Refresh README project structure diagram to match current repository layout

[Copilot]

The README’s Project Structure section had drifted from the actual repository and no longer reflected key directories/files. This updates the diagram to represent the current layout so contributors can navigate the codebase accurately.

• Project structure coverage

  • Added the .github/ subtree (workflows, linters, and repo governance files) to the diagram.
  • Added missing root-level configuration and metadata files (.editorconfig, .gitattributes, .gitignore, .npmrc, pre-commit configs, LICENSE, package-lock.json).

• Generated/build artifacts now represented

  • Included src/assets/css/tailwind.css and src/assets/js/phaser.bundle.js in the documented tree.

• Diagram consistency cleanup

  • Updated labels/descriptions for clarity and aligned entries with current file organization under src/.

├── .github/
│   ├── linters/
│   ├── workflows/
│   ├── CODEOWNERS
│   ├── dependabot.yml
│   └── FUNDING.yml
...
│   │   ├── css/
│   │   │   ├── tailwind-input.css
│   │   │   └── tailwind.css
│   │   └── js/
│   │       ├── phaser-init.js
│   │       └── phaser.bundle.js

[BaseMax]

Good