Arash

### Description I have implemented the Luhn algorithm for validating card numbers in the project. This algorithm, widely used to verify the validity of credit card numbers, has been added...

isLuhn

1

## Description This PR introduces the isLuhn decorator, which validates credit card numbers using the Luhn algorithm. This decorator can be applied to ensure that the provided card numbers are...

lsp: prevent out-of-range panic in autoimports/completions when symbol name or position is invalid (fixes #1691)

2

### Summary Prevent a slice out-of-range panic in the LSP when computing completions/auto-imports for edge-case positions or empty symbol names. The change adds minimal bounds checks and early returns around...