**Title:** File search passes empty ripgrep type and fails

Title: File search passes empty ripgrep type and fails

Description

Copilot Desktop file/code searches fail across all projects with:

rg: unrecognized file type:

The file-search tool appears to pass an empty file type to ripgrep, equivalent to:

rg --type '' PATTERN

Reproduction

1. Open any project in Copilot Desktop.
2. Ask Copilot to search project files without specifying a language/file type.
3. Search fails with the error above.
4. Reproduces across all projects and sessions.

Observed

An empty type value fails consistently. A valid registered type such as js works.

Expected

When no file type is specified, omit the --type/-t argument entirely.

Environment

• Copilot Desktop/CLI version: 1.0.80
• OS: macOS Darwin
• Date observed: August 28, 2026

Inizia dal punto di ingresso dello strumento file-search in cui viene assemblato il comando ripgrep, poiché il payload non indica alcun file sorgente né alcun test. Riproduci una ricerca senza tipo di file e controlla gli argomenti generati; il lavoro è concluso quando il tipo vuoto non produce alcun argomento --type/-t, mentre un tipo valido continua a funzionare.