main:删除多余文档并清理项目目录

变更内容：
- 移除冗余文档，包括 Grafana 指南、指标对比、修复总结、OpenAPI 规范等。
- 精简项目文档结构，优化 README 文件内容。
- 提升文档层次清晰度，集中核心指南。

config/metrics.yaml

@@ -69,10 +69,33 @@ custom_metrics:
     labels: []
     buckets: [10, 100, 1000, 10000, 100000, 1000000]
 
-  # 添加更多自定义指标...
-  # my_custom_metric:
-  #   name: "my_metric_name"
-  #   type: counter|gauge|histogram
-  #   description: "指标描述"
-  #   labels: [label1, label2]
-  #   buckets: [...]  # 仅 histogram 需要
+  # 异步任务指标
+  jobs_created:
+    name: "jobs_created_total"
+    type: counter
+    description: "创建的异步任务总数"
+    labels: [algorithm]
+
+  jobs_completed:
+    name: "jobs_completed_total"
+    type: counter
+    description: "完成的异步任务总数"
+    labels: [algorithm, status]
+
+  job_execution_duration:
+    name: "job_execution_duration_seconds"
+    type: histogram
+    description: "异步任务执行时间"
+    labels: [algorithm]
+    buckets: [0.1, 0.5, 1, 5, 10, 30, 60, 120, 300]
+
+  webhook_deliveries:
+    name: "webhook_deliveries_total"
+    type: counter
+    description: "Webhook 回调发送总数"
+    labels: [status]
+  prime_check_total:
+    name: "prime_check"
+    type: counter
+    description: "出现问题的次数"
+    labels: [status]