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/node-gyp/test/simple-proxy.js

@@ -0,0 +1,27 @@
+'use strict'
+
+const http = require('http')
+const https = require('https')
+const server = http.createServer(handler)
+const port = +process.argv[2]
+const prefix = process.argv[3]
+const upstream = process.argv[4]
+var calls = 0
+
+server.listen(port)
+
+function handler (req, res) {
+  if (req.url.indexOf(prefix) !== 0) {
+    throw new Error('request url [' + req.url + '] does not start with [' + prefix + ']')
+  }
+
+  var upstreamUrl = upstream + req.url.substring(prefix.length)
+  https.get(upstreamUrl, function (ures) {
+    ures.on('end', function () {
+      if (++calls === 2) {
+        server.close()
+      }
+    })
+    ures.pipe(res)
+  })
+}