Give a lamp's modes a page: the effects, palettes, presets, speed and intensity of a WLED behind its colour card, with a drum picker and the effect's name on the tile (0.2.83)

A light that offers effects gets a sparkles key at the top right of its colour
card. It opens a page with a row per thing the lamp offers, all from Home
Assistant: the light's effect and the select entities of its device (a WLED's
colour palette, preset and playlist) with what they are set to, and a slider per
number entity of the device (speed, intensity). Names are Home Assistant's own
English entity translations, icons its frontend's; nothing about a brand is
hardcoded beyond a preferred order of translation keys.

A row opens LVGL's roller with every name Home Assistant lists at that moment,
asked for when the picker opens (esphome.screen_options, answered with
op: options, one page of names per message), the effects alphabetically with
Solid on top. The check key at the top right sends the choice as one action;
the back key sends nothing. A slider sends number.set_value when let go. While
an effect runs, the tile names it instead of the brightness.

Firmware 0.2.70: effects_page.h (built when it opens, gone when it closes),
Extra.effect/option_rows/number_rows, options_request, a hidden roller widget
so ESPHome compiles LVGL's roller, five firmware-only glyphs. App 0.2.83:
light_effects.py, the effect attribute, the device rows in the state message,
card_options_loop. Checked on the host with a virtual finger (35/35 on both
boards) and compiled for both ESP32 boards; CYD 1,675,424 B (91.3 %).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

README_EXTENDED.md

@@ -32,6 +32,14 @@ on the screen itself, and how updates work.
   dial; double-width shows the digital time with the date beside it.
 - **Light control:** brightness, rainbow color, and white temperature according to
   the light's capabilities. Open the detailed control with a long touch.
+- **Effects (firmware 0.2.70+):** a light that offers effects (a WLED, a Hue with
+  its candle effect) gets a sparkles key at the top right of its colour card. It
+  opens a page with a row per thing the lamp offers, named and ordered as Home
+  Assistant lists them: the light's effect and the select entities of its device
+  (a WLED's colour palette, preset and playlist), plus a slider per number entity
+  (speed, intensity). A row opens a drum picker with every name Home Assistant has
+  at that moment; the check at the top right sends the choice. While an effect
+  runs, the tile names it instead of the brightness.
 - **More cards:** climate, vacuum, fan, cover, media player, sensors,
   select/input_select, number/input_number, switches, scenes, scripts, and
   buttons.