feat: 增强文档转换失败处理机制

- 新增 FixStuckDocuments 命令用于修复卡住的文档
- 支持批量检测和修复超时的转换任务
- 改进重试按钮，支持 failed/processing/pending 状态
- 在确认对话框中显示当前状态和错误信息
- 提供 dry-run 模式预览修复操作

app/Console/Commands/FixStuckDocuments.php

@@ -0,0 +1,103 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\Document;
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\DB;
+
+class FixStuckDocuments extends Command
+{
+    /**
+     * 命令签名
+     *
+     * @var string
+     */
+    protected $signature = 'documents:fix-stuck 
+                            {--timeout=30 : 超过多少分钟未完成视为卡住（默认30分钟）}
+                            {--status=processing : 要修复的状态（processing/pending）}
+                            {--dry-run : 仅显示将要修复的文档，不实际执行}';
+
+    /**
+     * 命令描述
+     *
+     * @var string
+     */
+    protected $description = '修复卡在转换中但实际已失败的文档';
+
+    /**
+     * 执行命令
+     */
+    public function handle(): int
+    {
+        $timeout = (int) $this->option('timeout');
+        $status = $this->option('status');
+        $dryRun = $this->option('dry-run');
+
+        $this->info("正在查找卡住的文档...");
+        $this->info("状态: {$status}");
+        $this->info("超时时间: {$timeout} 分钟");
+
+        // 查找卡住的文档
+        $stuckDocuments = Document::where('conversion_status', $status)
+            ->where('updated_at', '<', now()->subMinutes($timeout))
+            ->get();
+
+        if ($stuckDocuments->isEmpty()) {
+            $this->info('✓ 没有发现卡住的文档');
+            return self::SUCCESS;
+        }
+
+        $this->warn("发现 {$stuckDocuments->count()} 个卡住的文档:");
+        
+        // 显示文档列表
+        $tableData = $stuckDocuments->map(function ($doc) {
+            return [
+                'ID' => $doc->id,
+                '标题' => \Illuminate\Support\Str::limit($doc->title, 40),
+                '状态' => $doc->conversion_status,
+                '更新时间' => $doc->updated_at->format('Y-m-d H:i:s'),
+                '卡住时长' => $doc->updated_at->diffForHumans(),
+            ];
+        })->toArray();
+
+        $this->table(
+            ['ID', '标题', '状态', '更新时间', '卡住时长'],
+            $tableData
+        );
+
+        if ($dryRun) {
+            $this->info('');
+            $this->info('这是预览模式，没有实际修改任何数据');
+            $this->info('移除 --dry-run 选项以执行修复');
+            return self::SUCCESS;
+        }
+
+        // 确认操作
+        if (!$this->confirm('是否要将这些文档标记为失败状态？', true)) {
+            $this->info('操作已取消');
+            return self::SUCCESS;
+        }
+
+        // 修复文档
+        $fixed = 0;
+        foreach ($stuckDocuments as $document) {
+            try {
+                $document->update([
+                    'conversion_status' => 'failed',
+                    'conversion_error' => "转换任务超时（卡在 {$status} 状态超过 {$timeout} 分钟）",
+                ]);
+                $fixed++;
+                $this->line("✓ 已修复: [{$document->id}] {$document->title}");
+            } catch (\Exception $e) {
+                $this->error("✗ 修复失败: [{$document->id}] {$document->title} - {$e->getMessage()}");
+            }
+        }
+
+        $this->info('');
+        $this->info("修复完成！共修复 {$fixed} 个文档");
+        $this->info('现在可以在管理界面使用"重试转换"功能重新处理这些文档');
+
+        return self::SUCCESS;
+    }
+}

app/Filament/Resources/DocumentResource.php

@@ -226,12 +226,20 @@ class DocumentResource extends Resource
                     ->label('重试转换')
                     ->icon('heroicon-o-arrow-path')
                     ->color('warning')
-                    ->visible(fn (Document $record): bool => $record->conversion_status === 'failed')
+                    ->visible(fn (Document $record): bool => 
+                        in_array($record->conversion_status, ['failed', 'processing', 'pending'])
+                    )
                     ->requiresConfirmation()
                     ->modalHeading('重试文档转换')
                     ->modalDescription(fn (Document $record): string => 
                         '确定要重新转换文档 "' . $record->title . '" 吗？' . 
-                        ($record->conversion_error ? "\n\n上次失败原因：" . $record->conversion_error : '')
+                        "\n\n当前状态：" . match($record->conversion_status) {
+                            'failed' => '转换失败',
+                            'processing' => '转换中（可能卡住）',
+                            'pending' => '等待转换',
+                            default => $record->conversion_status,
+                        } .
+                        ($record->conversion_error ? "\n\n错误信息：" . $record->conversion_error : '')
                     )
                     ->modalSubmitActionLabel('确认重试')
                     ->action(function (Document $record) {