fix: declare python-dotenv dependency

[AyushKar2005]

Fixes #994

This PR adds python-dotenv as a direct runtime dependency.

The CLI imports from dotenv in cli/utils.py, specifically find_dotenv, load_dotenv, and set_key. But python-dotenv was not declared directly in pyproject.toml.

Because of that, a clean install could fail at runtime with:

ModuleNotFoundError: No module named 'dotenv'

if no transitive package happens to install it.

What changed

• Added python-dotenv>=1.0 to pyproject.toml
• Verified the CLI still compiles
• Verified the dotenv imports work after installing the package

Why this helps

Since the CLI directly imports dotenv, it should also declare python-dotenv directly instead of relying on some other dependency to bring it indirectly.

This makes clean installs more reliable.

Validation

I ran:

python -m compileall cli
python -m pip install -e .
python -c "from dotenv import find_dotenv, set_key; print('python-dotenv import ok')"

Result:

python-dotenv import ok

[gemini-code-assist]

Code Review

This pull request adds the python-dotenv dependency to pyproject.toml. The reviewer suggested adjusting the placement of this new dependency to maintain the alphabetical sorting of the dependencies list.

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[gemini-code-assist]

The dependencies list in pyproject.toml is sorted alphabetically. To maintain this order, python-dotenv should be placed before pytz (pyth comes before pytz).

Suggested change

	"pytz>=2025.2",
	"python-dotenv>=1.0",
	"python-dotenv>=1.0",
	"pytz>=2025.2",

[Yijia-Xiao]

Thanks @AyushKar2005. python-dotenv is already declared on main (2a58c22); closing as resolved.