Offband offband-v0.18.1

Fixed

• WiFi password confirmation wording — set wifi.pwd now replies
  wifi.pwd set (N chars entered) instead of wifi.pwd set (length=N), which was
  being misread as a 17-character maximum. The reply reports the length of what was
  entered (never the secret PSK); it is not a cap. WiFi passwords accept the full
  WPA2 range (8–63 chars).

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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

• fix(observer): wifi.pwd confirmation wording (0.18.1) by @Strycher in #139

Full Changelog: offband-v0.18.0...offband-v0.18.1