May 2026 monthly summary for bytecodealliance/wasmtime: Delivered AArch64 wide-arithmetic support (add/mul with carry and sub with borrow) with comprehensive disassembly tests and updated assembler integration. The change set extends the AArch64 backend to correctly handle wide operands, including extending the subs_rrr path with a destination register. All changes were formatted and aligned with the codebase (cargo fmt). The work is captured in commit 96a240d4c6dcb5c33946f2536498e59fc760c4fb with the message "winch/aarch64: implement the wide-arithmetic proposal (#13271)" and includes tests for wide-arithmetic, including const and locals disassembly tests. Impact: stronger Wasmtime on ARM64, enabling cryptographic and numeric workloads, improved correctness and reliability, expanded test coverage, and better long-term maintainability.

Month: 2026-03 — Near/docs: Delivered Epoch Duration Documentation Update to reflect changes in epoch duration and block creation timing in NEAR Protocol. The update improves user understanding of network behavior and aligns docs with protocol changes. No other features or bug fixes recorded for near/docs this month.

Monthly summary for 2025-05 focusing on enforcing protocol upgrades by removing non-updating validators in NEAR Core (near/nearcore).

April 2025: Focused on simplifying the core runtime and enabling scalable upgrade orchestration across chains. Delivered key features including per-chain protocol upgrade scheduling (replacing the global PROTOCOL_UPGRADE_SCHEDULE with per-chain get_protocol_upgrade_schedule to support distinct upgrade timelines per chain), and deprecated bandwidth scheduler to reduce complexity and protocol-version dependencies. Also completed maintenance and cleanup tasks: removed unused runtime variable (timeout_receipts), corrected a documentation typo in core/store Columns, and strengthened epoch-manager tests by asserting exact lengths with zip_eq. Impact includes reduced upgrade risk and maintenance overhead, improved test reliability, and a cleaner, more scalable codebase. Technologies/skills demonstrated include Rust-level refactoring, code hygiene, test improvements, and documentation accuracy.