PlayForm/@playform/hook-dsh-normalize-fullwidth

The fullwidth hook: a DeepSeek Harness plugin that hooks the llm/stream waterfall — the interceptable wrapper around EVERY streaming model call — and normalizes the full-width family (the entire FULLWIDTH FORMS range U+FF01–U+FF5E) in model output streams, the family's fullwidth flavor — the MAP flavor: the core's Fullwidth char→char map replaces each full-width code point with its ASCII half-width counterpart (U+FF21 Ａ → U+0041 A, U+FF10 １ → U+0030 1, U+FF01 ！ → U+0021 !, …) in text/reasoning deltas and assembled block-end blocks while tool-call deltas pass through untouched.