feat: add pre-commit ruff

.pre-commit-config.yaml

@@ -0,0 +1,17 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-yaml
+      - id: check-added-large-files
+      - id: check-merge-conflict
+      - id: debug-statements
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.8.4
+    hooks:
+      - id: ruff
+        args: [--fix]
+      - id: ruff-format

README.md

@@ -11,3 +11,28 @@ tags: ["mcp-server-track"]
 ---
 
 Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+
+## Code Quality: pre-commit & Ruff
+
+This project uses [pre-commit](https://pre-commit.com/) and [ruff](https://docs.astral.sh/ruff/) to automatically check and format code before each commit.
+
+### Setup
+1. Create and activate the environment (if not already):
+   ```sh
+   uv venv mcp-qiskit-learn-env
+   source mcp-qiskit-learn-env/bin/activate
+   uv pip install -r requirements.txt
+   uv pip install pre-commit
+   ```
+2. Install the pre-commit hooks:
+   ```sh
+   pre-commit install
+   ```
+
+### Usage
+- Hooks will run automatically on `git commit`.
+- To manually check all files:
+  ```sh
+  pre-commit run --all-files
+  ```
+- Ruff will auto-fix and format Python code according to the configuration in `.pre-commit-config.yaml`.