fix(rectification): invite-first collect, holdout at 4 events, Skill 10.0.23 (BUG-646–648)

Stop domain-wheel collecting and age-band years in prompts. Ask until the training gate, then discriminate until convergence, then deliver a range plus a concrete follow-up. Reserve holdout only with four dated events.

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

frontend/DESIGN.md

@@ -230,6 +230,7 @@ The birth-time rectification session is the consultation transcript plus a house
 | `question-gap`, persisted question | snapshot already has the next prompt, including a completed turn that claimed to record evidence but left the same focus unanswered; a host question row (`data-testid="persisted-question"`) | enabled, placeholder “请回答上面的问题…” |
 | `question-gap`, retries left | one timeline live row “正在准备下一个问题…”, refetching on a 2s timer up to two retries | enabled |
 | `question-gap`, retries spent | “没有拿到下一个问题。” and a 44px “接着问” | enabled |
+| `question-gap`, collect waiting | no “没有拿到下一个问题”; the last assistant line already has the precise gap | enabled, placeholder “再说一件带年月的事” |
 | `verified_idle` | one closing line `postAdoptVerifyDone` under the still-visible range card (same assistant column); no spinner, no reload | enabled |
 | `choice-pending` | the answered card (`data-selected` fill, a top row “正在记录…”) and the same live row from “正在记录本次选择…” through the follow-up turn | enabled (typing queues), stop visible |
 | `candidates` | one range-delivery card of up to three compare columns (highest posterior first; “更像这个” adopts) under the offering message; a closed “查看验证报告” fold | enabled |