Add custom instructions for GitHub Copilot to enhance development guidelines

.github/copilot-instructions.md

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+# Custom Instructions for GitHub Copilot
+
+## Project Overview
+This is a Python project named ANewDawn. It utilizes Docker for containerization (`Dockerfile`, `docker-compose.yml`). Key files include `main.py` and `settings.py`.
+
+## Development Environment
+- **Operating System:** Windows
+- **Default Shell:** PowerShell (`pwsh.exe`). Please generate terminal commands compatible with PowerShell.
+
+## Coding Standards
+- **Linting & Formatting:** We use `ruff` for linting and formatting. Please adhere to `ruff` standards. The configuration can be found in the `.github/workflows/ruff.yml` workflow and potentially a `pyproject.toml` or `ruff.toml` file.
+- **Python Version:** 3.13
+- **Dependencies:** Dependencies are managed using `uv` and listed in `pyproject.toml`. Some commands you can run are `uv run pytest`, `uv add <package_name>`, `uv sync --upgrade`, and `uv run python main.py`.
+
+## General Guidelines
+- Follow Python best practices.
+- Write clear and concise code.
+- Only add comments where necessary to explain complex logic.
+- Ensure code is compatible with the Docker environment defined.
+- Use `uv` commands for package management and running scripts.
+    - For example, to run a script, use `uv run python main.py`.
+    - For package installation, use `uv add <package_name>`.
+    - For testing, use `uv run pytest`.
+    - For linting and formatting, use `uv run ruff`.
+- For Docker-related tasks, use the `docker` and `docker-compose` commands as needed.
+- For example, to build the Docker image, use `docker build -t <image_name> .`.
+- To run the Docker container, use `docker run <image_name>` or `docker-compose up` for multi-container setups.
+- For stopping and removing containers, use `docker stop <container_id>` and `docker rm <container_id>`.
+
+## Discord Bot Functionality
+- **Chat Interaction:** The bot responds to messages containing "lovibot" or its mention (`<@345000831499894795>`) by using the OpenAI chat API (`gpt-4o-mini`). See the `on_message` event handler and `misc.chat` function.
+- **Slash Commands:**
+    - `/ask <text>`: Ask the AI a question directly. Uses `misc.chat`.
+- **Context Menu Commands:**
+    - `Enhance Image`: Right-click on a message containing an image to enhance it using three different OpenCV methods (`enhance_image1`, `enhance_image2`, `enhance_image3`).
+- **User Restrictions:** Interaction is limited to users listed in `misc.get_allowed_users()`. Image creation has further restrictions.