feat: forgot password flow, member page fixes, country name display

Password reset:
- /forgot-password page: enter email, receive reset link via email
- /reset-password?token=xxx page: set new password with validation
- user.requestPasswordReset: generates token, sends styled email
- user.resetPassword: validates token, hashes new password
- Does NOT trigger re-onboarding — only resets the password
- 30-minute token expiry, cleared after use
- Added passwordResetToken/passwordResetExpiresAt to User model

Member detail page fixes:
- Hide "Expertise & Capacity" card for applicants/audience roles
- Show country names with flag emojis instead of raw ISO codes
- Login "Forgot password?" now links to /forgot-password page

Project detail page:
- Team member details show full country names with flags

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/(admin)/admin/projects/[id]/page.tsx

@@ -77,6 +77,7 @@ import {
 } from 'lucide-react'
 import { toast } from 'sonner'
 import { formatDateOnly } from '@/lib/utils'
+import { getCountryName, getCountryFlag } from '@/lib/countries'
 
 interface PageProps {
   params: Promise<{ id: string }>
@@ -517,7 +518,11 @@ function ProjectDetailContent({ projectId }: { projectId: string }) {
                 const isLastLead =
                   member.role === 'LEAD' &&
                   project.teamMembers.filter((m: { role: string }) => m.role === 'LEAD').length <= 1
-                const details = [member.user.nationality, member.user.institution, member.user.country].filter(Boolean)
+                const details = [
+                  member.user.nationality ? `${getCountryFlag(member.user.nationality)} ${getCountryName(member.user.nationality)}` : null,
+                  member.user.institution,
+                  member.user.country && member.user.country !== member.user.nationality ? `${getCountryFlag(member.user.country)} ${getCountryName(member.user.country)}` : null,
+                ].filter(Boolean)
                 return (
                   <div key={member.id} className="flex items-center gap-3 p-3 rounded-lg border">
                     {member.role === 'LEAD' ? (