Offband offband-v1.1.1

Urgent patch: the RAK3401 1W companion radio was dead on v1.1.0. Still on the
MeshCore 1.16.0 base.

Fixed

• RAK3401 1W companion radio dead on Offband (no TX/RX). Offband's GPS support
  (#104) probed a pin that doubles as the radio's power-enable on the RAK3401; with no
  GPS attached it left the radio unpowered, so it couldn't transmit or receive. GPS is
  now disabled on the RAK3401 companion build until the probe is fixed. (#211)

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Which file do I download?

File	What it is	When to use it
*-merged.bin (ESP32 — Heltec V3/V4, XIAO)	Full image — bootloader + partition table + app in one, flashed at 0x0 after a chip erase. Self-contained, works on a blank chip.	First install / clean setup. In a web flasher this is the "Full Firmware" option.
*.bin (ESP32)	App only — flashed at the app offset (0x10000); the bootloader must already be on the chip.	Updating an existing node — OTA / "Update Only." Keeps the device identity + WiFi/MQTT config.
*.uf2 (nRF52 — RAK, T-Echo, XIAO nRF52)	Complete self-contained image.	First install and updates — double-tap reset, then drag-drop onto the USB drive. (nRF52 has no merged/app split.)

⚠️ ESP32: the app-only *.bin will not boot if flashed at 0x0 — use *-merged.bin for a fresh install. A full erase / "Full Firmware" wipes the device's identity + saved config, so use it only for a first install or recovery, never a routine update.

What's Changed

• docs(#192): Photon-1W (MeshSmith) support design-of-record by @Strycher in #195
• chore(#197): CLAUDE.md -- record no-upstream-merge policy by @Strycher in #198
• fix(#89): exclude SerialBLEInterface.cpp from Xiao_S3_WIO USB companion by @Strycher in #200
• fix(rak3401): companion GPS probe floats WB_IO2, killing the 1W radio (#211) by @Strycher in #212

Full Changelog: offband-v1.1.0...offband-v1.1.1