Refactor CLI and Twilio modules; add helper tests and comments

src/cli/deps.ts

@@ -0,0 +1,4 @@
+import { createDefaultDeps } from "../index.js";
+import { logWebSelfId, logTwilioFrom, monitorTwilio } from "../index.js";
+
+export { createDefaultDeps, logWebSelfId, logTwilioFrom, monitorTwilio };