[Chore] Migrate venv management to uv

[root-hbx]

This PR replaces conda with uv for modern venv management.

Reason for Changes

uv is a extremely fast Python package and project manager.

How to Test

# 1. uv installation
brew install uv

# 2. venv installation
cd StarPerf_Simulator/
uv sync

# 3. run and test
uv run python StarPerf.py

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[Copilot]

Pull request overview

This PR modernizes the project's virtual environment management by migrating from conda to uv, a fast Python package and project manager. The migration includes moving dependency declarations from requirements.txt to a standardized pyproject.toml file and updating documentation with new installation instructions.

Key Changes:

• Replaced requirements.txt with pyproject.toml following PEP 621 standards for modern Python project configuration
• Updated README with comprehensive uv installation instructions for multiple platforms (macOS/Linux/Windows) and new workflow commands
• Added .python-version file to specify Python 3.10 requirement and updated .gitignore for uv artifacts

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pyproject.toml	New project configuration file with metadata, dependencies (migrated from requirements.txt), and build system setup
requirements.txt	Removed in favor of pyproject.toml standard
README.md	Updated installation section with uv setup instructions for all platforms and revised command examples to use uv run
.python-version	Added to explicitly specify Python 3.10 as the project version
.gitignore	Added entries to ignore uv virtual environment (.venv/) and lockfile (uv.lock)

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