diff --git a/pyproject.toml b/pyproject.toml
index aadd499..6f9dd39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,7 @@ dependencies = [
     "more-itertools>=10.8.0",
     "fire>=0.7.1",
     "pydantic>=2.12.4",
+    "beartype>=0.22.6",
     "jinja2>=3.1.6",
     "pydantic-settings>=2.12.0",
     "returns>=0.26.0",
@@ -47,6 +48,7 @@ packages = ["src/project", "src"]
 
 [tool.uv]
 default-groups = ["dev"]
+cache-dir = ".uv-cache"
 
 [tool.ruff]
 target-version = "py313"
@@ -154,8 +156,10 @@ dev = [
     "tox>=4.30.0",
     "hypothesis>=6.148.2",
     "pytest>=9.0.0",
+    "pytest-sugar>=1.1.1",
     "pytest-xdist>=3.8.0",
     "pytest-asyncio>=1.3.0",
+    "pytest-beartype>=0.2.0",
     "ruff>=0.14.4",
     "mypy>=1.18.0",
     "ty>=0.0.1a26",
diff --git a/uv.lock b/uv.lock
index 46c40d9..e90eb5d 100644
--- a/uv.lock
+++ b/uv.lock
@@ -245,6 +245,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/b7/b8/3fe70c75fe32afc4bb507f75563d39bc5642255d1d94f1f23604725780bf/babel-2.17.0-py3-none-any.whl", hash = "sha256:4d0b53093fdfb4b21c92b5213dba5a1b23885afa8383709427046b21c366e5f2", size = 10182537, upload-time = "2025-02-01T15:17:37.39Z" },
 ]
 
+[[package]]
+name = "beartype"
+version = "0.22.6"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/88/e2/105ceb1704cb80fe4ab3872529ab7b6f365cf7c74f725e6132d0efcf1560/beartype-0.22.6.tar.gz", hash = "sha256:97fbda69c20b48c5780ac2ca60ce3c1bb9af29b3a1a0216898ffabdd523e48f4", size = 1588975, upload-time = "2025-11-20T04:47:14.736Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/98/c9/ceecc71fe2c9495a1d8e08d44f5f31f5bca1350d5b2e27a4b6265424f59e/beartype-0.22.6-py3-none-any.whl", hash = "sha256:0584bc46a2ea2a871509679278cda992eadde676c01356ab0ac77421f3c9a093", size = 1324807, upload-time = "2025-11-20T04:47:11.837Z" },
+]
+
 [[package]]
 name = "beautifulsoup4"
 version = "4.14.2"
@@ -2265,6 +2274,7 @@ source = { editable = "." }
 dependencies = [
     { name = "aiofiles" },
     { name = "aiohttp" },
+    { name = "beartype" },
     { name = "beautifulsoup4" },
     { name = "cachetools" },
     { name = "click" },
@@ -2310,6 +2320,8 @@ dev = [
     { name = "pre-commit" },
     { name = "pytest" },
     { name = "pytest-asyncio" },
+    { name = "pytest-beartype" },
+    { name = "pytest-sugar" },
     { name = "pytest-xdist" },
     { name = "ruff" },
     { name = "tox" },
@@ -2324,6 +2336,7 @@ dev = [
 requires-dist = [
     { name = "aiofiles", specifier = ">=25.1.0" },
     { name = "aiohttp", specifier = ">=3.9.5" },
+    { name = "beartype", specifier = ">=0.22.6" },
     { name = "beautifulsoup4", specifier = ">=4.14.0" },
     { name = "cachetools", specifier = ">=6.2.1" },
     { name = "click", specifier = ">=8.3.1" },
@@ -2369,6 +2382,8 @@ dev = [
     { name = "pre-commit", specifier = ">=4.3.0" },
     { name = "pytest", specifier = ">=9.0.0" },
     { name = "pytest-asyncio", specifier = ">=1.3.0" },
+    { name = "pytest-beartype", specifier = ">=0.2.0" },
+    { name = "pytest-sugar", specifier = ">=1.1.1" },
     { name = "pytest-xdist", specifier = ">=3.8.0" },
     { name = "ruff", specifier = ">=0.14.4" },
     { name = "tox", specifier = ">=4.30.0" },
@@ -2753,6 +2768,32 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/e5/35/f8b19922b6a25bc0880171a2f1a003eaeb93657475193ab516fd87cac9da/pytest_asyncio-1.3.0-py3-none-any.whl", hash = "sha256:611e26147c7f77640e6d0a92a38ed17c3e9848063698d5c93d5aa7aa11cebff5", size = 15075, upload-time = "2025-11-10T16:07:45.537Z" },
 ]
 
+[[package]]
+name = "pytest-beartype"
+version = "0.2.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "beartype" },
+    { name = "pytest" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/63/69/954ee438f1c72f4247b09381cd07a7d776ebdb4f6c0359b3b971676a2eef/pytest_beartype-0.2.0.tar.gz", hash = "sha256:9eeec379f812e0e5c9c1bb7e95d90a33a79c387034f2d735e03bc9aa0fd7cf3f", size = 5871, upload-time = "2024-10-31T17:52:35.974Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/81/69/87efc2482aab172a32e4147eb5666ebc2e4c875e17d3104878553720a83a/pytest_beartype-0.2.0-py3-none-any.whl", hash = "sha256:be6be04be4a143f965f21140d6661bab43dcd7c761d50cf6daa1b16848e5d2d0", size = 4940, upload-time = "2024-10-31T17:52:33.528Z" },
+]
+
+[[package]]
+name = "pytest-sugar"
+version = "1.1.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pytest" },
+    { name = "termcolor" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/0b/4e/60fed105549297ba1a700e1ea7b828044842ea27d72c898990510b79b0e2/pytest-sugar-1.1.1.tar.gz", hash = "sha256:73b8b65163ebf10f9f671efab9eed3d56f20d2ca68bda83fa64740a92c08f65d", size = 16533, upload-time = "2025-08-23T12:19:35.737Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/87/d5/81d38a91c1fdafb6711f053f5a9b92ff788013b19821257c2c38c1e132df/pytest_sugar-1.1.1-py3-none-any.whl", hash = "sha256:2f8319b907548d5b9d03a171515c1d43d2e38e32bd8182a1781eb20b43344cc8", size = 11440, upload-time = "2025-08-23T12:19:34.894Z" },
+]
+
 [[package]]
 name = "pytest-xdist"
 version = "3.8.0"