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---
name: ztx9-frame-differencing
description: Multi-frame trajectory diagnostics for Codex Perfect_AI production websites. Additive to all previous skills.
---
# Multi-frame trajectory diagnostics
## Task-specific procedure
Capture p=0,.1,.25,.5,.75,1 and reverse; compare center, box, opacity, trajectory speed and pixel masks; distinguish easing mismatch from layout jump.
## Integration
Read `.agents/ztx9-frame-space-device-lab/references/01-animation-frame-inspector.md` and execute its validation contract. Start by establishing baseline and technology versions; avoid forcing this Skill on unrelated routes or states. After integration, run browser/device tests applicable to this feature, compare evidence and provide the exact files changed.
## Completion criteria
Record screenshot/report or measurements, testing environment, pass/fail and unresolved issues. Preserve old skills and functions. The mere existence of this SKILL.md is not evidence of implementation.
