feat: 任务书 08，jev 模块与账本记 Jev 判断

src/jev 3 个文件 515 行：判重、查冻结条款、查代码改动三个函数，九问问法和阈值照参考项目，只改说法和字段名，阈值注明未在新项目材料上校准，等真实数据。
新增 npm run test:jev（真实 Jev 三处各问一次）。vocab 加 JevJudgment。
ledger 表结构版本 3：callEnded 四种结局对上 agents，墙钟时间用 Measured（恢复时补写出错、原因"进程中断"、测不到）；退回、提交记录都带 jev。
config 加必填的 models.jev。

用户原话："这次就给提交记录加一个和退回记录同样的 Jev 判断字段"；"墙钟时间改用 Measured，恢复时写出错加测不到（原因'进程中断'）"。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/config-check.test.ts

@@ -91,6 +91,21 @@ test("类型或取值不对报错，带字段路径", () => {
   }
 });
 
+test("Jev 模型必填：少了、写 null、写空白都报错，不补 jev-latest", () => {
+  const missing = fullConfig() as unknown as Obj;
+  delete (missing.models as Obj).jev;
+  assert.match(errorOf(missing), /^\/models\/jev：缺少这一项/m);
+  const nulled = fullConfig() as unknown as Obj;
+  (nulled.models as Obj).jev = null;
+  assert.match(errorOf(nulled), /^\/models\/jev：应为字符串$/m);
+  const blank = fullConfig() as unknown as Obj;
+  (blank.models as Obj).jev = " ";
+  assert.match(errorOf(blank), /^\/models\/jev：不能为空，也不能只有空白$/m);
+  const naive = naiveConfig() as unknown as Obj;
+  delete (naive.models as Obj).jev;
+  assert.match(errorOf(naive), /^\/models\/jev：缺少这一项/m);
+});
+
 test("一次列出多处错误，超过 typebox 默认的 8 条、错在 Union 分支里的也都列出", () => {
   const config = fullConfig() as unknown as Obj;
   config.runs = -1;
@@ -196,6 +211,7 @@ test("字段定义里每个字段都有中文说明，并标明用户配置还
   assert.equal(category(["runs"]), "用户配置");
   assert.equal(category(["factorLimit"]), "方法参数");
   assert.equal(category(["flow"]), "方法参数");
+  assert.equal(category(["models", "jev"]), "用户配置");
   assert.ok(seen.includes("/models/researchers/0/thinking"));
   assert.ok(seen.includes("/flow/ablation/cellRule"));
 });