dangernoodle-io / breadboard / 28341865267

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feat(bb_sink_ws): add suspend/resume to drop /ws clients during TLS window (#591)

- add bb_websocket_close_client(server, fd) wrapper to bb_websocket: espidf impl
  wraps httpd_sess_trigger_close; host impl is a no-op returning bb_ok; stub added
  to !config_httpd_ws_support section returning bb_err_unsupported
- add bb_sink_ws_suspend() / bb_sink_ws_resume() to public api in bb_sink_ws.h:
  suspend closes all active /ws client sockets and clears sub tables to reclaim
  heap during a tls handshake window; resume re-enables broadcast sends; idempotent
- espidf bb_sink_ws.c: walk bb_websocket_max_fd on suspend, close each active fd
  via bb_websocket_close_client + client_sub_clear; gate ws_log_pump broadcast on
  !s_suspended so log pump keeps draining the queue without hammering closed fds
- host bb_sink_ws.c: same suspend/resume logic; s_suspended gates broadcast_filtered
  so sends are skipped while suspended; s_suspended reset in bb_sink_ws_reset_for_test
- add 3 host tests: suspend clears clients (post-suspend broadcast delivers to none),
  suspend is idempotent (second call bb_ok no crash), resume clears flag (delivers again
  after re-subscribe)
- breadboard-only; tm wire-in and b1-410 log->ws bridge deferred

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

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