Every `letta remote` session now writes a log file to
~/.letta/logs/remote/{timestamp}.log regardless of --debug mode.
All WS events, lifecycle transitions, and errors are captured.
--debug still prints to console on top. Log path printed at startup.
Old logs auto-pruned (keeps last 10).
🐛 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
Registration HTTP logic was duplicated three times across listen.ts
(initial + re-register) and listen.tsx. Extracted into
listen-register.ts with proper error handling for non-JSON responses,
response shape validation, and 5 focused tests. Removes ~110 lines
of duplication.
🐛 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
