Consolidated bugfixes for version 2.0

[Lwmte]

No description provided.

[Copilot]

Pull request overview

This PR bundles several small fixes/improvements across Tomb Editor, WadTool, and the TEN node catalog, primarily targeting UI stability and metadata correctness.

Changes:

• Improve WadTool skeleton editor display by including mesh names in the bone tree.
• Harden UI components and event teardown paths (null-safe texture path check, safer node dispose).
• Fix/adjust editor behaviors and node-catalog metadata (Content Browser add action routing, Level Settings checkbox behavior, inventory node argument filtering metadata, changelog updates).

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
WadTool/Forms/FormSkeletonEditor.cs	Adds helper for displaying bone + mesh names in the skeleton tree and uses it in node labels / rename path.
WadTool/Controls/PanelTextureMap.cs	Prevents a null dereference when checking for missing external textures.
TombLib/TombLib/Catalogs/TEN Node Catalogs/Inventory.lua	Updates inventory node argument enumeration filters so additional items appear in pickers.
TombLib/TombLib.Forms/Controls/VisualScripting/VisibleNodeBase.cs	Moves UI disposal into the managed-dispose branch to avoid unsafe cleanup patterns.
TombEditor/ToolWindows/ContentBrowser.cs	Routes “add imported geometry” through the command system instead of directly setting an editor action.
TombEditor/Forms/FormLevelSettings.cs	Stops forcibly overriding the “Map animated textures” checkbox state during dialog updates.
Installer/Changes.txt	Updates release notes to reflect the bundled fixes and additions.

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