Clarify README positioning

[novis10813]

Summary

• Sharpen the project positioning for Factorium
• Add a clearer audience/use-case paragraph
• Keep installation, quick example, docs, status, and license easy to scan

Notes

Docs-only change.

[gemini-code-assist]

Code Review

This pull request updates the README.md to improve the project description, restructure the feature list, add a Status section, and refine the documentation links. The reviewer suggested changing the installation command from 'uv add factorium' to 'uv pip install factorium' to prevent errors for users who do not have a pyproject.toml file in their environment.

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[gemini-code-assist]

Using uv add factorium is intended for adding a dependency to an existing uv project (which requires a pyproject.toml file). For general users who simply want to install the package in a virtual environment or a Jupyter notebook, uv pip install factorium is the standard command and prevents "No pyproject.toml found" errors.

Suggested change

	uv add factorium
	uv pip install factorium