New row in the optional-env-vars table documenting LANGGRAPH_RECURSION_LIMIT.

Two new symptom entries: "quota_exhausted incident" + "recursion_limit incident". Includes a Python snippet for querying the persistent incident log.

HANDOVER: up-to-date cost structure

remove local artifact

HANDOVER docs

add rendered diagrams

remove local artifact

update docs

add Environment Setup

add docs