Scroll Engineering Audit

Credit: This checklist is derived from @shadcn's "What Makes a Great Streaming Chat Experience" thread (Jun 2026). The north star principle: Never move the reader against their intent.

Audit a streaming chat UI against 15 scroll engineering principles. Works by reading code or observing live behavior. Output: a pass/fail table + a ranked fix list.

Step 0 — Scope

Establish what you're auditing: