🎨 Palette: 빈 디렉토리 시각적/시맨틱 구분 추가 - #260

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Closing this stale child-emptiness preflight branch. Although it injects the stream boundary for a failure test, the production design still enumerates each child directory a second time solely to decorate the parent listing, then silently treats filesystem errors as “not empty.” That adds hot-path I/O and a race-prone hint whose truth can change immediately after the probe. Keep the renderer snapshot-based; the current directory can communicate its own empty state cheaply in #385.

Closing this stale child-emptiness preflight branch. Although it injects the stream boundary for a failure test, the production design still enumerates each child directory a second time solely to decorate the parent listing, then silently treats filesystem errors as “not empty.” That adds hot-path I/O and a race-prone hint whose truth can change immediately after the probe. Keep the renderer snapshot-based; the current directory can communicate its own empty state cheaply in #385.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.