fix: Optimize Windows path compatibility

[svensxl]

This pull request improves the detection of local file paths in the isLocalPath utility, making it more robust and cross-platform. It expands support for Windows-specific path formats and updates the test suite to ensure all relevant cases are covered.

Enhancements to local path detection:

• Improved the isLocalPath function in src/commands/install.ts to recognize Windows drive letter paths (e.g., C:This pull request improves the detection of local file paths in the isLocalPath` utility, making it more robust and cross-platform. It expands support for Windows-specific path formats and updates the test suite to ensure all relevant cases are covered.

Enhancements to local path detection:

or C:/), UNC paths (e.g., \server\share), Windows-style relative paths (e.g., .This pull request improves the detection of local file paths in the isLocalPath` utility, making it more robust and cross-platform. It expands support for Windows-specific path formats and updates the test suite to ensure all relevant cases are covered.

Enhancements to local path detection:

or ..This pull request improves the detection of local file paths in the isLocalPath` utility, making it more robust and cross-platform. It expands support for Windows-specific path formats and updates the test suite to ensure all relevant cases are covered.

Enhancements to local path detection:

), and bare ~ as the home directory, in addition to Unix-style paths.

Expanded test coverage:

• Updated the test implementation in tests/commands/install.test.ts to match the new isLocalPath logic, ensuring correctness across platforms.
• Added comprehensive test cases for Windows drive letter paths, UNC paths, Windows-style relative paths, and edge cases (e.g., invalid drive letters and bare ~).