fix: resolve CI type checking and lint failures

app/depnav/pyproject.toml

@@ -0,0 +1,70 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "depnav"
+version = "0.1.0"
+description = "CLI Dependency Graph Navigator - Analyze codebases and generate interactive ASCII dependency graphs"
+readme = "README.md"
+requires-python = ">=3.9"
+license = {text = "MIT"}
+authors = [
+    {name = "Depnav Contributors"}
+]
+keywords = ["cli", "dependency", "graph", "navigation", "code-analysis"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+]
+dependencies = [
+    "rich>=14.0.0",
+    "tree-sitter>=0.23.0",
+    "tree-sitter-python>=0.23.0",
+    "tree-sitter-javascript>=0.23.0",
+    "tree-sitter-go>=0.23.0",
+    "networkx>=3.0.0",
+    "pyyaml>=6.0",
+    "click>=8.0.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0.0",
+    "pytest-cov>=4.0.0",
+    "black>=23.0.0",
+    "ruff>=0.1.0",
+    "mypy>=1.0.0",
+]
+
+[project.scripts]
+depnav = "depnav.cli:main"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_functions = ["test_*"]
+
+[tool.black]
+line-length = 100
+target-version = ['py39']
+
+[tool.ruff]
+line-length = 100
+target-version = "py39"
+
+[tool.mypy]
+python_version = "3.9"
+warn_return_any = true
+warn_unused_ignores = true
+ignore_missing_imports = true
+exclude = "tests/fixtures"