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/domain/schemas/operational_data.py

@@ -11,9 +11,48 @@ from app.domain.schemas.workbench_runtime import WorkbenchDateTime
 TaskDataSource = Literal[
     "workbench_runtime", "scada_devices", "scada_readings", "peripheral_points",
     "peripheral_work_orders", "peripheral_observations", "peripheral_test_data",
+
 ]
 
 
+McpSnapshotSource = Literal[
+    'run_simulation',
+    'run_contaminant_simulation',
+    'analyze_valve_closure',
+    'analyze_flushing',
+    'analyze_pressure_regulation',
+    'optimize_sensor_placement',
+    'run_burst_detection',
+    'run_burst_location',
+    'analyze_valve_isolation',
+    'run_leakage_identification',
+    'get_element_properties',
+    'list_elements',
+    'get_network_options',
+    'get_network_schema',
+    'list_scada_devices',
+    'get_scada_device',
+    'query_scada_readings',
+    'query_model_baseline_series',
+    'get_model_baseline_at_time',
+    'query_model_baseline_field',
+    'query_analysis_series',
+    'query_analysis_values',
+    'list_analysis_runs',
+    'get_analysis_run',
+    'list_analysis_results',
+    'list_sensor_placement_runs',
+    'get_sensor_placement_run',
+    'query_element_history',
+    'get_element_gis_properties',
+    'get_source_gis_properties',
+    'get_workbench_runtime',
+    'get_task_context',
+    'query_peripheral_data',
+    'get_task_evidence',
+]
+TaskSnapshotSource = TaskDataSource | McpSnapshotSource
+
 class TaskDataQuery(StrictModel):
     source: TaskDataSource
     device_ids: list[NonEmptyStr] = Field(default_factory=list, max_length=20)
@@ -36,7 +75,7 @@ class TaskDataQuery(StrictModel):
 
 
 class TaskDataSnapshot(StrictModel):
-    source: TaskDataSource
+    source: TaskSnapshotSource
     source_ref: NonEmptyStr
     queried_at: WorkbenchDateTime
     origin: Literal["system_data", "synthetic"]