Run godot --convert-3to4 (automated conversion)

Apply Godot 4.6 automated conversion: renames Spatial.translate->position,
margin_*->offset_*, tool->@tool, .empty()->.is_empty(), DynamicFont->FontFile,
onready->@onready, export()->@export, and many more.

127 files changed by the tool. Manual fixes still required for:
 - godot_db_manager plugin (incompatible APIs: WindowDialog, Tabs, etc.)
 - lod plugin (Spatial -> Node3D renames)
 - ResourceLoader.load_interactive removed -> load_threaded_request
 - OS.set_window_fullscreen removed -> DisplayServer
 - Viewport.set_size_override removed

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

addons/godot_db_manager/dlgs/load_res_path_dlg.tscn

@@ -1,16 +1,16 @@
-[gd_scene load_steps=2 format=2]
-
-[ext_resource path="res://addons/godot_db_manager/dlgs/load_res_path_dlg.gd" type="Script" id=1]
-
-[node name="load_res_path_dlg" type="FileDialog"]
-anchor_right = 0.404
-anchor_bottom = 0.431
-margin_right = -0.400024
-margin_bottom = 0.0999756
-window_title = "Open a File"
-resizable = true
-mode = 0
-script = ExtResource( 1 )
-__meta__ = {
-"_edit_use_anchors_": false
-}
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://addons/godot_db_manager/dlgs/load_res_path_dlg.gd" type="Script" id=1]
+
+[node name="load_res_path_dlg" type="FileDialog"]
+anchor_right = 0.404
+anchor_bottom = 0.431
+offset_right = -0.400024
+offset_bottom = 0.0999756
+window_title = "Open a File"
+resizable = true
+mode = 0
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}