release: bump version to 0.51.0

backend/app/api/v1/visualization.py

@@ -38,8 +38,12 @@ from app.services.compute_center_locations import (
     upsert_compute_center_location,
 )
 from app.services.ai_client import get_ai_provider_client
+from app.api.v1.settings import get_web_search_client
 from app.services.collectors.bgp_common import RIPE_RIS_COLLECTOR_COORDS
-from app.services.location.llm_fallback import collect_llm_location_fallback_candidate
+from app.services.location.llm_fallback import (
+    collect_llm_location_fallback_candidate,
+    collect_location_search_evidence,
+)
 from app.services.persistent_logs import record_system_log
 from app.services.vessel_ais_aggregation import (
     build_field_conflict_candidates,
@@ -1879,21 +1883,33 @@ async def collect_compute_center_location(
             city=city,
             country=country,
         )
+        llm_result = None
         try:
+            web_search_client = await get_web_search_client(db)
+            search_result = await collect_location_search_evidence(
+                web_search_client=web_search_client,
+                query=query,
+                entity_type="compute_center",
+            )
+            attempted_queries = [*attempted_queries, *search_result.attempted_queries]
+            if not search_result.evidence:
+                llm_failure_reason = search_result.failure_reason
+                raise RuntimeError(search_result.failure_reason or "no WebSearch evidence")
             provider_client = await get_ai_provider_client(db)
             llm_result = await collect_llm_location_fallback_candidate(
                 provider_client=provider_client,
                 query=query,
                 entity_type="compute_center",
                 attempted_queries=attempted_queries,
+                search_evidence=search_result.evidence,
             )
         except Exception as exc:
-            llm_result = None
-            llm_failure_reason = f"LLM location factcheck unavailable: {exc}"
-            attempted_queries = [
-                *attempted_queries,
-                f"llm_factcheck:compute_center:{name or source_id or 'unknown'}",
-            ]
+            if llm_failure_reason is None:
+                llm_failure_reason = f"LLM location factcheck unavailable: {exc}"
+                attempted_queries = [
+                    *attempted_queries,
+                    f"llm_factcheck:compute_center:{name or source_id or 'unknown'}",
+                ]
         if llm_result is not None:
             attempted_queries = [*attempted_queries, *llm_result.attempted_queries]
             candidates = llm_result.candidates