1.15.13
feat: adopt directory-based docs versioning with Edge channel (#6202)
Fix Anthropic cache token usage underreporting (#6844)
[COR-636] Remove migrated AMP documentation (#6730)
fix(tools): sandbox FileWriterTool writes and fix file tool rough edges (#6692)
[docs-freeze] docs: snapshot and changelog for v1.15.13 (#6866)