chore: 清除最后5处硬编码qq引用（注释+配置白名单）

backend/platform-bridge/internal/bridge/router.go

@@ -128,7 +128,7 @@ func (r *PlatformRouter) SetMessageHandler(h MessageHandler) {
 }
 
 // RouteMessage converts a platform message to unified, checks permissions, and dispatches.
-// adapterKey is the config name (e.g., "qq", "qq-home") used to look up the adapter instance.
+// adapterKey is the config name (e.g., "obv11", "obv11-home") used to look up the adapter instance.
 func (r *PlatformRouter) RouteMessage(adapterKey string, rawMsg interface{}) (*UnifiedResponse, error) {
 	a, err := r.GetAdapter(adapterKey)
 	if err != nil {
@@ -156,7 +156,7 @@ func (r *PlatformRouter) RouteMessage(adapterKey string, rawMsg interface{}) (*U
 	}
 
 	// Resolve identity (nil for unknown users; caller decides routing).
-	// Use platform type (e.g. "qq") for identity resolution, not adapter key.
+	// Use platform type (e.g. "obv11") for identity resolution, not adapter key.
 	identity := r.mapper.ResolveOrNil(a.PlatformName(), unified.SenderID)
 	if identity != nil {
 		unified.SenderID = identity.CyreneUser