Add custom apps config and assets volume override

- apps.json: custom app list (erpnext, crm, telephony, helpdesk, payments, insights, lms)
- overrides/compose.assets-volume.yaml: shared assets volume for frontend/backend sync

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps.json

@@ -0,0 +1,9 @@
+[
+  { "url": "https://github.com/frappe/erpnext", "branch": "version-16" },
+  { "url": "https://github.com/frappe/crm", "branch": "main" },
+  { "url": "https://github.com/frappe/telephony", "branch": "develop" },
+  { "url": "https://github.com/frappe/helpdesk", "branch": "main" },
+  { "url": "https://github.com/frappe/payments", "branch": "develop" },
+  { "url": "https://github.com/frappe/insights", "branch": "main" },
+  { "url": "https://github.com/frappe/lms", "branch": "main" }
+]

overrides/compose.assets-volume.yaml

@@ -0,0 +1,27 @@
+services:
+  backend:
+    volumes:
+      - assets:/home/frappe/frappe-bench/sites/assets
+
+  frontend:
+    volumes:
+      - assets:/home/frappe/frappe-bench/sites/assets
+
+  websocket:
+    volumes:
+      - assets:/home/frappe/frappe-bench/sites/assets
+
+  scheduler:
+    volumes:
+      - assets:/home/frappe/frappe-bench/sites/assets
+
+  queue-short:
+    volumes:
+      - assets:/home/frappe/frappe-bench/sites/assets
+
+  queue-long:
+    volumes:
+      - assets:/home/frappe/frappe-bench/sites/assets
+
+volumes:
+  assets: