fix(scripts): score.sh 使用 canon_diff 忽略尾部空白——匹配 2026test.sh 行为

performance 60/60 AC, functional 100/100 AC, h_functional 40/40 AC。

scripts/score.sh

@@ -23,6 +23,17 @@ BLUE='\033[0;34m'
 BOLD='\033[1m'
 NC='\033[0m'
 
+# 规范比较：忽略尾部空格和尾部空行（与 2026test.sh 的 canon_compare 一致）
+canon_diff() {
+  local f1="$1" f2="$2"
+  diff -q \
+    <(sed 's/\r$//; s/[[:space:]]*$//' "$f1" \
+      | awk '{lines[NR]=$0} END{last=NR; while(last>0&&lines[last]=="")last--; for(i=1;i<=last;i++)print lines[i]}') \
+    <(sed 's/\r$//; s/[[:space:]]*$//' "$f2" \
+      | awk '{lines[NR]=$0} END{last=NR; while(last>0&&lines[last]=="")last--; for(i=1;i<=last;i++)print lines[i]}') \
+    >/dev/null 2>&1
+}
+
 GCC="aarch64-linux-gnu-gcc"
 GCC_COMPILE_FLAGS="-std=gnu89 -O2 -x c"
 GCC_LINK_FLAGS="-static"
@@ -239,7 +250,7 @@ run_with_args() {
         echo "$exit_code"
       } > "$our_actual"
       if [[ -f "$out_file" ]]; then
-        diff -q "$our_actual" "$out_file" >/dev/null 2>&1 && our_correct=1
+        canon_diff "$our_actual" "$out_file" && our_correct=1
       else
         our_correct=1
       fi