chore(vocero): remove the legacy ApiPilot integration (#3)

Vocero now retrieves AquaPortal content through authenticated MCP. This removes the obsolete ApiPilot integration from the API and browser while preserving the separately deployed speech pipeline.

Release notes:

- Removed ApiPilot endpoints, configuration, credential overrides, and HTTP/realtime tool execution.
- Removed browser ApiPilot catalog loading and prompt generation while retaining authenticated MCP discovery.
- Updated regression coverage and operating documentation for the retired routes and settings.

Reviewed-on: AquaPortal/s2s#3

vocero-api/tests/test_models.py

@@ -5,14 +5,13 @@ from fastapi.responses import JSONResponse
 from pydantic import ValidationError
 
 from vocero_api.api.responses import validated_json_response
-from vocero_api.models.requests import ApipilotExecuteRequest, QueueEndPayload, SearchRequest
+from vocero_api.models.requests import QueueEndPayload, SearchRequest
 from vocero_api.models.responses import (
     AllocationResponse,
     QueueCancellationResponse,
     ReasoningResponse,
     ReportsResponse,
     SearchResponse,
-    ToolExecutionResponse,
     UserProfileResponse,
 )
 
@@ -22,9 +21,7 @@ from vocero_api.models.responses import (
     [
         (AllocationResponse, {}),
         (AllocationResponse, {"state": [1, None], "connectUrl": "wss://host", "future": {"x": 1.0}}),
-        (ToolExecutionResponse, {"success": True, "unknown": {"nested": [None, 1.0, False]}}),
-        (ToolExecutionResponse, {"success": False, "data": 42, "error": "loose error", "future": []}),
-        (ReasoningResponse, {"answer": "á", "usage_pass2": [1, None], "future": True}),
+        (ReasoningResponse, {"answer": "á", "future": [1, None, True]}),
         (SearchResponse, {"query": "q", "answer": {"x": 2}, "results": [{"title": [], "snippet": 7, "url": None}]}),
         (
             ReportsResponse,
@@ -47,10 +44,8 @@ def test_owned_response_fields_are_actually_validated(payload):
         validated_json_response(payload, QueueCancellationResponse)
 
 
-def test_request_models_keep_legacy_extra_field_and_argument_behavior():
+def test_request_models_keep_legacy_extra_field_and_beacon_behavior():
     assert SearchRequest.model_validate({"query": "q", "future": True}).model_dump() == {"query": "q", "key": None}
-    arguments = {"arbitrary": {"nested": [1, None]}, "unknown": True}
-    assert ApipilotExecuteRequest.model_validate({"name": "tool", "arguments": arguments}).arguments == arguments
     for value in [None, "id", 42, False, [], {}, {"future": True}]:
         assert QueueEndPayload.model_validate({"queueId": value, "future": 1}).queueId == value
     assert QueueEndPayload.model_validate({}).queueId == ""