You'll notice
Useful2 Signal3
Only a few named fields of tool input get recorded in history now, and NUL-containing strings are dropped.
What's wrong with this entry?
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What
History summaries and edited-file tracking no longer read raw tool input. A new helper picks out only file_path, path, pattern, glob, command, query and content, and drops any string containing a NUL byte.
Evidence
return typeof e === "string" && !e.includes("\x00");
Strings lifted out of the shipped bundle, so the claim above can be checked against them.