Fix Full Companion terminal diagnostics

docs/cli_command_availability.md

@@ -47,6 +47,8 @@ over the normal binary USB, BLE, or TCP connection:
 
 | Command | Availability |
 |---|---|
+| [`board`](cli_commands.md#show-the-hardware-name) | Every Companion text terminal and command `0x42` |
+| [`memory`](#memory) | ESP32 Full Companion text terminal and command `0x42` |
 | [`get/set radio.rxgain`](cli_commands.md#view-or-change-this-nodes-rx-boosted-gain-mode-sx12xx-and-lr1110-v1141) | Companion with a supported radio |
 | [`get/set radio.fem.rxgain`](cli_commands.md#view-or-change-the-lora-fem-receive-path-gain-state-on-supported-boards) | Companion on a board with controllable LoRa FEM LNA |
 | [`get/set wifi.powersave`](cli_commands.md#browser-configuration-portal-esp32-repeater-and-room-server) | ESP32 WiFi Companion; active transport constraints still apply |

docs/companion_radio_full.md

@@ -372,9 +372,11 @@ The terminal supports Companion chat commands, including `channels`,
 `channel <name-or-slot> <message>`, remote administration with
 `login <admin-password>` and `cmd <remote-command>`, and routed
 `trace [recipient-name-or-prefix]`, plus local `ota`, `tempradio`, and
-`normalradio` controls. ESP32 builds also provide local
-WiFi credential, status, WebConfig, CLI-tab, and power-save controls. Every
-Full Companion provides persistent `get/set usb.logging` and starts with
+`normalradio` controls. `board` reports the exact hardware target. ESP32 Full
+Companion also provides `memory`, which reports heap, internal allocation,
+PSRAM, and offline-queue usage; it is omitted from non-ESP32 help. ESP32 builds
+also provide local WiFi credential, status, WebConfig, and power-save controls.
+Every Full Companion provides persistent `get/set usb.logging` and starts with
 logging off on a fresh installation.
 
 ### ESP32 single USB serial port