feat: Add voice calling as a capability on Twilio SMS channel(Enterprise) (#13963)

Voice calling is now a capability on the existing TwilioSms rather than
a separate Voice model. A single Twilio phone number handles both SMS
and voice calls through one inbox.
Fixes
https://linear.app/chatwoot/issue/CW-6683/add-voice-calling-as-a-capability-on-twilio-sms-channel
and https://linear.app/chatwoot/issue/PLA-120/add-the-support-for-sms

**What changed**
- Replaced Channel::Voice with voice_enabled flag on Channel::TwilioSms
- Added voice_enabled, twiml_app_sid, api_key_secret columns to
channel_twilio_sms table
  - Dropped channel_voice table (no production data)
- All voice logic lives in Enterprise layer via
prepend_mod_with('Channel::TwilioSms')
- Added Voice settings tab on Twilio SMS inbox settings to
enable/disable voice
  - Validates Twilio number voice capability before provisioning
- Teardown service cleans up TwiML app and credentials when voice is
disabled
- Frontend voice detection uses isVoiceCallEnabled() /
getVoiceCallProvider() helpers — extensible to future providers
  - Gated by channel_voice feature flag

**How to test**

1. Enable feature flag:
Account.find(<id>).enable_features('channel_voice')
2. Create voice inbox: Inboxes → Voice tile → enter Twilio credentials →
verify incoming/outgoing calls and SMS work
3. Enable voice on existing SMS inbox: Inboxes → select Twilio SMS inbox
→ Voice tab → toggle on → provide API key credentials → verify calls
work
4. Disable voice: Voice tab → toggle off → verify TwiML app is deleted,
credentials cleared, SMS still works
5. Re-enable voice: Toggle on again → must provide api_key_secret again
→ new TwiML app provisioned

---------

Co-authored-by: Muhsin <12408980+muhsin-k@users.noreply.github.com>

app/javascript/dashboard/components-next/Contacts/VoiceCallButton.vue

@@ -3,7 +3,7 @@ import { computed, ref, useAttrs } from 'vue';
 import { useI18n } from 'vue-i18n';
 import { useRoute, useRouter } from 'vue-router';
 import { useMapGetter, useStore } from 'dashboard/composables/store';
-import { INBOX_TYPES } from 'dashboard/helper/inbox';
+import { isVoiceCallEnabled } from 'dashboard/helper/inbox';
 import { useAlert } from 'dashboard/composables';
 import { frontendURL, conversationUrl } from 'dashboard/helper/URLHelper';
 import { useCallsStore } from 'dashboard/stores/calls';
@@ -34,9 +34,7 @@ const inboxesList = useMapGetter('inboxes/getInboxes');
 const contactsUiFlags = useMapGetter('contacts/getUIFlags');
 
 const voiceInboxes = computed(() =>
-  (inboxesList.value || []).filter(
-    inbox => inbox.channel_type === INBOX_TYPES.VOICE
-  )
+  (inboxesList.value || []).filter(isVoiceCallEnabled)
 );
 const hasVoiceInboxes = computed(() => voiceInboxes.value.length > 0);
 

app/javascript/dashboard/components-next/NewConversation/components/ActionButtons.vue

@@ -8,8 +8,6 @@ import { useEventListener } from '@vueuse/core';
 import { ALLOWED_FILE_TYPES } from 'shared/constants/messages';
 import { useKeyboardEvents } from 'dashboard/composables/useKeyboardEvents';
 import FileUpload from 'vue-upload-component';
-import { INBOX_TYPES } from 'dashboard/helper/inbox';
-
 import Button from 'dashboard/components-next/button/Button.vue';
 import WhatsAppOptions from './WhatsAppOptions.vue';
 import ContentTemplateSelector from './ContentTemplateSelector.vue';
@@ -30,6 +28,7 @@ const props = defineProps({
   isDropdownActive: { type: Boolean, default: false },
   messageSignature: { type: String, default: '' },
   inboxId: { type: Number, default: null },
+  voiceEnabled: { type: Boolean, default: false },
 });
 
 const emit = defineEmits([
@@ -82,11 +81,9 @@ const isRegularMessageMode = computed(() => {
   return !props.isWhatsappInbox && !props.isTwilioWhatsAppInbox;
 });
 
-const isVoiceInbox = computed(() => props.channelType === INBOX_TYPES.VOICE);
-
 const shouldShowSignatureButton = computed(() => {
   return (
-    props.hasSelectedInbox && isRegularMessageMode.value && !isVoiceInbox.value
+    props.hasSelectedInbox && isRegularMessageMode.value && !props.voiceEnabled
   );
 });
 
@@ -111,7 +108,7 @@ watch(
   () => props.hasSelectedInbox,
   newValue => {
     nextTick(() => {
-      if (newValue && !isVoiceInbox.value) setSignature();
+      if (newValue && !props.voiceEnabled) setSignature();
     });
   },
   { immediate: true }

app/javascript/dashboard/components-next/NewConversation/components/ComposeNewConversationForm.vue

@@ -2,7 +2,7 @@
 import { ref, computed } from 'vue';
 import { useVuelidate } from '@vuelidate/core';
 import { required, requiredIf } from '@vuelidate/validators';
-import { INBOX_TYPES } from 'dashboard/helper/inbox';
+import { INBOX_TYPES, isVoiceCallEnabled } from 'dashboard/helper/inbox';
 import {
   appendSignature,
   removeSignature,
@@ -100,6 +100,8 @@ const inboxChannelType = computed(() => props.targetInbox?.channelType || '');
 
 const inboxMedium = computed(() => props.targetInbox?.medium || '');
 
+const voiceCallEnabled = computed(() => isVoiceCallEnabled(props.targetInbox));
+
 const effectiveChannelType = computed(() =>
   getEffectiveChannelType(inboxChannelType.value, inboxMedium.value)
 );
@@ -442,6 +444,7 @@ useKeyboardEvents({
       :is-twilio-whats-app-inbox="inboxTypes.isTwilioWhatsapp"
       :message-templates="whatsappMessageTemplates"
       :channel-type="inboxChannelType"
+      :voice-enabled="voiceCallEnabled"
       :is-loading="isCreating"
       :disable-send-button="isCreating"
       :has-selected-inbox="!!targetInbox"

app/javascript/dashboard/components-next/icon/provider.js

@@ -1,4 +1,5 @@
 import { computed } from 'vue';
+import { isVoiceCallEnabled } from 'dashboard/helper/inbox';
 
 export function useChannelIcon(inbox) {
   const channelTypeIconMap = {
@@ -14,7 +15,6 @@ export function useChannelIcon(inbox) {
     'Channel::Whatsapp': 'i-woot-whatsapp',
     'Channel::Instagram': 'i-woot-instagram',
     'Channel::Tiktok': 'i-woot-tiktok',
-    'Channel::Voice': 'i-woot-voice',
   };
 
   const providerIconMap = {
@@ -38,6 +38,11 @@ export function useChannelIcon(inbox) {
       icon = 'i-woot-whatsapp';
     }
 
+    // Special case for voice-enabled inboxes (Twilio, WhatsApp, etc.)
+    if (isVoiceCallEnabled(inboxDetails)) {
+      icon = 'i-woot-voice';
+    }
+
     return icon ?? 'i-ri-global-fill';
   });
 

app/javascript/dashboard/components-next/icon/specs/provider.spec.js

@@ -19,8 +19,11 @@ describe('useChannelIcon', () => {
     expect(icon).toBe('i-woot-whatsapp');
   });
 
-  it('returns correct icon for Voice channel', () => {
-    const inbox = { channel_type: 'Channel::Voice' };
+  it('returns correct icon for voice-enabled Twilio channel', () => {
+    const inbox = {
+      channel_type: 'Channel::TwilioSms',
+      voice_enabled: true,
+    };
     const { value: icon } = useChannelIcon(inbox);
     expect(icon).toBe('i-woot-voice');
   });