fix: make devices inert in the Background editor

Issue: #362
User-Visible: yes

docs/CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## Unreleased
 
+- Device markers in the Background editor are now passive, translucent
+  landmarks: their core, ring, value capsule and badges no longer hover, open,
+  actuate or drag, and a drawing or furniture tool receives a press through
+  the whole visible marker instead of losing that point
+  ([#362](https://github.com/Matysh/houseplan-card/issues/362)).
+
 ## v1.69.0-beta.3 — 2026-08-29
 
 - Furniture placement in the Background editor now shows a translucent mouse

docs/CHANGELOG.ru.md

@@ -8,6 +8,12 @@
 
 ## Не выпущено
 
+- Маркеры устройств в редакторе подложки теперь служат только полупрозрачными
+  ориентирами: ядро, кольцо, капсула значения и бейджи больше не реагируют на
+  наведение, не открываются, не выполняют действия и не перетаскиваются, а
+  инструмент рисования или мебели получает нажатие сквозь всю видимую область
+  маркера ([#362](https://github.com/Matysh/houseplan-card/issues/362)).
+
 ## v1.69.0-beta.3 — 2026-08-29
 
 - При размещении мебели в редакторе подложки мышь теперь показывает на плане

docs/DECOR-EDITOR.md

@@ -20,7 +20,7 @@ device state or Home Assistant actions.
 | Scale | Corner drag preserves aspect ratio. Hold `Shift` for independent axes. |
 | Rotation | 5° steps by default; `Shift` gives free rotation. Lines use endpoint handles instead of a rotation handle. |
 | Magnet targets | Only other decor objects and room contours: corners, edge centres, centres and edges. The image, devices and openings are excluded. |
-| Context emphasis | Decor and its editing chrome stay fully opaque. Rooms, labels, devices, openings, positive-thickness walls and solid/dashed zero-thickness walls are contextual only and render at 35% opacity. |
+| Context emphasis | Decor and its editing chrome stay fully opaque. Rooms, labels, devices, openings, positive-thickness walls and solid/dashed zero-thickness walls are contextual only and render at 35% opacity. The whole device presentation (core, ring, capsule, values and badges) is pointer-inert: it never hovers, opens, acts or drags, and the active Background tool receives a press through it. |
 | View composition | All decor kinds form one layer above room/data fills, room hover fill, opening-tunnel fills and Glow base. Live Glow, sun, physical walls, opening symbols, devices and room labels remain above decor. The plan image remains below it. |
 | Compatibility | Legacy `width`, text `size/scale` and `plan_scale` remain readable. New writes use `width_cm`, `size_cm` and `plan_scale_x/y`. |