LLMs for generative AI are designed to summarize information based on grounded knowledge. They don't list all files by default.
To list all files, you may need to use an action call flow and retrieve the info.
I haven't spent much time tweaking the agent, but the result is unreliable. Sometimes it shows only 10 files, and the file names don't always start with my preferred prefix text. I suggest using something else for prefix file searching.
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