diff --git a/AGENTS.md b/AGENTS.md
index 2086010b..224ee21c 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -12,6 +12,22 @@
 - Do not commit repo changes whose only purpose is to make local Windows execution work.
 - If a failure appears only in the local Windows shell, do not treat it as a code regression until it reproduces in Docker/Linux.
 
+## Session Start
+
+- At the start of a session, sync with `origin/master` before doing substantive work.
+- Preferred command:
+  - `git pull --rebase origin master`
+- Only do this automatically when the worktree is clean.
+- If there are local changes already present, do not pull/rebase blindly; inspect first and avoid overwriting user work.
+
+## Commit Scope
+
+- Keep commits small and reviewable by default.
+- Prefer one commit per individual recipe change when that is practical.
+- Otherwise group a commit around one coherent class of change, not multiple unrelated fixes or refactors.
+- Split work before committing when a reviewer would benefit from evaluating the pieces independently.
+- Only keep changes together when separating them would make the behavior harder to understand, test, or revert.
+
 ## Current Project Preference
 
 - For this fork, validate payment-related changes through the Docker-based workflow before judging safety to commit.