Update deps and ROADMAP.md

Author: andreogle

book/docs/roadmap.md

@@ -48,17 +48,13 @@ Monetization, access control, and real-time data delivery.
 The current `mode: stream` sends one event per connection. The next iteration holds the connection open and pushes
 multiple signed events as the upstream data changes:
 
-- **Continuous signed updates**: the airnode re-queries the upstream API on an interval (or in response to upstream
-  changes) and pushes each new signed result as an SSE event. Each event runs through the full plugin pipeline and
-  carries its own EIP-191 signature.
-- **Upstream proxy streaming**: if the upstream API itself supports streaming (chunked transfer encoding, SSE, or
-  WebSocket), the airnode proxies each chunk -- signing and forwarding incrementally rather than waiting for a complete
-  response.
+- **Continuous signed updates**: the airnode re-queries the upstream API on an interval and pushes each new signed
+  result as an SSE event. Each event is a complete signed response that ran through the full plugin pipeline and
+  carries its own EIP-191 signature -- partial responses are never sent.
 - **EventSource reconnection**: SSE has built-in automatic reconnection. Clients that disconnect and reconnect receive
-  the next signed update without any client-side retry logic. The `done: true` field in the event payload distinguishes
-  the final event from intermediate updates.
+  the next signed update without any client-side retry logic.
 - **Backpressure and flow control**: when the upstream produces data faster than the client consumes it, the server
-  buffers or drops stale events (keeping only the latest signed value) to prevent unbounded memory growth.
+  drops stale events (keeping only the latest signed value) to prevent unbounded memory growth.
 
 This turns an endpoint into a real-time signed data stream without changing client code -- existing `EventSource`
 clients that work with the single-event implementation will automatically receive continuous updates when the server