fix(web): stale-closure + focus trap + 去边界强转 + a11y/性能打磨 + 类型化客户端

P1-6 useStyleLearn/useKimiOauth 修 stale-closure 依赖。
P1-7 CommandPalette/Drawer 加 focus trap（新 lib/a11y/focusTrap）。
P1-8 SSE 解析与 server.ts 去 as 强转改类型守卫/运行时校验。
P2 删冗余强转、开 noUncheckedIndexedAccess、Toast 清理+稳定 key、列表 key 稳定化、
  rel=noopener、useMemo 大文本、ConflictCard role=group、useInjection 加锁、
  client.test 真断言。
codegen 重生成 schema.d.ts + 消费 DimensionEntry/ReviewConflictView 强类型。

apps/web/lib/style/useRefine.ts

@@ -4,7 +4,6 @@ import { useCallback, useState } from "react";
 
 import { api } from "@/lib/api/client";
 import { useToast } from "@/components/Toast";
-import type { RefineResponse } from "@/lib/api/types";
 import { buildRefineRequest } from "./style";
 
 export type RefineStatus = "idle" | "refining" | "done" | "error";
@@ -65,10 +64,9 @@ export function useRefine(): UseRefine {
           );
           return null;
         }
-        const next = data as RefineResponse;
         const outcome: RefineResult = {
-          original: next.original,
-          refined: next.refined,
+          original: data.original,
+          refined: data.refined,
         };
         setResult(outcome);
         setStatus("done");