fix(chat): fold natal reports and drop homepage topic cards

Homepage no longer waits on /api/onboarding for six starter questions.
Natal answers show the spoken layer first; the Level 2 skeleton sits in a
collapsed 完整分析 block. Wide tables scroll sideways on a phone. Form
inputs are 16px so iOS does not zoom on focus.

frontend/tests/skill-binding.test.ts

@@ -139,10 +139,6 @@ test("only chart-answering agents bind the method", () => {
   );
   const general = mastra.slice(
     mastra.indexOf("const generalJyotishInstructions"),
-    mastra.indexOf("const onboardingInstructions"),
-  );
-  const onboarding = mastra.slice(
-    mastra.indexOf("const onboardingInstructions"),
     mastra.indexOf("const dailyStarlanguageInstructions"),
   );
   const daily = mastra.slice(
@@ -152,7 +148,10 @@ test("only chart-answering agents bind the method", () => {
 
   assert.match(chart, /\.\.\.jyotishSkillBinding\(\)/);
   assert.match(chart, /\$\{jyotishSkillMethodBlock\}/);
-  for (const [name, source] of [["general", general], ["onboarding", onboarding], ["daily", daily]] as const) {
+  // 原值: 另切 onboardingInstructions，断言它也不绑方法。
+  // 新值: onboarding agent 已删除；general 与 daily 仍不绑。
+  // 原因: 建议问题生成接口下线。
+  for (const [name, source] of [["general", general], ["daily", daily]] as const) {
     assert.doesNotMatch(source, /jyotishSkillBinding|jyotishSkillMethodBlock/, name);
   }
 });