fix(expense): zip 버튼 라벨 변경 + 경로 폴백/진단 헤더

- "첨부 일괄(zip)" → "전부 다운로드(zip)"
- stored_path 깨진 경우 업로드루트/item_id/파일명 으로 폴백 탐색
- X-Attachment-Stats 헤더(total/added/missing)로 빈 zip 원인 진단

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/modules/expense/router.py

@@ -472,13 +472,33 @@ async def approved_attachments_zip(
     year, mon, raw = _parse_month(request)
     atts = store.approved_attachments(year=year, month=mon)
     names = _name_map(request)
+    upload_root = _upload_dir(request)
 
+    def _resolve(a: dict[str, Any]) -> Path | None:
+        """stored_path 우선, 없으면 현재 업로드 루트/item_id/파일명 으로 폴백."""
+        raw_path = a.get("stored_path") or ""
+        p = Path(raw_path)
+        if p.exists():
+            return p
+        # DATA_DIR 변경 등으로 절대경로가 깨진 경우 — basename 으로 재구성
+        item_id = a.get("item_id", "")
+        base = os.path.basename(raw_path) or a.get("filename", "")
+        if item_id and base:
+            alt = upload_root / item_id / base
+            if alt.exists():
+                return alt
+        return None
+
+    total = len(atts)
+    added = 0
+    missing = 0
     buf = io.BytesIO()
     used: dict[str, int] = {}
     with zipfile.ZipFile(buf, "w", zipfile.ZIP_DEFLATED) as zf:
         for a in atts:
-            path = Path(a.get("stored_path", ""))
-            if not path.exists():
+            path = _resolve(a)
+            if path is None:
+                missing += 1
                 continue
             nm = _display_name(a.get("owner", ""), names)
             fname = _att_download_name(a.get("uploaded_at"), nm, a.get("filename", ""))
@@ -491,12 +511,17 @@ async def approved_attachments_zip(
                 used[fname] = 1
                 arcname = fname
             zf.write(str(path), arcname=arcname)
+            added += 1
     buf.seek(0)
     zipname = f"expense_approved_{raw}.zip"
     return StreamingResponse(
         buf,
         media_type="application/zip",
-        headers={"Content-Disposition": f'attachment; filename="{zipname}"'},
+        headers={
+            "Content-Disposition": f'attachment; filename="{zipname}"',
+            # 진단용: 첨부 총개수 / 담긴 개수 / 디스크에서 못 찾은 개수
+            "X-Attachment-Stats": f"total={total};added={added};missing={missing}",
+        },
     )
 
 

app/modules/expense/templates/expense/approved.html

@@ -11,7 +11,7 @@
       <button type="submit" class="erp-btn erp-btn-outline">조회</button>
     </form>
     <a class="erp-btn erp-btn-primary" href="/expense/api/approved/export.xlsx?month={{ month }}">엑셀 다운</a>
-    <a class="erp-btn erp-btn-outline" href="/expense/api/approved/attachments.zip?month={{ month }}">첨부 일괄(zip)</a>
+    <a class="erp-btn erp-btn-outline" href="/expense/api/approved/attachments.zip?month={{ month }}">전부 다운로드(zip)</a>
   </div>
 
   <!-- ── 직원별 합계 ── -->