Follow-up to #50767, which redacted the chat-platform (_approval_notify_sync)
and SSE/API (_approval_notify) approval transports. The TUI JSON-RPC transport
is the third egress and was missed: three register_gateway_notify callbacks in
tui_gateway/server.py emitted the raw approval_data — including the unredacted
command Tirith flagged — straight to the TUI client via _emit.
Route all three registrations through a new module-level _emit_approval_request()
helper that redacts payload['command'] via the shared
gateway.run._redact_approval_command seam before emitting, matching the pattern
used for the other two transports. Completes the whole-bug-class fix for #48456.
Tests: assert the helper emits a redacted command (real credential pattern),
handles missing/None command, and a wiring guard that no registration emits the
raw payload directly (only the helper may). Both mutation-checked.
The #48456 fix series originated from @liuhao1024's #48462 — credit to them for
the original report and chat-platform fix; this completes the remaining transport.
Co-authored-by: liuhao1024 <sunsky.lau@gmail.com>
c080b2dc3e