fix(rectification): start new case from homepage

frontend/src/app/api/rectification/cases/entry-summary/route.ts

@@ -12,7 +12,7 @@ export const runtime = "nodejs";
 /**
  * GET /api/rectification/cases/entry-summary
  *
- * Server-truth homepage CTA: "开始生时校正" / "继续上次校正" / "再次校正".
+ * Server-truth context for homepage copy; the primary homepage action always creates.
  */
 export async function GET() {
   let supabase;

frontend/src/app/api/rectification/cases/open/route.ts

@@ -28,7 +28,7 @@ function serviceErrorResponse(error: unknown) {
  *
  * Browser sends only { intent, requestId } (+ sessionId for intent=session).
  * The server derives the user from the session, normalizes the profile and
- * decides resume-or-create. Double-click / multi-tab are idempotent.
+ * creates for homepage/new or restores the exact requested session. Retries are idempotent.
  */
 export async function POST(request: Request) {
   let supabase;

frontend/src/app/page.tsx

@@ -3423,8 +3423,8 @@ export default function Home() {
                       <div className="product-entrypoint-copy">
                         <span className="product-entrypoint-kicker">出生资料</span>
                         <h2 id="birth-rectification-title">生时校正</h2>
-                        <p>{rectificationCardAction === "resume"
-                          ? "你有一段未完成的校正记录，可以从上次的位置继续。"
+                        <p>{rectificationEntrySummary?.hasResumableCase
+                          ? "新建一段独立校正；未完成的记录仍可从左侧历史会话继续。"
                           : rectificationCardAction === "restart"
                             ? "上一次校正已经完成，可以基于最新资料再次校正。"
                             : "不确定准确出生时间时，可通过已经发生的人生事件逐步缩小范围。"}</p>

frontend/src/lib/rectification-entry.ts

@@ -20,18 +20,16 @@ export type RectificationEntrySummary = Readonly<{
   }> | null;
 }>;
 
-export type RectificationCardAction = "start" | "resume" | "restart";
+export type RectificationCardAction = "start" | "restart";
 
 export const rectificationEntryLabels: Readonly<Record<RectificationCardAction, string>> = {
-  start: "开始生时校正",
-  resume: "继续上次校正",
+  start: "开始新的生时校正",
   restart: "再次校正",
 };
 
 export function resolveRectificationEntryAction(
   summary: RectificationEntrySummary,
 ): RectificationCardAction {
-  if (summary.hasResumableCase) return "resume";
   if (summary.hasTerminalCaseWithTime) return "restart";
   return "start";
 }