refactor(home): drop the redundant hero note and move the birth-time boundary to the topics

The hero carried three lines saying the same thing: a salutation, a
question, and an Agent greeting that repeated both. Removing the third
line would also have removed the only place where accounts without a
usable birth minute are told that unsupported claims will be disclosed,
so that sentence moves to the topic section subheading, where the reader
is about to pick a question.

The starter loading copy claimed three starting points while the page
renders every domain in the registry, only three of which the Agent
writes.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/app/globals.css

@@ -1057,15 +1057,6 @@ input:not([type="radio"]):not([type="checkbox"]):not([class^="ant-"]):not([class
   text-wrap: balance;
 }
 
-.starter-hero-note {
-  max-width: 590px;
-  margin: var(--space-4) 0 0;
-  color: var(--color-ink-secondary);
-  font-size: var(--type-body-sm);
-  line-height: 1.65;
-  text-wrap: pretty;
-}
-
 .product-entrypoints {
   display: grid;
   grid-template-columns: repeat(2, minmax(0, 1fr));
@@ -1431,10 +1422,6 @@ input:not([type="radio"]):not([type="checkbox"]):not([class^="ant-"]):not([class
     padding: var(--space-6) var(--space-5);
   }
 
-  .starter-hero-note {
-    margin-top: var(--space-4);
-  }
-
   .product-entrypoint-footer {
     display: grid;
     gap: var(--space-4);

frontend/src/app/page.tsx

@@ -3384,7 +3384,7 @@ export default function Home() {
 
               {profileComplete && presetMessageFinished && !rectificationSurfaceOpen && (onboardingPending ? (
                 <div className="starter-loading" role="status">
-                  <AppLoadingIndicator title="正在准备问题" detail="根据你的资料整理三个起点。" />
+                  <AppLoadingIndicator title="正在准备问题" detail="根据你的资料整理今天的起点。" />
                 </div>
               ) : (
                 <div className="starter-list starter-workbench" aria-label="Jyotisha 推荐的初始问题">
@@ -3392,10 +3392,6 @@ export default function Home() {
                     <div className="starter-hero-copy">
                       <p className="starter-greeting">{starterGreeting.salutation}</p>
                       <h1 id="starter-heading">{starterGreeting.question}</h1>
-                      <p className="starter-hero-note">{onboarding?.greeting
-                        || (personalChartAvailable
-                          ? "从此刻最在意的事开始，我会结合你的星盘证据，帮你把问题拆得更清楚。"
-                          : "从你现在最关心的事开始；出生时间不足以支持的部分，我会明确说明，不会补造具体分钟。")}</p>
                     </div>
                   </section>
 
@@ -3447,7 +3443,9 @@ export default function Home() {
                   <section className="starter-themes" aria-labelledby="starter-themes-heading">
                     <div className="starter-section-heading">
                       <h2 id="starter-themes-heading">从一个主题开始</h2>
-                      <p>选择一个你现在想解决的问题。</p>
+                      <p>{personalChartAvailable
+                        ? "选择一个你现在想解决的问题。"
+                        : "选择一个你现在想解决的问题；出生时间不足以支持的部分，我会明确说明，不会补造具体分钟。"}</p>
                     </div>
                     <div className="starter-theme-accordion">
                       {starterSuggestions.map((item) => {