Debug Builds: the console over Wi-Fi (Debug Console, TCP 2323)

cardputer-adv-debug (-DRORO_DEBUG, version +debug) adds a Debug Console:
after a token line, a client gets the last 6 KB of console output, live
lines (ESP-IDF logs included) and the serial commands. The socket task
only queues lines; the main loop runs them. Release builds compile none
of it. The token lives in ~/.config/roro9stack/debug-token, created by
_docker.sh and passed into the container.

All output now goes through `console`, which never waits for USB: a host
that was attached but not reading stalled the main loop up to 2 s per
line. New commands everywhere: info (slots with their versions from NVS,
since the framework stamps its own into each image), tasks, reboot,
boot other, log level, help. scripts/rdbg.py is the client; flash.sh
--debug builds it; CI builds both variants. ADR 0004.

Verified on the device: USB-flashed, then updated over Wi-Fi to a Debug
Build that confirmed on Probation; both slots hold Debug Builds.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT

src/platform/system_info.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <Print.h>
+#include <esp_partition.h>
+
+#include "key_value_store.h"
+
+namespace roro::system_info {
+
+// Why the chip last started: "power-on", "panic", "task watchdog", "brownout"...
+const char* resetReason();
+// True if the last start was a crash or a watchdog, not a power-on or a deliberate restart.
+bool resetWasCrash();
+
+// Firmware, uptime and memory, one fact per line.
+void printSystem(Print& out);
+// Both app slots: which one runs, which boots next, and each one's version and OTA state. Versions
+// come from NVS ("ver_<slot>"): the prebuilt framework stamps every image with its own version.
+void printSlots(Print& out, KeyValueStore& store);
+// Remembers which version the running slot holds (call at boot), or the slot an update just wrote.
+void recordSlotVersion(KeyValueStore& store, const esp_partition_t* slot, const char* version);
+// FreeRTOS tasks: state, priority, lowest free stack, CPU share since boot.
+void printTasks(Print& out);
+
+// Boots the firmware in the other app slot if it holds a valid image (a manual Rollback).
+// Returns an error message; on success it restarts and doesn't return.
+const char* bootOtherSlot();
+
+}  // namespace roro::system_info