Modernized build tooling

docs/api.md

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+# API Reference
+
+## CLI Module
+
+### `boilerplate.cli`
+
+The main command-line interface module.
+
+#### Functions
+
+##### `main(name: str, count: int) -> None`
+
+The main entry point for the CLI application.
+
+**Parameters:**
+- `name` (str): Name to greet (default: "World")
+- `count` (int): Number of times to repeat the greeting (default: 1)
+
+**Example:**
+```python
+from boilerplate.cli import main
+from click.testing import CliRunner
+
+runner = CliRunner()
+result = runner.invoke(main, ["--name", "Alice", "--count", "2"])
+print(result.output)
+# Hello, Alice!
+# Hello, Alice!
+```
+
+## Package Information
+
+### `boilerplate.__version__`
+
+The current version of the package.
+
+```python
+from boilerplate import __version__
+print(__version__)  # "0.1.0"
+```