Added a dynamic layout system where UI elements can be moved about on a tiled grid.

scenes/layout_dual_portrait.tscn

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+[gd_scene format=3]
+
+[ext_resource type="PackedScene" path="res://scenes/display_left.tscn" id="left"]
+[ext_resource type="PackedScene" path="res://scenes/display_right.tscn" id="right"]
+[ext_resource type="Script" path="res://scripts/layout_preview.gd" id="preview"]
+[ext_resource type="PackedScene" path="res://components/layout_overview.tscn" id="overview"]
+
+[node name="DualPortraitLayout" type="Control"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("preview")
+configuration = 1
+
+[node name="Overview" parent="." instance=ExtResource("overview")]
+layout_mode = 1
+grid_size = Vector2i(18, 32)
+
+[node name="Canvas" parent="Overview/Dashboard" instance=ExtResource("left")]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="RightWindow" type="Window" parent="."]
+title = "ROV / right portrait"
+visible = false
+size = Vector2i(540, 960)
+content_scale_size = Vector2i(1080, 1920)
+content_scale_mode = 1
+content_scale_aspect = 1
+
+[node name="RightOverview" parent="RightWindow" instance=ExtResource("overview")]
+layout_mode = 1
+hot_corner_enabled = false
+grid_size = Vector2i(18, 32)
+
+[node name="Canvas" parent="RightWindow/RightOverview/Dashboard" instance=ExtResource("right")]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2

scenes/layout_landscape.tscn

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+[gd_scene format=3]
+
+[ext_resource type="PackedScene" path="res://components/layout_canvas.tscn" id="canvas"]
+[ext_resource type="PackedScene" path="res://components/layout_item.tscn" id="item"]
+[ext_resource type="PackedScene" path="res://components/camera_layout_slot.tscn" id="camera"]
+[ext_resource type="PackedScene" path="res://components/vehicle_status_panel.tscn" id="vehicle"]
+[ext_resource type="PackedScene" path="res://components/motion_panel.tscn" id="motion"]
+[ext_resource type="PackedScene" path="res://components/layout_slot.tscn" id="slot"]
+[ext_resource type="Script" path="res://scripts/layout_preview.gd" id="preview"]
+[ext_resource type="PackedScene" path="res://components/layout_overview.tscn" id="overview"]
+
+[ext_resource type="PackedScene" path="res://components/link_panel.tscn" id="link"]
+
+[node name="LandscapeLayout" type="Control"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("preview")
+
+[node name="Overview" parent="." instance=ExtResource("overview")]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="Canvas" parent="Overview/Dashboard" instance=ExtResource("canvas")]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+config_path = "user://layouts/landscape.json"
+legacy_config_path = "user://layout_landscape.cfg"
+
+[node name="Camera" parent="Overview/Dashboard/Canvas" instance=ExtResource("item")]
+layout_mode = 0
+panel_id = "camera"
+cell_rect = Rect2i(0, 0, 16, 10)
+minimum_cells = Vector2i(8, 5)
+reference_size = Vector2(960, 600)
+
+[node name="Content" parent="Overview/Dashboard/Canvas/Camera" instance=ExtResource("camera")]
+layout_mode = 0
+
+[node name="Vehicle" parent="Overview/Dashboard/Canvas" instance=ExtResource("item")]
+layout_mode = 0
+panel_id = "vehicle"
+cell_rect = Rect2i(16, 0, 10, 8)
+minimum_cells = Vector2i(6, 4)
+reference_size = Vector2(600, 440)
+
+[node name="Content" parent="Overview/Dashboard/Canvas/Vehicle" instance=ExtResource("vehicle")]
+layout_mode = 0
+
+[node name="Motion" parent="Overview/Dashboard/Canvas" instance=ExtResource("item")]
+layout_mode = 0
+panel_id = "motion"
+cell_rect = Rect2i(16, 8, 10, 7)
+minimum_cells = Vector2i(6, 4)
+reference_size = Vector2(600, 410)
+
+background_path = NodePath("Content/Background")
+
+[node name="Content" parent="Overview/Dashboard/Canvas/Motion" instance=ExtResource("motion")]
+layout_mode = 0
+
+[node name="Environment" parent="Overview/Dashboard/Canvas" instance=ExtResource("item")]
+layout_mode = 0
+panel_id = "environment"
+cell_rect = Rect2i(26, 0, 6, 8)
+minimum_cells = Vector2i(4, 3)
+reference_size = Vector2(360, 240)
+fill_allocation = true
+
+[node name="Content" parent="Overview/Dashboard/Canvas/Environment" instance=ExtResource("slot")]
+layout_mode = 0
+title = "ENVIRONMENT"
+description = "Depth · pressure · water temperature"
+
+[node name="VideoVR" parent="Overview/Dashboard/Canvas" instance=ExtResource("item")]
+layout_mode = 0
+panel_id = "videovr"
+cell_rect = Rect2i(0, 10, 16, 8)
+minimum_cells = Vector2i(6, 4)
+reference_size = Vector2(600, 400)
+fill_allocation = true
+
+[node name="Content" parent="Overview/Dashboard/Canvas/VideoVR" instance=ExtResource("slot")]
+layout_mode = 0
+title = "VIDEO / VR"
+description = "Latency breakdown · headset · resolution"
+
+[node name="Link" parent="Overview/Dashboard/Canvas" instance=ExtResource("item")]
+layout_mode = 0
+panel_id = "link"
+cell_rect = Rect2i(26, 8, 6, 4)
+minimum_cells = Vector2i(4, 3)
+reference_size = Vector2(360, 240)
+
+[node name="Content" parent="Overview/Dashboard/Canvas/Link" instance=ExtResource("link")]
+layout_mode = 0