Fix delayed transparent startup REQs on websocket open

## Summary Transparent relay startup REQs were only first enqueued after , which left them sitting behind the current ewebsock native read loop until inbound traffic arrived. This caused delayed contacts/bootstrap fetches and black Home on cold start. ## Scope - enqueue transparent REQs while the websocket leg is still - track websocket-leg generation on transparent active legs - replay only on a new websocket leg, not on the initial open after a pre-open enqueue ## Validation - websocket-backed enostr tests for initial-open no-duplicate replay - websocket-backed enostr tests for reconnect replay