[Server] Normalize the file names.

src/plugins/server/kernel_project.ml

@@ -130,6 +130,9 @@ let () =
     ~page ~name:"kernel.project.getSourceFileNames"
     ~descr:(Md.plain "Get the source file names of the current project")
     ~input:(module Junit) ~output:(module Jstring.Jlist)
-    Kernel.Files.get
+    (fun () ->
+       List.map
+         (fun fname -> (Filepath.Normalized.of_string fname :> string))
+         (Kernel.Files.get ()))
 
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