v0.1.9

Changed

• READMEs (English and 中文): added a concise "Why you need this" opening section — the transcription cost and 46–51% patch-failure rate of str_replace, the 31%/43% edit-token savings, verified landing, and the leaner-context benefit (the model's attention stays on the code, not on re-transcribing it) — placed before Quick Start so the demo stays immediately visible. Fixed the stale static version badge.