DESIGN.md gains the streaming-states table, the thinking-collapse and
label-swap motion rows, the 17px body correction and the single live
marker rule; task 3 is registered in BLOCKED.md until the home split
batch three lands; PROGRESS lists every touched assertion with its
former value.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JUei7K13cYxLHE3Axe4A45
