Add Typed SSH Service Controls

Provide admin-only SSH status plus generation-safe start, stop, and
single-session disconnect operations through the bounded dispatcher.
Include
Settings UI coverage, lifecycle safeguards, and host-side regression
tests.

docs/agent/code-map.md

@@ -118,6 +118,8 @@ This is a semantic map, not a complete file inventory. Start here, then read the
 
 ## SSH
 
+- **8D.19 first service slice:** `web_ssh_settings.{c,h}` adds optional admin-only GET `/api/settings/ssh`, GET/POST `/api/settings/ssh-operation`; existing dispatcher queues only IDs to one login-bound slot. `ssh_transport_get_management_snapshot()` copies published state without owner wait/stack scan; `ssh_transport_manage_current()` checks saturated service generation under existing command mutex and exact session ID under SSH lock before canonical lifecycle/external-close admission. Exhausted session slots retire instead of wrapping. `web_ui.c` adds confirmed SSH-only Settings, sticky stale selection,15-second requests/manual Check Result/Refresh.36 handlers/six sockets/no new tasks/timers/depth/stacks/assets; CPU160 and8D.18 preserved. Tests `tests/ssh_management/run.py`, cookie `--ssh`, dispatcher, lifecycle27 and UI143. Contracts/resources/remaining8D.19 service audit/target checks: `docs/phase8d19_implementation.md`. SSH slice implemented/host/build verified; parent review/target sign-off pending, not full8D.19.
+
 **Responsibility:** authenticate SSH, route users to serial and administrators to the command dispatcher, and own wolfSSH lifecycle.
 
 - Files: `src/ssh_transport.{h,c}`, `src/ssh_security.{h,c}`, `src/ssh_console.{h,c}`