Performs exact string replacements in files.

Usage:

- You must use your `Read` tool at least once in the conversation before editing. This tool will error if you attempt an edit without reading the file.

- When editing text from Read tool output, ensure you preserve the exact indentation (tabs/spaces) as it appears AFTER the line number prefix. The line number prefix format is: line number + colon + space (e.g., `1: `). Everything after that space is the actual file content to match. Never include any part of the line number prefix in the oldString or newString.

- ALWAYS prefer editing existing files in the codebase. NEVER write new files unless explicitly required.

- Only use emojis if the user explicitly requests it. Avoid adding emojis to files unless asked.

- The edit will FAIL if `oldString` is not found in the file with an error "oldString not found in content".

- The edit will FAIL if `oldString` is found multiple times in the file with an error "Found multiple matches for oldString. Provide more surrounding lines in oldString to identify the correct match." Either provide a larger string with more surrounding context to make it unique or use `replaceAll` to change every instance of `oldString`.

- Use `replaceAll` for replacing and renaming strings across the file. This parameter is useful if you want to rename a variable for instance.