GeoLeaf Core API - v3.0.0
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    SYNC_PENDING: unknown = ...

    Pending-sync test expression. The live syncStatus feature-state (set via setFeatureState, no source rebuild) takes precedence over the baked _syncStatus property. setData clears feature-state, so the baked property is the fallback for the initial/rebuilt render; with neither flag set, coalesce yields the (absent) property and the test is false, so a plain feature renders unchanged.