Added environment panel for depth, pressure and outside temperature.

docs/display_layouts.md

@@ -41,7 +41,7 @@ The elements array is the complete active layout; omitted default panels stay de
 
 `layout_overview.tscn` owns the shader grid and toolbar. Each `layout_canvas.tscn` places its panel children using `layout_item.gd`; set their IDs, cell rectangles, and minimum sizes in the Inspector. Existing UI scenes remain under each item's `Content` node. Each allocation has a full-size panel background with a shared `panel_gap` (16 logical pixels by default). Instruments scale uniformly inside that frame; reserved slots fill it. Embedded component backgrounds are transparent so their scaling does not change the visible gutters. The camera retains its 16:9 picture inside the camera/header allocation.
 
-The initial layouts deliberately leave free cells for rearranging. Environment, VR/video, and operator tools are placeholders. The Link panel has a separate [telemetry demo](link_panel.md). Camera and telemetry feeds are not connected.
+The initial layouts deliberately leave free cells for rearranging. VR/video and operator tools are placeholders. The Link and Environment panels have separate [Link](link_panel.md) and [Environment](environment_panel.md) telemetry demos. Camera and telemetry feeds are not connected.
 
 The library registry is `scripts/layout_catalog.gd`. Each entry supplies a scene, display text, preferred/minimum cells and sizing behavior. JSON stores registered type IDs rather than resource paths. `components/layout_library.tscn` owns the drawer; selection button order is unchanged.