Notepad++^ can replace text at the beginning of each line, and $can replace text at the end of each line. Is it compatible? Urgent need

### Description

Notepad++^ can replace text at the beginning of each line, and $can replace text at the end of each line. Is it compatible? Urgent need

### Describe the solution you'd like

_No response_

### Describe alternatives you've considered

_No response_

The report does not name a file, test, or entry point. Start by reproducing beginning- and end-of-line replacement in the editor's search-and-replace flow, then identify the relevant implementation and verify the expected behavior with representative lines and regression coverage.

Written by the indexing model from the issue text.