Tidy the standby code around Wake and Sleep (0.2.54)

One rule ends a Sleep: a tap, Wake or an alert. The Auto standby switch
cleared sleep_requested when Home Assistant turned standby off, while
ESP Screens and the settings page on the screen did not; now only
wake_display clears the flag, and apply_screen_settings still wakes a
screen the standby time dimmed.

dim_display no longer checks anything itself (the interval checks Auto
standby, the Sleep button sets the flag). It dims, then runs go_home with
"also on standby" on, otherwise closes the settings page and every card
through close_cards. Before, it copied half of go_home and hid the four
YAML overlays itself, so a runtime detail card stayed open under a dimmed
screen. close_cards is now the one runtime_tiles::dismiss() call: the
fallback and the widget.hide actions after its return ran for nothing.

The backlight light becomes internal. Home Assistant could change it, but
the minute tick put the level back, and switching it off darkened the
screen without standby. The brightness numbers and Wake/Sleep replace it.
A dead clock-label branch from the manual profile leaves
apply_screen_settings.

Checked with 209 Python and 14 C++ tests, host builds of both boards over
the native API, and ESP32 builds of both Easy profiles. Firmware 0.2.46.

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

screen_manager/app/core.py

@@ -17,7 +17,7 @@ WEEKDAYS = ['Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa', 'Su']
 REPO = 'https://github.com/MaxGramser/homeassistant_espscreen'
 REFS = {'cyd': 'main', 'guition': 'main'}
 # Firmware shipped with this app release; screens below it get an update offer.
-FIRMWARE_VERSION = '0.2.45'
+FIRMWARE_VERSION = '0.2.46'
 # The Auto standby switch a screen offers Home Assistant automations.
 AUTO_STANDBY_MIN_FIRMWARE = '0.2.41'
 # The settings page the screen opens itself, and the screen.settings tile that opens it.