Add Google Calendar integration via Supabase Edge Functions

- Create new create-google-meet-event edge function
- Use service account authentication (no OAuth needed)
- Add google_service_account_json field to platform_settings
- Add admin UI for service account JSON configuration
- Include test connection button in Integrasi tab
- Add comprehensive setup documentation
- Keep n8n workflows as alternative option

Features:
- Direct Google Calendar API integration
- JWT authentication with service account
- Auto-create Google Meet links
- No external dependencies needed
- Simple configuration via admin panel

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

n8n-workflows/create-google-meet-event.json

@@ -0,0 +1,89 @@
+{
+  "name": "Create Google Meet Event - Access Hub",
+  "nodes": [
+    {
+      "parameters": {
+        "httpMethod": "POST",
+        "path": "create-meet",
+        "responseMode": "responseNode",
+        "options": {}
+      },
+      "id": "webhook-trigger",
+      "name": "Webhook",
+      "type": "n8n-nodes-base.webhook",
+      "typeVersion": 1.1,
+      "position": [250, 300],
+      "webhookId": "create-meet-webhook"
+    },
+    {
+      "parameters": {
+        "operation": "create",
+        "calendarId": "={{ $json.calendar_id }}",
+        "title": "=Konsultasi: {{ $json.topic }} - {{ $json.client_name }}",
+        "description": "=Client: {{ $json.client_email }}\n\nNotes: {{ $json.notes }}\n\nSlot ID: {{ $json.slot_id }}",
+        "location": "Google Meet",
+        "attendees": "={{ $json.client_email }}",
+        "startsAt": "={{ $json.date }}T{{ $json.start_time }}",
+        "endsAt": "={{ $json.date }}T{{ $json.end_time }}",
+        "sendUpdates": "all",
+        "conferenceDataVersion": 1,
+        "options": {}
+      },
+      "id": "google-calendar",
+      "name": "Google Calendar",
+      "type": "n8n-nodes-base.googleCalendar",
+      "typeVersion": 2,
+      "position": [470, 300],
+      "credentials": {
+        "googleCalendarApi": {
+          "id": "REPLACE_WITH_YOUR_CREDENTIAL_ID",
+          "name": "Google Calendar account (Service Account)"
+        }
+      }
+    },
+    {
+      "parameters": {
+        "respondWith": "json",
+        "responseBody": "={{ { \"meet_link\": $json.hangoutLink, \"event_id\": $json.id, \"html_link\": $json.htmlLink } }}"
+      },
+      "id": "respond-to-webhook",
+      "name": "Respond to Webhook",
+      "type": "n8n-nodes-base.respondToWebhook",
+      "typeVersion": 1.1,
+      "position": [690, 300]
+    }
+  ],
+  "connections": {
+    "Webhook": {
+      "main": [
+        [
+          {
+            "node": "Google Calendar",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Google Calendar": {
+      "main": [
+        [
+          {
+            "node": "Respond to Webhook",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    }
+  },
+  "pinData": {},
+  "settings": {
+    "executionOrder": "v1"
+  },
+  "staticData": null,
+  "tags": [],
+  "triggerCount": 1,
+  "updatedAt": "2025-12-23T00:00:00.000Z",
+  "versionId": "1"
+}