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/geocoding.py

@@ -5,6 +5,9 @@ import httpx
 from pydantic import AliasChoices, BaseModel, Field
 
 from app.core.config import settings
+from app.core.tianditu_logging import install_tianditu_token_filter
+
+install_tianditu_token_filter()
 
 
 class TiandituGeocodeRequest(BaseModel):
@@ -32,12 +35,12 @@ async def geocode_tianditu(
     *,
     client: httpx.AsyncClient | None = None,
 ) -> dict[str, Any]:
-    if not settings.TIANDITU_GEOCODER_TOKEN:
-        raise TiandituGeocodingConfigError("TIANDITU_GEOCODER_TOKEN is not configured")
+    if not settings.TIANDITU_TOKEN:
+        raise TiandituGeocodingConfigError("TIANDITU_TOKEN is not configured")
 
     params = {
         "ds": json.dumps({"keyWord": request.keyword}, ensure_ascii=False),
-        "tk": settings.TIANDITU_GEOCODER_TOKEN,
+        "tk": settings.TIANDITU_TOKEN,
     }
 
     if client is not None: