feat(voice): move WhatsApp calling toggle to its own Calls tab

Mirror the Twilio voice configuration flow: split the WhatsApp Cloud
calling-enabled toggle out of the generic Configuration tab into a
dedicated Calls tab so the surface for telephony settings is consistent
across providers.

- Added WhatsappCallingPage.vue with the toggle, business phone display,
  and a how-it-works blurb (no extra credentials needed since the
  embedded-signup token already grants the call scopes).
- Settings.vue: register the page and surface a Calls tab on
  WhatsApp Cloud + embedded-signup inboxes.
- ConfigurationPage.vue: drop the inline calling-enabled section, the
  watcher that auto-saved on every toggle flip, and the now-orphan
  updateWhatsAppCallingEnabled method.
- en/inboxMgmt.json: TABS.CALLS label + WHATSAPP_CALLING.* strings.

app/javascript/dashboard/i18n/locale/en/inboxMgmt.json

@@ -637,7 +637,8 @@
       "BOT_CONFIGURATION": "Bot Configuration",
       "ACCOUNT_HEALTH": "Account Health",
       "CSAT": "CSAT",
-      "VOICE": "Voice"
+      "VOICE": "Voice",
+      "CALLS": "Calls"
     },
     "VOICE_CONFIGURATION": {
       "ENABLE_VOICE": {
@@ -648,6 +649,20 @@
         "DESCRIPTION": "Voice calling requires Twilio API Key credentials. These are used to generate tokens for agent voice connections."
       }
     },
+    "WHATSAPP_CALLING": {
+      "ENABLE": {
+        "LABEL": "Enable WhatsApp Calling",
+        "DESCRIPTION": "Allow agents to receive and place WhatsApp Cloud calls on this inbox. Customers can call this business number directly from WhatsApp."
+      },
+      "PHONE_NUMBER": {
+        "LABEL": "Business phone number",
+        "HELP_TEXT": "WhatsApp number that customers will call."
+      },
+      "HOW_IT_WORKS": {
+        "LABEL": "How it works",
+        "DESCRIPTION": "Calls are placed peer-to-peer between the agent's browser and Meta — no extra credentials are required. Make sure the agent's browser has microphone permission for this site."
+      }
+    },
     "CHANNEL_PREFERENCES": "Channel Preferences",
     "WIDGET_FEATURES": "Widget features",
     "ACCOUNT_HEALTH": {

app/javascript/dashboard/routes/dashboard/settings/inbox/Settings.vue

@@ -22,6 +22,7 @@ import WeeklyAvailability from './components/WeeklyAvailability.vue';
 import GreetingsEditor from 'shared/components/GreetingsEditor.vue';
 import ConfigurationPage from './settingsPage/ConfigurationPage.vue';
 import VoiceConfigurationPage from './settingsPage/VoiceConfigurationPage.vue';
+import WhatsappCallingPage from './settingsPage/WhatsappCallingPage.vue';
 import CustomerSatisfactionPage from './settingsPage/CustomerSatisfactionPage.vue';
 import CollaboratorsPage from './settingsPage/CollaboratorsPage.vue';
 import BotConfiguration from './components/BotConfiguration.vue';
@@ -48,6 +49,7 @@ export default {
     CollaboratorsPage,
     ConfigurationPage,
     VoiceConfigurationPage,
+    WhatsappCallingPage,
     CustomerSatisfactionPage,
     FacebookReauthorize,
     GreetingsEditor,
@@ -249,6 +251,16 @@ export default {
         ];
       }
 
+      if (this.isAWhatsAppCloudChannel && this.isEmbeddedSignupWhatsApp) {
+        visibleToAllChannelTabs = [
+          ...visibleToAllChannelTabs,
+          {
+            key: 'calls-configuration',
+            name: this.$t('INBOX_MGMT.TABS.CALLS'),
+          },
+        ];
+      }
+
       return visibleToAllChannelTabs;
     },
     currentInboxId() {
@@ -1262,6 +1274,12 @@ export default {
         >
           <VoiceConfigurationPage :inbox="inbox" />
         </div>
+        <div
+          v-if="selectedTabKey === 'calls-configuration'"
+          class="mx-6 max-w-4xl"
+        >
+          <WhatsappCallingPage :inbox="inbox" />
+        </div>
         <div v-if="selectedTabKey === 'csat'">
           <CustomerSatisfactionPage :inbox="inbox" />
         </div>

app/javascript/dashboard/routes/dashboard/settings/inbox/settingsPage/ConfigurationPage.vue

@@ -44,7 +44,6 @@ export default {
       allowedDomains: '',
       isUpdatingAllowedDomains: false,
       isSettingDefaults: false,
-      whatsAppCallingEnabled: false,
     };
   },
   validations: {
@@ -72,10 +71,6 @@ export default {
       if (!this.isSettingDefaults && this.isAWebWidgetInbox)
         this.handleHmacFlag();
     },
-    whatsAppCallingEnabled() {
-      if (!this.isSettingDefaults && this.isEmbeddedSignupWhatsApp)
-        this.updateWhatsAppCallingEnabled();
-    },
   },
   mounted() {
     this.setDefaults();
@@ -88,9 +83,6 @@ export default {
         this.inbox.selected_feature_flags || []
       ).includes('allow_mobile_webview');
       this.allowedDomains = this.inbox.allowed_domains || '';
-      this.whatsAppCallingEnabled = Boolean(
-        this.inbox.provider_config?.calling_enabled
-      );
       this.$nextTick(() => {
         this.isSettingDefaults = false;
       });
@@ -155,24 +147,6 @@ export default {
         this.isUpdatingAllowedDomains = false;
       }
     },
-    async updateWhatsAppCallingEnabled() {
-      try {
-        const payload = {
-          id: this.inbox.id,
-          formData: false,
-          channel: {
-            provider_config: {
-              ...this.inbox.provider_config,
-              calling_enabled: this.whatsAppCallingEnabled,
-            },
-          },
-        };
-        await this.$store.dispatch('inboxes/updateInbox', payload);
-        useAlert(this.$t('INBOX_MGMT.EDIT.API.SUCCESS_MESSAGE'));
-      } catch (error) {
-        useAlert(this.$t('INBOX_MGMT.EDIT.API.ERROR_MESSAGE'));
-      }
-    },
     async updateWhatsAppInboxAPIKey() {
       try {
         const payload = {
@@ -400,15 +374,6 @@ export default {
             </NextButton>
           </div>
         </SettingsFieldSection>
-        <SettingsToggleSection
-          v-model="whatsAppCallingEnabled"
-          :header="
-            $t('INBOX_MGMT.SETTINGS_POPUP.WHATSAPP_CALLING_ENABLED.LABEL')
-          "
-          :description="
-            $t('INBOX_MGMT.SETTINGS_POPUP.WHATSAPP_CALLING_ENABLED.DESCRIPTION')
-          "
-        />
       </template>
 
       <!-- Manual Setup Section -->

app/javascript/dashboard/routes/dashboard/settings/inbox/settingsPage/WhatsappCallingPage.vue

@@ -0,0 +1,91 @@
+<script>
+import { useAlert } from 'dashboard/composables';
+import SettingsFieldSection from 'dashboard/components-next/Settings/SettingsFieldSection.vue';
+import SettingsToggleSection from 'dashboard/components-next/Settings/SettingsToggleSection.vue';
+import NextButton from 'dashboard/components-next/button/Button.vue';
+
+export default {
+  components: {
+    SettingsFieldSection,
+    SettingsToggleSection,
+    NextButton,
+  },
+  props: {
+    inbox: {
+      type: Object,
+      default: () => ({}),
+    },
+  },
+  data() {
+    return {
+      callingEnabled: this.inbox.provider_config?.calling_enabled || false,
+      isUpdating: false,
+    };
+  },
+  computed: {
+    phoneNumber() {
+      return (
+        this.inbox.provider_config?.phone_number || this.inbox.phone_number
+      );
+    },
+  },
+  watch: {
+    'inbox.provider_config.calling_enabled'(val) {
+      this.callingEnabled = val || false;
+    },
+  },
+  methods: {
+    async updateCallingSettings() {
+      this.isUpdating = true;
+      try {
+        await this.$store.dispatch('inboxes/updateInbox', {
+          id: this.inbox.id,
+          formData: false,
+          channel: {
+            provider_config: {
+              ...this.inbox.provider_config,
+              calling_enabled: this.callingEnabled,
+            },
+          },
+        });
+        useAlert(this.$t('INBOX_MGMT.EDIT.API.SUCCESS_MESSAGE'));
+      } catch (error) {
+        useAlert(this.$t('INBOX_MGMT.EDIT.API.ERROR_MESSAGE'));
+      } finally {
+        this.isUpdating = false;
+      }
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="flex flex-col gap-6">
+    <SettingsToggleSection
+      v-model="callingEnabled"
+      :header="$t('INBOX_MGMT.WHATSAPP_CALLING.ENABLE.LABEL')"
+      :description="$t('INBOX_MGMT.WHATSAPP_CALLING.ENABLE.DESCRIPTION')"
+    />
+
+    <SettingsFieldSection
+      v-if="phoneNumber"
+      :label="$t('INBOX_MGMT.WHATSAPP_CALLING.PHONE_NUMBER.LABEL')"
+      :help-text="$t('INBOX_MGMT.WHATSAPP_CALLING.PHONE_NUMBER.HELP_TEXT')"
+    >
+      <woot-code :script="phoneNumber" lang="html" />
+    </SettingsFieldSection>
+
+    <SettingsFieldSection
+      :label="$t('INBOX_MGMT.WHATSAPP_CALLING.HOW_IT_WORKS.LABEL')"
+      :help-text="$t('INBOX_MGMT.WHATSAPP_CALLING.HOW_IT_WORKS.DESCRIPTION')"
+    />
+
+    <div>
+      <NextButton
+        :is-loading="isUpdating"
+        :label="$t('INBOX_MGMT.SETTINGS_POPUP.UPDATE')"
+        @click="updateCallingSettings"
+      />
+    </div>
+  </div>
+</template>