User-approved 2026-10-22 change to the SW Viewer layer popup.
- New public export SWLayerVisibilityIcon({ on }) + SWLayerVisibilityIconProps:
the SW Header layer bulb art reused as is (header design and behavior unchanged).
- Layer rows: eye (Eye / EyeOff) icon replaced by the bulb, 24 x 24 button kept.
- All layers: the 전체 켜기 / 전체 끄기 buttons replaced by one SWViewerField +
SWViewerSwitch on top. ON only when every layer is shown; a partial state reads
OFF and a click shows all. Derived from the hidden-layer state, so it stays synced.
- AI docs (VIEWER.md 4.1, catalog, design rules, composition, AI_GUIDE sync) and
example H follow the new rule, replacing the 2026-10-21 eye-icon rule.
- viewer.browser.mjs: layer popup checks moved to the bulb / switch behavior.
shkim4
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