fix: 活跃作业回退统计补充 elap_time + 过滤 T-Pod 占位符

Z1 从 DomainDetail 回退活跃作业时, 之前只统计了 owner/pid/design/t_pod,
漏了 elap_time (运行时间)。现在一并提取, 并过滤 '--' 占位符。

mailer.py

@@ -261,24 +261,30 @@ def collect_report_data() -> dict:
             domain_rows = DomainDetail.query.filter_by(snapshot_id=latest.id).all()
             if domain_rows:
                 # 按 (owner, pid, design) 去重统计活跃作业数
-                active_set = set()
+                active_set = {}  # key: (owner, pid) -> {design, t_pod, elap_time}
                 for dr in domain_rows:
                     owner = dr.owner or ""
                     pid = dr.pid or ""
                     if owner and owner not in ("NONE", "") and pid and pid not in ("0", ""):
-                        active_set.add((owner, pid, dr.design or "—", dr.t_pod or "—"))
+                        key = (owner, pid)
+                        if key not in active_set:
+                            active_set[key] = {
+                                "design": dr.design or "—",
+                                "t_pod": dr.t_pod or "—",
+                                "elap_time": dr.elap_time or "—",
+                            }
                 if active_set:
                     # 构造虚拟 job 对象供渲染 (兼容 jobs_active 格式)
                     class _VJob:
                         pass
-                    for idx, (o, p, design, tpod) in enumerate(sorted(active_set), 1):
+                    for idx, ((o, p), info) in enumerate(sorted(active_set.items()), 1):
                         j = _VJob()
                         j.job_index = idx
                         j.owner = o
                         j.pid = p
-                        j.t_pod = tpod
+                        j.t_pod = info["t_pod"] if "--" not in info["t_pod"] and info["t_pod"] not in ("—",) else "—"
-                        j.design = design
+                        j.design = info["design"]
-                        j.elap_time = ""
+                        j.elap_time = info["elap_time"] if info["elap_time"] not in ("—", "") else "—"
                         jobs_active.append(j)
         except (ImportError, AttributeError):
             pass