chore(dylint): set import_granularity style to crate

The perfectionist import_granularity lint defaults to module
granularity, which conflicts with the crate-granularity merged imports
used throughout the codebase. Set the style to crate for now so the lint
matches the existing convention. Switching to module is tracked in #432.

https://claude.ai/code/session_015ZyokLaZvcy5Yt8KpPxV3F

Author: claude

dylint.toml

@@ -19,6 +19,11 @@ prefix = [
     "LowerHex", "UpperHex", "Octal",
 ]
 
+# The intended long-term style is "module". It is set to "crate" for now.
+# See https://github.com/KSXGitHub/parallel-disk-usage/issues/432.
+["perfectionist::import_granularity"]
+style = "crate"
+
 ["perfectionist::macro_argument_binding"]
 deny_extra = ["debug_assert_op", "debug_assert_op_expr"]
 allow_extra = ["assert_op_expr"]