fix(signal): map stderr INFO to log

src/signal/daemon.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+
+import { classifySignalCliLogLine } from "./daemon.js";
+
+describe("classifySignalCliLogLine", () => {
+  it("treats INFO/DEBUG as log (even if emitted on stderr)", () => {
+    expect(classifySignalCliLogLine("INFO  DaemonCommand - Started")).toBe(
+      "log",
+    );
+    expect(classifySignalCliLogLine("DEBUG Something")).toBe("log");
+  });
+
+  it("treats WARN/ERROR as error", () => {
+    expect(classifySignalCliLogLine("WARN  Something")).toBe("error");
+    expect(classifySignalCliLogLine("WARNING Something")).toBe("error");
+    expect(classifySignalCliLogLine("ERROR Something")).toBe("error");
+  });
+
+  it("returns null for empty lines", () => {
+    expect(classifySignalCliLogLine("")).toBe(null);
+    expect(classifySignalCliLogLine("   ")).toBe(null);
+  });
+});