v0.9.9 - ProxyManager Refactor

BufferWrap v0.9.9 – Area-Based Changelog

Area	Improvements
Proxy System	Introduced ProxyManager to manage all proxy creation, reuse, movement, and indexing. Eliminates stale proxies after structural changes.
Memory Safety	Proxy lifecycle centralized — proxies now update consistently on .move(), .swap(), .insert(), .copyInto(), and .from().
BufferWrap API	Removed proxyCache, removed remapProxy(), and added internal ProxyAccessStrategy<T> for clean separation of logic.
Developer UX	No more stale proxy bugs after structural changes. Safer, more ergonomic. .at() remains lazy but consistent.
Testing	Full unit test suite added for ProxyManager. Existing BufferWrap tests updated and all passing.
Internal Refactors	New generateOffsetsAndStride() function to compute layout + alignment. Cleans up constructor logic.
Foundation for v1.0	Prepares BufferWrap for pluggable strategies: ArrayBuffer, GPUMemory, AudioBuffer, SharedMemory, etc.