The previous pass over-corrected: presenting both roots as unknowable made the
guidance vaguer without making it truer. Every `dsh` launcher puts authored
presets under `$DSH_HOME/.agent-presets`, so the skill and persona state that
as the answer to "where do my presets live" and reserve the read-back for the
path an agent actually opens or edits, which `copy()` already reports.
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