app/core/compare_alert_worker.py

@@ -127,13 +127,16 @@ def build_hits(
                 hit = _dc_replace(make_hit(rec, "T5", "深度放弃"), stuck_point=stuck)
             else:
                 # trace 判出卡点 → 上面带卡点报。其余一律回退耗时/步数兜底:可读但没判出卡点、
-                # 读不到、无 trace,都过 total_ms/step 阈值——超长放弃照报(卡点列留空),不再因
-                # 「trace 可读但不原地卡」把超长放弃整条吞掉(线上 trace 几乎总可读,否则耗时阈值形同虚设)。
+                # 读不到、无 trace,都过 total_ms/step 阈值——超长放弃照报,不再因「trace 可读但不
+                # 原地卡」把超长放弃整条吞掉(线上 trace 几乎总可读,否则耗时阈值形同虚设)。
                 hit = classify_cancelled_fallback(
                     rec,
                     cancelled_ms_threshold=cancelled_ms_threshold,
                     cancelled_step_threshold=cancelled_step_threshold,
                 )
+                # 没卡点但命中(超阈值放弃)→ 用末帧标「退出前在哪屏」(平台·环节·页面)
+                if hit is not None and res is not None and res.last is not None:
+                    hit = _dc_replace(hit, stuck_point=res.last.label())
             if hit is not None:
                 hits.append(hit)
         else:

app/services/compare_alert_format.py

@@ -180,7 +180,7 @@ _TABLE_COLUMNS = [
     {"name": "phone",  "display_name": "手机号",  "data_type": "text"},
     {"name": "cost",   "display_name": "用时",    "data_type": "text"},
     {"name": "reason", "display_name": "失败原因", "data_type": "text"},
-    {"name": "stuck",  "display_name": "卡点",    "data_type": "text"},
+    {"name": "stuck",  "display_name": "末帧",    "data_type": "text"},
     {"name": "ver",    "display_name": "版本",    "data_type": "text"},
     {"name": "trace",  "display_name": "trace",  "data_type": "lark_md"},
 ]

app/services/trace_stuck.py

@@ -46,17 +46,22 @@ class StuckPoint:
     pipeline_step: str
     frames: int               # 末段连续困住的帧数(上限 max_tail)
     stuck_ms: int | None = None  # 末段连续卡住的时长(ms);无 timestamp 时 None
+    detected_page: str | None = None  # 末帧所在页面(pricebot detected_page 原值);无则 None
 
     def label(self) -> str:
         p = PLATFORM_LABELS.get(self.platform, self.platform)
         s = PIPELINE_STEP_LABELS.get(self.pipeline_step, self.pipeline_step)
-        return f"{p}·{s}"
+        base = f"{p}·{s}"
+        if self.detected_page:
+            base += f"·{self.detected_page}"  # 页面暂用 pricebot 原值(英文),无中文映射
+        return base
 
 
 @dataclass(frozen=True)
 class StuckResult:
     readable: bool               # trace 是否读到(区分「读不到」与「读到但没卡」)
     points: list[StuckPoint]     # 卡死平台列表;readable=True 且空 = 确认没卡死
+    last: StuckPoint | None = None  # 末帧(帧数最多平台的末帧,带 detected_page);读不到 → None
 
 
 def dir_name_from_trace_url(trace_url: str | None) -> str | None:
@@ -108,7 +113,7 @@ def _platform_stuck(
     stuck_ms = round((t_last - t_first).total_seconds() * 1000) if t_last and t_first else None
     if stuck_ms is not None and stuck_ms < 0:
         stuck_ms = None  # 时钟不单调(帧 timestamp 回退)→ 降级为不显示时长
-    return StuckPoint(platform, last_ps, count, stuck_ms)
+    return StuckPoint(platform, last_ps, count, stuck_ms, detected_page=last_pg)
 
 
 def read_stuck_points(trace_dir: Path, *, threshold: int, max_tail: int) -> StuckResult:
@@ -118,6 +123,8 @@ def read_stuck_points(trace_dir: Path, *, threshold: int, max_tail: int) -> Stuc
             return StuckResult(readable=False, points=[])
         points: list[StuckPoint] = []
         any_frames = False
+        last: StuckPoint | None = None
+        best_n = -1
         for pdir in sorted(trace_dir.iterdir()):
             if not pdir.is_dir():
                 continue
@@ -128,9 +135,15 @@ def read_stuck_points(trace_dir: Path, *, threshold: int, max_tail: int) -> Stuc
             sp = _platform_stuck(pdir.name, step_files, threshold, max_tail)
             if sp is not None:
                 points.append(sp)
+            # 末帧:取帧数最多平台的末帧(与 last_step 同口径),带 detected_page
+            if len(step_files) > best_n:
+                ps, pg, _ = _read_head(step_files[-1])
+                if ps is not None:
+                    best_n = len(step_files)
+                    last = StuckPoint(pdir.name, ps, len(step_files), detected_page=pg)
         if not any_frames:
             return StuckResult(readable=False, points=[])
-        return StuckResult(readable=True, points=points)
+        return StuckResult(readable=True, points=points, last=last)
     except OSError:
         return StuckResult(readable=False, points=[])
 
@@ -151,9 +164,9 @@ def last_step(trace_dir: Path) -> StuckPoint | None:
         if best is None:
             return None
         _, platform, step_files = best
-        ps, _pg, _ts = _read_head(step_files[-1])
+        ps, pg, _ts = _read_head(step_files[-1])
         if ps is None:
             return None
-        return StuckPoint(platform, ps, len(step_files))  # stuck_ms=None(failed 不算时长)
+        return StuckPoint(platform, ps, len(step_files), detected_page=pg)  # stuck_ms=None(failed 不算时长)
     except OSError:
         return None

tests/test_compare_alert_format.py

@@ -282,8 +282,8 @@ def test_card_has_table_seven_columns():
     cols = table["columns"]
     assert len(cols) == 7
     display_names = [c["display_name"] for c in cols]
-    assert display_names == ["时间", "手机号", "用时", "失败原因", "卡点", "版本", "trace"]
-    # 「卡点」列在「失败原因」后、「版本」前
+    assert display_names == ["时间", "手机号", "用时", "失败原因", "末帧", "版本", "trace"]
+    # 「末帧」列在「失败原因」后、「版本」前
     names = [c["name"] for c in cols]
     reason_idx = names.index("reason")
     stuck_idx = names.index("stuck")

tests/test_compare_alert_stuck_worker.py

@@ -46,10 +46,11 @@ def test_cancelled_stuck_reports_via_trace(tmp_path):
     assert hits[0].reason == "深度放弃"
     assert "美团·加菜" in hits[0].stuck_point
     assert "帧" in hits[0].stuck_point
+    assert "meal_detail_popup" in hits[0].stuck_point  # 卡点带末帧页面
 
 
 def test_cancelled_readable_not_stuck_long_duration_reports(tmp_path):
-    # trace 可读但没判出原地卡点:仍过耗时/步数阈值兜底,超长(>90s)照报 T5,卡点列留空。
+    # trace 可读但没判出原地卡点:仍过耗时/步数阈值兜底,超长(>90s)照报 T5;没卡点也用末帧标"退出前在哪屏"。
     # (线上 trace 几乎总可读,若不回退则 total_ms 阈值形同虚设、超长放弃永不报——见 compare-fail-alert 排查。)
     p = tmp_path / "20260804_y" / "eleme"
     _frame(p, 0, "set_address", "home")
@@ -61,7 +62,7 @@ def test_cancelled_readable_not_stuck_long_duration_reports(tmp_path):
     assert len(hits) == 1
     assert hits[0].alert_type == "T5"
     assert hits[0].reason == "深度放弃"
-    assert hits[0].stuck_point is None  # 没卡点 → 卡片卡点列显 "-"
+    assert hits[0].stuck_point == "饿了么·进店·store"  # 无卡点 → 用末帧(平台·环节·页面)标退出前在哪屏
 
 
 def test_cancelled_readable_not_stuck_short_no_report(tmp_path):

tests/test_trace_stuck.py

@@ -29,7 +29,7 @@ def test_stuck_when_tail_repeats_same_step(tmp_path):
         _frame(pdir, i, "add_one_dish", "meal_detail_popup")
     res = read_stuck_points(tmp_path, threshold=15, max_tail=40)
     assert res.readable is True
-    assert res.points == [StuckPoint("meituan", "add_one_dish", 20)]
+    assert res.points == [StuckPoint("meituan", "add_one_dish", 20, detected_page="meal_detail_popup")]
 
 
 def test_not_stuck_when_progressing(tmp_path):
@@ -81,7 +81,7 @@ def test_per_platform_one_stuck_one_normal(tmp_path):
         _frame(e, i, "enter_store", "store")
     res = read_stuck_points(tmp_path, threshold=15, max_tail=40)
     assert res.readable is True
-    assert res.points == [StuckPoint("meituan", "add_one_dish", 18)]
+    assert res.points == [StuckPoint("meituan", "add_one_dish", 18, detected_page="meal_detail_popup")]
 
 
 def test_last_step_returns_busiest_platform_last_env(tmp_path):
@@ -92,7 +92,27 @@ def test_last_step_returns_busiest_platform_last_env(tmp_path):
     for i in range(3):
         _frame(e, i, "enter_store", "store")
     sp = last_step(tmp_path)
-    assert sp == StuckPoint("meituan", "add_one_dish", 20)
+    assert sp == StuckPoint("meituan", "add_one_dish", 20, detected_page="meal_detail_popup")
+
+
+def test_stuck_point_label_includes_page():
+    # label 带页面(平台/环节中文 + 页面原始英文);无页面时只到环节
+    assert StuckPoint("meituan", "add_one_dish", 20, detected_page="meal_detail_popup").label() \
+        == "美团·加菜·meal_detail_popup"
+    assert StuckPoint("meituan", "add_one_dish", 20).label() == "美团·加菜"
+
+
+def test_read_stuck_points_returns_last_frame(tmp_path):
+    # res.last = 帧数最多平台的末帧(带 detected_page),供"退出前在哪屏"用
+    m = tmp_path / "meituan"
+    for i in range(6):
+        _frame(m, i, "enter_store", "store")
+    _frame(m, 6, "add_one_dish", "menu")  # 末帧换到 menu
+    e = tmp_path / "eleme"
+    _frame(e, 0, "set_address", "home")
+    res = read_stuck_points(tmp_path, threshold=15, max_tail=40)
+    assert res.last == StuckPoint("meituan", "add_one_dish", 7, detected_page="menu")
+    assert res.points == []  # 没卡死,但末帧照样有
 
 
 def test_dir_name_from_trace_url():