WaboSign 1.3.0

Adds three new SMS providers alongside the existing BulkVS integration.

Added

• Twilio — form-encoded POST to the Messages API; Basic Auth with SID:Token; treats a 201 response carrying an error_code as a failure.
• VoIP.ms — query-string-auth GET to sendSMS; treats status != "success" as a failure even on HTTP 200; enforces the API's 160-byte hard cap before dispatch.
• SignalWire — Twilio-shaped client targeting the per-account Space URL host; strips https:// and any trailing / from the user-supplied space URL.
• /settings/sms — dynamic provider select driven by Sms::SUPPORTED_PROVIDERS, per-provider field blocks toggled by a nonce'd inline script (the app's CSP requires nonces on inline JS).
• SMS.md — per-provider "Configuring …" sections, wire-format quick-reference table, updated extension and status-code map sections.

Changed

• lib/sms.rb dispatches via per-provider classes and delegates the "is this configured" check to each provider — replaces the BulkVS-only hardcoded gate in enabled_for?.
• app/controllers/sms_settings_controller.rb extends the preserve-secret-on-blank-edit pattern (used for BulkVS) to all four providers' password/token fields via a SECRET_KEYS array.
• Existing BulkVS configs keep working unchanged — credentials remain in their existing keys; the provider key defaults to bulkvs when absent.

Notes

• Released image: ghcr.io/wabolabs/wabosign:1.3.0 (also tagged :latest).
• This release is a fast-follow on 1.2.0 — same upstream-sync state, plus the SMS providers.