Concise monthly summary for 2026-03 focusing on performance improvements and memory efficiency in Zed project. The primary deliverable this month was a memory footprint optimization achieved by replacing the arrayvec dependency with heapless and tracking length as a u8. This LenT-based optimization reduces per-structure footprint by 7 bytes on 64-bit platforms, contributing to lower memory pressure and improved concurrency in deployment. Impact: Improved memory efficiency enables denser workloads and better resource utilization in production, supporting higher throughput and scalability without requiring additional hardware. Notes: The change is isolated to memory representation of internal containers and leverages the LenT optimization in the heapless crate. PR includes a co-authored commit with Piotr Osiewicz. No major bugs reported or fixed in this period; stability preserved while memory footprint was reduced.