750 GDEY075T7: mark hardware-verified

First-flash success on the bench - test pattern renders correctly on the
real 7.5" 800x480 panel, no hand-tuning. Wire log confirms the UC8179
init, 0x90 window, 48000-byte 0x13 burst, double-init + 0x12 refresh, and
a clean ~1.6s busy wait with no abort.

components/gxepd2/display.py

@@ -65,7 +65,7 @@ PANELS = {
     "GxEPD2_213c_GDEY0213F52": Panel("PANEL_213C_GDEY0213F52", "GDEY0213F52", "JD79676", "4-color", "verified"),
     "GxEPD2_426_GDEQ0426T82": Panel("PANEL_426_GDEQ0426T82", "GDEQ0426T82", "SSD1677", "mono", "verified"),
     "GxEPD2_583_GDEQ0583T31": Panel("PANEL_583_GDEQ0583T31", "GDEQ0583T31", "UC8179", "mono", "verified"),
-    "GxEPD2_750_GDEY075T7": Panel("PANEL_750_GDEY075T7", "GDEY075T7", "UC8179", "mono", "structural"),
+    "GxEPD2_750_GDEY075T7": Panel("PANEL_750_GDEY075T7", "GDEY075T7", "UC8179", "mono", "verified"),
     "GxEPD2_290c_GDEY029F51": Panel("PANEL_290C_GDEY029F51", "GDEY029F51", "JD79667", "4-color", "structural"),
     "GxEPD2_579c_GDEY0579F51": Panel("PANEL_579C_GDEY0579F51", "GDEY0579F51", "HX8717", "4-color", "verified"),
     # Diagnostic variant: the 396x272 master region as a self-contained panel.