feat: add bgp observability and admin ui improvements

backend/app/services/collectors/epoch_ai.py

@@ -6,7 +6,7 @@ https://epoch.ai/data/gpu-clusters
 
 import re
 from typing import Dict, Any, List
-from datetime import datetime
+from datetime import UTC, datetime
 from bs4 import BeautifulSoup
 import httpx
 
@@ -64,7 +64,7 @@ class EpochAIGPUCollector(BaseCollector):
                             "metadata": {
                                 "raw_data": perf_cell,
                             },
-                            "reference_date": datetime.utcnow().strftime("%Y-%m-%d"),
+                            "reference_date": datetime.now(UTC).strftime("%Y-%m-%d"),
                         }
                         data.append(entry)
                     except (ValueError, IndexError, AttributeError):
@@ -114,6 +114,6 @@ class EpochAIGPUCollector(BaseCollector):
                 "metadata": {
                     "note": "Sample data - Epoch AI page structure may vary",
                 },
-                "reference_date": datetime.utcnow().strftime("%Y-%m-%d"),
+                "reference_date": datetime.now(UTC).strftime("%Y-%m-%d"),
             },
         ]