feat: admin UX improvements — notify buttons, eval config, round finalization

Custom body support for advancement/rejection notification emails, evaluation
config toggle fix, user actions improvements, round finalization with reorder
support, project detail page enhancements, award pool duplicate prevention.

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

src/server/services/round-finalization.ts

@@ -10,12 +10,11 @@
 import type { PrismaClient, ProjectRoundStateValue, RoundType, Prisma } from '@prisma/client'
 import { transitionProject, isTerminalState } from './round-engine'
 import { logAudit } from '@/server/utils/audit'
-import {
-  sendStyledNotificationEmail,
-  getRejectionNotificationTemplate,
-} from '@/lib/email'
+import { getRejectionNotificationTemplate } from '@/lib/email'
 import { createBulkNotifications } from '../services/in-app-notification'
 import { generateInviteToken, getInviteExpiryMs } from '@/server/utils/invite'
+import { sendBatchNotifications } from './notification-sender'
+import type { NotificationItem } from './notification-sender'
 
 // ─── Types ──────────────────────────────────────────────────────────────────
 
@@ -724,6 +723,7 @@ export async function confirmFinalization(
 
     const advancedUserIds = new Set<string>()
     const rejectedUserIds = new Set<string>()
+    const notificationItems: NotificationItem[] = []
 
     for (const prs of finalizedStates) {
       type Recipient = { email: string; name: string | null; userId: string | null }
@@ -748,53 +748,56 @@ export async function confirmFinalization(
       }
 
       for (const recipient of recipients) {
-        try {
-          if (prs.state === 'PASSED') {
-            // Build account creation URL for passwordless users
-            const token = recipient.userId ? inviteTokenMap.get(recipient.userId) : undefined
-            const accountUrl = token ? `/accept-invite?token=${token}` : undefined
+        if (prs.state === 'PASSED') {
+          const token = recipient.userId ? inviteTokenMap.get(recipient.userId) : undefined
+          const accountUrl = token ? `/accept-invite?token=${token}` : undefined
 
-            await sendStyledNotificationEmail(
-              recipient.email,
-              recipient.name || '',
-              'ADVANCEMENT_NOTIFICATION',
-              {
-                title: 'Your project has advanced!',
-                message: '',
-                linkUrl: accountUrl || '/applicant',
-                metadata: {
-                  projectName: prs.project.title,
-                  fromRoundName: round.name,
-                  toRoundName: targetRoundName,
-                  customMessage: options.advancementMessage || undefined,
-                  accountUrl,
-                },
+          notificationItems.push({
+            email: recipient.email,
+            name: recipient.name || '',
+            type: 'ADVANCEMENT_NOTIFICATION',
+            context: {
+              title: 'Your project has advanced!',
+              message: '',
+              linkUrl: accountUrl || '/applicant',
+              metadata: {
+                projectName: prs.project.title,
+                fromRoundName: round.name,
+                toRoundName: targetRoundName,
+                customMessage: options.advancementMessage || undefined,
+                accountUrl,
               },
-            )
-          } else {
-            await sendStyledNotificationEmail(
-              recipient.email,
-              recipient.name || '',
-              'REJECTION_NOTIFICATION',
-              {
-                title: `Update on your application: "${prs.project.title}"`,
-                message: '',
-                metadata: {
-                  projectName: prs.project.title,
-                  roundName: round.name,
-                  customMessage: options.rejectionMessage || undefined,
-                },
+            },
+            projectId: prs.projectId,
+            userId: recipient.userId || undefined,
+            roundId: round.id,
+          })
+        } else {
+          notificationItems.push({
+            email: recipient.email,
+            name: recipient.name || '',
+            type: 'REJECTION_NOTIFICATION',
+            context: {
+              title: `Update on your application: "${prs.project.title}"`,
+              message: '',
+              metadata: {
+                projectName: prs.project.title,
+                roundName: round.name,
+                customMessage: options.rejectionMessage || undefined,
               },
-            )
-          }
-          emailsSent++
-        } catch (err) {
-          console.error(`[Finalization] Email failed for ${recipient.email}:`, err)
-          emailsFailed++
+            },
+            projectId: prs.projectId,
+            userId: recipient.userId || undefined,
+            roundId: round.id,
+          })
         }
       }
     }
 
+    const batchResult = await sendBatchNotifications(notificationItems)
+    emailsSent = batchResult.sent
+    emailsFailed = batchResult.failed
+
     // Create in-app notifications
     if (advancedUserIds.size > 0) {
       void createBulkNotifications({