test(cli): cover the doctor's tmux line

The row was added without a check here, so a regression that dropped it
would only surface when someone's Start Run failed silently again.

server/__tests__/agenthub-cli.test.js

@@ -369,7 +369,7 @@ describe("agenthub CLI — import & administration", () => {
     assert.match(err, /Usage: agenthub import/);
   });
 
-  it("doctor reports API, hooks, database, remotes, and uptime lines", async () => {
+  it("doctor reports API, hooks, database, tmux, remotes, and uptime lines", async () => {
     const { code, out } = await agenthub("doctor");
     // Exit 1 when hooks are missing (common in the test harness) — still prints a full report.
     assert.ok(code === 0 || code === 1, `unexpected exit ${code}`);
@@ -377,6 +377,10 @@ describe("agenthub CLI — import & administration", () => {
     assert.match(out, /Claude Code hooks/);
     assert.match(out, /Database/);
     assert.match(out, /Server uptime/);
+    // Asked of the server (GET /api/run/tmux), not of this shell: a missing
+    // tmux is why Start Run fails, and the server's PATH is the one that
+    // decides. Reported either way, and never fatal.
+    assert.match(out, /tmux/);
     assert.match(out, /Remote sources/);
   });