Implement Phase 2: end-to-end import system

Complete the import flow from file upload through duplicate resolution
to transaction creation. Previously, ResolveDuplicatesAsync was a stub
that only incremented counters, FileWatcherService detected files but
didn't process them, and ImportsView.vue ignored the API response.

Backend:
- Add ParsedDataJson column to ImportBatch to persist parsed data
  between upload and confirm steps
- Rewrite ImportService.ResolveDuplicatesAsync to deserialize parsed
  transactions and create/merge/skip based on user decisions, with
  payee matching, fingerprinting, and account balance updates
- Add GetBatchesAsync for import history
- Complete FileWatcherService: wait for file ready, resolve account by
  filename, call UploadAsync, send SignalR notification, archive file
- Add GET /api/imports/batches endpoint

Frontend:
- Create imports API service (frontend/src/services/imports.ts)
- Add ImportBatch, DuplicateResolution types
- Rewrite ImportsView.vue with 3-step Vuetify stepper wizard:
  upload, review with duplicate handling, completion summary,
  plus import history table

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

frontend/src/services/imports.ts

@@ -0,0 +1,21 @@
+import api from './api'
+import type { ImportUploadResponse, ImportBatch, ResolveDuplicatesRequest } from '@/types'
+
+export const importsApi = {
+  upload: (accountId: string, file: File) => {
+    const formData = new FormData()
+    formData.append('file', file)
+    return api.post<ImportUploadResponse>(`/imports/upload?accountId=${accountId}`, formData, {
+      headers: { 'Content-Type': 'multipart/form-data' }
+    })
+  },
+
+  confirmBatch: (batchId: string) =>
+    api.post<ImportBatch>(`/imports/batches/${batchId}/confirm`),
+
+  resolveDuplicates: (batchId: string, request: ResolveDuplicatesRequest) =>
+    api.post<ImportBatch>(`/imports/batches/${batchId}/resolve-duplicates`, request),
+
+  getBatches: () =>
+    api.get<ImportBatch[]>('/imports/batches'),
+}

frontend/src/types/index.ts

@@ -235,3 +235,29 @@ export interface DuplicateMatch {
   confidence: number
   matchReason: string
 }
+
+export interface ImportBatch {
+  id: string
+  accountId: string
+  accountName: string
+  fileName: string
+  fileType: string
+  totalCount: number
+  importedCount: number
+  duplicateCount: number
+  skippedCount: number
+  mergedCount: number
+  status: string
+  importedAt: string
+}
+
+export type DuplicateAction = 'Import' | 'Skip' | 'Merge'
+
+export interface DuplicateResolution {
+  index: number
+  action: DuplicateAction
+}
+
+export interface ResolveDuplicatesRequest {
+  resolutions: DuplicateResolution[]
+}

frontend/src/views/imports/ImportsView.vue

@@ -1,42 +1,348 @@
 <template>
   <div>
     <h1 class="text-h4 mb-4">Import Transactions</h1>
-    <v-card>
-      <v-card-text>
-        <v-file-input v-model="file" label="Select file to import" accept=".ofx,.qfx,.csv,.qif" prepend-icon="mdi-upload" />
-        <v-select v-model="selectedAccount" label="Target Account" :items="accounts" item-title="name" item-value="id" />
-        <v-btn color="primary" :disabled="!file || !selectedAccount" @click="uploadFile" :loading="uploading">Import</v-btn>
-      </v-card-text>
+
+    <v-card class="mb-6">
+      <v-stepper v-model="step" :items="['Upload', 'Review', 'Complete']" alt-labels>
+        <template v-slot:item.1>
+          <v-card flat>
+            <v-card-text>
+              <v-row>
+                <v-col cols="12" md="6">
+                  <v-select
+                    v-model="selectedAccount"
+                    label="Target Account"
+                    :items="accounts"
+                    item-title="name"
+                    item-value="id"
+                    :rules="[v => !!v || 'Account is required']"
+                  />
+                </v-col>
+                <v-col cols="12" md="6">
+                  <v-file-input
+                    v-model="files"
+                    label="Select file to import"
+                    accept=".ofx,.qfx,.csv,.qif"
+                    prepend-icon="mdi-file-upload"
+                    show-size
+                  />
+                </v-col>
+              </v-row>
+            </v-card-text>
+            <v-card-actions>
+              <v-spacer />
+              <v-btn
+                color="primary"
+                :disabled="!files?.length || !selectedAccount"
+                :loading="uploading"
+                @click="uploadFile"
+                prepend-icon="mdi-upload"
+              >
+                Upload & Preview
+              </v-btn>
+            </v-card-actions>
+          </v-card>
+        </template>
+
+        <template v-slot:item.2>
+          <v-card flat>
+            <v-card-text v-if="uploadResult">
+              <div class="d-flex ga-3 mb-4">
+                <v-chip color="primary" variant="elevated">
+                  {{ uploadResult.totalTransactions }} Total
+                </v-chip>
+                <v-chip color="success" variant="elevated">
+                  {{ uploadResult.newTransactions }} New
+                </v-chip>
+                <v-chip v-if="uploadResult.possibleDuplicates > 0" color="warning" variant="elevated">
+                  {{ uploadResult.possibleDuplicates }} Possible Duplicates
+                </v-chip>
+              </div>
+
+              <v-data-table
+                :headers="previewHeaders"
+                :items="previewItems"
+                density="compact"
+                :items-per-page="25"
+              >
+                <template #item.date="{ item }">
+                  {{ formatDate(item.date) }}
+                </template>
+                <template #item.amount="{ item }">
+                  <span :class="item.amount >= 0 ? 'text-success' : 'text-error'" class="font-weight-medium">
+                    {{ formatCurrency(item.amount) }}
+                  </span>
+                </template>
+                <template #item.status="{ item }">
+                  <v-chip
+                    v-if="!item.duplicateMatch"
+                    color="success"
+                    size="small"
+                    variant="flat"
+                  >
+                    New
+                  </v-chip>
+                  <v-chip
+                    v-else
+                    :color="getConfidenceColor(item.duplicateMatch.confidence)"
+                    size="small"
+                    variant="flat"
+                  >
+                    Duplicate ({{ Math.round(item.duplicateMatch.confidence * 100) }}%)
+                  </v-chip>
+                </template>
+                <template #item.matchReason="{ item }">
+                  <span v-if="item.duplicateMatch" class="text-caption text-medium-emphasis">
+                    {{ item.duplicateMatch.matchReason }}
+                  </span>
+                </template>
+                <template #item.action="{ item }">
+                  <v-select
+                    v-if="item.duplicateMatch"
+                    v-model="resolutions[item.index]"
+                    :items="actionOptions"
+                    density="compact"
+                    variant="outlined"
+                    hide-details
+                    style="min-width: 120px"
+                  />
+                  <span v-else class="text-caption text-success">Import</span>
+                </template>
+              </v-data-table>
+            </v-card-text>
+            <v-card-actions>
+              <v-btn variant="text" @click="resetWizard">Back</v-btn>
+              <v-spacer />
+              <v-btn
+                color="primary"
+                :loading="confirming"
+                @click="confirmImport"
+                prepend-icon="mdi-check"
+              >
+                Confirm Import
+              </v-btn>
+            </v-card-actions>
+          </v-card>
+        </template>
+
+        <template v-slot:item.3>
+          <v-card flat>
+            <v-card-text v-if="confirmResult" class="text-center py-8">
+              <v-icon color="success" size="64" class="mb-4">mdi-check-circle</v-icon>
+              <h2 class="text-h5 mb-4">Import Complete</h2>
+              <div class="d-flex justify-center ga-3 mb-4">
+                <v-chip color="success" variant="elevated" size="large">
+                  {{ confirmResult.importedCount }} Imported
+                </v-chip>
+                <v-chip v-if="confirmResult.duplicateCount > 0" color="info" variant="elevated" size="large">
+                  {{ confirmResult.duplicateCount }} Merged
+                </v-chip>
+                <v-chip v-if="confirmResult.skippedCount > 0" color="default" variant="elevated" size="large">
+                  {{ confirmResult.skippedCount }} Skipped
+                </v-chip>
+              </div>
+              <p class="text-body-1 text-medium-emphasis">
+                File: {{ confirmResult.fileName }} | Account: {{ confirmResult.accountName }}
+              </p>
+            </v-card-text>
+            <v-card-actions>
+              <v-spacer />
+              <v-btn color="primary" variant="text" @click="resetWizard" prepend-icon="mdi-upload">
+                Import Another
+              </v-btn>
+            </v-card-actions>
+          </v-card>
+        </template>
+      </v-stepper>
     </v-card>
+
+    <h2 class="text-h5 mb-3">Import History</h2>
+    <v-card>
+      <v-data-table
+        :headers="historyHeaders"
+        :items="batches"
+        :loading="loadingBatches"
+        density="compact"
+        :items-per-page="10"
+        no-data-text="No import history yet"
+      >
+        <template #item.importedAt="{ item }">
+          {{ formatDateTime(item.importedAt) }}
+        </template>
+        <template #item.status="{ item }">
+          <v-chip
+            :color="item.status === 'Confirmed' ? 'success' : item.status === 'Pending' ? 'warning' : 'error'"
+            size="small"
+            variant="flat"
+          >
+            {{ item.status }}
+          </v-chip>
+        </template>
+        <template #item.summary="{ item }">
+          {{ item.importedCount }} imported
+          <span v-if="item.duplicateCount > 0">, {{ item.duplicateCount }} merged</span>
+          <span v-if="item.skippedCount > 0">, {{ item.skippedCount }} skipped</span>
+        </template>
+      </v-data-table>
+    </v-card>
+
+    <v-snackbar v-model="snackbar.show" :color="snackbar.color" :timeout="4000">
+      {{ snackbar.text }}
+    </v-snackbar>
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, onMounted, computed } from 'vue'
 import { useAccountsStore } from '@/stores/accounts'
-import api from '@/services/api'
+import { importsApi } from '@/services/imports'
+import type { ImportUploadResponse, ImportBatch, DuplicateAction } from '@/types'
 
 const accountsStore = useAccountsStore()
-const accounts = ref(accountsStore.accounts)
-const file = ref<File | null>(null)
+const accounts = computed(() => accountsStore.accounts.filter(a => a.isActive && !a.isClosed))
+
+const step = ref(1)
+const files = ref<File[]>([])
 const selectedAccount = ref('')
 const uploading = ref(false)
+const confirming = ref(false)
+const uploadResult = ref<ImportUploadResponse | null>(null)
+const confirmResult = ref<ImportBatch | null>(null)
+const resolutions = ref<Record<number, DuplicateAction>>({})
+const batches = ref<ImportBatch[]>([])
+const loadingBatches = ref(false)
+const snackbar = ref({ show: false, text: '', color: 'success' })
+
+const actionOptions = [
+  { title: 'Skip', value: 'Skip' as DuplicateAction },
+  { title: 'Import', value: 'Import' as DuplicateAction },
+  { title: 'Merge', value: 'Merge' as DuplicateAction },
+]
+
+const previewHeaders = [
+  { title: 'Date', key: 'date', width: '110px' },
+  { title: 'Amount', key: 'amount', align: 'end' as const, width: '110px' },
+  { title: 'Payee', key: 'payeeName' },
+  { title: 'Memo', key: 'memo' },
+  { title: 'Status', key: 'status', width: '140px' },
+  { title: 'Match Reason', key: 'matchReason' },
+  { title: 'Action', key: 'action', width: '140px' },
+]
+
+const historyHeaders = [
+  { title: 'Date', key: 'importedAt', width: '170px' },
+  { title: 'File', key: 'fileName' },
+  { title: 'Type', key: 'fileType', width: '70px' },
+  { title: 'Account', key: 'accountName' },
+  { title: 'Total', key: 'totalCount', align: 'end' as const, width: '80px' },
+  { title: 'Summary', key: 'summary' },
+  { title: 'Status', key: 'status', width: '110px' },
+]
+
+const previewItems = computed(() => {
+  return uploadResult.value?.previews ?? []
+})
 
 onMounted(async () => {
   await accountsStore.fetchAccounts()
-  accounts.value = accountsStore.accounts
+  await loadBatches()
 })
 
 async function uploadFile() {
-  if (!file.value || !selectedAccount.value) return
+  if (!files.value?.length || !selectedAccount.value) return
   uploading.value = true
   try {
-    const formData = new FormData()
-    formData.append('file', file.value)
-    await api.post(`/imports/upload?accountId=${selectedAccount.value}`, formData, { headers: { 'Content-Type': 'multipart/form-data' } })
-    file.value = null
+    const { data } = await importsApi.upload(selectedAccount.value, files.value[0])
+    uploadResult.value = data
+
+    // Set default resolutions for duplicates
+    for (const preview of data.previews) {
+      if (preview.duplicateMatch) {
+        resolutions.value[preview.index] = preview.duplicateMatch.confidence >= 0.85 ? 'Skip' : 'Import'
+      }
+    }
+
+    step.value = 2
+  } catch (err: any) {
+    snackbar.value = {
+      show: true,
+      text: err.response?.data?.error || err.response?.data?.message || 'Upload failed',
+      color: 'error'
+    }
   } finally {
     uploading.value = false
   }
 }
+
+async function confirmImport() {
+  if (!uploadResult.value) return
+  confirming.value = true
+  try {
+    // Build resolution list for all transactions
+    const allResolutions = uploadResult.value.previews.map(p => ({
+      index: p.index,
+      action: (p.duplicateMatch ? resolutions.value[p.index] ?? 'Skip' : 'Import') as DuplicateAction
+    }))
+
+    const { data } = await importsApi.resolveDuplicates(uploadResult.value.batchId, {
+      resolutions: allResolutions
+    })
+
+    confirmResult.value = data
+    step.value = 3
+    await loadBatches()
+
+    snackbar.value = {
+      show: true,
+      text: `Successfully imported ${data.importedCount} transactions`,
+      color: 'success'
+    }
+  } catch (err: any) {
+    snackbar.value = {
+      show: true,
+      text: err.response?.data?.error || err.response?.data?.message || 'Import confirmation failed',
+      color: 'error'
+    }
+  } finally {
+    confirming.value = false
+  }
+}
+
+async function loadBatches() {
+  loadingBatches.value = true
+  try {
+    const { data } = await importsApi.getBatches()
+    batches.value = data
+  } catch {
+    // Silently fail - history is non-critical
+  } finally {
+    loadingBatches.value = false
+  }
+}
+
+function resetWizard() {
+  step.value = 1
+  files.value = []
+  uploadResult.value = null
+  confirmResult.value = null
+  resolutions.value = {}
+}
+
+function getConfidenceColor(confidence: number): string {
+  if (confidence >= 0.85) return 'error'
+  if (confidence >= 0.50) return 'warning'
+  return 'success'
+}
+
+function formatDate(dateStr: string): string {
+  return new Date(dateStr).toLocaleDateString()
+}
+
+function formatDateTime(dateStr: string): string {
+  return new Date(dateStr).toLocaleString()
+}
+
+function formatCurrency(amount: number): string {
+  return new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' }).format(amount)
+}
 </script>

src/Purrse.Api/Controllers/ImportsController.cs

@@ -32,9 +32,13 @@ public class ImportsController : ControllerBase
         => Ok(await _importService.ConfirmBatchAsync(UserId, batchId));
 
     [HttpPost("batches/{batchId}/resolve-duplicates")]
-    public async Task<ActionResult> ResolveDuplicates(Guid batchId, ResolveDuplicatesRequest request)
+    public async Task<ActionResult<ImportBatchResponse>> ResolveDuplicates(Guid batchId, ResolveDuplicatesRequest request)
     {
-        await _importService.ResolveDuplicatesAsync(UserId, batchId, request);
-        return NoContent();
+        var result = await _importService.ResolveDuplicatesAsync(UserId, batchId, request);
+        return Ok(result);
     }
+
+    [HttpGet("batches")]
+    public async Task<ActionResult<List<ImportBatchResponse>>> GetBatches()
+        => Ok(await _importService.GetBatchesAsync(UserId));
 }

src/Purrse.Api/Services/FileWatcherService.cs

@@ -1,16 +1,30 @@
+using Microsoft.AspNetCore.SignalR;
+using Microsoft.EntityFrameworkCore;
+using Purrse.Api.Hubs;
+using Purrse.Core.Interfaces.Services;
+using Purrse.Data;
+
 namespace Purrse.Api.Services;
 
 public class FileWatcherService : BackgroundService
 {
     private readonly IServiceScopeFactory _scopeFactory;
     private readonly ILogger<FileWatcherService> _logger;
+    private readonly IHubContext<NotificationHub> _hubContext;
     private readonly string _importsPath;
     private FileSystemWatcher? _watcher;
 
-    public FileWatcherService(IServiceScopeFactory scopeFactory, ILogger<FileWatcherService> logger, IConfiguration config)
+    private static readonly string[] SupportedExtensions = { ".ofx", ".qfx", ".csv", ".qif" };
+
+    public FileWatcherService(
+        IServiceScopeFactory scopeFactory,
+        ILogger<FileWatcherService> logger,
+        IConfiguration config,
+        IHubContext<NotificationHub> hubContext)
     {
         _scopeFactory = scopeFactory;
         _logger = logger;
+        _hubContext = hubContext;
         _importsPath = config["Imports:WatchPath"] ?? Path.Combine(AppContext.BaseDirectory, "imports");
     }
 
@@ -19,10 +33,15 @@ public class FileWatcherService : BackgroundService
         if (!Directory.Exists(_importsPath))
             Directory.CreateDirectory(_importsPath);
 
+        var archivePath = Path.Combine(_importsPath, "archive");
+        if (!Directory.Exists(archivePath))
+            Directory.CreateDirectory(archivePath);
+
         _watcher = new FileSystemWatcher(_importsPath)
         {
             NotifyFilter = NotifyFilters.FileName | NotifyFilters.CreationTime,
-            EnableRaisingEvents = true
+            EnableRaisingEvents = true,
+            IncludeSubdirectories = false
         };
 
         _watcher.Created += OnFileCreated;
@@ -38,10 +57,109 @@ public class FileWatcherService : BackgroundService
         return Task.CompletedTask;
     }
 
-    private void OnFileCreated(object sender, FileSystemEventArgs e)
+    private async void OnFileCreated(object sender, FileSystemEventArgs e)
     {
-        _logger.LogInformation("New file detected: {FileName}", e.Name);
-        // Files dropped here can be processed by the import service
-        // A SignalR notification would be sent to connected clients
+        try
+        {
+            var extension = Path.GetExtension(e.FullPath).ToLowerInvariant();
+            if (!SupportedExtensions.Contains(extension))
+            {
+                _logger.LogDebug("Ignoring non-supported file: {FileName}", e.Name);
+                return;
+            }
+
+            _logger.LogInformation("New import file detected: {FileName}", e.Name);
+
+            // Wait for file to finish writing
+            await WaitForFileReady(e.FullPath);
+
+            using var scope = _scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<PurrseDbContext>();
+            var importService = scope.ServiceProvider.GetRequiredService<IImportService>();
+
+            // Find the target account by matching filename to account name
+            var fileNameWithoutExt = Path.GetFileNameWithoutExtension(e.Name);
+            var account = await db.Accounts
+                .Where(a => a.IsActive && !a.IsClosed)
+                .FirstOrDefaultAsync(a => a.Name.ToLower() == fileNameWithoutExt!.ToLower());
+
+            // Fall back to first active account
+            account ??= await db.Accounts
+                .Where(a => a.IsActive && !a.IsClosed)
+                .OrderBy(a => a.SortOrder)
+                .FirstOrDefaultAsync();
+
+            if (account == null)
+            {
+                _logger.LogWarning("No active account found for file import: {FileName}", e.Name);
+                return;
+            }
+
+            _logger.LogInformation("Importing {FileName} into account {AccountName} ({AccountId})",
+                e.Name, account.Name, account.Id);
+
+            await using var fileStream = new FileStream(e.FullPath, FileMode.Open, FileAccess.Read, FileShare.Read);
+            var result = await importService.UploadAsync(account.UserId, account.Id, e.Name!, fileStream);
+
+            _logger.LogInformation(
+                "File import complete: {FileName} - {Total} transactions ({New} new, {Duplicates} duplicates)",
+                e.Name, result.TotalTransactions, result.NewTransactions, result.PossibleDuplicates);
+
+            // Send SignalR notification to the account owner
+            await _hubContext.Clients.Group(account.UserId.ToString()).SendAsync("FileImportReady", new
+            {
+                batchId = result.BatchId,
+                fileName = e.Name,
+                accountId = account.Id,
+                accountName = account.Name,
+                totalTransactions = result.TotalTransactions,
+                newTransactions = result.NewTransactions,
+                possibleDuplicates = result.PossibleDuplicates
+            });
+
+            // Archive the processed file
+            ArchiveFile(e.FullPath);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error processing imported file: {FileName}", e.Name);
+        }
+    }
+
+    private static async Task WaitForFileReady(string filePath, int maxRetries = 30, int delayMs = 500)
+    {
+        for (int i = 0; i < maxRetries; i++)
+        {
+            try
+            {
+                using var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.None);
+                return; // File is ready
+            }
+            catch (IOException)
+            {
+                await Task.Delay(delayMs);
+            }
+        }
+
+        throw new IOException($"File {filePath} was not ready after {maxRetries * delayMs}ms");
+    }
+
+    private void ArchiveFile(string filePath)
+    {
+        try
+        {
+            var archivePath = Path.Combine(_importsPath, "archive");
+            var timestamp = DateTime.UtcNow.ToString("yyyyMMdd_HHmmss");
+            var fileName = Path.GetFileName(filePath);
+            var archiveFileName = $"{timestamp}_{fileName}";
+            var destination = Path.Combine(archivePath, archiveFileName);
+
+            File.Move(filePath, destination);
+            _logger.LogInformation("Archived import file to: {ArchivePath}", destination);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Failed to archive file: {FilePath}", filePath);
+        }
     }
 }

src/Purrse.Api/Services/ImportService.cs

@@ -1,3 +1,4 @@
+using System.Text.Json;
 using Microsoft.EntityFrameworkCore;
 using Purrse.Core.DTOs;
 using Purrse.Core.Enums;
@@ -5,6 +6,7 @@ using Purrse.Core.Helpers;
 using Purrse.Core.Interfaces.Services;
 using Purrse.Core.Models;
 using Purrse.Plugins.Abstractions;
+using Purrse.Plugins.Abstractions.Models;
 using Purrse.Data;
 
 namespace Purrse.Api.Services;
@@ -46,7 +48,8 @@ public class ImportService : IImportService
             FileName = fileName,
             FileType = Path.GetExtension(fileName).TrimStart('.').ToUpperInvariant(),
             TotalCount = parseResult.Transactions.Count,
-            Status = ImportStatus.Pending
+            Status = ImportStatus.Pending,
+            ParsedDataJson = JsonSerializer.Serialize(parseResult.Transactions)
         };
 
         var previews = new List<ImportedTransactionPreview>();
@@ -72,37 +75,178 @@ public class ImportService : IImportService
 
     public async Task<ImportBatchResponse> ConfirmBatchAsync(Guid userId, Guid batchId)
     {
-        var batch = await _db.ImportBatches.FirstOrDefaultAsync(b => b.Id == batchId && b.UserId == userId)
+        var batch = await _db.ImportBatches
+            .Include(b => b.Account)
+            .FirstOrDefaultAsync(b => b.Id == batchId && b.UserId == userId)
             ?? throw new KeyNotFoundException("Import batch not found");
 
         batch.Status = ImportStatus.Confirmed;
         await _db.SaveChangesAsync();
 
-        return new ImportBatchResponse(batch.Id, batch.FileName, batch.FileType, batch.TotalCount,
-            batch.ImportedCount, batch.DuplicateCount, batch.SkippedCount, batch.Status.ToString(), batch.ImportedAt);
+        return MapBatchResponse(batch);
     }
 
-    public async Task ResolveDuplicatesAsync(Guid userId, Guid batchId, ResolveDuplicatesRequest request)
+    public async Task<ImportBatchResponse> ResolveDuplicatesAsync(Guid userId, Guid batchId, ResolveDuplicatesRequest request)
     {
-        var batch = await _db.ImportBatches.FirstOrDefaultAsync(b => b.Id == batchId && b.UserId == userId)
+        var batch = await _db.ImportBatches
+            .Include(b => b.Account)
+            .FirstOrDefaultAsync(b => b.Id == batchId && b.UserId == userId)
             ?? throw new KeyNotFoundException("Import batch not found");
 
-        foreach (var resolution in request.Resolutions)
+        if (string.IsNullOrEmpty(batch.ParsedDataJson))
+            throw new InvalidOperationException("No parsed data available for this batch. It may have already been processed.");
+
+        var parsedTransactions = JsonSerializer.Deserialize<List<ParsedTransaction>>(batch.ParsedDataJson)
+            ?? throw new InvalidOperationException("Failed to deserialize parsed data");
+
+        var resolutionMap = request.Resolutions.ToDictionary(r => r.Index, r => r.Action);
+
+        int importedCount = 0;
+        int skippedCount = 0;
+        int mergedCount = 0;
+
+        for (int i = 0; i < parsedTransactions.Count; i++)
         {
-            switch (resolution.Action)
+            var parsed = parsedTransactions[i];
+            var action = resolutionMap.GetValueOrDefault(i, DuplicateAction.Import);
+
+            switch (action)
             {
-                case DuplicateAction.Skip:
-                    batch.SkippedCount++;
-                    break;
                 case DuplicateAction.Import:
-                    batch.ImportedCount++;
+                    await CreateTransaction(userId, batch, parsed);
+                    importedCount++;
                     break;
+
+                case DuplicateAction.Skip:
+                    skippedCount++;
+                    break;
+
                 case DuplicateAction.Merge:
-                    batch.DuplicateCount++;
+                    var merged = await MergeTransaction(batch.AccountId, parsed);
+                    if (merged)
+                        mergedCount++;
+                    else
+                    {
+                        // If no existing transaction found to merge with, import instead
+                        await CreateTransaction(userId, batch, parsed);
+                        importedCount++;
+                    }
                     break;
             }
         }
 
+        batch.ImportedCount = importedCount;
+        batch.SkippedCount = skippedCount;
+        batch.DuplicateCount = mergedCount;
+        batch.ParsedDataJson = null;
+        batch.Status = ImportStatus.Confirmed;
+
         await _db.SaveChangesAsync();
+
+        return MapBatchResponse(batch);
+    }
+
+    public async Task<List<ImportBatchResponse>> GetBatchesAsync(Guid userId)
+    {
+        return await _db.ImportBatches
+            .Include(b => b.Account)
+            .Where(b => b.UserId == userId)
+            .OrderByDescending(b => b.ImportedAt)
+            .Select(b => new ImportBatchResponse(
+                b.Id,
+                b.AccountId,
+                b.Account.Name,
+                b.FileName,
+                b.FileType,
+                b.TotalCount,
+                b.ImportedCount,
+                b.DuplicateCount,
+                b.SkippedCount,
+                0,
+                b.Status.ToString(),
+                b.ImportedAt))
+            .ToListAsync();
+    }
+
+    private async Task CreateTransaction(Guid userId, ImportBatch batch, ParsedTransaction parsed)
+    {
+        var fingerprint = TransactionFingerprint.Generate(batch.AccountId, parsed.Date, parsed.Amount, parsed.FitId);
+
+        var matchedPayee = await _payeeService.MatchPayeeAsync(userId, parsed.PayeeName ?? string.Empty);
+
+        var transaction = new Transaction
+        {
+            Id = Guid.NewGuid(),
+            AccountId = batch.AccountId,
+            Date = parsed.Date,
+            Amount = parsed.Amount,
+            PayeeId = matchedPayee?.Id,
+            PayeeName = parsed.PayeeName,
+            CategoryId = matchedPayee?.DefaultCategoryId,
+            Memo = parsed.Memo,
+            ReferenceNumber = parsed.ReferenceNumber,
+            CheckNumber = parsed.CheckNumber,
+            FitId = parsed.FitId,
+            Fingerprint = fingerprint,
+            Type = parsed.Amount >= 0 ? TransactionType.Credit : TransactionType.Debit,
+            Status = TransactionStatus.Uncleared,
+            ImportBatchId = batch.Id
+        };
+
+        _db.Transactions.Add(transaction);
+
+        // Update account balance
+        batch.Account.Balance += parsed.Amount;
+        batch.Account.UpdatedAt = DateTime.UtcNow;
+    }
+
+    private async Task<bool> MergeTransaction(Guid accountId, ParsedTransaction parsed)
+    {
+        var duplicate = await _duplicateService.FindDuplicateAsync(
+            accountId, parsed.Date, parsed.Amount, parsed.PayeeName, parsed.FitId, parsed.CheckNumber);
+
+        if (duplicate == null)
+            return false;
+
+        var existing = await _db.Transactions.FindAsync(duplicate.ExistingTransactionId);
+        if (existing == null)
+            return false;
+
+        // Fill in blank fields without overwriting user-edited data
+        if (string.IsNullOrEmpty(existing.Memo) && !string.IsNullOrEmpty(parsed.Memo))
+            existing.Memo = parsed.Memo;
+
+        if (string.IsNullOrEmpty(existing.FitId) && !string.IsNullOrEmpty(parsed.FitId))
+            existing.FitId = parsed.FitId;
+
+        if (string.IsNullOrEmpty(existing.CheckNumber) && !string.IsNullOrEmpty(parsed.CheckNumber))
+            existing.CheckNumber = parsed.CheckNumber;
+
+        if (string.IsNullOrEmpty(existing.ReferenceNumber) && !string.IsNullOrEmpty(parsed.ReferenceNumber))
+            existing.ReferenceNumber = parsed.ReferenceNumber;
+
+        if (string.IsNullOrEmpty(existing.Fingerprint))
+            existing.Fingerprint = TransactionFingerprint.Generate(accountId, parsed.Date, parsed.Amount, parsed.FitId);
+
+        existing.UpdatedAt = DateTime.UtcNow;
+
+        return true;
+    }
+
+    private static ImportBatchResponse MapBatchResponse(ImportBatch batch)
+    {
+        return new ImportBatchResponse(
+            batch.Id,
+            batch.AccountId,
+            batch.Account?.Name ?? string.Empty,
+            batch.FileName,
+            batch.FileType,
+            batch.TotalCount,
+            batch.ImportedCount,
+            batch.DuplicateCount,
+            batch.SkippedCount,
+            batch.DuplicateCount,
+            batch.Status.ToString(),
+            batch.ImportedAt);
     }
 }

src/Purrse.Core/Interfaces/Services/IImportService.cs

@@ -6,17 +6,21 @@ public interface IImportService
 {
     Task<ImportUploadResponse> UploadAsync(Guid userId, Guid accountId, string fileName, Stream fileStream);
     Task<ImportBatchResponse> ConfirmBatchAsync(Guid userId, Guid batchId);
-    Task ResolveDuplicatesAsync(Guid userId, Guid batchId, ResolveDuplicatesRequest request);
+    Task<ImportBatchResponse> ResolveDuplicatesAsync(Guid userId, Guid batchId, ResolveDuplicatesRequest request);
+    Task<List<ImportBatchResponse>> GetBatchesAsync(Guid userId);
 }
 
 public record ImportBatchResponse(
     Guid Id,
+    Guid AccountId,
+    string AccountName,
     string FileName,
     string FileType,
     int TotalCount,
     int ImportedCount,
     int DuplicateCount,
     int SkippedCount,
+    int MergedCount,
     string Status,
     DateTime ImportedAt
 );

src/Purrse.Core/Models/ImportBatch.cs

@@ -14,6 +14,7 @@ public class ImportBatch
     public int DuplicateCount { get; set; }
     public int SkippedCount { get; set; }
     public ImportStatus Status { get; set; } = ImportStatus.Pending;
+    public string? ParsedDataJson { get; set; }
     public DateTime ImportedAt { get; set; } = DateTime.UtcNow;
 
     public User User { get; set; } = null!;

src/Purrse.Data/Configurations/ImportBatchConfiguration.cs

@@ -12,6 +12,7 @@ public class ImportBatchConfiguration : IEntityTypeConfiguration<ImportBatch>
         builder.HasKey(b => b.Id);
         builder.Property(b => b.FileName).HasMaxLength(500).IsRequired();
         builder.Property(b => b.FileType).HasMaxLength(50).IsRequired();
+        builder.Property(b => b.ParsedDataJson).HasColumnType("text");
 
         builder.HasOne(b => b.User)
             .WithMany()

src/Purrse.Data/Migrations/20260208155836_AddParsedDataToImportBatch.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Purrse.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddParsedDataToImportBatch : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "ParsedDataJson",
+                table: "import_batches",
+                type: "text",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ParsedDataJson",
+                table: "import_batches");
+        }
+    }
+}

src/Purrse.Data/Migrations/PurrseDbContextModelSnapshot.cs

@@ -249,6 +249,9 @@ namespace Purrse.Data.Migrations
                     b.Property<int>("ImportedCount")
                         .HasColumnType("integer");
 
+                    b.Property<string>("ParsedDataJson")
+                        .HasColumnType("text");
+
                     b.Property<int>("SkippedCount")
                         .HasColumnType("integer");