Case-insensitive file mention matching with @

Feature Request

When typing @ to mention a file in the Claude Code terminal, suggestions are currently case-sensitive. This means users must type the exact casing (e.g. ItemListView) to get the correct file suggestion.

Expected Behavior

File suggestions should match case-insensitively, so typing itemlistview or itemlistView would still surface ItemListView.swift.

Why

In Swift/iOS projects, files are typically named in PascalCase (e.g. FAProductSelectionDelegate.swift, ItemListViewModel.swift). Requiring exact casing slows down the workflow when mentioning files in prompts.

Suggested Solution

Add a setting (e.g. fileSearch.caseSensitive: false) to allow users to opt into case-insensitive @ file mention matching.