fix(vscode): trim Git command output

[marius-kilocode]

What Problem This Solves

Follow-up to #13863. The Git project-root resolver removed the unsupported --path-format option, but its output cleanup still removed only the final newline. Git command output should be normalized with the standard trailing-whitespace operation.

Why This Change Was Made

Use trimEnd() so CRLF output and any trailing command-output whitespace are removed consistently before path validation and canonicalization. This is a one-line review follow-up with no behavior change for normal paths.

Evidence

• Focused project-path tests: 11 passed, 0 failed.
• Extension typecheck passed.
• Prettier check passed.

This PR is intentionally limited to the review correction from #13863.

[kilo-code-bot]

Code Review Summary

lgtm

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• packages/kilo-vscode/src/agent-manager/project/paths.ts

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_{Review guidance: REVIEW.md from base branch main}