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.

tests/api/test_openapi_contract.py

@@ -71,13 +71,13 @@ def test_rest_router_has_unique_method_path_pairs() -> None:
     assert len(pairs) == len(set(pairs))
 
 
-def test_removed_redis_management_routes_are_not_published() -> None:
+def test_retired_management_and_web_search_routes_are_not_published() -> None:
     published_paths = {
         route.path for route in api_router.routes if isinstance(route, APIRoute)
     }
 
     assert published_paths.isdisjoint(
-        {"/redis-keys/detail", "/redis-keys", "/all-redis", "/redis"}
+        {"/redis-keys/detail", "/redis-keys", "/all-redis", "/redis", "/web-searches"}
     )