chore(branding): adopt project-manager EnCoach logo across login and sidebars

- Replace public/logo-icon.png with the approved EnCoach wordmark
  (icon + "EnCoach" + tagline "Unlock your potential with AI powered platform").
- Login page shows the full branded logo at h-36 and drops the duplicate
  text heading since the wordmark is now baked into the asset.
- Student/Teacher/Admin sidebars show a small rounded icon when collapsed
  and the full wordmark at h-14 when expanded, removing the previous
  duplicated "EnCoach" text span.
- og:image in index.html already points at /logo-icon.png so social cards
  pick up the new branding automatically.

Made-with: Cursor

src/components/AdminLmsLayout.tsx

@@ -9,6 +9,8 @@ import { Collapsible, CollapsibleContent, CollapsibleTrigger } from "@/component
 import { NavLink } from "@/components/NavLink";
 import { useAuth } from "@/contexts/AuthContext";
 import NotificationDropdown from "@/components/NotificationDropdown";
+import { ThemeToggle } from "@/components/ThemeToggle";
+import { LanguageToggle } from "@/components/LanguageToggle";
 import AiAssistantDrawer from "@/components/ai/AiAssistantDrawer";
 import AiSearchBar from "@/components/ai/AiSearchBar";
 import { usePermissions } from "@/hooks/usePermissions";
@@ -29,7 +31,7 @@ import {
   CalendarDays, Landmark, UserPlus, ScrollText, Award,
   HelpCircle as FaqIcon, Bell, Workflow,
   CalendarOff, DollarSign, BookMarked, BarChartHorizontal, TrendingUp,
-  Library, Activity, Warehouse, UserCog,
+  Library, Activity, Warehouse, UserCog, Sparkles,
 } from "lucide-react";
 import React from "react";
 
@@ -56,6 +58,9 @@ const academicItems: NavItem[] = [
   { title: "Exam Structures", url: "/admin/exam-structures", icon: Layers },
   { title: "Rubrics", url: "/admin/rubrics", icon: BookOpen },
   { title: "Generation", url: "/admin/generation", icon: Wand2 },
+  { title: "Review Queue", url: "/admin/exam/review-queue", icon: Sparkles },
+  { title: "AI Prompts", url: "/admin/ai/prompts", icon: Wand2 },
+  { title: "AI Feedback", url: "/admin/ai/feedback", icon: Sparkles },
   { title: "Approval Workflows", url: "/admin/approval-workflows", icon: GitBranch },
 ];
 
@@ -150,6 +155,8 @@ const routeLabels: Record<string, string> = {
   students: "Students", teachers: "Teachers", batches: "Batches", timetable: "Timetable",
   reports: "Reports", assignments: "Assignments", examsList: "Exams List",
   "exam-structures": "Exam Structures", rubrics: "Rubrics", generation: "Generation",
+  "review-queue": "Review Queue", review: "Review", prompts: "AI Prompts", ai: "AI",
+  feedback: "Feedback",
   "approval-workflows": "Approval Workflows", users: "Users", entities: "Entities",
   classrooms: "Classrooms", "student-performance": "Student Performance",
   "stats-corporate": "Stats Corporate", record: "Record", training: "Training",
@@ -218,6 +225,8 @@ export default function AdminLmsLayout() {
             </div>
             <AiSearchBar />
             <div className="flex items-center gap-2">
+              <LanguageToggle />
+              <ThemeToggle />
               <NotificationDropdown />
               <Button variant="ghost" size="icon" onClick={() => navigate("/admin/tickets")} className="text-muted-foreground hover:text-foreground">
                 <Ticket className="h-4 w-4" />
@@ -282,12 +291,18 @@ function AdminSidebar() {
     <Sidebar collapsible="icon">
       <SidebarHeader className="p-4">
         <div className="flex items-center gap-2">
-          <img src="/logo.png" alt="EnCoach" className="h-8 w-8 rounded-lg shrink-0 object-contain" />
-          {!collapsed && (
-            <span className="text-lg font-bold tracking-tight text-sidebar-foreground">
-              <span className="text-[hsl(42,40%,62%)]">En</span>
-              <span>Coach</span>
-            </span>
+          {collapsed ? (
+            <img
+              src="/logo.png"
+              alt="EnCoach"
+              className="h-9 w-9 shrink-0 rounded-lg object-contain"
+            />
+          ) : (
+            <img
+              src="/logo.png"
+              alt="EnCoach — Unlock your potential with AI powered platform"
+              className="h-14 w-auto shrink-0 object-contain"
+            />
           )}
         </div>
       </SidebarHeader>