The official TS SDK's ndJsonStream hangs indefinitely on prompt()
for sessions with 20+ messages (solve-issue planner). Root cause
appears to be a stream backpressure issue in the SDK's ReadableStream
adapter.
Switch back to readline-based line parsing which reliably receives
all JSON-RPC responses. Also handle session/request_permission
inline (auto-approve, yolo mode equivalent).
Ref #398
xiaoju
844f5438fe