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;