fix: use decodeURIComponent in openFile

[vivekfyi]

Fixes copyLink function for the files and folder with special character in their name

Related GitHub Issue

Closes: #4687

Roo Code Task Context (Optional)

NA

Description

passing filePath to decodeURIComponent to correctly decode special characters like "["
Why: This was breaking openFile functionality where folder/file name contains special character.

Test Procedure

Created a sample directory similar with following files

src/
src/[notwork]/
src/[notwork]/tst.txt
src/work/
src/work/test2.txt

Prompt Roo Code in code mode to "response me with all the file in the project"
This will list files tst.txt and test2.txt both should open correctly on clicking. Verified this.

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Testing: New and/or updated tests have been added to cover my changes (if applicable).
• Documentation Impact: I have considered if my changes require documentation updates (see "Documentation Updates" section below).
• Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Screenshots / Videos

State	Demo Link
Before Fix	View Demo
After Fix	View Demo

Documentation Updates

Does this PR necessitate updates to user-facing documentation?

• No documentation updates are required.
• Yes, documentation updates are required. (Please describe what needs to be updated or link to a PR in the docs repository).

Additional Notes

Get in Touch

---

Important

Fixes openFile in open-file.ts to handle special characters in file paths using decodeURIComponent.

• Behavior:
  • Fixes openFile function in open-file.ts to correctly handle file paths with special characters by using decodeURIComponent.
  • Ensures files and folders with special characters like [ can be opened correctly.
• Testing:
  • Verified with a directory structure containing special characters in file and folder names.

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[daniel-lxs]

Thank you for the contribution! I added some tests and also improved error handling a bit.