Feature/3438 uv windows support

[fbeltrao]

Description

Adds uv support to the Windows batch script isaaclab.bat to match the functionality already available in the bash version isaaclab.sh.

All changes are in isaaclab.bat file:

• Modified extract_python_exe: Added detection for VIRTUAL_ENV environment variable to support uv virtual environments
• Added extract_pip_command: Detects uv environments and returns appropriate pip command (uv pip install vs python -m pip install)
• Added extract_pip_uninstall_command: Similar detection logic for uninstall operations
• Added setup_uv_env: Creates and configures uv environments with Isaac Lab settings
• Added -u/--uv arguments: Create uv environments with optional name parameter (defaults to "env_isaaclab")

Fixes #3438

Type of change

• New feature (non-breaking change which adds functionality)

Checklist

• I have read and understood the contribution guidelines
• I have run the pre-commit checks with ./isaaclab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there

[greptile-apps]

Greptile Overview

Greptile Summary

This PR successfully adds UV package manager support to the Windows batch script (isaaclab.bat), bringing feature parity with the existing bash implementation (isaaclab.sh).

Key Changes:

• Added extract_pip_command and extract_pip_uninstall_command functions that detect UV environments by checking VIRTUAL_ENV and pyvenv.cfg
• Added setup_uv_env function that creates UV virtual environments and configures activation scripts with Isaac Lab and Isaac Sim environment variables
• Modified extract_python_exe to detect UV environments via VIRTUAL_ENV variable
• Added -u/--uv command-line arguments to create UV environments with optional custom names
• Updated all pip install/uninstall calls throughout the script to use the detected pip command (either uv pip or python -m pip)
• Updated help text and error messages to reference UV alongside Conda

Implementation Quality:
The implementation closely follows the bash version's logic while adapting appropriately for Windows batch scripting (e.g., using Scripts\activate.bat instead of bin/activate, doskey for aliases, proper Windows path separators). The code correctly handles UV environment detection, environment creation, and activation script configuration.

Confidence Score: 4/5

• This PR is safe to merge with minimal risk - it adds new functionality without modifying existing workflows
• Score of 4 reflects well-structured implementation that mirrors the tested bash version, with proper error handling and environment detection logic. Minor deduction because: (1) the bash version has an unused python_path parameter in setup_uv_env that suggests the feature may be incomplete in both scripts, and (2) Windows batch testing is harder to automate, so manual testing verification is important
• No files require special attention - isaaclab.bat changes are additive and well-isolated

Important Files Changed

File Analysis

Filename	Score	Overview
CONTRIBUTORS.md	5/5	Added author name to contributors list - straightforward alphabetically-ordered addition
isaaclab.bat	4/5	Added UV environment support with pip detection, environment creation, and activation script configuration - mirrors bash functionality with Windows-specific adaptations

Sequence Diagram

sequenceDiagram
    participant User
    participant isaaclab.bat
    participant UV
    participant Python

    User->>isaaclab.bat: Execute with -u/--uv flag
    isaaclab.bat->>isaaclab.bat: Check if UV installed
    alt UV not found
        isaaclab.bat-->>User: Error: UV not installed
    end
    
    isaaclab.bat->>isaaclab.bat: Check _isaac_sim symlink
    alt Missing symlink & no pip install
        isaaclab.bat-->>User: Warning message
    end
    
    isaaclab.bat->>UV: Create environment (uv venv --clear)
    UV-->>isaaclab.bat: Environment created
    
    isaaclab.bat->>isaaclab.bat: Verify activate.bat exists
    alt Activation script missing
        isaaclab.bat-->>User: Error: Failed to create activation script
    end
    
    isaaclab.bat->>isaaclab.bat: Append ISAACLAB_PATH to activate.bat
    isaaclab.bat->>isaaclab.bat: Append doskey alias to activate.bat
    isaaclab.bat->>isaaclab.bat: Append RESOURCE_NAME to activate.bat
    
    isaaclab.bat->>isaaclab.bat: Call extract_isaacsim_path
    alt Isaac Sim path exists
        isaaclab.bat->>isaaclab.bat: Append Isaac Sim env vars to activate.bat
    end
    
    isaaclab.bat-->>User: Success message with activation instructions
    
    Note over User,Python: When installing packages
    User->>isaaclab.bat: Execute with -i flag
    isaaclab.bat->>isaaclab.bat: Call extract_pip_command
    
    alt UV environment detected
        isaaclab.bat->>isaaclab.bat: Check VIRTUAL_ENV/pyvenv.cfg for "uv"
        isaaclab.bat->>UV: Use "uv pip install"
    else Standard environment
        isaaclab.bat->>Python: Use "python -m pip install"
    end

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