fix: allow opening files without workspace root

[hannesrudolph]

The openFile function in open-file.ts was requiring a workspace root to be present, which prevented opening global files (like MCP settings) when no workspace was open. Modified the function to handle absolute paths without this requirement.

Previously, trying to open MCP settings in a new window without a workspace would error with "Could not open file: No workspace root found". Now the function properly handles both workspace-relative and absolute paths, allowing global settings files to be accessed in any context.

Changes:

• Removed workspace root requirement in openFile
• Added fallback for relative paths when no workspace is present

Description

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Checklist:

• My code follows the patterns of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation

Additional context

Related Issues

Reviewers

---

Important

Modified openFile in open-file.ts to handle absolute paths without requiring a workspace root, fixing issue #1053.

• Behavior:
  • Modified openFile in open-file.ts to handle absolute paths when no workspace is open.
  • Removed requirement for workspace root in openFile.
  • Added fallback for relative paths when no workspace is present.
• Error Handling:
  • Previously, opening files without a workspace root resulted in an error. Now, it handles both workspace-relative and absolute paths.

^{This description was created by for 90365c4. It will automatically update as commits are pushed.}

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