diff --git a/app/Business/SystemizationTodoAuditLogger.php b/app/Business/SystemizationTodoAuditLogger.php
new file mode 100644
index 00000000..d90877f4
--- /dev/null
+++ b/app/Business/SystemizationTodoAuditLogger.php
@@ -0,0 +1,298 @@
+<?php
+
+namespace App\Business;
+
+use App\Models\Auth\User;
+use App\Models\Business\SystemizationTodo;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\DB;
+use RuntimeException;
+use Throwable;
+
+class SystemizationTodoAuditLogger
+{
+    public const TABLE = 'business_systemization_todo_audit_logs';
+
+    public const HISTORY_LIMIT = 500;
+
+    public const ACTION_LABELS = [
+        'create' => '新增',
+        'update' => '修改',
+        'delete' => '删除',
+        'import' => '导入',
+    ];
+
+    public const FIELD_LABELS = [
+        'category' => '类型',
+        'section' => '内容',
+        'title' => '待办事项',
+        'owner' => '总负责人',
+        'assignee' => '责任人',
+        'start_date' => '开始时间',
+        'start_note' => '开始时间备注',
+        'due_date' => '完成时间',
+        'due_note' => '完成时间备注',
+        'status' => '状态',
+        'completed_at' => '完成日期',
+        'progress' => '完成情况',
+        'notes' => '备注',
+        'attachment_count' => '完成截图',
+        'sort_order' => '排序位置',
+    ];
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function snapshot(SystemizationTodo $todo, bool $withAttachments = false): array
+    {
+        $snapshot = [
+            'id' => (int) $todo->id,
+            'category' => (string) ($todo->category ?? ''),
+            'section' => (string) ($todo->section ?? ''),
+            'title' => (string) ($todo->title ?? ''),
+            'owner' => (string) ($todo->owner ?? ''),
+            'assignee' => (string) ($todo->assignee ?? ''),
+            'start_date' => $todo->start_date?->format('Y-m-d') ?? '',
+            'start_note' => (string) ($todo->start_note ?? ''),
+            'due_date' => $todo->due_date?->format('Y-m-d') ?? '',
+            'due_note' => (string) ($todo->due_note ?? ''),
+            'status' => $todo->statusLabel(),
+            'completed_at' => $todo->completed_at?->format('Y-m-d') ?? '',
+            'progress' => (string) ($todo->progress ?? ''),
+            'notes' => (string) ($todo->notes ?? ''),
+            'sort_order' => (int) $todo->sort_order,
+            'source_key' => (string) ($todo->source_key ?? ''),
+        ];
+
+        if ($withAttachments) {
+            $snapshot['attachment_count'] = (int) $todo->attachments()->count();
+        }
+
+        return $snapshot;
+    }
+
+    public function record(
+        string $action,
+        int $companyId,
+        ?int $todoId,
+        ?array $before,
+        ?array $after,
+        ?int $userId = null,
+        ?string $actorName = null,
+        array $meta = [],
+    ): void {
+        $this->recordMany([[
+            'company_id' => $companyId,
+            'todo_id' => $todoId,
+            'action' => $action,
+            'before' => $before,
+            'after' => $after,
+            'user_id' => $userId,
+            'actor_name' => $actorName,
+            'meta' => $meta,
+        ]]);
+    }
+
+    /**
+     * @param  array<int, array{
+     *     company_id:int,
+     *     todo_id:?int,
+     *     action:string,
+     *     before:?array,
+     *     after:?array,
+     *     user_id:?int,
+     *     actor_name?:?string,
+     *     meta?:array
+     * }>  $events
+     */
+    public function recordMany(array $events): void
+    {
+        if ($events === []) {
+            return;
+        }
+        if (! $this->tableReady()) {
+            throw new RuntimeException('系统化待办操作记录表尚未就绪，请先完成数据库迁移。');
+        }
+
+        $now = $this->platformNow();
+        $actorNames = [];
+        $rows = [];
+        foreach ($events as $event) {
+            $action = (string) ($event['action'] ?? '');
+            if (! array_key_exists($action, self::ACTION_LABELS)) {
+                throw new RuntimeException('不支持的待办操作记录类型。');
+            }
+
+            $userId = isset($event['user_id']) ? (int) $event['user_id'] : null;
+            $actorName = trim((string) ($event['actor_name'] ?? ''));
+            if ($actorName === '' && $userId !== null) {
+                if (! array_key_exists($userId, $actorNames)) {
+                    $actorNames[$userId] = (string) (User::query()->whereKey($userId)->value('name') ?? '');
+                }
+                $actorName = $actorNames[$userId];
+            }
+
+            $meta = is_array($event['meta'] ?? null) ? $event['meta'] : [];
+            $rows[] = [
+                'company_id' => max(1, (int) ($event['company_id'] ?? 1)),
+                'todo_id' => isset($event['todo_id']) ? (int) $event['todo_id'] : null,
+                'action' => $action,
+                'before_json' => $this->json($event['before'] ?? null),
+                'after_json' => $this->json($event['after'] ?? null),
+                'actor_user_id' => $userId,
+                'actor_name' => mb_substr($actorName, 0, 191),
+                'extra_json' => $meta === [] ? null : $this->json($meta),
+                'at' => $now->toDateTimeString(),
+                'created_at' => $now->toDateTimeString(),
+                'updated_at' => $now->toDateTimeString(),
+            ];
+        }
+
+        DB::table(self::TABLE)->insert($rows);
+        $companyIds = array_values(array_unique(array_column($rows, 'company_id')));
+        foreach ($companyIds as $companyId) {
+            $maxId = (int) DB::table(self::TABLE)
+                ->where('company_id', $companyId)
+                ->max('id');
+            if ($maxId > self::HISTORY_LIMIT) {
+                DB::table(self::TABLE)
+                    ->where('company_id', $companyId)
+                    ->where('id', '<=', $maxId - self::HISTORY_LIMIT)
+                    ->delete();
+            }
+        }
+    }
+
+    /**
+     * @return array<int, array<string, mixed>>
+     */
+    public function history(int $companyId, int $limit = self::HISTORY_LIMIT): array
+    {
+        if (! $this->tableReady()) {
+            return [];
+        }
+
+        return DB::table(self::TABLE)
+            ->where('company_id', $companyId)
+            ->orderByDesc('id')
+            ->limit(max(1, min($limit, self::HISTORY_LIMIT)))
+            ->get()
+            ->map(fn (object $row): array => $this->serializeEvent($row))
+            ->all();
+    }
+
+    public function platformNow(): Carbon
+    {
+        $timezone = trim((string) config('app.platform_timezone', ''));
+        if ($timezone === '') {
+            $timezone = (string) config('app.timezone', 'UTC');
+        }
+
+        try {
+            return Carbon::now($timezone);
+        } catch (Throwable) {
+            return Carbon::now((string) config('app.timezone', 'UTC'));
+        }
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    private function serializeEvent(object $row): array
+    {
+        $before = $row->before_json ? json_decode((string) $row->before_json, true) : null;
+        $after = $row->after_json ? json_decode((string) $row->after_json, true) : null;
+        $before = is_array($before) ? $before : null;
+        $after = is_array($after) ? $after : null;
+        $meta = $row->extra_json ? json_decode((string) $row->extra_json, true) : [];
+        $meta = is_array($meta) ? $meta : [];
+        $source = $after ?? $before ?? [];
+
+        return [
+            'id' => (int) $row->id,
+            'at' => (string) $row->at,
+            'action' => (string) $row->action,
+            'action_label' => self::ACTION_LABELS[(string) $row->action] ?? (string) $row->action,
+            'todo_id' => $row->todo_id === null ? null : (int) $row->todo_id,
+            'category' => (string) ($source['category'] ?? ''),
+            'section' => (string) ($source['section'] ?? ''),
+            'title' => (string) ($source['title'] ?? ''),
+            'actor' => (string) ($row->actor_name ?? ''),
+            'before' => $before,
+            'after' => $after,
+            'meta' => $meta,
+            'changes' => $this->changes($before, $after),
+        ];
+    }
+
+    /**
+     * @return array<int, string>
+     */
+    private function changes(?array $before, ?array $after): array
+    {
+        if ($after === null && $before !== null) {
+            return ['删除前：' . $this->itemLabel($before)];
+        }
+        if ($before === null && $after !== null) {
+            return ['新增：' . $this->itemLabel($after)];
+        }
+        if ($before === null && $after === null) {
+            return ['—'];
+        }
+
+        $changes = [];
+        foreach (self::FIELD_LABELS as $field => $label) {
+            $old = $this->displayValue($field, $before[$field] ?? '');
+            $new = $this->displayValue($field, $after[$field] ?? '');
+            if ($old !== $new) {
+                $changes[] = $label . '：' . ($old !== '' ? $old : '空')
+                    . ' → ' . ($new !== '' ? $new : '空');
+            }
+        }
+
+        return $changes === [] ? ['内容无变化'] : $changes;
+    }
+
+    private function itemLabel(array $row): string
+    {
+        $parts = array_values(array_filter([
+            trim((string) ($row['category'] ?? '')),
+            trim((string) ($row['section'] ?? '')),
+            trim((string) ($row['title'] ?? '')),
+        ], static fn (string $value): bool => $value !== ''));
+
+        return $parts === [] ? '未命名待办' : implode(' · ', $parts);
+    }
+
+    private function displayValue(string $field, mixed $value): string
+    {
+        if ($field === 'attachment_count') {
+            return max(0, (int) $value) . ' 张';
+        }
+
+        return trim(str_replace(["\r\n", "\r"], "\n", (string) ($value ?? '')));
+    }
+
+    private function json(mixed $value): ?string
+    {
+        if ($value === null) {
+            return null;
+        }
+
+        $json = json_encode($value, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+        if ($json === false) {
+            throw new RuntimeException('待办操作记录序列化失败。');
+        }
+
+        return $json;
+    }
+
+    private function tableReady(): bool
+    {
+        try {
+            return DB::getSchemaBuilder()->hasTable(self::TABLE);
+        } catch (Throwable) {
+            return false;
+        }
+    }
+}
diff --git a/app/Business/SystemizationTodoWorkbookImporter.php b/app/Business/SystemizationTodoWorkbookImporter.php
index 34659c38..e66f5d8d 100644
--- a/app/Business/SystemizationTodoWorkbookImporter.php
+++ b/app/Business/SystemizationTodoWorkbookImporter.php
@@ -23,6 +23,11 @@ class SystemizationTodoWorkbookImporter
         'notes' => '备注',
     ];
 
+    public function __construct(
+        private readonly SystemizationTodoAuditLogger $audit,
+    ) {
+    }
+
     /**
      * 导入财务系统化待办。只新增系统中不存在的来源行，不覆盖日常维护后的状态与截图。
      *
@@ -58,7 +63,15 @@ class SystemizationTodoWorkbookImporter
             );
             $created = 0;
             $skipped = 0;
-            DB::transaction(function () use ($rows, $companyId, $userId, &$created, &$skipped): void {
+            DB::transaction(function () use (
+                $rows,
+                $sheetName,
+                $companyId,
+                $userId,
+                &$created,
+                &$skipped,
+            ): void {
+                $auditEvents = [];
                 foreach ($rows as $row) {
                     $exists = SystemizationTodo::withoutGlobalScopes()
                         ->where('company_id', $companyId)
@@ -69,15 +82,29 @@ class SystemizationTodoWorkbookImporter
                         continue;
                     }
 
-                    SystemizationTodo::withoutGlobalScopes()->create([
+                    $todo = SystemizationTodo::withoutGlobalScopes()->create([
                         ...$row['data'],
                         'company_id' => $companyId,
                         'imported_at' => now(),
                         'created_by' => $userId,
                         'updated_by' => $userId,
                     ]);
+                    $auditEvents[] = [
+                        'company_id' => $companyId,
+                        'todo_id' => (int) $todo->id,
+                        'action' => 'import',
+                        'before' => null,
+                        'after' => $this->audit->snapshot($todo),
+                        'user_id' => $userId,
+                        'meta' => [
+                            'source' => 'excel',
+                            'mode' => 'import',
+                            'sheet' => $sheetName,
+                        ],
+                    ];
                     $created++;
                 }
+                $this->audit->recordMany($auditEvents);
             });
 
             return ['created' => $created, 'skipped' => $skipped, 'sheet' => $sheetName];
@@ -171,9 +198,11 @@ class SystemizationTodoWorkbookImporter
                 $retainedSortOrder,
                 $companyId,
                 $userId,
+                $sheetName,
                 &$created,
                 &$updated,
             ): void {
+                $auditEvents = [];
                 SystemizationTodo::withoutGlobalScopes()
                     ->where('company_id', $companyId)
                     ->whereNull('deleted_at')
@@ -185,6 +214,7 @@ class SystemizationTodoWorkbookImporter
                     if (! $todo) {
                         continue;
                     }
+                    $before = $this->audit->snapshot($todo);
                     $todo->source_key = null;
                     $todo->syncOriginalAttribute('source_key');
                     $todo->fill($rows[$rowIndex]['data']);
@@ -206,18 +236,44 @@ class SystemizationTodoWorkbookImporter
                     $todo->updated_by = $userId;
                     $todo->save();
                     if ($contentChanged) {
+                        $auditEvents[] = [
+                            'company_id' => $companyId,
+                            'todo_id' => (int) $todo->id,
+                            'action' => 'import',
+                            'before' => $before,
+                            'after' => $this->audit->snapshot($todo),
+                            'user_id' => $userId,
+                            'meta' => [
+                                'source' => 'excel',
+                                'mode' => 'sync',
+                                'sheet' => $sheetName,
+                            ],
+                        ];
                         $updated++;
                     }
                 }
 
                 foreach ($newIndexes as $rowIndex) {
-                    SystemizationTodo::withoutGlobalScopes()->create([
+                    $todo = SystemizationTodo::withoutGlobalScopes()->create([
                         ...$rows[$rowIndex]['data'],
                         'company_id' => $companyId,
                         'imported_at' => now(),
                         'created_by' => $userId,
                         'updated_by' => $userId,
                     ]);
+                    $auditEvents[] = [
+                        'company_id' => $companyId,
+                        'todo_id' => (int) $todo->id,
+                        'action' => 'import',
+                        'before' => null,
+                        'after' => $this->audit->snapshot($todo),
+                        'user_id' => $userId,
+                        'meta' => [
+                            'source' => 'excel',
+                            'mode' => 'sync',
+                            'sheet' => $sheetName,
+                        ],
+                    ];
                     $created++;
                 }
 
@@ -229,6 +285,8 @@ class SystemizationTodoWorkbookImporter
                             'source_key' => $oldSourceKeys[$todo->id] ?? null,
                         ]);
                 }
+
+                $this->audit->recordMany($auditEvents);
             });
 
             return [
@@ -272,11 +330,15 @@ class SystemizationTodoWorkbookImporter
             if ($rowNumber <= $headerRow) {
                 continue;
             }
-            $categoryValue = $this->cell($cells, $columns['category'] ?? null);
+            $categoryValue = $this->cleanImportedLabel(
+                $this->cell($cells, $columns['category'] ?? null)
+            );
             if ($categoryValue !== '') {
                 $category = $categoryValue;
             }
-            $sectionValue = $this->cell($cells, $columns['section'] ?? null);
+            $sectionValue = $this->cleanImportedLabel(
+                $this->cell($cells, $columns['section'] ?? null)
+            );
             if ($sectionValue !== '') {
                 $section = $sectionValue;
             }
@@ -362,7 +424,7 @@ class SystemizationTodoWorkbookImporter
             static fn (string $line): bool => preg_match($marker, trim($line)) === 1,
         );
         if (count($numberedLines) < 2) {
-            return [$value];
+            return [$this->cleanImportedLabel($value)];
         }
 
         $segments = [];
@@ -385,7 +447,9 @@ class SystemizationTodoWorkbookImporter
             $segments[] = trim($current);
         }
 
-        return $segments !== [] ? $segments : [$value];
+        return $segments !== []
+            ? $segments
+            : [$this->cleanImportedLabel($value)];
     }
 
     /**
@@ -419,8 +483,8 @@ class SystemizationTodoWorkbookImporter
                 $candidates[$sourceKey] ?? [],
                 fn (SystemizationTodo $todo): bool =>
                     ! in_array($todo->id, $usedIds, true)
-                    && $this->matchText($todo->category) === $this->matchText($row['category'])
-                    && $this->matchText($todo->section) === $this->matchText($row['section']),
+                    && $this->matchGroupKey($todo->category) === $this->matchGroupKey($row['category'])
+                    && $this->matchGroupKey($todo->section) === $this->matchGroupKey($row['section']),
             ));
             if ($available === []) {
                 continue;
@@ -467,8 +531,8 @@ class SystemizationTodoWorkbookImporter
             foreach ($remainingIds as $todoId) {
                 $todo = $todoById->get($todoId);
                 if (! $todo
-                    || $this->matchText($todo->category) !== $this->matchText($row['category'])
-                    || $this->matchText($todo->section) !== $this->matchText($row['section'])) {
+                    || $this->matchGroupKey($todo->category) !== $this->matchGroupKey($row['category'])
+                    || $this->matchGroupKey($todo->section) !== $this->matchGroupKey($row['section'])) {
                     continue;
                 }
                 $similarity = $this->titleSimilarity((string) $todo->title, $row['title']);
@@ -510,6 +574,20 @@ class SystemizationTodoWorkbookImporter
         return $this->matchText($value);
     }
 
+    private function matchGroupKey(?string $value): string
+    {
+        return $this->matchTitleKey($this->cleanImportedLabel($value));
+    }
+
+    private function cleanImportedLabel(?string $value): string
+    {
+        return trim((string) preg_replace(
+            '/^\s*(?:\d+|[一二三四五六七八九十百]+)\s*[、,，.．:：;；)]\s*/u',
+            '',
+            (string) $value,
+        ));
+    }
+
     private function matchText(?string $value): string
     {
         return mb_strtolower(
diff --git a/app/Http/Controllers/Business/SystemizationTodos.php b/app/Http/Controllers/Business/SystemizationTodos.php
index 607c60d7..2205c5ec 100644
--- a/app/Http/Controllers/Business/SystemizationTodos.php
+++ b/app/Http/Controllers/Business/SystemizationTodos.php
@@ -2,9 +2,11 @@
 
 namespace App\Http\Controllers\Business;
 
+use App\Business\SystemizationTodoAuditLogger;
 use App\Business\SystemizationTodoWorkbookImporter;
 use App\Models\Business\SystemizationTodo;
 use App\Models\Business\SystemizationTodoAttachment;
+use Illuminate\Http\JsonResponse;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Illuminate\Routing\Controller;
@@ -27,6 +29,11 @@ class SystemizationTodos extends Controller
         'none' => '无提醒',
     ];
 
+    public function __construct(
+        private readonly SystemizationTodoAuditLogger $audit,
+    ) {
+    }
+
     public function page(): array
     {
         $filters = $this->filters();
@@ -202,6 +209,8 @@ class SystemizationTodos extends Controller
                     'attachment' => '__ATTACHMENT__',
                 ]),
                 'import' => route('business.systemization-todos.import'),
+                'history' => route('business.systemization-todos.history'),
+                'historyExport' => route('business.systemization-todos.history.export'),
             ],
         ];
     }
@@ -392,10 +401,22 @@ class SystemizationTodos extends Controller
                 ? 1
                 : min($position, $siblings->count() + 1);
 
-            return SystemizationTodo::query()->create([
+            $todo = SystemizationTodo::query()->create([
                 ...$data,
                 'sort_order' => $insertOrder,
             ]);
+            $this->audit->record(
+                'create',
+                (int) company_id(),
+                (int) $todo->id,
+                null,
+                $this->audit->snapshot($todo),
+                user_id(),
+                null,
+                ['source' => 'manual'],
+            );
+
+            return $todo;
         });
         $this->storeAttachments($request, $todo);
 
@@ -529,16 +550,34 @@ class SystemizationTodos extends Controller
         if ($ids === []) {
             return;
         }
-        SystemizationTodo::query()
+
+        $todos = SystemizationTodo::query()
             ->whereIn('id', $ids)
-            ->update([
+            ->lockForUpdate()
+            ->get();
+        $auditEvents = [];
+        foreach ($todos as $todo) {
+            $before = $this->audit->snapshot($todo);
+            $todo->fill([
                 ...$data,
                 'updated_by' => user_id(),
-            ]);
+            ])->save();
+            $auditEvents[] = [
+                'company_id' => (int) company_id(),
+                'todo_id' => (int) $todo->id,
+                'action' => 'update',
+                'before' => $before,
+                'after' => $this->audit->snapshot($todo),
+                'user_id' => user_id(),
+                'meta' => ['source' => 'manual', 'scope' => 'group'],
+            ];
+        }
+        $this->audit->recordMany($auditEvents);
     }
 
     public function update(Request $request, SystemizationTodo $todo): RedirectResponse
     {
+        $before = $this->audit->snapshot($todo, true);
         $data = $this->validated($request);
         $this->normalizePendingDates($request, $data);
         $targetPosition = max(0, (int) ($data['position'] ?? 0));
@@ -573,18 +612,107 @@ class SystemizationTodos extends Controller
             $todo->setRawAttributes($lockedTodo->getAttributes(), true);
         });
         $this->storeAttachments($request, $todo);
+        $todo->refresh();
+        $after = $this->audit->snapshot($todo, true);
+        if ($before !== $after) {
+            $this->audit->record(
+                'update',
+                (int) company_id(),
+                (int) $todo->id,
+                $before,
+                $after,
+                user_id(),
+                null,
+                ['source' => 'manual'],
+            );
+        }
 
         return $this->backToPage('待办事项已更新并定位。', 'success', $todo);
     }
 
     public function destroy(SystemizationTodo $todo): RedirectResponse
     {
-        $todo->update(['updated_by' => user_id()]);
-        $todo->delete();
+        DB::transaction(function () use ($todo): void {
+            $before = $this->audit->snapshot($todo, true);
+            $todo->update(['updated_by' => user_id()]);
+            $todo->delete();
+            $this->audit->record(
+                'delete',
+                (int) company_id(),
+                (int) $todo->id,
+                $before,
+                null,
+                user_id(),
+                null,
+                ['source' => 'manual'],
+            );
+        });
 
         return $this->backToPage('待办事项已删除。');
     }
 
+    public function history(): JsonResponse
+    {
+        $events = $this->audit->history((int) company_id());
+
+        return response()->json([
+            'events' => $events,
+            'total' => count($events),
+            'limit' => SystemizationTodoAuditLogger::HISTORY_LIMIT,
+        ]);
+    }
+
+    public function historyExport(Request $request): StreamedResponse
+    {
+        $action = trim((string) $request->query('action', ''));
+        $keyword = trim((string) $request->query('keyword', ''));
+        $rows = array_values(array_filter(
+            $this->audit->history((int) company_id()),
+            fn (array $row): bool => $this->historyMatches($row, $action, $keyword),
+        ));
+
+        return response()->streamDownload(function () use ($rows): void {
+            $handle = fopen('php://output', 'w');
+            fwrite($handle, "\xEF\xBB\xBF");
+            fputcsv($handle, ['时间', '操作', '类型', '内容', '待办事项', '变更内容', '操作人']);
+            foreach ($rows as $row) {
+                fputcsv($handle, [
+                    $row['at'],
+                    $row['action_label'],
+                    $row['category'],
+                    $row['section'],
+                    $row['title'],
+                    implode('；', $row['changes']),
+                    $row['actor'],
+                ]);
+            }
+            fclose($handle);
+        }, '系统化待办_操作记录.csv', [
+            'Content-Type' => 'text/csv; charset=UTF-8',
+            'Cache-Control' => 'private, no-store',
+        ]);
+    }
+
+    private function historyMatches(array $row, string $action, string $keyword): bool
+    {
+        if ($action !== '' && (string) ($row['action'] ?? '') !== $action) {
+            return false;
+        }
+        if ($keyword === '') {
+            return true;
+        }
+
+        $haystack = implode(' ', [
+            (string) ($row['category'] ?? ''),
+            (string) ($row['section'] ?? ''),
+            (string) ($row['title'] ?? ''),
+            (string) ($row['actor'] ?? ''),
+            implode(' ', (array) ($row['changes'] ?? [])),
+        ]);
+
+        return mb_stripos($haystack, $keyword, 0, 'UTF-8') !== false;
+    }
+
     public function attachment(SystemizationTodo $todo, SystemizationTodoAttachment $attachment): StreamedResponse
     {
         abort_unless((int) $attachment->systemization_todo_id === (int) $todo->id, 404);
diff --git a/database/migrations/2026_10_27_150000_create_systemization_todo_audit_logs.php b/database/migrations/2026_10_27_150000_create_systemization_todo_audit_logs.php
new file mode 100644
index 00000000..5c7f8654
--- /dev/null
+++ b/database/migrations/2026_10_27_150000_create_systemization_todo_audit_logs.php
@@ -0,0 +1,47 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        if (Schema::hasTable('business_systemization_todo_audit_logs')) {
+            return;
+        }
+
+        Schema::create('business_systemization_todo_audit_logs', function (Blueprint $table): void {
+            $table->bigIncrements('id');
+            $table->unsignedInteger('company_id')->default(1);
+            $table->unsignedBigInteger('todo_id')->nullable();
+            $table->string('action', 32);
+            $table->longText('before_json')->nullable();
+            $table->longText('after_json')->nullable();
+            $table->unsignedBigInteger('actor_user_id')->nullable();
+            $table->string('actor_name', 191)->nullable();
+            $table->longText('extra_json')->nullable();
+            $table->dateTime('at');
+            $table->timestamps();
+
+            $table->index(
+                ['company_id', 'at'],
+                'systemization_todo_audit_company_at_index'
+            );
+            $table->index(
+                ['company_id', 'todo_id', 'id'],
+                'systemization_todo_audit_company_todo_index'
+            );
+            $table->index(
+                ['company_id', 'action', 'id'],
+                'systemization_todo_audit_company_action_index'
+            );
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('business_systemization_todo_audit_logs');
+    }
+};
diff --git a/resources/views/business/pages/systemization-todos.blade.php b/resources/views/business/pages/systemization-todos.blade.php
index 1d206f65..4d84db70 100644
--- a/resources/views/business/pages/systemization-todos.blade.php
+++ b/resources/views/business/pages/systemization-todos.blade.php
@@ -11,6 +11,7 @@
         .sys-todo-page__button--primary { border-color:var(--sys-gold); background:var(--sys-gold); color:#fff; }
         .sys-todo-page__button--primary:hover { background:#6a5129; color:#fff; }
         .sys-todo-page__button .material-icons-outlined { font-size:1rem; }
+        .sys-todo-page__head-actions .sys-todo-page__button { min-height:2.125rem; }
         .sys-todo-page__intro { margin:.35rem 0 0; color:var(--sys-muted); font-size:.75rem; line-height:1.6; }
         .sys-todo-summary { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:.55rem; margin:.8rem 0; }
         .sys-todo-summary__item { display:flex; align-items:center; justify-content:space-between; gap:.6rem; padding:.5rem .7rem; border:1px solid #e6dfd2; border-radius:.5rem; background:#fffdf9; }
@@ -111,6 +112,7 @@
         .sys-todo-import label { display:grid; gap:.3rem; color:#595959; font-size:.75rem; }
         .sys-todo-import input { font:inherit; font-size:.8125rem; }
         .sys-todo-dialog { width:min(64rem,calc(100vw - 2rem)); max-height:90vh; padding:0; border:1px solid var(--sys-border); border-radius:1rem; background:#fff; color:#171717; overflow:hidden; }
+        .sys-todo-dialog--history { width:min(82rem,calc(100vw - 2rem)); }
         .sys-todo-dialog::backdrop { background:rgba(23,23,23,.5); }
         .sys-todo-dialog__head { display:flex; align-items:center; gap:1rem; padding:1rem 1.25rem; border-bottom:1px solid #e8e0d2; background:#faf6ee; }
         .sys-todo-dialog__head h2 { margin:0; font-size:1rem; }
@@ -176,6 +178,30 @@
         .sys-todo-dialog__foot .sys-todo-dialog__delete { margin-right:auto; border-color:#e7c3c3; color:#b80000; }
         .sys-todo-dialog__foot .sys-todo-dialog__delete:hover { background:#fff3f3; }
         .sys-todo-dialog__foot .sys-todo-dialog__delete[hidden] { display:none; }
+        .sys-todo-history-tools { display:flex; flex-wrap:wrap; align-items:center; gap:.5rem; margin-bottom:.75rem; }
+        .sys-todo-history-tools select, .sys-todo-history-tools input { min-height:2.1rem; padding:0 .6rem; border:1px solid var(--sys-border); border-radius:.45rem; background:#fff; color:#171717; font:inherit; font-size:.78rem; }
+        .sys-todo-history-tools input { flex:1 1 16rem; min-width:12rem; }
+        .sys-todo-history-tools button { min-height:2.1rem; padding:0 .75rem; border:1px solid var(--sys-border); border-radius:.45rem; background:#fff; color:#171717; font:inherit; font-size:.78rem; cursor:pointer; }
+        .sys-todo-history-tools button:hover { border-color:var(--sys-gold); background:var(--sys-gold-soft); }
+        .sys-todo-history-meta { color:#666; font-size:.72rem; }
+        .sys-todo-history-scroll { max-height:calc(90vh - 13rem); overflow:auto; border:1px solid var(--sys-border); border-radius:.55rem; }
+        .sys-todo-history-table { width:100%; min-width:68rem; border-collapse:separate; border-spacing:0; font-size:.75rem; }
+        .sys-todo-history-table th { position:sticky; top:0; z-index:1; padding:.55rem .65rem; border-bottom:1px solid var(--sys-border); background:#f3ece0; color:#3d3a35; text-align:left; white-space:nowrap; }
+        .sys-todo-history-table td { padding:.6rem .65rem; border-bottom:1px solid #eee7da; color:#302b24; line-height:1.55; vertical-align:top; overflow-wrap:anywhere; }
+        .sys-todo-history-table tbody tr:hover td { background:#fdfbf6; }
+        .sys-todo-history-table__at { width:9.5rem; white-space:nowrap; }
+        .sys-todo-history-table__action { width:5rem; white-space:nowrap; }
+        .sys-todo-history-table__item { width:18rem; }
+        .sys-todo-history-table__actor { width:7rem; white-space:nowrap; }
+        .sys-todo-history-tag { display:inline-flex; align-items:center; padding:.08rem .42rem; border:1px solid #d9cfbd; border-radius:999px; background:#faf6ee; color:#51483c; font-size:.7rem; font-weight:600; }
+        .sys-todo-history-tag--create,.sys-todo-history-tag--import { border-color:#bad0ac; background:#f2f8ed; color:#53793e; }
+        .sys-todo-history-tag--update { border-color:#dbbf7a; background:#fff7df; color:#935f07; }
+        .sys-todo-history-tag--delete { border-color:#e7c3c3; background:#fff3f3; color:#b80000; }
+        .sys-todo-history-item-title { margin-top:.2rem; color:#595959; font-size:.72rem; }
+        .sys-todo-history-changes { margin:0; padding-left:1rem; }
+        .sys-todo-history-changes li + li { margin-top:.22rem; }
+        .sys-todo-history-empty { padding:1.5rem 1rem; color:#666; font-size:.8rem; text-align:center; }
+        .sys-todo-history-empty[hidden] { display:none; }
         .sys-todo-confirm { width:min(30rem,calc(100vw - 2rem)); padding:0; border:1px solid var(--sys-border); border-radius:.8rem; background:#fff; color:#171717; overflow:hidden; }
         .sys-todo-confirm::backdrop { background:rgba(23,23,23,.58); }
         .sys-todo-confirm__head { display:flex; align-items:center; gap:.55rem; padding:.9rem 1rem; border-bottom:1px solid #e8e0d2; background:#fff8f8; color:#b80000; font-weight:600; }
@@ -224,6 +250,12 @@
                 </div>
                 <p class="sys-todo-page__intro">日常过会使用。在类型、内容或序号旁直接添加，筛选修改后仍保持当前筛选结果。</p>
             </div>
+            <div class="sys-todo-page__head-actions">
+                <button type="button" class="sys-todo-page__button" data-sys-todo-history-open>
+                    <span class="material-icons-outlined" aria-hidden="true">history</span>
+                    操作记录
+                </button>
+            </div>
         </div>
     </div>
 
@@ -747,6 +779,43 @@
         </form>
     </dialog>
 
+    <dialog class="sys-todo-dialog sys-todo-dialog--history" id="sysTodoHistoryDialog" aria-labelledby="sysTodoHistoryDialogTitle">
+        <div class="sys-todo-dialog__head">
+            <h2 id="sysTodoHistoryDialogTitle">系统化待办 · 操作记录</h2>
+            <button type="button" class="sys-todo-dialog__close" data-sys-todo-history-close aria-label="关闭">×</button>
+        </div>
+        <div class="sys-todo-dialog__body">
+            <div class="sys-todo-history-tools">
+                <select data-sys-todo-history-action aria-label="按操作筛选">
+                    <option value="">全部操作</option>
+                    <option value="create">新增</option>
+                    <option value="update">修改</option>
+                    <option value="delete">删除</option>
+                    <option value="import">导入</option>
+                </select>
+                <input type="search" data-sys-todo-history-keyword placeholder="搜类型、内容、待办事项、变更内容或操作人" aria-label="搜索操作记录">
+                <button type="button" data-sys-todo-history-export>导出记录 CSV</button>
+                <span class="sys-todo-history-meta" data-sys-todo-history-meta></span>
+                <span class="sys-todo-history-meta">时间为北京时间，保留最近 500 条</span>
+            </div>
+            <div class="sys-todo-history-scroll">
+                <table class="sys-todo-history-table">
+                    <thead>
+                    <tr>
+                        <th class="sys-todo-history-table__at">时间</th>
+                        <th class="sys-todo-history-table__action">操作</th>
+                        <th class="sys-todo-history-table__item">类型 / 内容 / 待办事项</th>
+                        <th>变更内容</th>
+                        <th class="sys-todo-history-table__actor">操作人</th>
+                    </tr>
+                    </thead>
+                    <tbody data-sys-todo-history-body></tbody>
+                </table>
+            </div>
+            <div class="sys-todo-history-empty" data-sys-todo-history-empty hidden>暂无操作记录。</div>
+        </div>
+    </dialog>
+
     <dialog class="sys-todo-confirm" id="sysTodoDeleteConfirm" aria-labelledby="sysTodoDeleteConfirmTitle">
         <form method="POST" data-sys-todo-delete-form>
             @csrf
@@ -847,6 +916,13 @@
             var groupLabel = groupDialog.querySelector('[data-sys-todo-group-label]');
             var groupInput = groupDialog.querySelector('[data-sys-todo-group-input]');
             var groupNote = groupDialog.querySelector('[data-sys-todo-group-note]');
+            var historyDialog = document.getElementById('sysTodoHistoryDialog');
+            var historyAction = historyDialog.querySelector('[data-sys-todo-history-action]');
+            var historyKeyword = historyDialog.querySelector('[data-sys-todo-history-keyword]');
+            var historyExport = historyDialog.querySelector('[data-sys-todo-history-export]');
+            var historyMeta = historyDialog.querySelector('[data-sys-todo-history-meta]');
+            var historyBody = historyDialog.querySelector('[data-sys-todo-history-body]');
+            var historyEmpty = historyDialog.querySelector('[data-sys-todo-history-empty]');
             var routes = @json($todoRoutes, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
             var positionGroups = @json($todoPositionGroups, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
             var contentOptions = @json($todoContentOptions, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
@@ -873,6 +949,7 @@
                 return Number(column.getAttribute('data-default-width') || 100);
             });
             var columnWidths = defaultColumnWidths.slice();
+            var historyEvents = [];
 
             function decodePayload(value) {
                 var binary = atob(value);
@@ -1494,7 +1571,134 @@
                 else deleteConfirm.removeAttribute('open');
             }
 
+            function historyFilteredEvents() {
+                var action = historyAction.value;
+                var keyword = historyKeyword.value.trim().toLowerCase();
+                return historyEvents.filter(function (event) {
+                    if (action && event.action !== action) return false;
+                    if (!keyword) return true;
+                    var changes = Array.isArray(event.changes) ? event.changes.join(' ') : '';
+                    var haystack = [
+                        event.category,
+                        event.section,
+                        event.title,
+                        event.actor,
+                        changes
+                    ].join(' ').toLowerCase();
+                    return haystack.indexOf(keyword) >= 0;
+                });
+            }
+
+            function appendHistoryChanges(cell, event) {
+                var changes = Array.isArray(event.changes) && event.changes.length
+                    ? event.changes
+                    : ['—'];
+                if (changes.length === 1) {
+                    cell.textContent = changes[0];
+                    return;
+                }
+                var list = document.createElement('ul');
+                list.className = 'sys-todo-history-changes';
+                changes.forEach(function (change) {
+                    var item = document.createElement('li');
+                    item.textContent = change;
+                    list.appendChild(item);
+                });
+                cell.appendChild(list);
+            }
+
+            function renderHistory() {
+                var events = historyFilteredEvents();
+                historyBody.replaceChildren();
+                events.forEach(function (event) {
+                    var row = document.createElement('tr');
+
+                    var at = document.createElement('td');
+                    at.className = 'sys-todo-history-table__at';
+                    at.textContent = event.at || '—';
+                    row.appendChild(at);
+
+                    var action = document.createElement('td');
+                    action.className = 'sys-todo-history-table__action';
+                    var tag = document.createElement('span');
+                    tag.className = 'sys-todo-history-tag sys-todo-history-tag--' + (event.action || '');
+                    tag.textContent = event.action_label || event.action || '—';
+                    action.appendChild(tag);
+                    row.appendChild(action);
+
+                    var item = document.createElement('td');
+                    item.className = 'sys-todo-history-table__item';
+                    var category = document.createElement('div');
+                    category.textContent = [event.category, event.section].filter(Boolean).join(' / ') || '—';
+                    var title = document.createElement('div');
+                    title.className = 'sys-todo-history-item-title';
+                    title.textContent = event.title || '—';
+                    item.appendChild(category);
+                    item.appendChild(title);
+                    row.appendChild(item);
+
+                    var changes = document.createElement('td');
+                    appendHistoryChanges(changes, event);
+                    row.appendChild(changes);
+
+                    var actor = document.createElement('td');
+                    actor.className = 'sys-todo-history-table__actor';
+                    actor.textContent = event.actor || '—';
+                    row.appendChild(actor);
+                    historyBody.appendChild(row);
+                });
+
+                historyEmpty.hidden = events.length > 0;
+                historyEmpty.textContent = historyEvents.length
+                    ? '没有符合条件的操作记录。'
+                    : '暂无操作记录；从本次功能上线后的第一次新增、修改、删除或导入开始记录。';
+                historyMeta.textContent = '显示 ' + events.length + ' / ' + historyEvents.length + ' 条';
+                var params = new URLSearchParams();
+                if (historyAction.value) params.set('action', historyAction.value);
+                if (historyKeyword.value.trim()) params.set('keyword', historyKeyword.value.trim());
+                historyExport.setAttribute(
+                    'data-export-url',
+                    routes.historyExport + (params.toString() ? '?' + params.toString() : '')
+                );
+            }
+
+            function loadHistory() {
+                historyMeta.textContent = '正在读取…';
+                fetch(routes.history, {
+                    headers: { 'Accept': 'application/json', 'X-Requested-With': 'XMLHttpRequest' }
+                }).then(function (response) {
+                    return response.json().catch(function () { return {}; }).then(function (data) {
+                        if (!response.ok) throw new Error(data.message || '读取失败（HTTP ' + response.status + '）');
+                        return data;
+                    });
+                }).then(function (data) {
+                    historyEvents = Array.isArray(data.events) ? data.events : [];
+                    renderHistory();
+                }).catch(function (error) {
+                    historyEvents = [];
+                    historyBody.replaceChildren();
+                    historyEmpty.hidden = false;
+                    historyEmpty.textContent = '操作记录读取失败：' + (error && error.message ? error.message : error);
+                    historyMeta.textContent = '读取失败';
+                });
+            }
+
+            function openHistoryDialog() {
+                if (typeof historyDialog.showModal === 'function') historyDialog.showModal();
+                else historyDialog.setAttribute('open', '');
+                loadHistory();
+            }
+
+            function closeHistoryDialog() {
+                if (typeof historyDialog.close === 'function') historyDialog.close();
+                else historyDialog.removeAttribute('open');
+            }
+
             document.addEventListener('click', function (event) {
+                if (event.target.closest('[data-sys-todo-history-open]')) {
+                    openHistoryDialog();
+                    return;
+                }
                 var gallery = event.target.closest('[data-sys-todo-image-gallery]');
                 if (gallery) {
                     event.preventDefault();
@@ -1575,6 +1779,7 @@
                 if (event.target.closest('[data-sys-todo-close]')) closeDialog();
                 if (event.target.closest('[data-sys-todo-group-close]')) closeGroupDialog();
                 if (event.target.closest('[data-sys-todo-delete-close]')) closeDeleteConfirm();
+                if (event.target.closest('[data-sys-todo-history-close]')) closeHistoryDialog();
                 if (event.target.closest('[data-sys-todo-image-close]')) closeImageViewer();
                 if (event.target.closest('[data-sys-todo-image-prev]')) showPreviousImage();
                 if (event.target.closest('[data-sys-todo-image-next]')) showNextImage();
@@ -1602,6 +1807,15 @@
             deleteConfirm.addEventListener('click', function (event) {
                 if (event.target === deleteConfirm) closeDeleteConfirm();
             });
+            historyDialog.addEventListener('click', function (event) {
+                if (event.target === historyDialog) closeHistoryDialog();
+            });
+            historyAction.addEventListener('change', renderHistory);
+            historyKeyword.addEventListener('input', renderHistory);
+            historyExport.addEventListener('click', function () {
+                var url = historyExport.getAttribute('data-export-url');
+                if (url) window.location.href = url;
+            });
             categorySelect.addEventListener('change', function () {
                 syncCategoryValue();
                 refreshSectionForCategory();
diff --git a/routes/admin.php b/routes/admin.php
index b4899f31..b309a010 100644
--- a/routes/admin.php
+++ b/routes/admin.php
@@ -568,6 +568,11 @@ Route::get('workspace/courier-payables/third-party-warehouse-storage/settlement-
     ->middleware('business.page:courier-payables,third-party-warehouse-storage')
     ->name('business.courier-payables.third-party-warehouse-storage.settlement-export');
 
+// 必须注册在通用 {section}/{page}/{tab}/export 之前，否则会被通用导出路由截获。
+Route::get('workspace/other/systemization-todos/history/export', [SystemizationTodos::class, 'historyExport'])
+    ->middleware('business.page:other,systemization-todos')
+    ->name('business.systemization-todos.history.export');
+
 Route::middleware('business.page.viewer')->group(function (): void {
     Route::get('workspace/{section}/{page}/{tab}/export', 'Business\Pages@export')
         ->name('business.pages.export');
@@ -785,6 +790,7 @@ Route::prefix('workspace/other/systemization-todos')
             ->middleware('import')
             ->name('import');
         Route::post('/', [SystemizationTodos::class, 'store'])->name('store');
+        Route::get('history', [SystemizationTodos::class, 'history'])->name('history');
         Route::patch('{todo}/category', [SystemizationTodos::class, 'updateCategory'])
             ->whereNumber('todo')
             ->name('category');
diff --git a/tests/Feature/Business/SystemizationTodosTest.php b/tests/Feature/Business/SystemizationTodosTest.php
index 63b741ba..a21e9fa8 100644
--- a/tests/Feature/Business/SystemizationTodosTest.php
+++ b/tests/Feature/Business/SystemizationTodosTest.php
@@ -39,6 +39,9 @@ class SystemizationTodosTest extends FeatureTestCase
             ->assertSeeText('完成情况 / 备注')
             ->assertSeeText('提醒')
             ->assertSee('data-sys-todo-default-start-date', false)
+            ->assertSee('data-sys-todo-history-open', false)
+            ->assertSee('id="sysTodoHistoryDialog"', false)
+            ->assertSee('data-sys-todo-history-export', false)
             ->assertSee('data-sys-todo-inline-add', false)
             ->assertSee('data-sys-todo-col-resizer', false)
             ->assertSee('data-sys-todo-reset-columns', false)
@@ -857,6 +860,121 @@ class SystemizationTodosTest extends FeatureTestCase
         }
     }
 
+    public function test_manual_changes_are_listed_in_operation_history_and_csv(): void
+    {
+        $this->loginAs();
+
+        $this->post(route('business.systemization-todos.store'), [
+            'category' => '收入',
+            'section' => '操作记录测试',
+            'title' => '原待办',
+            'owner' => '晨曦',
+            'assignee' => '栎阳',
+            'start_date' => '2026-10-27',
+            'due_date' => '2026-10-30',
+            'status' => SystemizationTodo::STATUS_INCOMPLETE,
+        ])->assertRedirect();
+
+        $todo = SystemizationTodo::query()->firstOrFail();
+        $this->patch(route('business.systemization-todos.update', ['todo' => $todo->id]), [
+            'category' => '收入',
+            'section' => '操作记录测试',
+            'title' => '修改后的待办',
+            'owner' => '晨曦、人参',
+            'assignee' => '栎阳',
+            'start_date' => '2026-10-27',
+            'due_date' => '2026-10-31',
+            'status' => SystemizationTodo::STATUS_COMPLETED,
+            'progress' => '已完成并留档',
+        ])->assertRedirect();
+
+        $this->delete(route('business.systemization-todos.destroy', ['todo' => $todo->id]))
+            ->assertRedirect();
+
+        $history = $this->getJson(route('business.systemization-todos.history'))
+            ->assertOk()
+            ->json();
+
+        $this->assertSame(['delete', 'update', 'create'], array_column($history['events'], 'action'));
+        $this->assertSame($this->user->name, $history['events'][0]['actor']);
+        $this->assertSame('修改后的待办', $history['events'][1]['title']);
+        $this->assertContains('待办事项：原待办 → 修改后的待办', $history['events'][1]['changes']);
+        $this->assertContains('状态：未完成 → 已完成', $history['events'][1]['changes']);
+        $this->assertStringContainsString('删除前：收入 · 操作记录测试 · 修改后的待办', $history['events'][0]['changes'][0]);
+
+        $csv = $this->get(
+            route('business.systemization-todos.history.export') . '?action=update'
+        )->streamedContent();
+        $this->assertStringContainsString('时间,操作,类型,内容,待办事项,变更内容,操作人', $csv);
+        $this->assertStringContainsString('修改,收入,操作记录测试,修改后的待办', $csv);
+        $this->assertStringNotContainsString('删除前：', $csv);
+        $this->assertStringNotContainsString('新增：', $csv);
+    }
+
+    public function test_excel_sync_audits_changes_and_matches_numbered_group_labels_without_duplicates(): void
+    {
+        $this->loginAs();
+
+        $todo = $this->createTodo(
+            '收入',
+            '平台收入核对',
+            '平台收入核对',
+            '2026-11-30',
+            10,
+        );
+        $todo->update(['imported_at' => now()]);
+
+        $path = sys_get_temp_dir() . '/systemization-numbered-sync-' . uniqid() . '.xlsx';
+        try {
+            $this->writeWorkbook($path, [[
+                '1、收入',
+                '2、平台收入核对',
+                '1、平台收入核对（已更新）',
+                '晨曦',
+                '栎阳',
+                '2026-10-27',
+                '2026-11-30',
+                null,
+                null,
+            ]]);
+
+            $preview = app(SystemizationTodoWorkbookImporter::class)
+                ->sync($path, (int) company_id(), user_id(), true);
+            $this->assertSame(0, $preview['created']);
+            $this->assertSame(1, $preview['updated']);
+            $this->assertSame(0, $preview['retained']);
+            $this->assertDatabaseCount('business_systemization_todo_audit_logs', 0);
+
+            $result = app(SystemizationTodoWorkbookImporter::class)
+                ->sync($path, (int) company_id(), user_id());
+            $this->assertSame(0, $result['created']);
+            $this->assertSame(1, $result['updated']);
+            $this->assertSame(0, $result['retained']);
+            $this->assertSame(1, SystemizationTodo::query()->count());
+
+            $todo->refresh();
+            $this->assertSame('收入', $todo->category);
+            $this->assertSame('平台收入核对', $todo->section);
+            $this->assertSame('平台收入核对（已更新）', $todo->title);
+            $this->assertDatabaseHas('business_systemization_todo_audit_logs', [
+                'company_id' => (int) company_id(),
+                'todo_id' => $todo->id,
+                'action' => 'import',
+            ]);
+
+            $event = $this->getJson(route('business.systemization-todos.history'))
+                ->assertOk()
+                ->json('events.0');
+            $this->assertSame('import', $event['action']);
+            $this->assertContains(
+                '待办事项：平台收入核对 → 平台收入核对（已更新）',
+                $event['changes']
+            );
+        } finally {
+            @unlink($path);
+        }
+    }
+
     public function test_excel_sync_splits_numbered_titles_and_keeps_attachment_on_first_item(): void
     {
         Storage::fake('uploads');