feat(server): integrate MCP queries and investigation messaging

Add project-bound OAuth MCP queries and controlled analysis with scoped evidence,
limits, timeouts and a nearby-model spatial query using EPSG:4326 inputs.
Default nearby searches to 200 meters and five results.

Integrate investigation messaging/presentation, health/readiness and typed history;
remove duplicate web search and fix online simulation and compressed baseline writes.
Include project migrations 023-025; keep local credentials and demo seeding excluded.

Validation: 319 focused pytest checks; real PostGIS temporary-table regression;
read-only Jinqian bridge radius comparison; cross-language MCP discovery/calls.

app/services/burst_location.py

@@ -63,6 +63,7 @@ def run_burst_location_by_network(
     use_scada_flow: bool = False,
     scheme_name: str | None = None,
     simulation_run_id: UUID | None = None,
+    final_candidates_csv_path: str | None = "temp/burst_location/final_round_candidates.csv",
 ) -> dict[str, Any]:
     if not network:
         raise ValueError("network is required.")
@@ -312,6 +313,7 @@ def run_burst_location_by_network(
             min_dpressure=min_dpressure,
             basic_pressure=basic_pressure,
             visualize_partition=False,
+            final_candidates_csv_path=final_candidates_csv_path,
         )
 
     payload: dict[str, Any] = {