feat(menu): priority-sorted menu groups, user-menu items, sidebar appearance toggle

Every main_menu entry moves from numeric group (1/2/3) to string-based group + group_label + priority. Groups now carry their own i18n label and child entries are sorted by an explicit priority field instead of config-array order, so module-contributed menu items can slot into any existing group at any position.

BootstrapController merges module-registered menu items into main_menu (previously they lived in a separate module_menu response key) and introduces a user_menu response key for items modules want to place in the avatar dropdown. The global store follows suit: moduleMenu becomes userMenu, menuGroups is a computed that sorts by priority, and hasActiveModules drops out.

New admin Appearance setting page with a single toggle for whether sidebar group labels render — so instances that prefer a compact sidebar can hide the Documents/Administration/Modules headings without losing the grouping itself. CompanyLayout watches route meta and re-bootstraps when the admin-mode flag flips so the sidebar repaints with the right menu on navigation across the admin boundary.

Test suites updated: module menu merging is asserted against main_menu (name: 'module-{slug}') rather than the old module_menu response; HelloWorldIntegrationTest verifies the schema translation path; CompanyModulesIndexTest covers the display_name attachment.

lang/en.json

@@ -14,6 +14,8 @@
     "users": "Users",
     "members": "Members",
     "modules": "Modules",
+    "documents": "Documents",
+    "admin": "Administration",
     "administration": "Administration",
     "companies": "Companies",
     "all_users": "Users"
@@ -773,6 +775,7 @@
     "no_modules_installed": "No Modules Installed Yet!",
     "disable_warning": "All the settings for this particular will be reverted.",
     "what_you_get": "What you get",
+    "screenshots": "Screenshots",
     "sign_up_and_get_token": "Sign up & Get Token",
     "index": {
       "description": "Modules activated by your administrator on this instance. Each company configures its own settings independently.",
@@ -911,7 +914,14 @@
       "notes": "Record Notes",
       "exchange_rate": "Exchange Rate",
       "address_information": "Address Information",
-      "pdf_generation": "PDF Generation"
+      "pdf_generation": "PDF Generation",
+      "appearance": "Appearance"
+    },
+    "appearance": {
+      "title": "Appearance",
+      "description": "Customize how the application looks and feels.",
+      "sidebar_group_labels": "Show sidebar group labels",
+      "sidebar_group_labels_desc": "Display section headers like Documents, Administration, and Modules in the sidebar navigation."
     },
     "address_information": {
       "section_description": "  You can update Your Address information using form below."