Update pre-commit configuration and dependencies

- Added isort and ruff as pre-commit hooks for code formatting and linting.
- Removed main.py file as it is no longer needed.
- Updated pyproject.toml to include new development dependencies: ruff and ty.
- Updated uv.lock to reflect new package versions and added ruff and ty packages.

pyproject.toml

@@ -7,16 +7,6 @@ requires-python = ">=3.12"
 dependencies = ["django>=5.2.5"]
 
 
-[dependency-groups]
-dev = [
-    "git-cliff>=2.12.0",
-    "pre-commit>=4.3.0",
-    "pylint>=3.3.8",
-    "pylint-django>=2.6.1",
-    "pytest>=8.4.1",
-]
-
-
 [tool.black]
 line-length = 79
 include = '\.pyi?$'
@@ -70,6 +60,18 @@ exclude = [".git", "*migrations*", ".tox", ".venv", ".env"]
 extend-ignore = ["E501", "W503", "F403", "C901", "B904"]
 
 
+[dependency-groups]
+dev = [
+    "pre-commit>=4.3.0",
+    "pylint>=3.3.8",
+    "pylint-django>=2.6.1",
+    "pytest>=8.4.1",
+    "ruff>=0.14.14",
+    "git-cliff>=2.12.0",
+    "ty>=0.0.20",
+]
+
+
 [tool.git-cliff.changelog]
 # A Tera template to be rendered as the changelog's header.
 # See https://keats.github.io/tera/docs/#introduction
@@ -136,3 +138,21 @@ topo_order = false
 # Order of commits in each group/release within the changelog.
 # Allowed values: newest, oldest
 sort_commits = "oldest"
+
+
+[tool.ty.rules]
+unresolved-attribute = "ignore"
+unresolved-import = "ignore"
+division-by-zero = "warn"
+deprecated = "error"
+
+[tool.ty.src]
+# Remove `build` from the excluded directories.
+exclude = [
+    "!**/build/",
+    "**/dist/",
+    "**/*.egg-info/",
+    ".env/",
+    "venv/",
+    ".venv/",
+]