Technician tool v0.4

Imported from the Google Drive folder 004-technician_tool/v0.4.

firmware/firmware.toml

@@ -0,0 +1,11 @@
+# Official firmware images the technician tool may flash.
+# Boxes normally receive new firmware over OTA; this is the factory image a
+# box updates itself from once it is online. Add a new image only when the
+# firmware team releases one: copy the .bin here and add an entry with its
+# SHA-256 (the tool refuses files that do not match).
+
+[[image]]
+file = "new_system.bin"
+sha256 = "1d58a8f4bb60f66009bd6df32e6e860c545c0c668de955af60d049ee3b9a212d"
+name = "v1.0 factory image (built Jun 29 2026)"
+notes = "Official factory image. Once online, the box registers for OTA and updates itself."