A media card like a phone's now playing, with the album cover on a Guition (0.2.77)

The card behind a media tile shows the album cover, the title, the artist and
the album, a progress bar that runs while the track plays with the times at its
ends, round keys for previous, play or pause and next, and a volume row with a
mute key, a wide slider and the percentage. Keys the player lacks stay faded,
an off player shows one power key, a stream without a length shows no bar, and
the CYD shows the player's icon in the cover's place. A media tile over the
whole page is the same card under the tile's head. media_card.h holds the
geometry, tests/test_media_card.cpp checks every shape.

The cover comes the way camera images do: the screen asks with the size and
the colour behind the corners, the app fetches the picture from Home Assistant,
cuts it square, rounds the corners over that colour and serves it on port 8098;
the Guition loads it once and asks again only when the picture's mark in the
state changes. Firmware 0.2.64.

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

screen_manager/CHANGELOG.md

@@ -1,3 +1,14 @@
+## 0.2.77 (firmware 0.2.64)
+
+A media card like a phone's "now playing", with the album cover on a Guition.
+
+- **The media card is new.** Tap a media player's tile and the card shows the album cover, the title, the artist and the album, a progress bar that runs while the track plays with the elapsed and total time at its ends, three round keys (previous, play or pause on the blue key, next) and a volume row: a mute key, a wide slider with a round knob, and the percentage. The keys the player does not offer are faded, the mute key and the slider follow what Home Assistant reports (a muted player shows a grey fill and *Muted*), and a player that is off shows one power key. A stream without a length shows no bar and no times. It works in the light and the dark look.
+- **The album cover** comes the way camera images do (app 0.2.66): the screen asks ESP Screen Manager, the app fetches the picture from Home Assistant with its own access, makes it exactly the size the card asks for with the corners already rounded over the card's colour, and serves it on port 8098. A Guition loads it once and keeps it until the picture changes, the card closes or the page turns. The CYD has no memory for pictures and shows the player's icon in the cover's place, as it does when a player has no picture (a radio station, a player that is off).
+- **A media tile over the whole page** (size *Full page*) is the same card under the tile's head: the cover at the left, the track, the bar and the keys beside it, the volume row along the bottom. The keys and the slider work on the tile; holding the tile still opens the card.
+- **The card's clock runs on the screen.** Home Assistant reports where a track was and when; the bar and the elapsed time run on from there every second without any traffic, and stand still while the track is paused.
+- Claude in Home Assistant and the editor need nothing new: a `media_player` tile is the same tile, with the new card behind it.
+- Needs firmware 0.2.64 for the new card; the app serves covers only to a Guition on that firmware. Older firmware keeps the old card. Includes everything from 0.2.76.
+
 ## 0.2.76 (firmware 0.2.63)
 
 The CYD in the editor shows the whole tile again.