feat: add type hints, new CLI features, and improve project structure

chore: add uv.lock to gitignore

Major changes:
- Add type hints and docstrings to all functions (PEP 484)
- Add __main__.py for module execution (python -m genpass)
- Expose public API in __init__.py
- Add config file support (~/.genpass/config.json)
- Add entropy calculation (--entropy)
- Add clipboard support (--clipboard/-c)
- Add ambiguous characters exclusion (--no-ambiguous)
- Add output formats: plain, json, delimited (--format)
- Add sensible defaults (all character types enabled by default)
- Add input validation for length and count
- Update shell completions for all new options
- Add pre-commit config with ruff, mypy, black
- Update pyproject.toml with dev dependencies and tool configs
- Add requirements.txt and requirements-dev.txt
- Update README.md with comprehensive examples

BREAKING CHANGE: Default behavior now includes all character types

pyproject.toml

@@ -1,14 +1,103 @@
 [project]
 name = "genpass"
-version = "1.0.0"
+version = "2.0.0"
 description = "Secure password generator CLI"
 authors = [{ name = "kilyabin" }]
 readme = "README.md"
-license = "MIT"
+license = { text = "MIT" }
 requires-python = ">= 3.8"
+keywords = ["password", "generator", "security", "cli", "random"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Intended Audience :: End Users/Desktop",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Security",
+    "Topic :: Utilities",
+]
+
+dependencies = [
+    "pyperclip>=1.8.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0.0",
+    "pytest-cov>=4.0.0",
+    "ruff>=0.1.0",
+    "mypy>=1.0.0",
+    "black>=23.0.0",
+    "pre-commit>=3.0.0",
+]
 
 [project.scripts]
 genpass = "genpass.cli:main"
 
+[project.urls]
+Homepage = "https://github.com/kilyabin/GenPass"
+Repository = "https://github.com/kilyabin/GenPass.git"
+Issues = "https://github.com/kilyabin/GenPass/issues"
+Changelog = "https://github.com/kilyabin/GenPass/blob/main/CHANGELOG.md"
+
 [tool.setuptools]
 packages = ["genpass"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_functions = ["test_*"]
+addopts = "-v --cov=genpass --cov-report=term-missing"
+
+[tool.ruff]
+line-length = 100
+target-version = "py38"
+
+[tool.ruff.lint]
+select = [
+    "E",   # pycodestyle errors
+    "W",   # pycodestyle warnings
+    "F",   # pyflakes
+    "I",   # isort
+    "B",   # flake8-bugbear
+    "C4",  # flake8-comprehensions
+    "UP",  # pyupgrade
+]
+ignore = ["E501"]
+
+[tool.ruff.lint.isort]
+known-first-party = ["genpass"]
+
+[tool.mypy]
+python_version = "3.9"
+warn_return_any = true
+warn_unused_configs = true
+disallow_untyped_defs = true
+disallow_incomplete_defs = true
+check_untyped_defs = true
+no_implicit_optional = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+
+[tool.black]
+line-length = 100
+target-version = ["py38", "py39", "py310", "py311", "py312"]
+include = '\.pyi?$'
+exclude = '''
+/(
+    \.git
+  | \.hg
+  | \.mypy_cache
+  | \.tox
+  | \.venv
+  | _build
+  | buck-out
+  | build
+  | dist
+)/
+'''