huskies: merge 851

script/test

@@ -21,6 +21,27 @@ else
   echo "Skipping frontend build (no frontend directory)"
 fi
 
+echo "=== Checking for duplicate module files (X.rs and X/mod.rs coexisting) ==="
+_dup_found=0
+while IFS= read -r -d '' _mod_file; do
+  _dir=$(dirname "$_mod_file")
+  _parent=$(dirname "$_dir")
+  _name=$(basename "$_dir")
+  _flat="$_parent/$_name.rs"
+  if [ -f "$_flat" ]; then
+    echo "ERROR [E0761]: duplicate module file — both files exist in the same source tree:"
+    echo "  $_flat"
+    echo "  $_mod_file"
+    echo "  Fix: git rm $_flat in the same commit that introduces $_mod_file"
+    _dup_found=1
+  fi
+done < <(find "$PROJECT_ROOT/server" "$PROJECT_ROOT/source-map-gen" \
+           -path "*/target" -prune -o -name "mod.rs" -print0 2>/dev/null)
+if [ "$_dup_found" -eq 1 ]; then
+  echo "FAIL: duplicate module files detected — remove the flat .rs file with git rm before committing."
+  exit 1
+fi
+
 echo "=== Checking Rust formatting ==="
 if cargo fmt --version &>/dev/null; then
   cargo fmt --manifest-path "$PROJECT_ROOT/Cargo.toml" --all --check