Filter for files ending with .prompt in global Prompt Files

[iandolge]

Description

added a check that files end with ".prompt" when searching for files in the global prompt directories. Before this change, all files are collected for @Prompt Files

Checklist

• The relevant docs, if any, have been updated or created
• The relevant tests, if any, have been updated or created

Screenshots

N/A

Testing instructions

1. Add files ending with .prompt and .txt in ~/.continue/prompts
2. Write a new prompt using the @Prompt Files context.
3. Observe .txt file in the list before this change and only the .prompt file after this change.

[netlify]

✅ Deploy Preview for continuedev canceled.

Name	Link
🔨 Latest commit	a72cb1c
🔍 Latest deploy log	https://app.netlify.com/sites/continuedev/deploys/67c900b86c69b80008723aa9

[RomneyDa]

Nice, I noticed this one this week