Jury dashboard compact layout, assignment redesign, auth fixes

- Jury dashboard: collapse zero-assignment state into single welcome card
  with inline quick actions; merge completion bar into stats row; tighten spacing
- Manual assignment: replace tiny Dialog modal with inline collapsible section
  featuring searchable juror combobox and multi-select project list with bulk assign
- Fix applicant invite URL path (/auth/accept-invite -> /accept-invite)
- Add APPLICANT role redirect to /my-submission from root page
- Add Applicant label to accept-invite role display
- Fix a/an grammar in invitation emails and accept-invite page
- Set-password page: use MOPC logo instead of lock icon
- Notification bell: remove filter tabs, always show all notifications

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

src/lib/email.ts

@@ -291,11 +291,12 @@ function getGenericInvitationTemplate(
   role: string
 ): EmailTemplate {
   const roleLabel = role === 'JURY_MEMBER' ? 'jury member' : role.toLowerCase().replace('_', ' ')
+  const article = /^[aeiou]/i.test(roleLabel) ? 'an' : 'a'
   const greeting = name ? `Hello ${name},` : 'Hello,'
 
   const content = `
     ${sectionTitle(greeting)}
-    ${paragraph(`You've been invited to join the Monaco Ocean Protection Challenge platform as a <strong>${roleLabel}</strong>.`)}
+    ${paragraph(`You've been invited to join the Monaco Ocean Protection Challenge platform as ${article} <strong>${roleLabel}</strong>.`)}
     ${paragraph('Click the button below to set up your account and get started.')}
     ${ctaButton(url, 'Accept Invitation')}
     ${infoBox('This link will expire in 7 days.', 'info')}
@@ -307,7 +308,7 @@ function getGenericInvitationTemplate(
     text: `
 ${greeting}
 
-You've been invited to join the Monaco Ocean Protection Challenge platform as a ${roleLabel}.
+You've been invited to join the Monaco Ocean Protection Challenge platform as ${article} ${roleLabel}.
 
 Click the link below to set up your account and get started: