Function awaitTools

agent/x/agentmcp/configwatcher_internal_test.go:37–45

These tests exercise the dual-agent late-file regression: the inner sandbox agent settles startup quickly and calls Reload while `~/.mcp.json` still does not exist on disk. The host agent then writes the file ~20s later. Before this fix, the manager cached an empty snapshot and stayed empty until a

(ctx context.Context, t *testing.T, m *Manager, pred func([]workspacesdk.MCPToolInfo) bool)

// awaitTools polls cachedTools until the predicate succeeds or
// the context expires. It avoids time.Sleep loops in callers.
func awaitTools(ctx context.Context, t *testing.T, m *Manager, pred func([]workspacesdk.MCPToolInfo) bool) []workspacesdk.MCPToolInfo {
	t.Helper()
	var final []workspacesdk.MCPToolInfo
	testutil.Eventually(ctx, t, func(context.Context) bool {
		final = m.cachedTools()
		return pred(final)
	}, testutil.IntervalFast)
	return final
}

// useFastDebounce shortens the watcher's debounce window so
// real-clock tests do not stall on the 250 ms default. Must be