fix(rectification): enforce trusted result identity and preserve receipt provenance

Unify minute and block cache identity, keep unverifiable historical results read-only across server tools and write entrypoints, and aggregate completed receipt sources chronologically through a compatible function migration.

Co-Authored-By: Claude Code <noreply@anthropic.com>

frontend/tests/rectification-agentic-entry.test.ts

@@ -735,14 +735,16 @@ test("time-selection cards use server adoption state and stay mutually exclusive
   assert.doesNotMatch(chat, /send\("message", choiceCardUserMessage/);
   assert.doesNotMatch(chat, /send\("message", choiceCard\?\.stop_message/);
   assert.doesNotMatch(chat, /choiceCardUserMessage/);
-  assert.match(caseProjection, /choice_card: choiceCardFromCaseDossier/);
+  // 原值: 直接卡片投影；新值: 只读时 null；原因: BUG-984 不能选择旧结果。
+  assert.match(caseProjection, /choice_card: identity\.read_only \? null : choiceCardFromCaseDossier/);
   // 原值: 容器 map 用 `choiceCard && choiceCard.focus_id === question.focus_id` 和 `disabled={!liveQuestion}`。
   // 新值: 行组件用 liveChoiceCard / liveQuestion；容器的 live 卡判定仍比对 latestLiveQuestion。
   // 原因: BUG-725。
   assert.match(messageEntry, /liveChoiceCard\s+&& liveChoiceCard\.focus_id === question\.focus_id/);
   assert.match(messageEntry, /disabled=\{!liveQuestion\}/);
   assert.match(chat, /choiceCard\s+&& choiceCard\.focus_id === latestLiveQuestion\.focus_id/);
-  assert.match(caseProjection, /current_question: projectCurrentQuestion/);
+  // 原值: 无条件问题；新值: 只读不提供可写问题；原因: BUG-984。
+  assert.match(caseProjection, /current_question: identity\.read_only \? null : projectCurrentQuestion/);
   assert.match(caseProjection, /overlayPublicDecision/);
   assert.match(caseProjection, /const fields = publicDecisionFields\(decision\)/);
   // 原值: 断言读 cases/[caseId]/route.ts 的 interview 投影