The update-channel UI (the "Get test builds (beta)" toggle + the Install-update
button) is gated on a non-empty FIRMWARE_OTA_ENV. That is set per-env in
platformio.ini for the 8 S3 boards but was never set for the P4 IDF build, so the
whole update UI was hidden — P4 testers had no way to opt into beta and stayed
stuck reading the stable channel (the beta_49 "no update, 48 up to date" report).
- tdisplay_p4 CMakeLists: define FIRMWARE_OTA_ENV so the UI is shown.
- UITask.cpp: add a P4 branch to OTA_BIN_NAME so the download URL points at
wadamesh-tdisplay-p4[-lcd].bin, not the V4-TFT bin. AMOLED vs LCD split on
HAS_TDP4_LCD.
The C6 WiFi shim already routes HTTPClient/Update.h and the P4 partition table has
dual ota_0/ota_1 slots, so the OTA path itself was wired; this only unhides and
correctly targets it. Builds green on P4 (AMOLED) + V4-TFT. On-device toggle/OTA
test still pending (P4 dropped off USB, needs a power cycle).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
