update: v4.0.9

Fix session runtime event context and tool scoping

feat: emit triggerflow definitions for devtools graph

update: v4.0.8.7

update: add agently-devtools document and test

add chunk runtime input and output payloads

attach chunk origin metadata to workflow stream and result events

expose trigger flow operator signal metadata on chunk runs

add chunk execution runtime scope for flow operators

fix parsed model completion payload fields

propagate runtime context through flow and request execution

refine runtime scopes with agent turns and actions

add model request runtime observation lifecycle

add agently api key configuration helpers

add runtime refactor docs and regression coverage