feat: round finalization with ranking-based outcomes + award pool notifications

- processRoundClose EVALUATION uses ranking scores + advanceMode config
  (threshold vs count) to auto-set proposedOutcome instead of defaulting all to PASSED
- Advancement emails generate invite tokens for passwordless users with
  "Create Your Account" CTA; rejection emails have no link
- Finalization UI shows account stats (invite vs dashboard link counts)
- Fixed getFinalizationSummary ranking query (was using non-existent rankingsJson)
- New award pool notification system: getAwardSelectionNotificationTemplate email,
  notifyEligibleProjects mutation with invite token generation,
  "Notify Pool" button on award detail page with custom message dialog

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

src/components/shared/user-avatar.tsx

@@ -11,7 +11,7 @@ type UserAvatarProps = {
     email?: string | null
     profileImageKey?: string | null
   }
-  size?: 'xs' | 'sm' | 'md' | 'lg' | 'xl'
+  size?: 'xs' | 'sm' | 'md' | 'lg' | 'xl' | '2xl'
   className?: string
   showEditOverlay?: boolean
   avatarUrl?: string | null
@@ -23,6 +23,7 @@ const sizeClasses = {
   md: 'h-10 w-10',
   lg: 'h-12 w-12',
   xl: 'h-16 w-16',
+  '2xl': 'h-24 w-24',
 }
 
 const textSizeClasses = {
@@ -31,6 +32,7 @@ const textSizeClasses = {
   md: 'text-sm',
   lg: 'text-base',
   xl: 'text-lg',
+  '2xl': 'text-2xl',
 }
 
 const iconSizeClasses = {
@@ -39,6 +41,7 @@ const iconSizeClasses = {
   md: 'h-4 w-4',
   lg: 'h-5 w-5',
   xl: 'h-6 w-6',
+  '2xl': 'h-8 w-8',
 }
 
 export function UserAvatar({