This PR adds comprehensive GitHub Copilot instructions to help coding agents work effectively with the homebridge-plugin-update-check codebase. The instructions provide detailed guidance on building, testing, and developing this TypeScript-based Homebridge plugin.

What's included

The .github/copilot-instructions.md file contains:

• Complete setup workflow: Step-by-step commands for bootstrapping the repository in a fresh environment
• Build process documentation: Detailed breakdown of the TypeScript compilation and UI file copying process
• Testing and validation: Instructions for running the test suite, linting, and documentation generation
• Timing information: Precise timing for all commands (build ~4s, test <1s, lint ~2s) with "NEVER CANCEL" guidance
• Project architecture: Explanation of the Homebridge plugin structure and its limitations for standalone testing
• Manual validation steps: Comprehensive checklist for validating changes without a full Homebridge environment
• CI pipeline compatibility: Commands that mirror the GitHub Actions workflow for local validation

Key features

• All commands validated: Every command in the instructions has been tested and confirmed working
• Timing accuracy: Build and test times measured in the actual environment with appropriate buffers
• Architecture awareness: Clear explanation that this is a Homebridge plugin that cannot be run standalone
• Development workflow: Covers the complete development cycle from initial setup through release preparation

The instructions follow the imperative tone requirement and provide exhaustive validation steps to ensure GitHub Copilot agents can work effectively with minimal trial and error.

Fixes #87.

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.