fix: 活跃作业从 DomainDetail 回退统计 + 修复 Gmail 嵌套 div 进度条

1. Z1 详细输出把作业存在 DomainDetail 而非 JobInfo, 增加回退逻辑
   按 (owner, pid, design) 去重统计活跃作业数
2. 移除利用率进度条的嵌套 div (Gmail 会过滤导致后续内容丢失)
   改为单元素蓝色进度条
3. 活跃作业卡片显示实际统计数而非 Snapshot 缓存值

mailer.py

@@ -254,6 +254,35 @@ def collect_report_data() -> dict:
     # ── 活跃作业 ──
     jobs_active = JobInfo.query.filter_by(snapshot_id=latest.id).order_by(JobInfo.job_index).all()
 
+    # Z1 详细输出把作业信息存在 DomainDetail 里, 若 JobInfo 为空则从 DomainDetail 回退
+    if not jobs_active:
+        try:
+            from app import DomainDetail
+            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()
+                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 "—"))
+                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):
+                        j = _VJob()
+                        j.job_index = idx
+                        j.owner = o
+                        j.pid = p
+                        j.t_pod = tpod
+                        j.design = design
+                        j.elap_time = ""
+                        jobs_active.append(j)
+        except (ImportError, AttributeError):
+            pass
+
     # ── 24h 统计 ──
     snaps_24h = ScanSnapshot.query.filter(
         ScanSnapshot.timestamp >= cutoff_24h
@@ -543,10 +572,8 @@ def _render_html(data: dict, base_url: str) -> str:
             f'<tr><td style="padding:4px 12px;font-family:monospace">{_fmt_ts(smp.timestamp, "%m-%d %H:%M")}</td>'
             f'<td style="padding:4px 12px;text-align:right;font-weight:bold">{smp.utilization:.1f}%</td>'
             f'<td style="padding:4px 12px">'
-            f'<div style="background:#e0e0e0;height:14px;width:200px;border-radius:2px">'
-            f'<div style="background:{DOMAIN_COLORS.get("downloaded", "#007bff")};'
-            f'height:14px;width:{min(smp.utilization, 100):.1f}%;border-radius:2px"></div>'
-            f'</div></td></tr>'
+            f'<span style="background:#007bff;color:#fff;padding:2px 6px;border-radius:2px;font-size:11px;font-weight:bold">{smp.utilization:.1f}%</span>'
+            f'</td></tr>'
             for smp in data["samples_24h"]
         )
         trend_html = f"""
@@ -607,14 +634,12 @@ def _render_html(data: dict, base_url: str) -> str:
         <div style="flex:1;min-width:200px;background:#f8f9fa;padding:14px;border-radius:6px;border-left:4px solid {DOMAIN_COLORS.get('downloaded')}">
           <div style="color:#888;font-size:12px">逻辑板利用率</div>
           <div style="font-size:24px;font-weight:bold;margin-top:4px;color:#007bff">{latest.utilization:.1f}%</div>
-          <div style="background:#e0e0e0;height:8px;border-radius:4px;margin-top:6px">
-            <div style="background:{DOMAIN_COLORS.get('downloaded')};height:8px;width:{util_bar_width};border-radius:4px"></div>
-          </div>
+          <div style="background:#007bff;height:8px;border-radius:4px;margin-top:6px;width:{util_bar_width}"></div>
           <div style="font-size:12px;margin-top:4px">使用 {latest.used_boards} / 空闲 {latest.online_boards - latest.used_boards}</div>
         </div>
         <div style="flex:1;min-width:140px;background:#f8f9fa;padding:14px;border-radius:6px;border-left:4px solid #28a745">
           <div style="color:#888;font-size:12px">活跃作业</div>
-          <div style="font-size:24px;font-weight:bold;margin-top:4px">{latest.active_jobs}</div>
+          <div style="font-size:24px;font-weight:bold;margin-top:4px">{len(data.get('jobs_active', []))}</div>
         </div>
       </div>