Changes to List gateway and local sessions

deleted the query request parameter agent

deleted the query request parameter limit

removed the optional property sessions/items/status from the response with the 200 status

removed the optional property sessions/items/updatedAt from the response with the 200 status

added the optional property sessions/items/active to the response with the 200 status

added the optional property sessions/items/age to the response with the 200 status

added the optional property sessions/items/assistantMessages to the response with the 200 status

added the optional property sessions/items/channel to the response with the 200 status

added the optional property sessions/items/estimatedCost to the response with the 200 status

added the optional property sessions/items/flags to the response with the 200 status

added the optional property sessions/items/id to the response with the 200 status

added the optional property sessions/items/kind to the response with the 200 status

added the optional property sessions/items/lastActivity to the response with the 200 status

added the optional property sessions/items/lastUserPrompt to the response with the 200 status

added the optional property sessions/items/source to the response with the 200 status

added the optional property sessions/items/startTime to the response with the 200 status

added the optional property sessions/items/tokens to the response with the 200 status

added the optional property sessions/items/toolUses to the response with the 200 status

added the optional property sessions/items/userMessages to the response with the 200 status

added the optional property sessions/items/workingDir to the response with the 200 status

endpoint added