Let a card's back button take its taps again (0.2.56)

Since firmware 0.2.44 the back arrow of the brightness, colour and climate
cards barely responded, and so did the button at the top right of the
climate card. on_boot created the settings hold strip after the YAML cards
on home_page, so the transparent strip lay on top of them and LVGL's hit
test gave it the taps in the top bar region.

attach_hold now takes the first card as `below` and moves the strip and its
fill line to that index, under every card. Holding the top bar opens the
settings page from the tile pages only. The dim wake overlay was never
affected: apply_screen_settings moves it to the foreground when dimmed.

Checked with 215 Python and 14 C++ tests, generate_packages --check, and
ESP32 builds of both Easy profiles. Firmware 0.2.48.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tests/test_settings_page.py

@@ -108,6 +108,22 @@ class Firmware(unittest.TestCase):
                 self.assertGreaterEqual(x, band, name)
                 self.assertLessEqual(x + int(hold), width - band, name)
 
+    def test_the_hold_strip_lies_under_every_card(self):
+        # Firmware 0.2.44-0.2.47 created the strip after the cards, so it lay on top of them: a card's
+        # back button and its action at the top right lost their taps to it. (The wake overlay of a dimmed
+        # screen was not affected: apply_screen_settings moves it to the foreground.)
+        self.assertIn('lv_obj_move_to_index(hold_area, lv_obj_get_index(below));', SCREEN)
+        cards = ('brightness_overlay', 'color_detail_overlay', 'climate_detail_overlay', 'climate_mode_overlay',
+                 'dim_wake_overlay')
+        for name, text in self.profiles.items():
+            call = re.search(r'settings_screen::attach_hold\(id\(home_page\)->obj, [^;]*, id\((\w+)\)\);', text)
+            self.assertTrue(call, f'{name}: attach_hold gets no card to stay under')
+            self.assertEqual(call[1], cards[0], name)
+            page = text[text.index('- id: home_page'):]
+            positions = [page.index(f'id: {card}\n') for card in cards]
+            self.assertEqual(positions, sorted(positions), f'{name}: {cards[0]} must be the first card on the page')
+            self.assertLess(page.index('id: page_next\n'), positions[0], f'{name}: the page controls stay under the strip')
+
 
 if __name__ == '__main__':
     unittest.main()