* perf(ecstore): share legacy SIMD workspaces Reuse legacy Reed-Solomon encoder and decoder workspaces across Erasure instances with the same shard layout while keeping active codecs request-exclusive. Co-Authored-By: heihutu <[email protected]> * perf(ecstore): reuse GET erasure shells and scratch buffers Co-Authored-By: heihutu <[email protected]> * test(ecstore): satisfy concurrent codec lint Co-Authored-By: heihutu <[email protected]> * perf(ecstore): bound cached legacy workspaces Co-Authored-By: heihutu <[email protected]> * perf(ecstore): cap retained legacy codec memory Co-Authored-By: heihutu <[email protected]> --------- Co-authored-by: heihutu <[email protected]>