refactor: rename core.stringhelpers to core.strings.helpers

src/core/gfx/core.gfx.fileicons.pas

@@ -14,7 +14,7 @@ interface
 
 uses
     core.strings,
-    core.stringhelpers;
+    core.strings.helpers;
 
 const
     { File-type icon PUA constants (U+E000..E078) — rendered by asuro_icons_* }

src/core/strings/core.strings.helpers.pas

@@ -9,7 +9,7 @@
 
     @author(Aaron Hance <[email protected]>)
 }
-unit core.stringhelpers;
+unit core.strings.helpers;
 
 interface