Refine the gaslighting capture: the tamper act alters or suppresses a world-facing artifact while the canonical event, original payload, and acquired evidence remain immutable simulation truth, with exact persisted original/altered custody. A negative self_trust delta settles only when the exact target encounters the contradictory artifact through its ordinary read boundary without sufficient corroboration — tamper or plot completion alone moves no psyche state. Low self-trust changes what a person does with knowledge, never what happened. Defense: Docs-only amendment to plots.md criterion 12 and social.md pending criterion 9, aligning the adopted extension with the corpus's exact-custody and carrier/read-boundary discipline before any crates/ implementation.