Add meck_audio_ble_fastlut test env (register waveform, 9 frames)

variants/lilygo_tdeck_pro/platformio.ini

@@ -138,6 +138,50 @@ lib_ignore =
   AsyncTCP
   ESPAsyncWebServer
 
+; ---------------------------------------------------------------------------
+; EXPERIMENT: fast e-ink partial refresh on a register waveform. Identical to
+; meck_audio_ble except the panel driver is the vendored copy in
+; src/helpers/ui/GxEPD2_310_GDEQ031T10_FAST, which runs every partial refresh
+; on the register LUT that bitbank2/bb_epaper uses for this panel instead of
+; the factory OTP waveform (one FAST_LUT_FRAMES-frame push per pixel). The
+; driver's default is 12 frames; this env sets 9, the shortest push tested,
+; which measured 244 ms per partial on a T-Deck Max against 652 ms on the
+; factory waveform. Full refreshes are unchanged. Watch the _Update_Part
+; serial lines and judge the picture. Keep meck_audio_ble handy: if the panel
+; misbehaves, power-cycle and flash that.
+; ---------------------------------------------------------------------------
+[env:meck_audio_ble_fastlut]
+extends = LilyGo_TDeck_Pro
+build_flags =
+  ${LilyGo_TDeck_Pro.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=2000
+  -D MAX_GROUP_CHANNELS=40
+  -D BLE_PIN_CODE=123456
+  -D OFFLINE_QUEUE_SIZE=256
+  -D MECK_AUDIO_VARIANT
+  -D MECK_WEB_READER=1
+  -D MECK_OTA_UPDATE=1
+  -D EINK_FASTLUT_EXPERIMENT=1
+  -D FAST_LUT_FRAMES=9
+  -D FIRMWARE_VERSION='"Meck v1.14.FASTLUT"'
+build_src_filter = ${LilyGo_TDeck_Pro.build_src_filter}
+  +<helpers/esp32/*.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+  +<helpers/ui/GxEPDDisplay.cpp>
+  +<helpers/ui/GxEPD2_310_GDEQ031T10_FAST.cpp>
+lib_deps =
+  ${LilyGo_TDeck_Pro.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+  https://github.com/schreibfaul1/ESP32-audioI2S.git#2.0.6
+  bitbank2/JPEGDEC
+  https://github.com/sh123/esp32_codec2_arduino.git
+lib_ignore =
+  AsyncTCP
+  ESPAsyncWebServer
+
 ; ---------------------------------------------------------------------------
 ; Audio + BLE companion, HYN touch (T-Deck Pro v1.1 units with the CST3530)
 ;