chore(logs): rotate daily and prune after 24h

src/logger.test.ts

@@ -7,7 +7,11 @@ import { afterEach, describe, expect, it, vi } from "vitest";
 
 import { setVerbose } from "./globals.js";
 import { logDebug, logError, logInfo, logSuccess, logWarn } from "./logger.js";
-import { resetLogger, setLoggerOverride } from "./logging.js";
+import {
+  DEFAULT_LOG_DIR,
+  resetLogger,
+  setLoggerOverride,
+} from "./logging.js";
 import type { RuntimeEnv } from "./runtime.js";
 
 describe("logger helpers", () => {
@@ -67,6 +71,28 @@ describe("logger helpers", () => {
     expect(content).toContain("warn-only");
     cleanup(logPath);
   });
+
+  it("uses daily rolling default log file and prunes old ones", () => {
+    resetLogger();
+    setLoggerOverride({}); // force defaults regardless of user config
+    const today = new Date().toISOString().slice(0, 10);
+    const todayPath = path.join(DEFAULT_LOG_DIR, `warelay-${today}.log`);
+
+    // create an old file to be pruned
+    const oldPath = path.join(DEFAULT_LOG_DIR, "warelay-2000-01-01.log");
+    fs.mkdirSync(DEFAULT_LOG_DIR, { recursive: true });
+    fs.writeFileSync(oldPath, "old");
+    fs.utimesSync(oldPath, new Date(0), new Date(0));
+    cleanup(todayPath);
+
+    logInfo("roll-me");
+
+    expect(fs.existsSync(todayPath)).toBe(true);
+    expect(fs.readFileSync(todayPath, "utf-8")).toContain("roll-me");
+    expect(fs.existsSync(oldPath)).toBe(false);
+
+    cleanup(todayPath);
+  });
 });
 
 function pathForTest() {