Agent: repair malformed tool calls and session files

src/agents/session-file-repair.test.ts

@@ -0,0 +1,42 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+import { repairSessionFileIfNeeded } from "./session-file-repair.js";
+
+describe("repairSessionFileIfNeeded", () => {
+  it("rewrites session files that contain malformed lines", async () => {
+    const dir = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-session-repair-"));
+    const file = path.join(dir, "session.jsonl");
+    const header = {
+      type: "session",
+      version: 7,
+      id: "session-1",
+      timestamp: new Date().toISOString(),
+      cwd: "/tmp",
+    };
+    const message = {
+      type: "message",
+      id: "msg-1",
+      parentId: null,
+      timestamp: new Date().toISOString(),
+      message: { role: "user", content: "hello" },
+    };
+
+    const content = `${JSON.stringify(header)}\n${JSON.stringify(message)}\n{"type":"message"`;
+    await fs.writeFile(file, content, "utf-8");
+
+    const result = await repairSessionFileIfNeeded({ sessionFile: file });
+    expect(result.repaired).toBe(true);
+    expect(result.droppedLines).toBe(1);
+    expect(result.backupPath).toBeTruthy();
+
+    const repaired = await fs.readFile(file, "utf-8");
+    expect(repaired.trim().split("\n")).toHaveLength(2);
+
+    if (result.backupPath) {
+      const backup = await fs.readFile(result.backupPath, "utf-8");
+      expect(backup).toBe(content);
+    }
+  });
+});