Migrate linting to ESLint 10.4.0

[Copilot]

This updates the repository to ESLint 10.4.0 and aligns the dependency graph with the current flat-config setup. The only functional follow-up needed was declaring globals explicitly because the ESLint config imports it directly.

• Dependency update

  • bump eslint to 10.4.0
  • refresh package-lock.json to capture the new resolver output and dependency tree

• Flat config dependency hygiene

  • add globals as an explicit dev dependency
  • preserve the existing eslint.config.js behavior without changing lint rules or config structure

• Resulting package changes

  {
    "devDependencies": {
      "eslint": "^10.4.0",
      "globals": "^14.0.0"
    }
  }

Original prompt

Migrate to eslint 10.4.0. Create a PR.

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