Update README.md to add app link

[patched-admin]

No description provided.

[patched-admin]

The pull request review highlights three major points: Firstly, it stresses the importance of verifying the security and legitimacy of the newly added external link https://app.patched.codes/signin in the README.md to prevent phishing or redirection attacks. Secondly, it notes a potential security risk introduced by changing the client_base_url from HTTPS to HTTP, warning that using unencrypted HTTP in production could expose vulnerabilities, and suggests clarifying if this change is solely for local development purposes. Lastly, it acknowledges the change from Llama-3 to Llama-3.1 in the Patchwork Assistant link and confirms its validity, assuming it is an intentional version update.

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• File changed: README.md
  1. The added app link https://app.patched.codes/signin in the README.md introduces an external link. Ensure this link is secure and verified to prevent potential phishing or redirection attacks.

2. The modification client_base_url=http://localhost:8080/v1 changes the URL scheme from HTTPS to HTTP. This may introduce security vulnerabilities if developers use this in production since HTTP is not encrypted and can be intercepted. If the change is intended for local development, it's essential to make a note of that in the documentation.
3. The change from Llama-3 to Llama-3.1 in the Patchwork Assistant link looks valid, assuming this is an intentional update to specify the new version.