ui: style all text inputs as light e-ink grooves with dark borders

art/sprites.py

@@ -739,11 +739,20 @@ def hw_selected():
     return c
 
 
+def hw_groove():
+    """PLEDGER 墨水屏输入框凹槽（12×12，九宫格边 2）：浅色底、1 像素深墨边。"""
+    c = Canvas(12, 12)
+    c.rect(0, 0, 11, 11, 'n')
+    c.rect(1, 1, 10, 10, 'P')
+    return c
+
+
 UI_ICONS = {'ui_bank': ui_bank, 'ui_poinbase': ui_poinbase, 'ui_web3': ui_web3}
 UI_ICONS['ui_hw_shell'] = lambda: rounded(32, 7, 'K', 'E', 'z')
 UI_ICONS['ui_hw_bezel'] = lambda: rounded(16, 4, 'n')
 UI_ICONS['ui_hw_paper'] = lambda: rounded(12, 2, 'P')
 UI_ICONS['ui_hw_sel'] = hw_selected
+UI_ICONS['ui_hw_groove'] = hw_groove
 UI_ICONS['ui_hw_ok'] = lambda: hw_button('ok')
 UI_ICONS['ui_hw_no'] = lambda: hw_button('no')