fix: 添加对SVN目录的排除并改进错误处理

- 在文件搜索和检查点服务中排除.svn目录
- 改进SVN工具中的错误处理，确保错误信息正确显示

Author: ubuntutester202

src/services/checkpoints/excludes.ts

@@ -200,6 +200,7 @@ const getLfsPatterns = async (workspacePath: string) => {
 
 export const getExcludePatterns = async (workspacePath: string) => [
 	".git/",
+	".svn/",
 	...getBuildArtifactPatterns(),
 	...getMediaFilePatterns(),
 	...getCacheFilePatterns(),

src/services/search/file-search.ts

@@ -98,6 +98,8 @@ export async function executeRipgrepForFiles(
 		"-g",
 		"!**/.git/**",
 		"-g",
+		"!**/.svn/**",
+		"-g",
 		"!**/out/**",
 		"-g",
 		"!**/dist/**",

src/utils/svn.ts

@@ -479,7 +479,7 @@ export async function getSvnWorkingState(cwd: string): Promise<{
 							additionalInfo += `\n--- ${file} (${stats.isFile() ? "file" : "directory"}) ---\n`
 						}
 					} catch (error) {
-						additionalInfo += `\n--- ${file} (unable to read: ${error.message}) ---\n`
+						additionalInfo += `\n--- ${file} (unable to read: ${error instanceof Error ? error.message : String(error)}) ---\n`
 					}
 				}
 
@@ -601,6 +601,6 @@ export async function getSvnCommitInfoForMentions(revision: string, cwd: string)
 		return commitInfo
 	} catch (error) {
 		console.error("[DEBUG] Error getting SVN commit info for mentions:", error)
-		return `Error fetching SVN commit r${revision}: ${error.message}`
+		return `Error fetching SVN commit r${revision}: ${error instanceof Error ? error.message : String(error)}`
 	}
 }