From the source

File Mentions in CLI

Capability change

Amp added file-mention support to its CLI interactive mode, enabling users to fuzzy-search files by typing @ followed by a pattern and navigating results with Tab or Shift-Tab.

From the source
The Amp CLI now supports file mentions in interactive mode. Type @ followed by a pattern to fuzzy-search. Use Tab or Shift-Tab through the results, and hit Enter to confirm.
ampcode.com

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