Enhance editor panels with asset management and navigation features

[amasiye]

This pull request introduces several enhancements and new features to the editor's input handling and scene management. The most significant changes are the addition of mouse event support, expansion of keyboard input capabilities, and the introduction of data transfer objects (DTOs) for scene and hierarchy data. Additionally, a new SceneLoader class is provided for robust scene discovery and loading.

Input Handling Improvements:

• Added support for mouse events in the editor by integrating MouseEvent, including parsing, state management, and utility methods like getMouseEvent, isLeftMouseButtonDown, and getCurrentInput in Input and InputManager. [1] [2] [3] [4] [5] [6] [7]
• Expanded keyboard input support by adding new key codes for shift-modified keys and play toggle, as well as updating input normalization and key mapping logic. [1] [2] [3]

Scene and Hierarchy Data Management:

• Introduced SceneDTO and HierarchyObjectDTO classes to encapsulate scene and hierarchy data, including serialization and deserialization methods. [1] [2]
• Added a new SceneLoader class for resolving asset and scene directories, loading scene data, and extracting hierarchy information from source files.

Event System Extension:

• Added a new event type HIERARCHY_CHANGED to the editor's event enumeration for tracking hierarchy updates.

These changes collectively improve the editor's input responsiveness, scene management, and data structure clarity.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Resolve texture files from the project directory

The texture preview lookup is rooted at getcwd() instead of the editor's configured project directory, so opening a project via edit --directory <path> from another shell location makes valid relative texture paths resolve against the wrong tree and renders previews as missing/empty. This breaks inspector behavior for a supported launch mode and should use the same project root the editor was initialized with.

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[chatgpt-codex-connector]

Return a DTO instance from fromArray

HierarchyObjectDTO::fromArray is declared to return self but has an empty body, so any call will return null and trigger a runtime TypeError. This makes array-to-DTO deserialization unusable and will fail immediately once the method is invoked.

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