diff --git a/packages/uwf-agent-hermes/__tests__/session-detail.test.ts b/packages/uwf-agent-hermes/__tests__/session-detail.test.ts
index 311b098..b1dfb00 100644
--- a/packages/uwf-agent-hermes/__tests__/session-detail.test.ts
+++ b/packages/uwf-agent-hermes/__tests__/session-detail.test.ts
@@ -16,7 +16,12 @@ describe("parseSessionIdFromStdout", () => {
     expect(parseSessionIdFromStdout(stdout)).toBe("20260518_223724_45ab80");
   });
 
-  test("returns null when trailing line is not session_id", () => {
+  test("reads session_id from the first line (quiet mode)", () => {
+    const stdout = "session_id: 20260518_165315_3467a1\nHello world\n";
+    expect(parseSessionIdFromStdout(stdout)).toBe("20260518_165315_3467a1");
+  });
+
+  test("returns null when no session_id line present", () => {
     expect(parseSessionIdFromStdout("only assistant text\n")).toBeNull();
   });
 });
diff --git a/packages/uwf-agent-hermes/src/session-detail.ts b/packages/uwf-agent-hermes/src/session-detail.ts
index 3e29f6d..e95487e 100644
--- a/packages/uwf-agent-hermes/src/session-detail.ts
+++ b/packages/uwf-agent-hermes/src/session-detail.ts
@@ -24,19 +24,14 @@ export function getHermesSessionPath(sessionId: string): string {
   return join(getHermesSessionsDir(), `session_${sessionId}.json`);
 }
 
-/** Parse `session_id: …` from the last non-empty line of Hermes stdout. */
+/** Parse `session_id: …` from any line of Hermes stdout. */
 export function parseSessionIdFromStdout(stdout: string): string | null {
-  const lines = stdout.split(/\r?\n/).map((line) => line.trim());
-  for (let i = lines.length - 1; i >= 0; i--) {
-    const line = lines[i];
-    if (line === undefined || line === "") {
-      continue;
-    }
-    const match = SESSION_ID_LINE.exec(line);
+  const lines = stdout.split(/\r?\n/);
+  for (const line of lines) {
+    const match = SESSION_ID_LINE.exec(line.trim());
     if (match?.[1] !== undefined) {
       return match[1];
     }
-    break;
   }
   return null;
 }