Add styled notification emails and round-attached notifications

- Add 15+ styled email templates matching existing invite email design
- Wire up notification triggers in all routers (assignment, round, project, mentor, application, onboarding)
- Add test email button for each notification type in admin settings
- Add round-attached notifications: admins can configure which notification to send when projects enter a round
- Fall back to status-based notifications when round has no configured notification

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/server/routers/notification.ts

@@ -15,6 +15,7 @@ import {
   NotificationIcons,
   NotificationPriorities,
 } from '../services/in-app-notification'
+import { sendStyledNotificationEmail, NOTIFICATION_EMAIL_TEMPLATES } from '@/lib/email'
 
 export const notificationRouter = router({
   /**
@@ -218,4 +219,146 @@ export const notificationRouter = router({
       byPriority: byPriority.map((p) => ({ priority: p.priority, count: p._count })),
     }
   }),
+
+  /**
+   * Send a test notification email to the current admin
+   */
+  sendTestEmail: adminProcedure
+    .input(z.object({ notificationType: z.string() }))
+    .mutation(async ({ ctx, input }) => {
+      const { notificationType } = input
+
+      // Check if this notification type has a styled template
+      const hasStyledTemplate = notificationType in NOTIFICATION_EMAIL_TEMPLATES
+
+      // Get setting for label
+      const setting = await ctx.prisma.notificationEmailSetting.findUnique({
+        where: { notificationType },
+      })
+
+      // Sample data for test emails based on category
+      const sampleData: Record<string, Record<string, unknown>> = {
+        // Team notifications
+        ADVANCED_SEMIFINAL: {
+          projectName: 'Ocean Cleanup Initiative',
+          programName: 'Monaco Ocean Protection Challenge 2026',
+          nextSteps: 'Prepare your presentation for the semi-final round.',
+        },
+        ADVANCED_FINAL: {
+          projectName: 'Ocean Cleanup Initiative',
+          programName: 'Monaco Ocean Protection Challenge 2026',
+          nextSteps: 'Get ready for the final presentation in Monaco.',
+        },
+        MENTOR_ASSIGNED: {
+          projectName: 'Ocean Cleanup Initiative',
+          mentorName: 'Dr. Marine Expert',
+          mentorBio: 'Expert in marine conservation with 20 years of experience.',
+        },
+        NOT_SELECTED: {
+          projectName: 'Ocean Cleanup Initiative',
+          roundName: 'Semi-Final Round',
+        },
+        WINNER_ANNOUNCEMENT: {
+          projectName: 'Ocean Cleanup Initiative',
+          awardName: 'Grand Prize',
+          prizeDetails: '€50,000 and mentorship program',
+        },
+
+        // Jury notifications
+        ASSIGNED_TO_PROJECT: {
+          projectName: 'Ocean Cleanup Initiative',
+          roundName: 'Semi-Final Round',
+          deadline: 'Friday, March 15, 2026',
+        },
+        BATCH_ASSIGNED: {
+          projectCount: 5,
+          roundName: 'Semi-Final Round',
+          deadline: 'Friday, March 15, 2026',
+        },
+        ROUND_NOW_OPEN: {
+          roundName: 'Semi-Final Round',
+          projectCount: 12,
+          deadline: 'Friday, March 15, 2026',
+        },
+        REMINDER_24H: {
+          pendingCount: 3,
+          roundName: 'Semi-Final Round',
+          deadline: 'Tomorrow at 5:00 PM',
+        },
+        REMINDER_1H: {
+          pendingCount: 2,
+          roundName: 'Semi-Final Round',
+          deadline: 'Today at 5:00 PM',
+        },
+        AWARD_VOTING_OPEN: {
+          awardName: 'Innovation Award',
+          finalistCount: 6,
+          deadline: 'Friday, March 15, 2026',
+        },
+
+        // Mentor notifications
+        MENTEE_ASSIGNED: {
+          projectName: 'Ocean Cleanup Initiative',
+          teamLeadName: 'John Smith',
+          teamLeadEmail: 'john@example.com',
+        },
+        MENTEE_ADVANCED: {
+          projectName: 'Ocean Cleanup Initiative',
+          roundName: 'Semi-Final Round',
+          nextRoundName: 'Final Round',
+        },
+        MENTEE_WON: {
+          projectName: 'Ocean Cleanup Initiative',
+          awardName: 'Innovation Award',
+        },
+
+        // Admin notifications
+        NEW_APPLICATION: {
+          projectName: 'New Ocean Project',
+          applicantName: 'Jane Doe',
+          applicantEmail: 'jane@example.com',
+          programName: 'Monaco Ocean Protection Challenge 2026',
+        },
+        FILTERING_COMPLETE: {
+          roundName: 'Initial Review',
+          passedCount: 45,
+          flaggedCount: 12,
+          filteredCount: 8,
+        },
+        FILTERING_FAILED: {
+          roundName: 'Initial Review',
+          error: 'Connection timeout',
+        },
+      }
+
+      const metadata = sampleData[notificationType] || {}
+      const label = setting?.label || notificationType
+
+      try {
+        await sendStyledNotificationEmail(
+          ctx.user.email,
+          ctx.user.name || 'Admin',
+          notificationType,
+          {
+            title: `[TEST] ${label}`,
+            message: `This is a test email for the "${label}" notification type.`,
+            linkUrl: `${process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'}/admin/settings`,
+            linkLabel: 'Back to Settings',
+            metadata,
+          }
+        )
+
+        return {
+          success: true,
+          message: `Test email sent to ${ctx.user.email}`,
+          hasStyledTemplate,
+        }
+      } catch (error) {
+        return {
+          success: false,
+          message: error instanceof Error ? error.message : 'Failed to send test email',
+          hasStyledTemplate,
+        }
+      }
+    }),
 })