Marketing Hub: RBAC, i18n (AR/EN), tasks overhaul, team/user merge, tutorial

Features:
- Full RBAC with 3 roles (superadmin/manager/contributor)
- Ownership tracking on posts, tasks, campaigns, projects
- Task system: assign to anyone, filter combobox, visibility scoping
- Team members merged into users table (single source of truth)
- Post thumbnails on kanban cards from attachments
- Publication link validation before publishing
- Interactive onboarding tutorial with Settings restart
- Full Arabic/English i18n with RTL layout support
- Language toggle in sidebar, IBM Plex Sans Arabic font
- Brand-based visibility filtering for non-superadmins
- Manager can only create contributors
- Profile completion flow for new users
- Cookie-based sessions (express-session + SQLite)

server/node_modules/expand-template/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "expand-template",
+  "version": "2.0.3",
+  "description": "Expand placeholders in a template string",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ralphtheninja/expand-template.git"
+  },
+  "homepage": "https://github.com/ralphtheninja/expand-template",
+  "scripts": {
+    "test": "tape test.js && standard"
+  },
+  "keywords": [
+    "template",
+    "expand",
+    "replace"
+  ],
+  "author": "LM <ralphtheninja@riseup.net>",
+  "license": "(MIT OR WTFPL)",
+  "dependencies": {},
+  "devDependencies": {
+    "standard": "^12.0.0",
+    "tape": "^4.2.2"
+  },
+  "engines": {
+    "node": ">=6"
+  }
+}