialization

- [x] Add debug logging to logout handler entry point
- [x] Move logout path check before OIDC initialization to enable logout when provider unavailable
- [x] Move excluded URL and SSE checks before initialization wait
- [x] Add debug logging for initialization wait to diagnose hanging requests
- [x] Add test for logout functionality without OIDC provider availability

* feat(logout): implement OIDC backchannel and front-channel logout

- [x] Add logout token validation and backchannel logout handler
- [x] Add front-channel logout handler with iframe support
- [x] Implement session invalidation cache for distributed deployments
- [x] Add comprehensive logout token claim verification (issuer, audience, events, iat, sid/sub)
- [x] Integrate session invalidation checks into authorization flow
- [x] Add configuration options for enabling backchannel/front-channel logout
- [x] Add extensive test coverage for logout flows and edge cases
- [x] Update documentation with logout configuration examples
- [x] Add middleware routing for logout endpoints
- [x] Extend cache manager with session invalidation cache support

Resolves #110

* fixup! feat(logout): implement OIDC backchannel and front-channel logout

* fixup! Merge branch 'main' into fix-issue-with-logout-url

universal_cache.go

@@ -720,22 +720,6 @@ func (c *UniversalCache) SetWithMetadata(key string, value interface{}, ttl time
 	return nil
 }
 
-// GetTyped retrieves a typed value from the cache
-func GetTyped[T any](c *UniversalCache, key string) (T, bool) {
-	var zero T
-	value, exists := c.Get(key)
-	if !exists {
-		return zero, false
-	}
-
-	typed, ok := value.(T)
-	if !ok {
-		return zero, false
-	}
-
-	return typed, true
-}
-
 // TokenCacheOperations provides token-specific operations
 func (c *UniversalCache) BlacklistToken(token string, ttl time.Duration) error {
 	if c.config.Type != CacheTypeToken {