diff --git a/docs/agent-log.md b/docs/agent-log.md
index de387c2..3a6767e 100644
--- a/docs/agent-log.md
+++ b/docs/agent-log.md
@@ -4,6 +4,13 @@ What agents have done, newest first. Add an entry for every piece of work: the d
 note or request it was for, what changed, the files touched, the tests run, and anything left
 open or not verified. Keep each entry short; the git history has the details.
 
+## 2026-10-27: Save compatibility rule dropped from AGENTS.md (Claude Code)
+
+- Owner: old saves don't matter; only they play, for testing, and can start a new game.
+  `AGENTS.md` still said to keep saves loading (never renumber ids, add migrations), which
+  contradicted the DESIGN decision "No backward compatibility for now". It now matches. The t65
+  subtask no longer asks for saves to load. `AGENTS.md` is local (gitignored). No code changed.
+
 ## 2026-10-27: t65 Rust conversion added to Todo (Claude Code)
 
 - Owner request: a task to convert the game to Rust for performance, after the base game is more