May 2026 performance-focused summary: Delivered a major architectural and memory-management upgrade for NebulaStream with a Nautilus upgrade to v0.1, introducing a per-function alloca table and move semantics for value types. Lowering passes now materialize the alloca table in the function prologue, eliminating per-allocation hoisting and improving performance and correctness. Fixed SSA-phase issues (stale ReturnOp index) via tombstones and unique AllocaIndex, reducing risk of memory corruption. Added alignment-aware allocation/deallocation for over-aligned ValueTypes and improved destructor logic. Expanded tracing API and internal plumbing to support the new allocation model with zero consumer impact. Result: stronger memory safety, lower allocation overhead, and a solid foundation for future optimizations.