feat(zto): cross-month calendar navigation instead of fallback to today

When the offset target date falls outside the current two-month view, flip .prev months (1 month/step) until the target day cell enters month1 view, instead of silently falling back to today. JS-dispatched clicks avoid the .date-range-length-tip hover interception.

Also switch the expected (#beginDate) day-cell click to _dom_click (matching actual #daterange): the range-length tooltip intercepts the second click on non-today cells during single-day range selection, causing timeouts.

Verified end-to-end: offset=45 (-> 2026-06-14, cross-month) expected task succeeded and downloaded 6-14 data without fallback.

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

inbound_verify/sites/zto.py

@@ -93,6 +93,22 @@ def _dom_click(locator):
     )
 
 
+def _zto_flip_to_target_month(frame_locator, page, target_time, max_flips=12):
+    """中通日历(jQuery-Date-Range-Picker 双月视图)跨月导航：目标日期不在当前视窗时，
+    循环点 .prev 把目标月翻进 month1 视窗。offset 恒指向过去，故只往前翻；步长 1 月/次。
+    用 JS 派发点击(.evaluate("el=>el.click()"))避开 .date-range-length-tip 等 hover 遮挡。
+    返回 True 若目标格子最终可见。"""
+    sel = f"td div.day[time='{target_time}']"
+    for _ in range(max_flips):
+        if frame_locator.locator(sel).first.is_visible():
+            return True
+        frame_locator.locator(".date-picker-wrapper .prev").first.evaluate(
+            "el => el.click()"
+        )
+        page.wait_for_timeout(450)
+    return frame_locator.locator(sel).first.is_visible()
+
+
 def zto_smart_menu_click(page, menu_path):
     """中通菜单导航"""
     print(f">> 正在导航: {' -> '.join(menu_path)}")
@@ -158,15 +174,19 @@ def zto_expected_download_impl(page, force=False):
             target_time = today_time - offset * 86400000
             target_cell = ewb_frame.locator(f"td div.day[time='{target_time}']").first
 
-            if target_cell.is_visible():
-                target_cell.click()
-                page.wait_for_timeout(300)
-                target_cell.click()
-            else:
-                print("   ⚠️ 偏移日期不在当前日历视窗内，自动降级为查询当天。")
-                today_cell.click()
-                page.wait_for_timeout(300)
-                today_cell.click()
+            # 偏移日期跨月时目标格子不在当前双月视窗 → 向前翻月把它带进视窗，不再降级为当天
+            if not target_cell.is_visible():
+                print("   ℹ️ 偏移日期跨月，正在向前翻月导航到目标 ...")
+                if not _zto_flip_to_target_month(ewb_frame, page, target_time):
+                    raise RuntimeError(
+                        f"翻月后仍无法定位目标日期格子(time={target_time})"
+                    )
+            # 日期格子用 _dom_click 直接派发事件（同实到）：.click() 会先 hover 格子，触发
+            # “范围长度”提示气泡(.date-range-length-tip)盖住格子导致点击被遮挡超时，
+            # 跨月选中非今日格子时尤为明显。
+            _dom_click(target_cell)
+            page.wait_for_timeout(300)
+            _dom_click(target_cell)
         else:
             today_cell.click()
             page.wait_for_timeout(300)
@@ -404,14 +424,16 @@ def zto_actual_download_impl(page):
 
             # 日期格子用 _dom_click 直接派发事件：Playwright 的 .click() 会先 hover 格子，
             # 触发“范围长度”提示气泡(.date-range-length-tip)盖住格子，导致点击被判遮挡而超时。
-            if target_cell.is_visible():
-                _dom_click(target_cell)
-                page.wait_for_timeout(300)
-                _dom_click(target_cell)
-            else:
-                _dom_click(today_cell)
-                page.wait_for_timeout(300)
-                _dom_click(today_cell)
+            # 偏移日期跨月时目标格子不在当前双月视窗 → 向前翻月把它带进视窗，不再降级为当天。
+            if not target_cell.is_visible():
+                print("   ℹ️ 偏移日期跨月，正在向前翻月导航到目标 ...")
+                if not _zto_flip_to_target_month(arr_frame, page, target_time):
+                    raise RuntimeError(
+                        f"翻月后仍无法定位目标日期格子(time={target_time})"
+                    )
+            _dom_click(target_cell)
+            page.wait_for_timeout(300)
+            _dom_click(target_cell)
         else:
             _dom_click(today_cell)
             page.wait_for_timeout(300)