test(bot-relay): live-Bot-Chat deliver test ignores the server's import-time git prefetch

tui_gateway.server kicks off prefetch_update_check() at import, which runs
`git rev-parse`/`rev-list` on a daemon thread. The test patched
subprocess.run with a fake that returned None and recorded every call, so
whenever that thread landed inside the test window the assertion saw a
`git` argv and the thread crashed on `.returncode` (red on main since
6e775907d7 made the fetch slower). Filter to non-git spawns and return a
real-shaped proc for everything.

tests/tui_gateway/test_bot_relay_methods.py

@@ -116,7 +116,18 @@ def test_deliver_lands_in_live_bot_chat_instead_of_subprocess(home, monkeypatch)
     """
     spawned = []
     submitted = []
-    monkeypatch.setattr("subprocess.run", lambda *a, **k: spawned.append(a) or None)
+
+    class _Proc:
+        returncode, stdout, stderr = 0, "pong", ""
+
+    def _fake_run(argv, *a, **k):
+        # The server module's import-time update prefetch runs `git ...` on a
+        # daemon thread; only the relay's `hermes` CLI spawn is under test.
+        if argv and argv[0] != "git":
+            spawned.append(argv)
+        return _Proc()
+
+    monkeypatch.setattr("subprocess.run", _fake_run)
     monkeypatch.setitem(
         srv._methods, "prompt.submit", lambda rid, p: submitted.append(p) or srv._ok(rid, {"status": "streaming"})
     )
@@ -137,10 +148,6 @@ def test_deliver_lands_in_live_bot_chat_instead_of_subprocess(home, monkeypatch)
     srv._sessions["live-ops"]["pending_title"] = "Scratch"
     submitted.clear()
 
-    class _Proc:
-        returncode, stdout, stderr = 0, "pong", ""
-
-    monkeypatch.setattr("subprocess.run", lambda *a, **k: spawned.append(a) or _Proc())
     out = _result(srv._methods["bot_relay.deliver"](2, {"profile": "ops", "message": "ping"}))
     assert out["reply"] == "pong" and spawned and not submitted