refactor: clean up project structure

- Remove old review reports (keep latest only)
- Move docs/ to deploy/docs-backup/
- Move performance-testing/ to deploy/
- Clean up test output files
- Organize root directory

.codebuddy/automations/sub2api/payload.json

@@ -0,0 +1,17 @@
+{
+  "new_issues_count": 0,
+  "p0_pending": 0,
+  "p1_pending": 1,
+  "health_score": 9,
+  "report_path": "REVIEW_REPORT_2026-04-06.md",
+  "summary": "第131次审查：无新问题，P0清零，健康度9/10",
+  "details": {
+    "p1_remaining": [
+      {
+        "id": "P1-08",
+        "description": "单机版告警规则指标名与代码不一致",
+        "file": "deploy/monitoring/prometheus/rules/sub2api-alerts-light.yml"
+      }
+    ]
+  }
+}