add streaming responses, file transfer, remote deploy

- Streaming: use claude --output-format stream-json, edit TG message
  every 5s with progress, show tool use status during execution,
  ◎ cursor indicator while processing
- File transfer: download user uploads to ~/incoming/, scan
  ~/outgoing/{sid}/ for new files after claude completes
- Error handling: wrap post-auth logic in handle_inner, all errors
  reply to user instead of silently failing
- Remote deploy: make deploy-hera via SSH, generate service from
  template with dynamic PATH/REPO
- Service: binary installed to ~/bin/noc, WorkingDirectory=%h
- Invoke claude directly instead of ms wrapper
- Session state persisted to disk across restarts

.gitignore

@@ -1,4 +1,5 @@
 /target
 config.yaml
+config.hera.yaml
 state.json
 noc.service