pub const S2C_TERM_CWD_EVENT: u8 = 0x0F;Expand description
Unsolicited working-directory push: [0x0F][pty_id:2][cwd:N].
cwd is the remainder of the message (no length prefix, like S2C_TITLE):
an absolute UTF-8 path of at most TERM_CWD_MAX bytes.
Broadcast to every connected client when the cwd reported by shell
integration (OSC 7) changes; identical per-prompt re-reports are not
re-sent. Shells without OSC 7 integration never trigger this — clients
keep the C2S_TERM_CWD poll as the fallback
(docs/protocol.md, “Working directory tracking”).