ci: add Gitea Actions workflow for tests and linters

- .gitea/workflows/checks.yaml: runs on push to main and every PR,
  matrix Python 3.10-3.13 (matches requires-python >=3.10), steps:
  isort, black, ruff check, ruff format, mypy, pytest
- dev extras gain black, isort (needed by pip install -e .[dev] in CI)
  and setuptools>=61.0 (test_formatters_found_by_setuptools imports
  find_packages at runtime; Python 3.12+ venvs no longer bundle it)
- README gains pipeline status badge

Closes #53

.gitea/workflows/checks.yaml

@@ -0,0 +1,26 @@
+name: checks
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  checks:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: pip
+      - run: pip install -e .[dev]
+      - run: isort --check-only redmine_reporter tests
+      - run: black --check redmine_reporter tests
+      - run: ruff check redmine_reporter tests
+      - run: ruff format --check redmine_reporter tests
+      - run: mypy redmine_reporter
+      - run: pytest -v

README.md

@@ -1,5 +1,7 @@
 # redmine-reporter
 
+[![checks](https://git.akokos.ru/artem.kokos/redmine-reporter/actions/workflows/checks.yaml/badge.svg)](https://git.akokos.ru/artem.kokos/redmine-reporter/actions)
+
 CLI-инструмент для генерации отчётов по задачам Redmine на основе записей о затраченном времени.
 
 Проект предназначен для внутреннего использования с `https://red.eltex.loc/`.

pyproject.toml

@@ -33,6 +33,9 @@ dev = [
     "pytest>=7.0",
     "mypy>=1.0",
     "ruff>=0.1.0",
+    "black>=24.0",
+    "isort>=5.0",
+    "setuptools>=61.0",
 ]
 
 [project.scripts]