context.md §8: every assistant message of the current turn (after the last message that started a turn — a step-boundary delivery does not) carries its reasoning back, as reasoning_content in OpenAI chat and as thinking blocks in Anthropic; earlier turns carry none, which the common templates render identically. §11: an agent session's prompt names no absolute machine path: the environment block names the project and says paths are relative to its root (loop.json context.env), files outside the project under home as ~/…; relative paths resolve against the project root, absolute ones still accepted. agents-missing.md and init.md no longer name the root. New conformance areas: reasoning, paths. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>