[YukohZZ]

Summary

• Add a persistent four-slot board macro library with named macros and up to 512 steps per slot.
• Add a Web Serial macro editor with keyboard recording, complete controller keyboard mapping, both analog sticks, JSON import/export, multi-select copy/delete, and drag reordering.
• Add range testing and segmented board-resident execution plans for independently repeated step ranges.
• Report active macro metadata and live progress from the board, and document the current protocol.

Verification

• node --test tests/web/*.test.mjs tests/data/*.test.mjs (29 passing)