[docs] Update glossary - weekly full scan#27302
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Add Ambient Context metric term, Pre-Steps per-job field term, and update Update Pull Request entry with update-branch field. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Glossary Updates - 2026-04-20
Scan Type
Terms Added
Ambient Context: Token footprint of the first LLM invocation in a run, used as a proxy for static context size (system prompt, tools, memory). Introduced in #27137 which added this metric to
gh aw auditandgh aw logsJSON output.Pre-Steps (
jobs.<job-id>.pre-steps): Steps injected at a specific lifecycle position within a custom or built-in job, distinct from the top-levelpre-stepsfield. Introduced in #27138.Terms Updated
update-pull-request:): Added mention of the newupdate-branch: truefield that synchronizes the PR branch with the latest base branch changes. Introduced in #27244.Changes Analyzed
Related Changes
jobs.<job-id>.pre-stepssupport for custom and built-in jobs #27138: Addjobs.<job-id>.pre-stepssupport for custom and built-in jobs