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/unique-filename/test/index.js

@@ -0,0 +1,23 @@
+'sue strict'
+var t = require('tap')
+var uniqueFilename = require('../index.js')
+
+t.plan(6)
+
+var randomTmpfile = uniqueFilename('tmp')
+t.like(randomTmpfile, /^tmp.[a-f0-9]{8}$/, 'random tmp file')
+
+var randomAgain = uniqueFilename('tmp')
+t.notEqual(randomAgain, randomTmpfile, 'random tmp files are not the same')
+
+var randomPrefixedTmpfile = uniqueFilename('tmp', 'my-test')
+t.like(randomPrefixedTmpfile, /^tmp.my-test-[a-f0-9]{8}$/, 'random prefixed tmp file')
+
+var randomPrefixedAgain = uniqueFilename('tmp', 'my-test')
+t.notEqual(randomPrefixedAgain, randomPrefixedTmpfile, 'random prefixed tmp files are not the same')
+
+var uniqueTmpfile = uniqueFilename('tmp', 'testing', '/my/thing/to/uniq/on')
+t.like(uniqueTmpfile, /^tmp.testing-7ddd44c0$/, 'unique filename')
+
+var uniqueAgain = uniqueFilename('tmp', 'testing', '/my/thing/to/uniq/on')
+t.is(uniqueTmpfile, uniqueAgain, 'same unique string component produces same filename')