• src/ssh/README.md api-design-4254.md

    From Deucе@VERT to Git commit to main/sbbs/master on Sun Mar 22 10:47:22 2026
    https://gitlab.synchro.net/main/sbbs/-/commit/236171ada619eca763af9d4d
    Modified Files:
    src/ssh/README.md api-design-4254.md
    Log Message:
    DeuceSSH: update README and design doc for latest API changes

    README: add session_write_ext, session_send_signal to channel I/O
    list. Document channel close semantics (per-direction, no auto-
    reciprocal CLOSE). Update demux thread section (EOF/CLOSE flags,
    window-change callback, session_stop). Rewrite thread safety section
    for demux model (replaces old conn_recv/conn_send_data references).

    api-design-4254.md: mark all new items as implemented (write_ext,
    signals, close hardening, OPEN_FAILURE, API cleanup, thread lifetime,
    static buffers).

    Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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