Clarify uv-managed Python requirement in local setup docs

[Copilot]

The README treated Python as an initial prerequisite for local development, even though uv can provision a compatible interpreter for the repository’s Python-based dev tooling. This updates the setup guidance so contributors do not assume a preinstalled Python is required when using uv.

• Prerequisites

  • Rewords the Python requirement as optional for contributors who want to supply their own interpreter.
  • Clarifies that uv can download a compatible Python version when needed.

• prek setup guidance

  • Adds an explicit note in the local quality-check section that the documented uv workflow works even when Python 3.13+ is not already installed locally.

• Example

  # Install Python dev tools, including prek
  uv sync --only-group dev
  
  # Run the standard hooks across the repository
  uv run prek run --all-files

[deepsource-io]

DeepSource Code Review

We reviewed changes in 6e080c5...27a8107 on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

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Overall Grade

Security   Reliability   Complexity   Hygiene

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
JavaScript		Sep 26, 2026 1:47a.m.	Review ↗
Secrets		Sep 26, 2026 1:47a.m.	Review ↗

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