ci: add gitlab-ci and pre-commit-config files

.gitlab-ci.yml

+variables:
+  UV_VERSION: 0.5
+  PYTHON_VERSION: 3.12
+  BASE_LAYER: bookworm-slim
+  UV_CACHE_DIR: .uv-cache
+  UV_SYSTEM_PYTHON: 1
+stages:
+  - build
+  - test
+  - lint
+pre-commit:
+  stage: build
+  image: python:3.11
+  script:
+    - pip install pre-commit
+    - pre-commit run --all-files
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == "main"
+pytest:
+  stage: test
+  image: ghcr.io/astral-sh/uv:$UV_VERSION-python$PYTHON_VERSION-$BASE_LAYER
+  cache:
+    - key:
+        files:
+          - uv.lock
+      paths:
+        - $UV_CACHE_DIR
+  script:
+    - uv --version
+    - uv sync --all-extras
+    - uv pip list
+    - uv run pytest test
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == "main"
+ruff:
+  stage: lint
+  interruptible: true
+  image:
+    name: ghcr.io/astral-sh/ruff:0.9.9-alpine
+  before_script:
+    - cd $CI_PROJECT_DIR
+    - ruff --version
+  script:
+    - ruff check --output-format=gitlab > code-quality-report.json
+  artifacts:
+    reports:
+      codequality: $CI_PROJECT_DIR/code-quality-report.json
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == "main"

.pre-commit-config.yaml

+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.8.5
+    hooks:
+      - id: ruff
+        args: [--fix]
+      - id: ruff-format
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.3.0
+    hooks:
+      - id: codespell