feat: add file size validation in content workflow results

- Introduced a constant `MaxResultFileSize` to limit the size of result files to 10MB, preventing potential memory issues.
- Implemented file size checks before reading files in the `ContentWorkflowResults` function, ensuring that files exceeding the limit are handled gracefully with appropriate error messages.

These changes enhance the robustness of the content workflow by preventing excessive memory usage when processing large files.

Author: Gkrumbach07

components/backend/handlers/content.go

@@ -24,6 +24,9 @@ import (
 // Set by main during initialization
 var StateBaseDir string
 
+// MaxResultFileSize is the maximum size for result files to prevent memory issues
+const MaxResultFileSize = 10 * 1024 * 1024 // 10MB
+
 // Git operation functions - set by main package during initialization
 // These are set to the actual implementations from git package
 var (
@@ -699,14 +702,29 @@ func ContentWorkflowResults(c *gin.Context) {
 
 			for _, matchedPath := range matches {
 				relPath, _ := filepath.Rel(workspaceBase, matchedPath)
-				content, readErr := os.ReadFile(matchedPath)
-
+				
 				result := ResultFile{
 					DisplayName: displayName,
 					Path:        relPath,
 					Exists:      true,
 				}
 
+				// Check file size before reading
+				fileInfo, statErr := os.Stat(matchedPath)
+				if statErr != nil {
+					result.Error = fmt.Sprintf("Failed to stat file: %v", statErr)
+					results = append(results, result)
+					continue
+				}
+
+				if fileInfo.Size() > MaxResultFileSize {
+					result.Error = fmt.Sprintf("File too large (%d bytes, max %d)", fileInfo.Size(), MaxResultFileSize)
+					results = append(results, result)
+					continue
+				}
+
+				// Read file content
+				content, readErr := os.ReadFile(matchedPath)
 				if readErr != nil {
 					result.Error = fmt.Sprintf("Failed to read: %v", readErr)
 				} else {