Grey out what Home Assistant calls off and colour the rest like Home Assistant, so an airco that is off no longer looks on (0.2.85)

The airco tile stayed orange while the airco was off. The firmware kept its own
short list of what turns grey and gave an off climate Home Assistant's orange,
but Home Assistant has no colour for a climate that is off: its cards fall back
to the inactive grey. Other tiles had the same fault: an off fan, a closed
blind, a docked robot, a player in standby, an idle script, a paused timer and
a camera that isn't streaming all kept their colour.

Tile::active() is now a port of the frontend's stateActive() for the domains a
tile can show, and every tile that is not active is grey. An airco that is off
reads Off, with the room's temperature when the device reports one, as Home
Assistant's tile does. tile_controls::accent() follows stateColorCss(): alarm
binary sensors red, a battery green, orange or red by its charge, a running
script or timer and a streaming camera amber, the weather per condition, the
sun amber and indigo, someone in a zone blue. Scenes, selects, numbers and
sensors keep their own colour per kind. A full-page tile lights up only for
tiles that can be off (Tile::lights_up), and a closed blind's slider keeps its
colour. The top bar's alarm classes are Home Assistant's eleven.

Checked with tools/check.sh (471 Python tests, 19/19 C++ with 58 state cases
and every colour rule) and compiled for both boards: CYD 1,677,488 B (91.4 %,
+576 B), Guition 2,054,640 B (25.3 %).

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

components/smart_display/theme.h

@@ -201,19 +201,22 @@ inline uint32_t outline(uint32_t own) {
 // What a state looks like in Home Assistant's frontend (its --state-*-color and --*-color variables), the same in both
 // looks: an amber light is amber at night too. They are data, drawn through state(), foreground(), tint() and icon().
 namespace ha {
-constexpr uint32_t AMBER = 0xFFC107;         // a light, switch or binary sensor that is on; lux
-constexpr uint32_t ORANGE = 0xFF9800;        // the sun above the horizon, a paused timer or robot, drying
+constexpr uint32_t AMBER = 0xFFC107;         // on: a light, switch, running script or timer, streaming camera; the sun; lux
+constexpr uint32_t ORANGE = 0xFF9800;        // a paused robot, drying, a battery half full, the sun path by day
 constexpr uint32_t DEEP_ORANGE = 0xFF6F22;   // temperature, heating
-constexpr uint32_t RED = 0xF44336;           // a robot in trouble
-constexpr uint32_t PURPLE = 0x926BC7;        // covers, scenes and scripts, energy
-constexpr uint32_t DEEP_PURPLE = 0x6E41AB;   // a clear night, the sun below the horizon
-constexpr uint32_t INDIGO = 0x3F51B5;        // selects
-constexpr uint32_t BLUE = 0x2196F3;          // cooling, a robot on its way back, the settings card, everything else
-constexpr uint32_t LIGHT_BLUE = 0x03A9F4;    // media players, the weather
-constexpr uint32_t CYAN = 0x00BCD4;          // fans
-constexpr uint32_t TEAL = 0x009688;          // numbers, percentages, a running timer, a robot at work
-constexpr uint32_t GREEN = 0x4CAF50;         // someone at home, auto mode
-constexpr uint32_t GREY = 0x9E9E9E;          // anything off or away
+constexpr uint32_t RED = 0xF44336;           // an alarm going off, a robot in trouble, an empty battery
+constexpr uint32_t PURPLE = 0x926BC7;        // covers, scenes, energy
+constexpr uint32_t DEEP_PURPLE = 0x6E41AB;   // a clear night
+constexpr uint32_t INDIGO = 0x3F51B5;        // selects, the sun below the horizon, pouring rain
+constexpr uint32_t BLUE = 0x2196F3;          // cooling, rain, a robot on its way back, someone in a zone, everything else
+constexpr uint32_t LIGHT_BLUE = 0x03A9F4;    // media players, sleet
+constexpr uint32_t CYAN = 0x00BCD4;          // fans, hail
+constexpr uint32_t TEAL = 0x009688;          // numbers, percentages, a robot at work
+constexpr uint32_t GREEN = 0x4CAF50;         // someone at home, auto mode, wind, a full battery
+constexpr uint32_t GREY = 0x9E9E9E;          // anything off or away, fog
+// The rest of the weather, as Home Assistant colours a condition (--state-weather-*-color): clouds, a partly
+// cloudy sky, lightning, lightning with rain, and snow, which Home Assistant writes as a value of its own.
+constexpr uint32_t LIGHT_GREY = 0xBDBDBD, BLUE_GREY = 0x607D8B, YELLOW = 0xFFEB3B, LIME = 0xCDDC39, ICE = 0xC0E0FF;
 constexpr uint32_t SKY = 0x00A6ED;           // a robot that is docked or idle
 constexpr uint32_t SWITCH_ON = 0xFFB900;     // the switch on a history card while on
 constexpr uint32_t PURPLE_PRESSED = 0x7552A8;  // a chosen cover key under a finger