fix: align rolling logs to local time

src/gateway/server-methods/logs.test.ts

@@ -0,0 +1,51 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+import { resetLogger, setLoggerOverride } from "../../logging.js";
+import { logsHandlers } from "./logs.js";
+
+const noop = () => false;
+
+describe("logs.tail", () => {
+  afterEach(() => {
+    resetLogger();
+    setLoggerOverride(null);
+  });
+
+  it("falls back to latest rolling log file when today is missing", async () => {
+    const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-logs-"));
+    const older = path.join(tempDir, "clawdbot-2026-01-20.log");
+    const newer = path.join(tempDir, "clawdbot-2026-01-21.log");
+
+    await fs.writeFile(older, '{"msg":"old"}\n');
+    await fs.writeFile(newer, '{"msg":"new"}\n');
+    await fs.utimes(older, new Date(0), new Date(0));
+    await fs.utimes(newer, new Date(), new Date());
+
+    setLoggerOverride({ file: path.join(tempDir, "clawdbot-2026-01-22.log") });
+
+    const respond = vi.fn();
+    await logsHandlers["logs.tail"]({
+      params: {},
+      respond,
+      context: {} as unknown as Parameters<(typeof logsHandlers)["logs.tail"]>[0]["context"],
+      client: null,
+      req: { id: "req-1", type: "req", method: "logs.tail" },
+      isWebchatConnect: noop,
+    });
+
+    expect(respond).toHaveBeenCalledWith(
+      true,
+      expect.objectContaining({
+        file: newer,
+        lines: ['{"msg":"new"}'],
+      }),
+      undefined,
+    );
+
+    await fs.rm(tempDir, { recursive: true, force: true });
+  });
+});