Fix AI Coach typo, fix bulk register UI, and update exam tiers

backend/main.py

@@ -1,7 +1,7 @@
 from fastapi import FastAPI, Depends, HTTPException, status, Request, UploadFile, File, Form, BackgroundTasks
 from fastapi.responses import StreamingResponse
 from fastapi.middleware.cors import CORSMiddleware
-from sqlmodel import Session, select
+from sqlmodel import Session, select, delete
 from contextlib import asynccontextmanager
 from typing import List, Dict, Any, Optional
 from uuid import UUID
@@ -286,6 +286,21 @@ async def bulk_register_students(file: UploadFile = File(...), session: Session
     session.commit()
     return results
 
+class DeleteUsersRequest(BaseModel):
+    user_ids: List[UUID]
+
+@app.delete("/api/admin/students/bulk", tags=["Admin"])
+def bulk_delete_students(payload: DeleteUsersRequest, session: Session = Depends(get_session)):
+    for uid in payload.user_ids:
+        user = session.get(models.User, uid)
+        if user:
+            # Delete associated records manually since foreign key cascade might not be configured in sqlmodel by default
+            session.exec(delete(models.Attempt).where(models.Attempt.user_id == uid))
+            session.exec(delete(models.Mistake).where(models.Mistake.user_id == uid))
+            session.delete(user)
+    session.commit()
+    return {"success": True}
+
 @app.post("/api/auth/register", tags=["Authentication"])
 def register(payload: RegisterPayload, session: Session = Depends(get_session)):
     import bcrypt

backend/models.py

@@ -24,7 +24,7 @@ class MediumEnum(str, Enum):
 class TierEnum(str, Enum):
     FREE = "Free"
     PRO = "Pro"
-    AI_COACH = "Al_Coach"
+    AI_COACH = "AI Coach"
 
 class QuestionTypeEnum(str, Enum):
     MCQ_SINGLE = "MCQ_Single"

demo_30_users.csv

@@ -0,0 +1,31 @@
+name,email,phone,target_exam,tier
+Aarav Sharma,aarav.sharma@example.com,9876543201,JEE + NEET,Pro
+Vivaan Gupta,vivaan.gupta@example.com,9876543202,NEET,Free
+Aditya Patel,aditya.patel@example.com,9876543203,JEE,Pro
+Vihaan Kumar,vihaan.kumar@example.com,9876543204,JEE + NEET,Pro
+Arjun Singh,arjun.singh@example.com,9876543205,JEE,Free
+Sai Reddy,sai.reddy@example.com,9876543206,JEE + NEET,AI Coach
+Reyansh Das,reyansh.das@example.com,9876543207,NEET,Pro
+Ayaan Joshi,ayaan.joshi@example.com,9876543208,JEE + NEET,Free
+Krishna Iyer,krishna.iyer@example.com,9876543209,NEET,Pro
+Ishaan Verma,ishaan.verma@example.com,9876543210,JEE,Free
+Shaurya Rajput,shaurya.rajput@example.com,9876543211,JEE,AI Coach
+Atharv Nair,atharv.nair@example.com,9876543212,NEET,Free
+Ananya Menon,ananya.menon@example.com,9876543213,JEE + NEET,Pro
+Diya Agarwal,diya.agarwal@example.com,9876543214,JEE + NEET,AI Coach
+Pari Kapoor,pari.kapoor@example.com,9876543215,JEE + NEET,Free
+Navya Jain,navya.jain@example.com,9876543216,JEE,Free
+Kavya Desai,kavya.desai@example.com,9876543217,JEE + NEET,Free
+Myra Choudhury,myra.choudhury@example.com,9876543218,JEE,Pro
+Ira Sengupta,ira.sengupta@example.com,9876543219,JEE,Free
+Saanvi Bhatt,saanvi.bhatt@example.com,9876543220,JEE + NEET,Pro
+Rudra Tiwari,rudra.tiwari@example.com,9876543221,NEET,Pro
+Kabir Mehra,kabir.mehra@example.com,9876543222,NEET,Free
+Madhav Rao,madhav.rao@example.com,9876543223,JEE + NEET,AI Coach
+Dhruv Menon,dhruv.menon@example.com,9876543224,JEE,Free
+Aryan Dutta,aryan.dutta@example.com,9876543225,JEE + NEET,Free
+Prisha Soni,prisha.soni@example.com,9876543226,JEE,Pro
+Avni Khatri,avni.khatri@example.com,9876543227,JEE + NEET,Pro
+Zara Sheikh,zara.sheikh@example.com,9876543228,JEE,Free
+Riya Mishra,riya.mishra@example.com,9876543229,JEE,Free
+Sneha Chawla,sneha.chawla@example.com,9876543230,JEE,Free

src/app/admin/settings/page.tsx

@@ -11,7 +11,7 @@ export default function SettingsPage() {
     allow_new_registrations: true,
     enable_free_trial: true,
     trial_duration_days: 5,
-    trial_tier: "Al_Coach"
+    trial_tier: "AI Coach"
   });
   const [loading, setLoading] = useState(true);
 
@@ -117,7 +117,7 @@ export default function SettingsPage() {
                   onChange={(e) => setSettings(prev => ({ ...prev, trial_tier: e.target.value }))}
                   className="w-full bg-background border border-border rounded-lg px-4 py-2 text-sm focus:outline-none focus:ring-1 focus:ring-[var(--cyan-ai)]">
                   <option value="Pro">Pro Tier</option>
-                  <option value="Al_Coach">AI Coach (All Features)</option>
+                  <option value="AI Coach">AI Coach (All Features)</option>
                 </select>
               </div>
             </div>

src/app/admin/students/[studentId]/page.tsx

@@ -13,11 +13,11 @@ import {
 } from "lucide-react"
 
 const TIER_STYLE: Record<string, string> = {
-  "Al_Coach": "bg-[var(--cyan-ai-10)] text-[var(--cyan-ai)] border-[var(--cyan-ai-20)]",
+  "AI Coach": "bg-[var(--cyan-ai-10)] text-[var(--cyan-ai)] border-[var(--cyan-ai-20)]",
   "Pro":      "bg-yellow-500/10 text-yellow-500 border-yellow-500/20",
   "Free":     "bg-secondary text-foreground border-border",
 }
-const TIER_LABEL: Record<string, string> = { "Al_Coach": "AI Coach", "Pro": "Pro", "Free": "Free" }
+const TIER_LABEL: Record<string, string> = { "AI Coach": "AI Coach", "Pro": "Pro", "Free": "Free" }
 
 function formatDate(iso?: string | null) {
   if (!iso) return "—"
@@ -164,7 +164,7 @@ export default function StudentKundliPage() {
                   >
                     <option value="Free">Free</option>
                     <option value="Pro">Pro</option>
-                    <option value="Al_Coach">AI Coach</option>
+                    <option value="AI Coach">AI Coach</option>
                   </select>
                 ) : (
                   <Badge className={TIER_STYLE[data.tier] || TIER_STYLE["Free"]} variant="outline">
@@ -178,13 +178,14 @@ export default function StudentKundliPage() {
                     onChange={e => setEditExam(e.target.value)}
                     className="text-sm bg-secondary border border-border rounded-lg px-3 py-1.5 focus:outline-none focus:ring-1 focus:ring-primary"
                   >
+                    <option value="JEE_Main">JEE</option>
                     <option value="NEET">NEET</option>
-                    <option value="JEE_Main">JEE Main</option>
-                    <option value="JEE_Advanced">JEE Advanced</option>
                     <option value="JEE_NEET">JEE + NEET</option>
                   </select>
                 ) : (
-                  <Badge variant="outline" className="border-border">{data.target_exam.replace("_", " ")}</Badge>
+                  <Badge variant="outline" className="border-border">
+                    {data.target_exam === "JEE_Main" ? "JEE" : data.target_exam.replace("_", " ")}
+                  </Badge>
                 )}
               </div>
 

src/app/admin/students/page.tsx

@@ -9,13 +9,13 @@ import { useRouter } from "next/navigation"
 import { useRef } from "react"
 
 const TIER_STYLE: Record<string, string> = {
-  "Al_Coach": "bg-[var(--cyan-ai-10)] text-[var(--cyan-ai)] border-[var(--cyan-ai-20)] font-bold",
+  "AI Coach": "bg-[var(--cyan-ai-10)] text-[var(--cyan-ai)] border-[var(--cyan-ai-20)] font-bold",
   "Pro":      "bg-yellow-500/10 text-yellow-500 border-yellow-500/20 font-bold",
   "Free":     "bg-secondary text-foreground border-border",
 }
 
 const TIER_LABEL: Record<string, string> = {
-  "Al_Coach": "AI Coach",
+  "AI Coach": "AI Coach",
   "Pro":      "Pro",
   "Free":     "Free",
 }
@@ -27,12 +27,14 @@ export default function StudentsPage() {
   const [search, setSearch] = useState("")
   const [selectedIds, setSelectedIds] = useState<string[]>([])
   const [deleting, setDeleting] = useState(false)
+  const [isUploading, setIsUploading] = useState(false)
 
   const fileInputRef = useRef<HTMLInputElement>(null)
   
   const handleBulkUpload = async (e: React.ChangeEvent<HTMLInputElement>) => {
     const file = e.target.files?.[0]
     if (!file) return
+    setIsUploading(true)
     setLoading(true)
     try {
       const formData = new FormData()
@@ -68,6 +70,7 @@ export default function StudentsPage() {
     } catch (err: any) {
       alert("Error: " + err.message)
     } finally {
+      setIsUploading(false)
       setLoading(false)
       if (fileInputRef.current) fileInputRef.current.value = ""
     }
@@ -141,9 +144,10 @@ export default function StudentsPage() {
               <Trash2 size={16} className="mr-2" /> Delete ({selectedIds.length})
             </Button>
           )}
-          <input type="file" accept=".csv" className="hidden" ref={fileInputRef} onChange={handleBulkUpload} />
+          <input type="file" accept=".csv" className="hidden" ref={fileInputRef} onChange={handleBulkUpload} disabled={isUploading} />
-          <Button variant="outline" className="border-border hover:bg-secondary hover:text-white" onClick={() => fileInputRef.current?.click()}>
+          <Button variant="outline" className="border-border hover:bg-secondary hover:text-white" disabled={isUploading} onClick={() => fileInputRef.current?.click()}>
-            <Upload size={16} className="mr-2" /> Bulk Register CSV
+            {isUploading ? <RefreshCw size={16} className="mr-2 animate-spin" /> : <Upload size={16} className="mr-2" />} 
+            {isUploading ? "Uploading..." : "Bulk Register CSV"}
           </Button>
           <Button variant="outline" className="border-border hover:bg-secondary hover:text-white" onClick={downloadTemplate}>
             <Download size={16} className="mr-2" /> Download Template
@@ -236,7 +240,9 @@ export default function StudentsPage() {
                         {TIER_LABEL[s.tier] || s.tier}
                       </Badge>
                     </td>
-                    <td className="px-6 py-4 font-medium">{s.target_exam.replace("_", " ")}</td>
+                    <td className="px-6 py-4 font-medium">
+                      {s.target_exam === "JEE_Main" ? "JEE" : s.target_exam.replace("_", " ")}
+                    </td>
                     <td className="px-6 py-4 font-mono">{s.total_tests}</td>
                     <td className="px-6 py-4">
                       <span className={`font-bold ${s.avg_accuracy >= 80 ? "text-green-500" : s.avg_accuracy >= 60 ? "text-yellow-500" : "text-muted-foreground"}`}>

src/app/checkout/page.tsx

@@ -64,7 +64,7 @@ function CheckoutContent() {
     }
   }, [userId, userLoading, router, tier])
 
-  const amount = tier === "Al_Coach" ? 11999 : 3499
+  const amount = tier === "AI Coach" ? 11999 : 3499
 
   const handlePayment = async () => {
     if (!address.trim() || !phone.trim() || phone.length < 10) {

src/app/dashboard/layout.tsx

@@ -350,7 +350,7 @@ export default function DashboardLayout({ children }: { children: ReactNode }) {
                 <div className="flex-1 min-w-0">
                   <p className="text-sm font-bold leading-none truncate">{user ? cleanDisplayName(user.name).split(" ")[0] : "Loading..."}</p>
                   <div className="mt-1">
-                    <TierBadge tier={user ? (user.tier === "Al_Coach" ? "AI Coach" : user.tier === "Pro" ? "Pro" : "Free") : "Free"} />
+                    <TierBadge tier={user ? (user.tier === "AI Coach" ? "AI Coach" : user.tier === "Pro" ? "Pro" : "Free") : "Free"} />
                   </div>
                 </div>
               </div>

src/app/dashboard/page.tsx

@@ -48,7 +48,7 @@ export default function DashboardPage() {
     const rank = isNew ? "#--" : `#${userStats?.city_rank || 1} / ${userStats?.city_total || 50}`
     
     const target = user?.target_exam === "NEET" ? "NEET" : "JEE"
-    const plan = user?.tier === "Al_Coach" ? "AI Coach" : user?.tier || "Free"
+    const plan = user?.tier === "AI Coach" ? "AI Coach" : user?.tier || "Free"
     const name = user?.name || "Student"
     const date = new Intl.DateTimeFormat('en-IN', {
       dateStyle: 'medium',

src/app/onboarding/page.tsx

@@ -33,9 +33,9 @@ const AI_COACH_FEATURES = [
 
 export default function OnboardingPage() {
   const router = useRouter();
-  const [selecting, setSelecting] = useState<"Pro" | "Al_Coach" | null>(null);
+  const [selecting, setSelecting] = useState<"Pro" | "AI Coach" | null>(null);
 
-  const handleSelect = async (plan: "Pro" | "Al_Coach") => {
+  const handleSelect = async (plan: "Pro" | "AI Coach") => {
     setSelecting(plan);
     // Save chosen plan preference to localStorage so dashboard can read it
     if (typeof window !== "undefined") {
@@ -165,7 +165,7 @@ export default function OnboardingPage() {
                 background:
                   "linear-gradient(135deg, rgba(12,96,96,0.5) 0%, rgba(12,96,96,0.08) 100%)",
               }}
-              onClick={() => !selecting && handleSelect("Al_Coach")}
+              onClick={() => !selecting && handleSelect("AI Coach")}
             >
               {/* Most Popular Badge */}
               <div className="absolute -top-4 left-1/2 -translate-x-1/2 z-10 inline-flex items-center gap-1.5 px-4 py-1.5 rounded-full bg-[var(--cyan-ai)] text-black text-xs font-black uppercase tracking-wider shadow-[0_0_20px_-3px_var(--cyan-ai)]">
@@ -201,12 +201,12 @@ export default function OnboardingPage() {
                 <button
                   onClick={(e) => {
                     e.stopPropagation();
-                    if (!selecting) handleSelect("Al_Coach");
+                    if (!selecting) handleSelect("AI Coach");
                   }}
                   disabled={!!selecting}
                   className="w-full h-12 rounded-xl bg-[var(--cyan-ai)] text-black font-bold text-base hover:bg-[var(--cyan-ai-80)] transition-all duration-300 shadow-[0_0_20px_-5px_rgba(12,96,96,0.5)] hover:shadow-[0_0_30px_-3px_rgba(12,96,96,0.8)] hover:-translate-y-0.5 disabled:opacity-70 disabled:cursor-not-allowed flex items-center justify-center gap-2"
                 >
-                  {selecting === "Al_Coach" ? (
+                  {selecting === "AI Coach" ? (
                     <>
                       <span className="size-4 border-2 border-black/30 border-t-black rounded-full animate-spin" />
                       Starting Trial…

src/app/upgrade/page.tsx

@@ -87,7 +87,7 @@ export default function UpgradePage() {
           </div>
           <Button 
             className="w-full font-bold text-lg rounded-2xl h-12 bg-[var(--cyan-ai)] text-black hover:bg-[var(--cyan-ai-80)] transition-all" 
-            onClick={() => handleUpgrade("Al_Coach")}
+            onClick={() => handleUpgrade("AI Coach")}
             disabled={userLoading}
           >
             {userLoading ? <Loader2 className="animate-spin" /> : "Get AI Coach"}

src/components/AI/ProgressShare.tsx

@@ -15,7 +15,7 @@ export function ProgressShare() {
   const accuracy = "85"
   const name = user?.name || "Student"
   const target = user?.target_exam === "NEET" ? "NEET" : "JEE"
-  const plan = user?.tier === "Al_Coach" ? "AI Coach" : user?.tier || "Free"
+  const plan = user?.tier === "AI Coach" ? "AI Coach" : user?.tier || "Free"
   const imageUrl = `/api/og/progress?streak=${streak}&accuracy=${accuracy}&name=${encodeURIComponent(name)}&target=${target}&plan=${encodeURIComponent(plan)}`
 
   const handleDownload = async () => {
@@ -97,7 +97,7 @@ export function ProgressShare() {
             <div className="mt-auto flex justify-between items-end w-full pt-4">
               <div className="text-left">
                 <div className="text-sm font-bold text-white">{name}</div>
-                <div className="text-[10px] text-white/70 mt-0.5">{user?.tier === "Al_Coach" ? "AI Coach Plan" : `${user?.tier || "Free"} Plan`}</div>
+                <div className="text-[10px] text-white/70 mt-0.5">{user?.tier === "AI Coach" ? "AI Coach Plan" : `${user?.tier || "Free"} Plan`}</div>
                 <div className="text-[10px] text-[var(--cyan-ai)]">{user?.target_exam === "NEET" ? "NEET Aspirant" : "JEE Aspirant"}</div>
               </div>
               <div className="text-right">

src/hooks/useActiveUser.ts

@@ -14,7 +14,7 @@ export interface UserProfile {
   school: string | null;
   city: string;
   state: string;
-  tier: "Free" | "Pro" | "Al_Coach";
+  tier: "Free" | "Pro" | "AI Coach";
   streak_count: number;
   longest_streak: number;
   active_session_token?: string;
@@ -48,14 +48,14 @@ export function computeTrialInfo(user: UserProfile | null, globalSettings: any):
   trialDayNumber: number;       // 1-based current day in trial
   trialDaysRemaining: number;   // days left (0 if expired)
   trialTotalDays: number;
-  effectiveTier: "Free" | "Pro" | "Al_Coach";
+  effectiveTier: "Free" | "Pro" | "AI Coach";
 } {
   const defaultResult = {
     isTrialActive: false,
     trialDayNumber: 0,
     trialDaysRemaining: 0,
     trialTotalDays: 0,
-    effectiveTier: (user?.tier ?? "Free") as "Free" | "Pro" | "Al_Coach",
+    effectiveTier: (user?.tier ?? "Free") as "Free" | "Pro" | "AI Coach",
   };
 
   if (!user || !globalSettings) return defaultResult;
@@ -106,7 +106,7 @@ export function computeTrialInfo(user: UserProfile | null, globalSettings: any):
     trialDaysRemaining,
     trialTotalDays: trialDays,
     effectiveTier: isTrialActive
-      ? ((globalSettings.trial_tier as "Pro" | "Al_Coach") ?? "Al_Coach")
+      ? ((globalSettings.trial_tier as "Pro" | "AI Coach") ?? "AI Coach")
       : "Free",
   };
 }
@@ -311,14 +311,14 @@ export function useActiveUser() {
       case "weekly-test-series":
       case "full-length-mock-tests":
       case "previous-year-papers":
-      case "detailed-performance-analytics":
       case "chapter-wise-progress-tracking":
       case "doubt-resolution-community":
       case "parent-dashboard":
       case "offline-mode":
       case "pdf-export":
-        return tier === "Pro" || tier === "Al_Coach";
+        return tier === "Pro" || tier === "AI Coach";
 
+      case "detailed-performance-analytics":
       case "ai-coach-custom-schedules":
       case "personalized-study-plan":
       case "ai-tutor-doubt-resolution":
@@ -327,7 +327,7 @@ export function useActiveUser() {
       case "ai-tutor-chat":
       case "college-predictor":
       case "exam-day-strategy":
-        return tier === "Al_Coach";
+        return tier === "AI Coach";
 
       default:
         // Free tier features: DPS (1/day), basic dashboard, basic streak tracking, leaderboard