feat: 研究编号只许小写、配置路径必须绝对；检验判重两个顺序取平均

任务书 13 第一部分，用户 2026-10-03 同意。
- config：studyId 限定小写字母、数字和 ._-；task、promptDir 必须以 / 开头。
- eval：research.json 路径改绝对，writeConfig 不再转换；quality.ts 第 2、6 问每对 A、B 与 B、A 各问一次取平均，两次原始概率都存。
- tests：大写编号、相对路径各加测试。

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

tests/config-check.test.ts

@@ -71,7 +71,7 @@ test("类型或取值不对报错，带字段路径", () => {
     [(c) => (c.runs = 0), /^\/runs：不能小于 1$/m],
     [(c) => (c.batchLimit = 1.5), /^\/batchLimit：应为整数$/m],
     [(c) => (c.studyId = "../x"), /^\/studyId：格式不对/m],
-    [(c) => (c.task = "  "), /^\/task：不能为空，也不能只有空白$/m],
+    [(c) => (c.task = "  "), /^\/task：必须是绝对路径（以 \/ 开头）$/m],
     [(c) => (c.devEntry = "false"), /^\/devEntry：应为true 或 false$/m],
     [(c) => ((c.models as Obj).researchers = []), /^\/models\/researchers：至少要有 1 项$/m],
     [(c) => (((c.models as Obj).verifier as Obj).thinking = null), /^\/models\/verifier\/thinking：只能是 "off"、"minimal"、"low"、"medium"、"high"、"xhigh"、"max" 之一$/m],
@@ -91,6 +91,32 @@ test("类型或取值不对报错，带字段路径", () => {
   }
 });
 
+test("研究编号带大写报错：它会进 Docker 镜像名，镜像名只认小写", () => {
+  for (const id of ["Circle-1", "circle-A", "R0"]) {
+    const config = fullConfig() as unknown as Obj;
+    config.studyId = id;
+    const message = errorOf(config);
+    assert.match(message, /^\/studyId：格式不对/m);
+    assert.match(message, /共 1 处/, message);
+  }
+});
+
+test("任务目录、提示词目录写相对路径报错，报错写明字段路径", () => {
+  const cases: Array<[string, string]> = [
+    ["task", "tasks/circle_packing"],
+    ["task", "./tasks/circle_packing"],
+    ["promptDir", "prompts"],
+    ["promptDir", "../InfoRSI/prompts"],
+  ];
+  for (const [field, path] of cases) {
+    const config = fullConfig() as unknown as Obj;
+    config[field] = path;
+    const message = errorOf(config);
+    assert.match(message, new RegExp(`^/${field}：必须是绝对路径（以 / 开头）$`, "m"));
+    assert.match(message, /共 1 处/, message);
+  }
+});
+
 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;