fix(chat): keep rectification sessions findable and keep the delivery card

Rectification answers now advance chat_sessions.updated_at (BUG-704).
A ?c= id missing from the loaded page is fetched before anyone may call
it deleted (BUG-705). The range card no longer has a post-card tie-break
button; live questions leave the card visible with adopt locked
(BUG-706/708). Spoken copy bans 相对支持度 (BUG-709).

Task docs assigned 700-704; qizheng already took 700-703.

frontend/src/lib/rectification-surface-state.ts

@@ -382,9 +382,8 @@ export function interviewChoiceCardUnavailable(input: Readonly<{
   // A choice question without a GET card is a dead tap target, not a
   // collect-wait. The repair-exit path must take over.
   if (input.questionKind === "choice" && !input.hasChoiceCard) return true;
-  // Spoken targeted existence is the same dead end: the stem is a card
-  // question stored as collect_spoken. Year-stage targeted questions stay spoken.
   const questionId = (input.questionId ?? "").replace(/:(?:next|next2|next3)$/, "");
+  if (!input.hasChoiceCard && /^varga\./.test(questionId)) return true;
   if (
     input.questionKind === "collect_spoken"
     && !input.hasChoiceCard