Wi-Fi over USB tab for firmware with the USB console (v13)

Writes / reads / removes the box's Wi-Fi over the serial port with the
usb_console commands (kota ping, wifi set|get|clear, health) and follows
the box through the restart until it joins the network. The password is
sent hex-encoded and never logged.

firmware/ now holds merged-binary-v13.bin (build 3ae273ec) instead of the
previous 1.0.16 build; error_ids.csv synced with the firmware.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/CHANGES-v0.10.md

@@ -0,0 +1,14 @@
+# Technician tool v0.10 - changes (draft)
+
+- New tab **Wi-Fi (USB)**: write the Wi-Fi name and password to the box's SD card over the USB cable, without
+  opening the case (firmware usb_console, `kota wifi set`). Shows each step: command support check, stored,
+  restart in Wi-Fi mode, connected with signal strength (polls `kota health`). Also reads the stored network
+  (`kota wifi get`, password never shown) and removes it (`kota wifi clear`, back to Matter).
+- The password is sent hex-encoded, never written to the session log or the service report.
+- Diagnosis: restarts `usb_wifi_set` / `usb_wifi_clear` are intentional (no "unexpected restart"); box
+  self-report shows the stored Wi-Fi network; `cmd health` replies update the health line.
+- firmware/: `merged-binary-v13.bin` (usb_console, build 3ae273ec) replaces `merged-binary.bin` (build 4f10989e,
+  still in git tag v0.9). Note: v13 reports the same version 1.0.16 and compile date as the previous build;
+  the firmware team should bump the version for the next build.
+- error_ids.csv updated from the firmware (E-CON-01).
+- Test that builds the main window (catches start-up errors).