Add title to agent search progress notification

- title notifications with 'Agentic Search'/'Wyszukiwanie agentowe', etc.

└── apps
    └── editor
        └── src
            ├── features
            │   └── search-files
            │       └── search-modes
            │           └── perform-agent-search-mode
            │               ├── agents
            │               │   ├── antigravity.ts
            │               │   ├── claude.ts
            │               │   ├── codex.ts
            │               │   ├── cursor.ts
            │               │   ├── grok.ts
            │               │   ├── muse.ts
            │               │   └── opencode.ts
            │               ├── index.ts
            │               ├── types.ts
            │               └── utils.ts
            └── i18n
                └── translations
                    └── features
                        └── search-files.ts

Author: robertpiosik

apps/editor/src/features/search-files/search-modes/perform-agent-search-mode/index.ts

@@ -498,6 +498,7 @@ export const perform_agent_search_mode = async (params: {
           await vscode.window.withProgress(
             {
               location: vscode.ProgressLocation.Notification,
+              title: t('feature.search-files.title.agent'),
               cancellable: true
             },
             async (progress, token) => {