Revert "Try legacy behaviour"

This reverts commit 2da1956.

Author: nojaf

rewatch/src/build/build_types.rs

@@ -106,26 +106,7 @@ impl BuildState {
     }
 
     pub fn get_module(&self, module_name: &str) -> Option<&Module> {
-        // Try exact match first
-        if let Some(module) = self.modules.get(module_name) {
-            return Some(module);
-        }
-        // Fallback: try with first letter uncapitalized (legacy behavior)
-        // This matches the logic in compiler/gentype/ModuleResolver.ml:
-        // match map |> ModuleNameMap.find module_name with
-        // | resolved_module_dir -> Some (resolved_module_dir, Uppercase, bs_dependencies)
-        // | exception Not_found -> (
-        //   match map |> ModuleNameMap.find (module_name |> ModuleName.uncapitalize)
-        //   with | resolved_module_dir -> Some (resolved_module_dir, Lowercase, bs_dependencies)
-        //   | exception Not_found -> None)
-        if let Some(first_char) = module_name.chars().next() {
-            if first_char.is_ascii_uppercase() {
-                let mut uncapitalized = first_char.to_lowercase().collect::<String>();
-                uncapitalized.push_str(&module_name[1..]);
-                return self.modules.get(&uncapitalized);
-            }
-        }
-        None
+        self.modules.get(module_name)
     }
     pub fn new(
         project_root: PathBuf,