Add config files and update docs for tooling support

Added .nvmrc to specify Node.js 22, .stylelintrc.json for Stylelint SCSS rules, and stackblitz.json for StackBlitz integration. Introduced CONTRIBUTING.md with guidelines. Updated README.md with StackBlitz badge and package.json to enforce Node.js >=22.0.0 in engines.

Author: vanvianen

.nvmrc

@@ -0,0 +1 @@
+22

.stylelintrc.json

@@ -0,0 +1,15 @@
+{
+    "extends": ["stylelint-config-standard-scss"],
+    "rules": {
+        "scss/at-rule-no-unknown": [
+            true,
+            {
+                "ignoreAtRules": ["use", "forward", "import", "mixin", "include", "function", "return", "if", "else", "each", "for", "while", "extend"]
+            }
+        ],
+        "selector-class-pattern": null,
+        "no-descending-specificity": null,
+        "property-no-vendor-prefix": null,
+        "value-no-vendor-prefix": null
+    }
+}

CONTRIBUTING.md

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+# Contributing to Stylescape Examples
+
+Thank you for your interest in contributing to Stylescape!
+
+## Getting Started
+
+1. Fork this repository
+2. Clone your fork locally
+3. Install dependencies: `npm install`
+4. Start development: `npm run dev`
+
+## Guidelines
+
+- Follow the existing code style
+- Test your changes locally before submitting
+- Keep commits focused and descriptive
+- Update documentation if needed
+
+## Reporting Issues
+
+- Check existing issues first
+- Provide clear reproduction steps
+- Include environment details (Node version, OS, browser)
+
+## Pull Requests
+
+1. Create a feature branch from `main` or `dev`
+2. Make your changes
+3. Test thoroughly
+4. Submit a PR with a clear description
+
+## Code of Conduct
+
+Please be respectful and inclusive. See our [Code of Conduct](.github/CODE_OF_CONDUCT.md).
+
+## Questions?
+
+- Open an issue for questions
+- Visit [Stylescape Documentation](https://github.com/stylescape/stylescape)
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the MIT License.

README.md

@@ -1,5 +1,7 @@
 # Stylescape Parcel Example
 
+[![Open in StackBlitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/github/stylescape/example-parcel)
+
 This example demonstrates how to integrate [Stylescape](https://github.com/stylescape/stylescape) with [Parcel](https://parceljs.org/), a zero-configuration web application bundler.
 
 ## About Stylescape

package.json

@@ -5,6 +5,9 @@
     "private": true,
     "repository": "https://github.com/stylescape/example-parcel",
     "license": "MIT",
+    "engines": {
+        "node": ">=22.0.0"
+    },
     "stackblitz": {
         "startCommand": "npm start"
     },

stackblitz.json

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+{
+    "installDependencies": true,
+    "startCommand": "npm run dev"
+}