Adjust date regex whitespace matching in patch header normalization

- [Pasted text]

└── apps
    └── editor
        └── src
            ├── commands
            │   └── apply-response-command
            │       ├── apply-response-command.ts
            │       └── utils
            │           ├── preview
            │           │   └── preview.ts
            │           └── response-parser
            │               ├── index.ts
            │               ├── parsers
            │               │   ├── diff-parser
            │               │   │   ├── diff-parser.ts
            │               │   │   ├── helpers
            │               │   │   │   ├── index.ts
            │               │   │   │   └── patch-utils.ts
            │               │   │   ├── index.ts
            │               │   │   └── test
            │               │   │       └── diff-parser.spec.ts
            │               │   └── index.ts
            │               └── response-parser.ts
            ├── extension.ts
            ├── services
            │   ├── websocket-manager.ts
            │   └── websocket-server-process.ts
            └── views
                └── prompt
                    └── backend
                        ├── message-handlers
                        │   └── handle-patch-repair.ts
                        └── prompt-view-provider.ts

Author: robertpiosik

apps/editor/src/commands/apply-response-command/utils/response-parser/parsers/diff-parser/helpers/patch-utils.ts

@@ -5,7 +5,7 @@ export const normalize_header_line = (params: {
   line: string
   is_single_root: boolean
 }): string => {
-  const processed_line = params.line.replace(/\s+\d{4}-\d{2}-\d{2}.*$/, '')
+  const processed_line = params.line.replace(/\s\d{4}-\d{2}-\d{2}.*$/, '')
 
   if (processed_line.startsWith('--- ')) {
     let path_part = strip_quotes(processed_line.substring(4).trim())