eval: 准备正向采纳的真实运行恢复与质量评估

新增单份串行启动入口、首个正向运行杀进程恢复证据、逐候选审阅导出与账目统计；参考只读副本分数对照。456项免费测试通过，尚未启动三份真实验收。同步结构说明与当前工作状态。

eval/lib/light-checks.ts

@@ -0,0 +1,77 @@
+import { readdirSync, readFileSync } from "node:fs";
+import { join } from "node:path";
+
+/** Pi 会话里的 research_check：请求和结果按 toolCallId 配对，不把超限请求算成执行。 */
+export function lightCheckUsage(sessionDir: string, maxCount: number) {
+  type Part = { type: string; id?: string; name?: string; text?: string };
+  type Message = {
+    role: string;
+    toolCallId?: string;
+    toolName?: string;
+    isError?: boolean;
+    content: Part[];
+  };
+  const requests: Array<{ id: string; file: string; line: number }> = [];
+  const results = new Map<
+    string,
+    { file: string; line: number; message: Message }
+  >();
+  const files = readdirSync(sessionDir)
+    .filter((f) => f.endsWith(".jsonl"))
+    .sort();
+  if (files.length === 0) throw new Error(`没有会话文件：${sessionDir}`);
+  for (const file of files) {
+    readFileSync(join(sessionDir, file), "utf8")
+      .split("\n")
+      .forEach((line, index) => {
+        if (!line.trim()) return;
+        const entry = JSON.parse(line) as { type: string; message?: Message };
+        const m = entry.message;
+        if (entry.type !== "message" || m === undefined) return;
+        if (m.role === "assistant") {
+          for (const p of m.content)
+            if (p.type === "toolCall" && p.name === "research_check")
+              requests.push({ id: p.id!, file, line: index + 1 });
+        } else if (m.role === "toolResult" && m.toolName === "research_check")
+          results.set(m.toolCallId!, { file, line: index + 1, message: m });
+      });
+  }
+  const checks = requests.map((request) => {
+    const result = results.get(request.id);
+    if (result === undefined)
+      return { request, result: null, status: "missingResult", used: null };
+    const text = result.message.content
+      .filter((p) => p.type === "text")
+      .map((p) => p.text)
+      .join("\n");
+    const source = { file: result.file, line: result.line, text };
+    if (result.message.isError)
+      return { request, result: source, status: "toolError", used: null };
+    if (text.startsWith("本次调用的轻量检查已用完"))
+      return { request, result: source, status: "deniedLimit", used: null };
+    const value = JSON.parse(text) as {
+      used: number;
+      maxCount: number;
+      seconds: number;
+      result: unknown;
+    };
+    return { request, result: source, status: "executed", used: value.used };
+  });
+  const used = checks.flatMap((c) => (c.used === null ? [] : [c.used]));
+  const unresolved = checks.some(
+    (c) => c.status === "missingResult" || c.status === "toolError",
+  );
+  return {
+    sessionDir,
+    maxCount,
+    requested: checks.length,
+    executed: used.length,
+    deniedLimit: checks.filter((c) => c.status === "deniedLimit").length,
+    // 工具报错或缺结果时不能猜实际执行量，也不当作 0 次通过。
+    pass:
+      !unresolved &&
+      used.length <= maxCount &&
+      used.every((n, i) => n === i + 1),
+    checks,
+  };
+}