This release adds comprehensive JSON linting support to @poupe/eslint-config.

- Added eslint-plugin-jsonc for JSON/JSONC file linting
- Configured formatting rules: 2-space indentation, no trailing commas, no comments
- Added package.json-specific sorting for standard key ordering and alphabetical dependencies
- Integrated JSON config into both standard and Nuxt configurations

- Added @humanwhocodes/momoa for TypeScript type support
- Added eslint-plugin-jsonc and jsonc-eslint-parser

- Added example JSON files to all test workspaces
- Enabled previously disabled sort-keys test
- Updated test infrastructure to verify JSON linting

- Updated README.md with JSON plugin reference
- Enhanced AGENT.md with JSON configuration details
- Added changelog entry for v0.7.2