Add Copilot instructions for GitHub REST API scripts

Introduces a documentation file outlining conventions, architecture, and usage patterns for standalone Python scripts automating GitHub REST API tasks. Includes guidance on script structure, error handling, naming, token scopes, and dependencies.

.github/copilot-instructions.md

@@ -0,0 +1,71 @@
+# GitHub REST API Use - Copilot Instructions
+
+## Project Overview
+
+A collection of standalone Python scripts for GitHub REST API automation tasks. Each script in `uses/` is self-contained and designed to be copied, configured, and run independently.
+
+## Script Architecture Pattern
+
+All scripts follow the same structure:
+
+```python
+"""
+Docstring with description, usage steps, and requirements
+"""
+
+import requests  # Only external dependency
+
+# Configuration block - user replaces these values
+TOKEN = "YOUR_PAT"
+OWNER = "your-username"
+REPO = "your-repo"
+# Script-specific settings...
+
+# Standard headers setup
+headers = {"Authorization": f"Bearer {TOKEN}", "Accept": "application/vnd.github+json"}
+
+# API calls with error handling
+# Print results to console
+```
+
+## Conventions
+
+### Script Structure
+
+- **Module docstring**: Must include description, numbered usage steps, and requirements
+- **Configuration block**: Place all user-configurable constants immediately after imports with placeholder values and inline comments explaining each
+- **Error handling**: Check `response.status_code` and print `response.json().get("message", "No error message provided")` on failure
+- **Console output**: Use `print()` statements to report progress and results
+
+### API Patterns
+
+- Use `Bearer` token auth: `{"Authorization": f"Bearer {TOKEN}"}`
+- Always include `Accept: application/vnd.github+json` header
+- Handle pagination via `response.links["next"]` when iterating large datasets (see `delete_a_workflow.py`)
+- Date parsing format: `%Y-%m-%dT%H:%M:%SZ` for GitHub timestamps
+
+### Naming
+
+- Script files: `snake_case.py` describing the action (e.g., `close_old_issues.py`)
+- Variables: Use descriptive names matching GitHub API terminology (`OWNER`, `REPO`, `TOKEN`)
+
+## Token Scopes Reference
+
+| Operation Type      | Required Scopes     |
+| ------------------- | ------------------- |
+| Repository content  | `repo`              |
+| Workflow operations | `repo` + `workflow` |
+| Admin/collaborator  | `repo` + `admin`    |
+
+## Creating New Scripts
+
+1. Copy an existing script as a template
+2. Update the docstring with clear usage instructions
+3. Define configuration constants with placeholder values
+4. Implement API logic with proper error handling and console output
+5. Handle pagination if the endpoint returns lists
+
+## Dependencies
+
+- Python 3.6+
+- `requests` library only - no other external dependencies