- Add onClick handler to file row div in PackageFileTree so clicks
anywhere on the row select the file (not just the inner button)
- Replace "Add" button with compact "+" icon that reveals an inline
input with Create/Cancel actions
- Hide file name input until "+" is clicked to reduce visual clutter
- Validate new file paths: reject ".." path traversal segments
- Change placeholder from "docs/TOOLS.md" to "TOOLS.md"
Co-Authored-By: Paperclip <noreply@paperclip.ing>
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