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_simulation_endpoints.py

@@ -31,6 +31,7 @@ def _load_simulation_module(monkeypatch):
         {
             "get_time": lambda name: {"HYDRAULIC TIMESTEP": "0:15:00"},
             "run_simulation": lambda **kwargs: None,
+            "run_online_simulation": lambda **kwargs: None,
             "query_corresponding_element_id_and_query_id": lambda name: SimpleNamespace(
                 fixed_pumps={}, variable_pumps={}
             ),
@@ -145,13 +146,13 @@ def test_pressure_regulation_requires_scheme_name(monkeypatch):
     assert response.status_code == 422
 
 
-def test_run_simulation_manually_by_date_uses_utc_aware_timestamps(monkeypatch):
+def test_run_simulation_manually_by_date_passes_aware_time_and_converts_minutes(monkeypatch):
     module = _load_simulation_module(monkeypatch)
     captured_calls = []
 
     monkeypatch.setattr(
         module.simulation,
-        "run_simulation",
+        "run_online_simulation",
         lambda **kwargs: captured_calls.append(kwargs),
     )
 
@@ -161,13 +162,13 @@ def test_run_simulation_manually_by_date_uses_utc_aware_timestamps(monkeypatch):
         30,
     )
 
-    assert [call["modify_pattern_start_time"] for call in captured_calls] == [
-        "2025-01-01T19:04:05+00:00",
-        "2025-01-01T19:19:05+00:00",
-    ]
+    assert captured_calls == [{
+        "name": "demo", "start_time": datetime(2025, 1, 1, 19, 4, 5, tzinfo=timezone.utc),
+        "duration_seconds": 1800,
+    }]
 
 
-def test_run_simulation_manually_by_date_uses_hydraulic_timestep(monkeypatch):
+def test_run_simulation_manually_by_date_preserves_two_hour_window(monkeypatch):
     module = _load_simulation_module(monkeypatch)
     captured_calls = []
 
@@ -178,7 +179,7 @@ def test_run_simulation_manually_by_date_uses_hydraulic_timestep(monkeypatch):
     )
     monkeypatch.setattr(
         module.simulation,
-        "run_simulation",
+        "run_online_simulation",
         lambda **kwargs: captured_calls.append(kwargs),
     )
 
@@ -188,10 +189,8 @@ def test_run_simulation_manually_by_date_uses_hydraulic_timestep(monkeypatch):
         120,
     )
 
-    assert [call["modify_pattern_start_time"] for call in captured_calls] == [
-        "2025-01-01T16:00:00+00:00",
-        "2025-01-01T17:00:00+00:00",
-    ]
+    assert captured_calls[0]["duration_seconds"] == 7200
+    assert captured_calls[0]["start_time"] == datetime(2025, 1, 1, 16, 0, 0, tzinfo=timezone.utc)
 
 
 def test_runsimulationmanuallybydate_endpoint_accepts_timezone_aware_start_time(monkeypatch):