fix(hooks): 用 merge-base 替代 rev-parse 修复 pre-push 变更文件检测

.husky/pre-push

@@ -4,8 +4,10 @@ npx tsc --noEmit
 
 # ESLint 严格检查（仅检查本次推送的变更文件，不阻塞不相关的旧代码）
 # 新分支无 upstream 时，回退到与 origin/main 对比
-BASE=$(git rev-parse --verify @{upstream} 2>/dev/null && echo "@{upstream}" || echo "origin/main")
-CHANGED_FILES=$(git diff --name-only --diff-filter=d "$BASE"...HEAD -- '*.ts' '*.tsx' '*.js' '*.jsx' '*.mjs')
+MERGE_BASE=$(git merge-base HEAD @{upstream} 2>/dev/null || git merge-base HEAD origin/main 2>/dev/null)
+if [ -n "$MERGE_BASE" ]; then
+  CHANGED_FILES=$(git diff --name-only --diff-filter=d "$MERGE_BASE" HEAD -- '*.ts' '*.tsx' '*.js' '*.jsx' '*.mjs')
   if [ -n "$CHANGED_FILES" ]; then
     echo "$CHANGED_FILES" | xargs npx eslint --max-warnings=0
   fi
+fi