Cross‑Channel Precedence: Clipboard → Drag‑and‑Drop → Screen Capture

Validate that deny‑by‑default and highest‑precedence rules apply consistently across clipboard, drag‑and‑drop, and screen capture/share, with coherent audit artifacts and optional watermark deterrence.

Objectives

• Apply consistent deny outcomes across channels for the same content/context.
• Preserve classification context and integrity chain across attempts.

Preconditions

• Data Motion controls enabled with default deny for clipboard, dragDrop, and screenCapture.
• Optional: watermark template configured for screen capture deterrence.

Suite

ID	Canonical IDs	Flow	Procedure	Expected Outcome
INTEG-DM-PRECEDENCE-01	DM-CLIP-01, DM-DRAG-02, DM-SCREEN-04, DM-SCREEN-07	Cross‑Channel Precedence	1) Attempt to exfiltrate the same classified content via Clipboard. 2) Repeat via Drag‑and‑Drop. 3) Attempt Screen Capture/Share.	All attempts are denied under default‑deny; audit shows consistent action: "deny", rule.id, classification.normalized[]; if watermarking is enabled, watermarkTemplateUsed is present for screen channel.

Evidence Requirements

• dataMotion events per channel with: category, channel, action, rule.id, classification.normalized[], integrity.hash.
• For screen: watermarkTemplateUsed when deterrence is active.