收口模板确认面板行内字段标签

新增 PlatformFieldLabel inlineForm 变体承接行内表单标题
模板确认弹层“关卡数”标题改为复用 PlatformFieldLabel
补充组件测试、收口计划文档和 Hermes 决策记录

src/components/common/PlatformFieldLabel.tsx

@@ -4,6 +4,7 @@ type PlatformFieldLabelVariant =
   | 'field'
   | 'section'
   | 'form'
+  | 'inlineForm'
   | 'pill'
   | 'accentPill';
 
@@ -18,6 +19,8 @@ const PLATFORM_FIELD_LABEL_CLASS: Record<PlatformFieldLabelVariant, string> = {
   section:
     'text-xs font-bold tracking-[0.18em] text-[var(--platform-text-soft)]',
   form: 'mb-2 block text-sm font-black text-[var(--platform-text-strong)]',
+  inlineForm:
+    'inline-flex items-center text-sm font-bold text-[var(--platform-text-base)]',
   pill: 'mb-2 inline-flex rounded-full px-2 py-0.5 text-sm font-black text-[var(--platform-text-strong)]',
   accentPill:
     'mb-2 inline-flex rounded-full border border-rose-200/70 bg-rose-50/88 px-2.5 py-1 text-sm font-black text-rose-700 shadow-sm',