以设计系统为核心推进无障碍改造

𝟮. 𝗱𝗲𝘀𝗶𝗴𝗻 𝘀𝘆𝘀𝘁𝗲𝗺, 𝘁𝗵𝗲𝗻 𝗮𝗰𝗰𝗲𝘀𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆 𝗶𝗻 𝘁𝗵𝗲 𝗹𝗶𝗯𝗿𝗮𝗿𝘆 task: pull the scattered UI components, style tokens and repeated interactions into one component library. hand-rolled one-offs get replaced, all new UI goes through the library, no bypassing. this is a refactor, so start in a worktree. then: fix accessibility at the library layer. contrast, font scaling, keyboard (Tab / Enter / Space / Esc), focus states, and the semantics of images, icon buttons, forms and status. verify: start the app locally from the current commit and walk the core paths at desktop, tablet and phone. overlap, overflow, truncation, horizontal scroll, fix them one by one. finish: record what changed and what risk is left, then write a review skill you run before touching UI next time. done = low-vision, keyboard-only and different-device users can complete the core actions. run this through the goal wrapper. fix it in the library and 𝗲𝘃𝗲𝗿𝘆 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 𝘂𝘀𝗶𝗻𝗴 𝗶𝘁 𝗶𝗻𝗵𝗲𝗿𝗶𝘁𝘀. page-level still needs its own pass: heading order, where focus lands after routing, live regions, image alt.