Refactor Roadmap (2025-11-25)

This is a living note capturing the cleanups underway to keep warelay small and maintainable.

Goals

Keep src/index.ts thin (<150 LOC) and treat it purely as the CLI entry/export surface.
Encapsulate infra helpers (ports, binaries, tailscale) and provider-specific code behind small modules.
Harden configuration validation and logging so users get actionable errors.
Improve UX for experimenting (dry‑run) without hitting Twilio or WhatsApp.

Extracted infra helpers into src/infra/{ports,binaries,tailscale}.ts.
Moved CLI dependency wiring into src/cli/deps.ts; monitorWebProvider now lives in provider-web.ts.
Added prompt/wait helpers (src/cli/{prompt,wait}.ts) and Twilio sender discovery module (src/twilio/senders.ts).
Slimmed src/index.ts to ~130 LOC.
README updated to document direct WhatsApp Web support and Claude output handling.
Added zod validation for ~/.warelay/warelay.json and a --dry-run flag for send.
Introduced a tiny logger (src/logger.ts) and backoff retry in Twilio polling.
Added --json for send, logger adoption for web/twilio sends, and retries for webhook bring-up.

Centralize logging/verbosity (runtime-aware logger wrapper).
Provider barrels (src/providers/twilio, src/providers/web) to isolate imports further.
Webhook module grouping (src/webhook/*) to house server + Twilio update helpers.
Retry/backoff for webhook bring-up and monitor polling.
More unit tests for infra helpers (ports, tailscale) and CLI dep wiring.