What
Claude Code now calls a setter named setAccountSetMode each time the permission mode changes. The permission mode is the setting that decides how freely Claude Code may act before asking you. It also calls the setter each time a saved mode is restored.
Why
In practice, Claude Code now keeps an account-level record of which permission mode is in use, updated on every switch and every restore.
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The writer flagged doubt
The finding does not say what the recorded account mode is read by or what it changes for the reader.