Dashboard Studio 2.3.0: light, light group and room cards redesigned

- Light card: the card is the lamp; brightness fills it in the lamp's colour,
  drag anywhere to dim, large brightness figure, switch and colour row
- Light groups: the group fader on top, a fader row per lamp in its colour
- Room card: name with what's going on, all-lights switch, large climate
  figures, open doors in amber, device tiles that glow by brightness
- Room: new "Hide these entities" field

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dashboard_studio/DOCS.md

@@ -83,7 +83,7 @@ More editing tools:
 - **Light and dark versions:** turn on **Switch to a dark or light version with the device** under a theme to use a matching dark version of a light theme when the device is in dark mode, and the other way round. *System* always does this.
 - **Theme:** *System* follows your device's light or dark appearance. The other 23 themes are fixed: Light, Dark, Nord, Dusk, Forest, Graphite, Indigo, Rose, Ocean, Sunrise, Lavender, Mint, Sand, Midnight (true black, for OLED screens), Espresso, Ember, Lagoon, Paper, Arctic, Moss, Sakura, Concrete, and High contrast for maximum readability. Text meets accessibility contrast levels in every theme. Changing any color switches the theme to *Custom*.
 - **Tile style:** *Cards* puts every widget on a tile. *Outlined* draws a thin border instead. *Plain* removes the cards completely, so widgets sit straight on the background. You can also turn off the background for a single widget under **Style → No background**.
-- **Lights that are on** glow: the tile turns warm, or takes on the bulb's color for color lights. In Plain style, the light's icon and brightness bar glow instead.
+- **Lights that are on** glow: the light card turns warm, or takes on the bulb's color for color lights, and its brightness fills it from the left in a deeper shade. Drag anywhere across a light card to dim it; the switch at the top right turns it on or off, and tapping the bulb opens its colors and settings. A light that can only switch on and off turns on or off when you tap the card.
 - **Icons:** widgets pick an icon automatically. To change one, click the icon next to the field to open the icon picker (over 130 icons for rooms, appliances, tools and devices, searchable in English and Dutch), type an icon name, or paste an emoji.
 
 ## Widgets
@@ -130,7 +130,7 @@ Cards inside a container work like anywhere else, and appliance cards inside the
 
 ### Light groups
 
-When the light card points at a light group, it becomes a control panel for the whole group: a switch and brightness slider for all lights at once, a row of white tones and colors (shown when the lights support them), and every light in the group with its own switch and brightness slider. Tap a light's colored dot to open its own panel with brightness, color temperature, colors and a free color picker. When you pick a group, the card grows to four rows so the list fits. Turn off **For a light group, show each light** to hide the list.
+When the light card points at a light group, the group's own fader sits on top (drag it to dim all the lights at once, the switch turns them all on or off), and under it every light in the group is a fader of its own, filled in that lamp's color by its brightness, with its own switch. Drag a row to dim just that lamp. Tap the bulb at the top for the group's colors and settings. When you pick a group, the card grows to four rows so the list fits. Turn off **For a light group, show each light** to hide the list.
 
 Tapping a light anywhere else on the dashboard (for example in a room card) opens the same light panel.
 
@@ -210,11 +210,12 @@ The card shows the sun, the house, the battery and the grid with their power rig
 
 Pick one of your Home Assistant rooms (areas) and the card gathers everything in it:
 
-- the room's temperature and humidity (the sensors set on the area in Home Assistant, or any temperature and humidity sensor in the room; you can also choose them yourself)
-- chips for what's going on: how many lights are on (tap to switch them all off, or all on), the thermostat (tap it for the climate popup with a dial, −/+, modes, presets and fan modes), open doors and windows, motion, and music that's playing
-- buttons for the lamps, switches, fans, covers and locks in the room
+- under the room's name, what is going on in one line: how many lights are on, motion, and music that's playing; the switch beside it turns all the room's lights off (or on)
+- the room's temperature in large figures and its humidity (the sensors set on the area in Home Assistant, or any temperature and humidity sensor in the room; you can also choose them yourself), and the thermostat (tap it for the climate popup with a dial, −/+, modes, presets and fan modes)
+- open doors and windows, in amber
+- tiles for the lamps, switches, fans, covers and locks in the room; tap one to switch it. A lamp that's on glows in its own color, filled by its brightness
 
-Light groups are left out so each lamp counts once. Add extra entities, or skip the room and list the entities yourself. The card glows warm while lights are on, and can have a background photo. Rooms are read from Home Assistant's area, device and entity registries.
+Light groups are left out so each lamp counts once. Add extra entities, or skip the room and list the entities yourself. **Hide these entities** leaves out anything in the room you don't want on the card (a light in a cupboard, a speaker, a test switch): it isn't counted, shown or switched by the card. The card can have a background photo. Rooms are read from Home Assistant's area, device and entity registries.
 
 ### Media players