feat(email): export send attempt metadata

Add content-free provider delivery history to encrypted and daily owner exports, exclude payload hashes, and lock in tenant-safe hard-delete cascades.

JobTrackerApi/Controllers/BackupController.cs

@@ -5,6 +5,7 @@ using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
 using JobTrackerApi.Data;
+using JobTrackerApi.Models;
 
 namespace JobTrackerApi.Controllers
 {
@@ -73,6 +74,21 @@ namespace JobTrackerApi.Controllers
                 .Where(e => jobIds.Contains(e.JobApplicationId))
                 .OrderBy(e => e.At)
                 .ToListAsync(cancellationToken);
+            var emailSendAttempts = await _db.EmailSendAttempts.AsNoTracking()
+                .Where(attempt => jobIds.Contains(attempt.JobApplicationId))
+                .OrderBy(attempt => attempt.CreatedAtUtc)
+                .Select(attempt => new EmailSendAttemptExport(
+                    attempt.Id,
+                    attempt.JobApplicationId,
+                    attempt.Provider,
+                    attempt.ClientRequestId,
+                    attempt.Status,
+                    attempt.ProviderMessageId,
+                    attempt.FailureCategory,
+                    attempt.CreatedAtUtc,
+                    attempt.StartedAtUtc,
+                    attempt.CompletedAtUtc))
+                .ToListAsync(cancellationToken);
             var rules = await _db.RuleSettings.AsNoTracking().FirstOrDefaultAsync(cancellationToken);
 
             return new
@@ -82,6 +98,7 @@ namespace JobTrackerApi.Controllers
                 Correspondence = correspondence,
                 Attachments = attachments,
                 Events = events,
+                EmailSendAttempts = emailSendAttempts,
                 Rules = rules
             };
         }

JobTrackerApi/Models/EmailSendAttempt.cs

@@ -25,3 +25,15 @@ public sealed class EmailSendAttempt
     public DateTime? StartedAtUtc { get; set; }
     public DateTime? CompletedAtUtc { get; set; }
 }
+
+public sealed record EmailSendAttemptExport(
+    Guid Id,
+    int JobApplicationId,
+    string Provider,
+    string ClientRequestId,
+    string Status,
+    string? ProviderMessageId,
+    string? FailureCategory,
+    DateTime CreatedAtUtc,
+    DateTime? StartedAtUtc,
+    DateTime? CompletedAtUtc);

JobTrackerApi/Services/DailyExportHostedService.cs

@@ -2,6 +2,7 @@ using System.Security.Cryptography;
 using System.Text;
 using System.Text.Json;
 using JobTrackerApi.Data;
+using JobTrackerApi.Models;
 using Microsoft.EntityFrameworkCore;
 
 namespace JobTrackerApi.Services;
@@ -61,6 +62,21 @@ public sealed class DailyExportHostedService(
             Correspondence = await db.Correspondences.AsNoTracking().Where(message => jobIds.Contains(message.JobApplicationId)).OrderBy(message => message.Date).ToListAsync(cancellationToken),
             Attachments = await db.Attachments.AsNoTracking().Where(attachment => jobIds.Contains(attachment.JobApplicationId)).OrderBy(attachment => attachment.UploadDate).ToListAsync(cancellationToken),
             Events = await db.JobEvents.AsNoTracking().Where(jobEvent => jobIds.Contains(jobEvent.JobApplicationId)).OrderBy(jobEvent => jobEvent.At).ToListAsync(cancellationToken),
+            EmailSendAttempts = await db.EmailSendAttempts.AsNoTracking()
+                .Where(attempt => jobIds.Contains(attempt.JobApplicationId))
+                .OrderBy(attempt => attempt.CreatedAtUtc)
+                .Select(attempt => new EmailSendAttemptExport(
+                    attempt.Id,
+                    attempt.JobApplicationId,
+                    attempt.Provider,
+                    attempt.ClientRequestId,
+                    attempt.Status,
+                    attempt.ProviderMessageId,
+                    attempt.FailureCategory,
+                    attempt.CreatedAtUtc,
+                    attempt.StartedAtUtc,
+                    attempt.CompletedAtUtc))
+                .ToListAsync(cancellationToken),
             Rules = await RulesEngine.GetSettings(db, cancellationToken),
         };