Shared e-ink hardware layer: foundation for target-by-target migration off GxEPD2 (#11142)

* Add shared e-ink hardware layer (graphics/eink) alongside legacy drivers

Foundation for a target-by-target migration off the GxEPD2-based
EInkDisplay2/EInkDynamicDisplay/EInkParallelDisplay stack:

- src/graphics/eink/: chipset drivers, panel profiles, backlight helper
  (promoted from the InkHUD driver set, shared by BaseUI and InkHUD)
- src/graphics/BaseUIEInkDisplay: OLEDDisplay adapter driving the new
  layer, with EINK_* compat macros matching EInkDynamicDisplay
- [niche] build helper in platformio.ini; graphics/eink/ excluded from
  arduino_base so unconverted targets are unaffected
- Screen/CannedMessageModule dispatch between the two stacks per env
- InkHUD-specific touch code in TouchScreenImpl1 guarded with
  MESHTASTIC_INCLUDE_INKHUD (no-op today, required once BaseUI variants
  define MESHTASTIC_INCLUDE_NICHE_GRAPHICS without InkHUD)

No variant is converted and no legacy file is removed; every existing
env builds identical firmware.

* Fix clang-format comment alignment in Screen.cpp

* Address review findings in the e-ink driver layer

- Screen.cpp: exclude InkHUD builds from all NicheGraphics BaseUI guards
- BaseUIEInkDisplay: size the OLEDDisplay buffer from its actual indexing
- EInkParallel: defer update() while an async refresh is in flight, honor
  the selected clear mode in the async task, never delete a live task
- ED047TC1: clean up on failed initPanel, fix inverted bbepI2CWrite checks
- UC8175: drop bogus 0x12 soft reset (0x12 is display refresh on UC8175)
- LCMEN2R13EFC1: guard absent reset pin, bound the busy wait
- SSD16XX/SSD1682: build the RAM window from the instance, not statics
- Doc corrections in driver banners and Drivers/README

* SSD16XX/SSD1682: send inclusive Y-end address (height - 1)

* LCMEN213EFC1: adopt the shared wait timeout / fail-through pattern

wait() now bounds the busy poll via Throttle and sets the EInk failed
flag on timeout; sendCommand/sendData fail through like the SSD16XX and
UC8175 drivers. EInk::runOnce clears the flag after the failed cycle.

src/modules/CannedMessageModule.cpp

@@ -34,7 +34,9 @@ extern MessageStore messageStore;
 #if !MESHTASTIC_EXCLUDE_GPS
 #include "GPS.h"
 #endif
-#if defined(USE_EINK) && defined(USE_EINK_DYNAMICDISPLAY)
+#if defined(MESHTASTIC_INCLUDE_NICHE_GRAPHICS) && !defined(MESHTASTIC_INCLUDE_INKHUD)
+#include "graphics/BaseUIEInkDisplay.h" // NicheGraphics-backed BaseUI e-ink adapter
+#elif defined(USE_EINK) && defined(USE_EINK_DYNAMICDISPLAY)
 #include "graphics/EInkDynamicDisplay.h" // To select between full and fast refresh on E-Ink displays
 #endif
 
@@ -1905,7 +1907,9 @@ void CannedMessageModule::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *st
     // Free Text Input Screen
     if (this->runState == CANNED_MESSAGE_RUN_STATE_FREETEXT) {
         requestFocus();
-#if defined(USE_EINK) && defined(USE_EINK_DYNAMICDISPLAY)
+#if defined(USE_EINK) && defined(MESHTASTIC_INCLUDE_NICHE_GRAPHICS) && !defined(MESHTASTIC_INCLUDE_INKHUD)
+        static_cast<NicheGraphics::BaseUIEInkDisplay *>(display)->enableUnlimitedFastMode();
+#elif defined(USE_EINK) && defined(USE_EINK_DYNAMICDISPLAY)
         EInkDynamicDisplay *einkDisplay = static_cast<EInkDynamicDisplay *>(display);
         einkDisplay->enableUnlimitedFastMode();
 #endif