Changes to POST /api/ai/stream-chat

removed the request property options/telemetry/functionId

removed the request property options/telemetry/langfuseTraceName

added the new optional request property options/telemetry/metadata

added the new optional request property options/telemetry/sessionId

added the new optional request property options/telemetry/spanName

added the new optional request property options/telemetry/traceId

added the new optional request property options/telemetry/traceMode

added the new optional request property options/telemetry/traceName

added the new optional request property messages/items/metadata/reasonning

added the new optional request property messages/items/metadata/toolCalls

added the new CLAUDE_OPUS_4_5 enum value to the request property model

endpoint added