Add caseflip extension

[thibaultsablon]

Description

Flips lower and upper cases of a string. eg: from "i WILL SEND YOU THIS asap!" to "I will send you this ASAP!"
Simply copy your text, run the extension, and it will replace the selection with the flipped text or write it at the cursor, and keep it in clipboard.
Useful for those who use the caps key and toggle it wrongly.

Screencast

https://share.cleanshot.com/NZh3K1k6

Checklist

• I read the extension guidelines
• I read the documentation about publishing
• I ran npm run build and tested this distribution build in Raycast
• I checked that files in the assets folder are used by the extension itself
• I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Congratulations on your new Raycast extension! 🚀

We're currently experiencing a high volume of incoming requests. As a result, the initial review may take up to 10-15 business days.

Once the PR is approved and merged, the extension will be available on our Store.

[greptile-apps]

Greptile Overview

Greptile Summary

This PR adds a new CaseFlip extension that toggles uppercase and lowercase letters in text from the clipboard. The extension reads text from clipboard, flips the case of all alphabetic characters, then pastes and copies the result.

Key Changes:

• Added new no-view command extension with proper configuration
• Implements simple character case flipping logic
• Uses Raycast clipboard API for reading and pasting

Issues Found:

• Missing error handling for empty clipboard (will crash if clipboard is empty)
• Typo in comment: "punctiation" should be "punctuation"

Confidence Score: 3/5

• This PR has a critical bug that will crash the extension when clipboard is empty
• The missing error handling for empty clipboard is a critical issue that will cause runtime failures. Once fixed, the extension is simple and safe.
• Pay attention to extensions/caseflip/src/caseflip.ts for the missing error handling

Important Files Changed

Filename	Overview
extensions/caseflip/src/caseflip.ts	Main extension logic with typo and missing error handling for empty clipboard
extensions/caseflip/package.json	Properly configured with correct dependencies and metadata

[greptile-apps]

_{2 files reviewed, 2 comments}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

Typo: "punctiation" should be "punctuation"

Suggested change

	// Function to flip upper/lower cases but keep spaces and punctiation
	// Function to flip upper/lower cases but keep spaces and punctuation

[greptile-apps]

Clipboard.readText() can return an empty string or potentially fail. The extension will crash if the clipboard is empty or contains non-text content.

Add error handling:

const originalText = (await Clipboard.readText()) || "";
if (!originalText) {
  await showHUD("No text in clipboard");
  return;
}