構
Survey
resting
Band 1 only.
Structure over identity: the resting register, definitions bold, everything else near the spine.
流
Focus
reading
+ Band 2.
Identity tints inside the focused block; out-of-scope bindings bold and traced file-wide.
異
Edit
writing
+ Band 3.
Risk register on the focused scope only: escaping writes dashed, await cyan, diagnostics inline.
each band engages only as you engage — and withdraws on the way back out