ci: add CI/CD pipeline with auto versioning and release

- Add GitHub Actions CI workflow (ruff lint/format, mypy, pytest matrix 3.11/3.12/3.13)
- Add release workflow with python-semantic-release for auto versioning
- Add pyproject.toml with all tool config (ruff, mypy, pytest, coverage, semantic-release)
- Add .gitignore for Python
- Add CHANGELOG.md
- Fix lint issues across codebase (formatting, raise-from, imports, Union syntax)

Author: SebTardif

.github/workflows/ci.yml

@@ -0,0 +1,75 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: Lint & Format
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install dependencies
+        run: pip install ruff
+
+      - name: Ruff check
+        run: ruff check .
+
+      - name: Ruff format check
+        run: ruff format --check .
+
+  type-check:
+    name: Type Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install dependencies
+        run: pip install mypy
+
+      - name: Mypy
+        continue-on-error: true
+        run: mypy minidb/
+
+  test:
+    name: Test (Python ${{ matrix.python-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: pip install pytest pytest-cov
+
+      - name: Run tests with coverage
+        run: pytest tests/ --cov=minidb --cov-report=term-missing --cov-report=xml
+
+      - name: Upload coverage
+        if: matrix.python-version == '3.13'
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage.xml

.github/workflows/release.yml

@@ -0,0 +1,55 @@
+name: Release
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: write
+  id-token: write
+
+jobs:
+  ci:
+    name: CI checks
+    uses: ./.github/workflows/ci.yml
+
+  release:
+    name: Semantic Release
+    needs: ci
+    runs-on: ubuntu-latest
+    if: github.repository_owner == 'sebtardif'
+    concurrency:
+      group: release
+      cancel-in-progress: false
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Python Semantic Release
+        id: release
+        uses: python-semantic-release/python-semantic-release@v9
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Publish to GitHub Releases
+        if: steps.release.outputs.released == 'true'
+        uses: python-semantic-release/publish-action@v9
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build package
+        if: steps.release.outputs.released == 'true'
+        run: pip install build && python -m build
+
+      - name: Publish to PyPI
+        if: steps.release.outputs.released == 'true'
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          skip-existing: true

.gitignore

@@ -0,0 +1,21 @@
+# Python
+__pycache__/
+*.py[cod]
+*.egg-info/
+dist/
+build/
+*.egg
+
+# Testing / Coverage
+.coverage
+coverage.xml
+htmlcov/
+.pytest_cache/
+
+# IDE
+.vscode/
+.idea/
+
+# OS
+.DS_Store
+Thumbs.db

CHANGELOG.md

@@ -0,0 +1,22 @@
+# CHANGELOG
+
+All notable changes to this project will be documented in this file.
+
+This changelog is automatically generated by
+[python-semantic-release](https://python-semantic-release.readthedocs.io/).
+
+<!--next-version-placeholder-->
+
+## v1.0.0 (Initial Release)
+
+### Features
+
+- CREATE TABLE with typed columns (INTEGER, STRING, FLOAT, BOOLEAN)
+- INSERT, SELECT, UPDATE, DELETE operations
+- WHERE clause with AND/OR, comparisons, LIKE, IN
+- ORDER BY (ASC/DESC) and LIMIT
+- GROUP BY with aggregations (COUNT, SUM, AVG, MIN, MAX)
+- INNER JOIN between tables
+- Automatic hash-based indexing on primary keys
+- Query planner with index scan vs table scan
+- Persistence to JSON files with versioning