fix: 连接 Pipeline 到爬取流程 + 夜间跳过 + 断网恢复

- CrawlService.run_spider 现在自动调用 PostCrawlPipeline（爬取→存储→筛选→去重→推送）
- 定时任务添加 22:00-06:00 夜间跳过逻辑
- 断网恢复后不会漏公告：爬虫每次从 API 按日期倒序抓取，未推送的公告下次自动补推
- Pipeline 的 _exclude_sent + mark_sent 防止重复推送

app/crawler/base.py

@@ -4,6 +4,14 @@ from dataclasses import dataclass, field
 from datetime import datetime
 
 
+@dataclass
+class PipelineResult:
+    stored: int = 0
+    filtered: int = 0
+    notified: int = 0
+    markdown_generated: bool = False
+
+
 @dataclass
 class CrawlResult:
     source_code: str
@@ -14,6 +22,7 @@ class CrawlResult:
     error_message: str | None = None
     crawled_at: datetime = field(default_factory=datetime.now)
     duration: float = 0.0
+    pipeline_result: PipelineResult | None = None
 
     @property
     def success(self) -> bool:
@@ -29,14 +38,6 @@ class PipelineConfig:
     mark_sent: bool = False
 
 
-@dataclass
-class PipelineResult:
-    stored: int = 0
-    filtered: int = 0
-    notified: int = 0
-    markdown_generated: bool = False
-
-
 class BaseSpider(ABC):
     name: str
     source_code: str