TankSync v3.6.7 — hub RX display redesign + LoRa signal scale

RX-only firmware (display/LED/web) + PWA RSSI scale. TX unchanged. WiFi/LoRa/
reception core byte-for-byte unchanged. Full-circle water, OTA screen (web-UI +
manual + demo) with 24-LED halo progress, flow-state + signal on the hero,
surface-LED breathe, post-reboot '11d ago' -> '--' fix. (esp32/DevKit variant
guarded — no GC9A01 there.)

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Downloads (every variant for this firmware version)

Transmitter — ESP32-C3 SuperMini

• …-transmitter-lora-esp32c3-<tag>.bin — LoRa SKU (RYLR998 module)
• …-transmitter-lite-espnow-esp32c3-<tag>.bin — Lite SKU (ESP-NOW, built-in radio, no module)

Receiver / Hub

• …-receiver-esp32-<tag>.bin — ESP32 DevKit
• …-receiver-esp32s3-<tag>.bin — ESP32-S3 SuperMini

Each variant ships two images:

• plain .bin — OTA app image, flash at 0x10000, or use the one-click browser flasher / in-app OTA.
• …-full.bin — full-flash image for a fresh/blank board, flash at 0x0 with esptool: esptool.py write_flash 0x0 <file>-full.bin.