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/vocero_api/models/requests.py

@@ -29,13 +29,6 @@ class ReasoningRequest(BaseModel):
     episode_id: str | None = None
 
 
-class ApipilotExecuteRequest(BaseModel):
-    """Body for the ApiPilot execute proxy endpoint. Mirrors §2.2 request shape."""
-
-    name: str
-    arguments: dict = {}
-
-
 class QueueEndPayload(BaseModel):
     """A view of a decoded beacon object, preserving the legacy loose value.
 

vocero-api/vocero_api/models/responses.py

@@ -27,7 +27,6 @@ class ConfigResponse(OpenResponse):
     debugPrompt: bool
     startSessionMode: str
     theme: str
-    apipilot: bool
 
 
 class SearchResult(OpenResponse):
@@ -62,42 +61,8 @@ class ReportsResponse(OpenResponse):
     note: str | None = None
 
 
-class ToolInvocation(OpenResponse):
-    name: str
-    success: bool
-    result_length: int
-
-
 class ReasoningResponse(OpenResponse):
     answer: str
-    usage_pass2: Any = None
-    apipilot_invoked: ToolInvocation | None = None
-
-
-class ToolDefinition(OpenResponse):
-    name: str
-    description: str
-    parameters: dict[str, Any]
-    requires_auth: bool
-
-
-class ToolCatalog(OpenResponse):
-    count: int
-    include_unauthorized: bool
-    tools: list[ToolDefinition]
-
-
-class ToolCatalogResponse(OpenResponse):
-    success: bool
-    data: ToolCatalog | None
-    error: Any
-
-
-class ToolExecutionResponse(OpenResponse):
-    success: bool
-    # The upstream may omit these fields or return any JSON value for them.
-    data: Any = None
-    error: Any = None
 
 
 class AllocationResponse(OpenResponse):