BloomKeyedIterableElements<E>
extension type
A dedicated proxy wrapper for Bloom<Iterable<E>> to perform keyed element-wise transformations safely and lazily.
System Architectural Flow (Keyed Dynamic Divergence)
[Source Bloom<Iterable<E>>]
│ (Push-Dirty on list mutation)
▼
[Keyed Divergence Engine]
├─► Matches existing Key ──► Reuses existing mapped instance (preserves state)
├─► New Key Detected ──► Invokes convert() & caches mapped instance
└─► Removed Key ──► Releases obsolete cached instance
│
▼
[Output Bloom<List<T>>] (Composite list of cached and newly mapped instances)