完善后台任务中心历史摘要视图

- 为系统任务和插件调度补充批量历史摘要查询，支持最近成功时间、最近失败原因与累计成功失败次数

- 任务列表接口合并内存运行态与数据库日志态，服务重启后后台仍可回看最近执行结果

- 系统任务页与插件调度页新增健康状态、历史执行摘要与插件调度快捷启停入口

- 更新工程优化文档，记录 7.3 第一阶段当前进展

admin/dashboard/blueprints/plugin_schedules.py

@@ -40,7 +40,7 @@ def api_list_schedules():
     data = server.plugin_schedule_manager.list_schedules_with_runtime()
     # 后端统一格式化时间字段，避免前端出现 Fri, 17 Apr 2026 ... 这类 RFC 时间串。
     for row in data:
-        for key in ("next_run_at", "last_run_at", "created_at", "updated_at"):
+        for key in ("next_run_at", "last_run_at", "latest_success_at", "latest_failed_at", "created_at", "updated_at"):
             if key in row:
                 row[key] = _normalize_datetime_text(row.get(key))
     return jsonify({"success": True, "data": data})

admin/dashboard/blueprints/system_jobs.py

@@ -21,6 +21,40 @@ def _normalize_datetime_text(value):
     return text
 
 
+def _build_job_health_status(*, enabled: bool, running: bool, last_status: str, latest_success_at, latest_failure_summary: str) -> str:
+    """根据任务启停、运行态和历史结果输出后台可读的健康状态。"""
+    # 状态设计尽量贴近运维判断顺序：
+    # 1. 停用态单独标记，避免和“从未执行”混淆；
+    # 2. 执行中的任务优先展示 running，方便后台快速识别实时动作；
+    # 3. 最近一次执行失败时直接标记 failed，让异常任务在列表里一眼可见；
+    # 4. 有成功历史且最近不是失败时视为 healthy，否则落到 idle。
+    if not enabled:
+        return "disabled"
+    if running:
+        return "running"
+    if str(last_status or "").strip().lower() == "failed":
+        return "failed"
+    if latest_success_at or str(last_status or "").strip().lower() == "success":
+        return "healthy"
+    if str(latest_failure_summary or "").strip():
+        return "failed"
+    return "idle"
+
+
+def _build_job_health_message(*, health_status: str, latest_success_at, latest_failure_summary: str) -> str:
+    """为后台列表生成一句简短的任务健康提示。"""
+    if health_status == "disabled":
+        return "任务已停用"
+    if health_status == "running":
+        return "任务正在执行中"
+    if health_status == "failed":
+        return str(latest_failure_summary or "最近一次执行失败").strip()
+    if health_status == "healthy":
+        success_text = _normalize_datetime_text(latest_success_at)
+        return f"最近成功于 {success_text}" if success_text else "任务近期执行正常"
+    return "暂无执行记录"
+
+
 @system_jobs_bp.route("/")
 @login_required
 def page_system_jobs():
@@ -34,11 +68,31 @@ def api_list_jobs():
     db_rows = server.system_job_db.list_jobs()
     runtime_rows = async_job.get_jobs_snapshot()
     runtime_by_key = {row.get("job_key", ""): row for row in runtime_rows if row.get("job_key")}
+    job_keys = [str(row.get("job_key") or "").strip() for row in db_rows if str(row.get("job_key") or "").strip()]
+    latest_log_by_key = server.system_job_db.get_latest_logs_map(job_keys)
+    history_summary_by_key = server.system_job_db.get_job_history_summary_map(job_keys)
 
     result = []
     for row in db_rows:
         job_key = row.get("job_key")
         runtime = runtime_by_key.get(job_key, {})
+        latest_log = latest_log_by_key.get(job_key, {})
+        history_summary = history_summary_by_key.get(job_key, {})
+        last_status = runtime.get("last_status") or latest_log.get("status") or "never"
+        last_run_at = runtime.get("last_run_at") or latest_log.get("triggered_at")
+        last_error = runtime.get("last_error") or ""
+        if not last_error and str(last_status or "").strip().lower() == "failed":
+            last_error = (
+                str(latest_log.get("summary") or "").strip()
+                or str(history_summary.get("latest_failure_summary") or "").strip()
+            )
+        health_status = _build_job_health_status(
+            enabled=bool(row.get("enabled", 0)),
+            running=bool(runtime.get("running", False)),
+            last_status=str(last_status or ""),
+            latest_success_at=history_summary.get("latest_success_at"),
+            latest_failure_summary=str(history_summary.get("latest_failure_summary") or ""),
+        )
         result.append(
             {
                 "job_key": job_key,
@@ -51,14 +105,26 @@ def api_list_jobs():
                 "runtime_enabled": runtime.get("enabled"),
                 "running": runtime.get("running", False),
                 "trigger_text": runtime.get("trigger_text", ""),
-                "last_run_at": _normalize_datetime_text(runtime.get("last_run_at")),
-                "last_status": runtime.get("last_status"),
-                "last_error": runtime.get("last_error"),
-                "last_duration_ms": runtime.get("last_duration_ms"),
+                "last_run_at": _normalize_datetime_text(last_run_at),
+                "last_status": last_status,
+                "last_error": last_error,
+                "last_duration_ms": runtime.get("last_duration_ms") or latest_log.get("duration_ms"),
                 "next_run_at": _normalize_datetime_text(runtime.get("next_run_at")),
                 "run_count": runtime.get("run_count", 0),
                 "success_count": runtime.get("success_count", 0),
                 "fail_count": runtime.get("fail_count", 0),
+                "latest_success_at": _normalize_datetime_text(history_summary.get("latest_success_at")),
+                "latest_failed_at": _normalize_datetime_text(history_summary.get("latest_failed_at")),
+                "latest_failure_summary": str(history_summary.get("latest_failure_summary") or "").strip(),
+                "history_success_count": int(history_summary.get("history_success_count", 0) or 0),
+                "history_fail_count": int(history_summary.get("history_fail_count", 0) or 0),
+                "history_total_count": int(history_summary.get("history_total_count", 0) or 0),
+                "health_status": health_status,
+                "health_message": _build_job_health_message(
+                    health_status=health_status,
+                    latest_success_at=history_summary.get("latest_success_at"),
+                    latest_failure_summary=str(history_summary.get("latest_failure_summary") or "").strip(),
+                ),
             }
         )