Add mypy and pyright checks

.github/workflows/pr-validation.yml

@@ -9,7 +9,7 @@ permissions:
 
 jobs:
   quality:
-    name: Black and Pylint
+    name: Black, Pylint, Mypy, and Pyright
     runs-on: ubuntu-latest
 
     steps:
@@ -32,6 +32,12 @@ jobs:
       - name: Lint with Pylint
         run: pylint src tests
 
+      - name: Typecheck with Mypy
+        run: mypy src
+
+      - name: Typecheck with Pyright
+        run: pyright src
+
   tests:
     name: Pytest (${{ matrix.python-version }})
     runs-on: ubuntu-latest

pyproject.toml

@@ -17,6 +17,8 @@ test = [
 dev = [
     "black>=24.0",
     "pylint>=3.3",
+    "mypy>=1.10",
+    "pyright>=1.1",
     "pytest>=8.0",
 ]
 
@@ -42,5 +44,15 @@ disable = [
     "missing-module-docstring",
 ]
 
+[tool.mypy]
+python_version = "3.10"
+warn_return_any = true
+warn_unused_configs = true
+disallow_untyped_defs = true
+
 [tool.pytest.ini_options]
 testpaths = ["tests"]
+
+[tool.pyright]
+pythonVersion = "3.10"
+typeCheckingMode = "basic"