feat(web): 生成器 ThinkingIndicator/空结果态/数量校验 + 文风页 PageHeader + Codex 分段控件 + RefineView role 修正

apps/web/components/style/RefineView.tsx

@@ -41,7 +41,7 @@ export function RefineView({
   return (
     <div
       className="rounded border border-cinnabar bg-panel p-3 text-xs"
-      role="dialog"
+      role="region"
       aria-label="回炉对比"
     >
       <div className="mb-2 flex items-center justify-between">
@@ -61,14 +61,22 @@ export function RefineView({
         <Badge variant="warning">
           该段在终稿中为空，请先在终稿中保留该段正文。
         </Badge>
-      ) : refiner.status === "refining" ? (
-        <p className="text-info">
-          <ThinkingIndicator label="回炉中" />
-        </p>
-      ) : refiner.status === "error" ? (
-        <p className="text-conflict">回炉失败，请稍后重试。</p>
-      ) : refiner.result ? (
-        <div className="space-y-2">
+      ) : (
+        <div role="status" aria-live="polite">
+          {refiner.status === "refining" ? (
+            <p className="text-info">
+              <ThinkingIndicator label="回炉中" />
+            </p>
+          ) : refiner.status === "error" ? (
+            <p className="text-conflict">回炉失败，请稍后重试。</p>
+          ) : refiner.result ? (
+            <span className="sr-only">回炉完成，可对比后采纳。</span>
+          ) : null}
+        </div>
+      )}
+
+      {segment.trim().length > 0 && refiner.result ? (
+        <div className="mt-2 space-y-2">
           <div>
             <p className="mb-1 text-ink-soft">原段</p>
             <p className="whitespace-pre-wrap rounded border border-line bg-bg p-2 text-ink-soft line-through">