feat: Add photo management features, duplicate detection, attempt limits, and admin deletion

- Add duplicate photo detection (file hash and URL checking)
- Add max attempts per photo with UI counter
- Simplify penalty system (auto-enable when points > 0)
- Prevent scores from going below 0
- Add admin photo deletion functionality
- Improve navigation with always-visible logout
- Prevent users from guessing their own photos

app/api/profile/change-password/route.ts

@@ -0,0 +1,53 @@
+import { NextRequest, NextResponse } from "next/server"
+import { auth } from "@/lib/auth"
+import { prisma } from "@/lib/prisma"
+import bcrypt from "bcryptjs"
+import { hashPassword } from "@/lib/utils"
+
+export async function POST(req: NextRequest) {
+  try {
+    const session = await auth()
+
+    if (!session) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
+    }
+
+    const { currentPassword, newPassword } = await req.json()
+
+    if (!currentPassword || !newPassword) {
+      return NextResponse.json(
+        { error: "Current password and new password are required" },
+        { status: 400 }
+      )
+    }
+
+    const user = await prisma.user.findUnique({
+      where: { id: session.user.id },
+    })
+
+    if (!user) {
+      return NextResponse.json({ error: "User not found" }, { status: 404 })
+    }
+
+    const isValid = await bcrypt.compare(currentPassword, user.passwordHash)
+
+    if (!isValid) {
+      return NextResponse.json({ error: "Current password is incorrect" }, { status: 400 })
+    }
+
+    const newPasswordHash = await hashPassword(newPassword)
+
+    await prisma.user.update({
+      where: { id: session.user.id },
+      data: { passwordHash: newPasswordHash },
+    })
+
+    return NextResponse.json({ success: true })
+  } catch (error) {
+    console.error("Error changing password:", error)
+    return NextResponse.json(
+      { error: "Internal server error" },
+      { status: 500 }
+    )
+  }
+}