fix: 修复文档转换与预览链路中的图片、文件名和错误处理问题

app/Jobs/ConvertDocumentToMarkdown.php

@@ -46,7 +46,8 @@ class ConvertDocumentToMarkdown implements ShouldQueue
 
             $markdownPath = $conversionService->saveMarkdownToFile(
                 $this->document,
-                $result['markdown']
+                $result['markdown'],
+                $result['media_files'] ?? []
             );
 
             $conversionService->updateDocumentMarkdown($this->document, $markdownPath);
@@ -56,36 +57,46 @@ class ConvertDocumentToMarkdown implements ShouldQueue
                 'document_title' => $this->document->title,
                 'markdown_path' => $markdownPath,
             ]);
-        } catch (\Exception $e) {
+        } catch (\Throwable $e) {
+            $exception = $this->normalizeException($e);
+
             Log::error('文档转换失败', [
                 'document_id' => $this->document->id,
                 'document_title' => $this->document->title,
                 'file_name' => $this->document->file_name,
                 'attempt' => $this->attempts(),
-                'error' => $e->getMessage(),
+                'error' => $exception->getMessage(),
             ]);
 
             if ($this->attempts() >= $this->tries) {
-                $conversionService->handleConversionFailure($this->document, $e);
+                $conversionService->handleConversionFailure($this->document, $exception);
             }
 
-            throw $e;
+            throw $exception;
         }
     }
 
     public function failed(\Throwable $exception): void
     {
+        $normalized = $this->normalizeException($exception);
+
         Log::error('文档转换任务最终失败', [
             'document_id' => $this->document->id,
             'document_title' => $this->document->title,
             'file_name' => $this->document->file_name,
-            'error' => $exception->getMessage(),
+            'error' => $normalized->getMessage(),
         ]);
 
         $conversionService = app(DocumentConversionService::class);
-        $conversionService->handleConversionFailure(
-            $this->document,
-            $exception instanceof \Exception ? $exception : new \Exception($exception->getMessage())
-        );
+        $conversionService->handleConversionFailure($this->document, $normalized);
+    }
+
+    protected function normalizeException(\Throwable $throwable): \Exception
+    {
+        if ($throwable instanceof \Exception) {
+            return $throwable;
+        }
+
+        return new \RuntimeException($throwable->getMessage(), 0, $throwable);
     }
 }