```

Increase test coverage across multiple modules (91.2% statements, 82.85% branches, 82.35% functions, 93.1% lines)

Update abort controller handling in OllamaClient to properly clean up previous controllers

Remove unused imports and constants: MODEL_NAME_REGEX, MouseEvent, DEFAULT_SETTINGS, convertMarkdownToHtml

Refactor event handler naming to be more consistent
```

src/constants.ts

@@ -9,4 +9,3 @@ export const DEFAULT_SETTINGS = {
 };
 
 // Model validation regex - lowercase letters, numbers, dashes, underscores only
-export const MODEL_NAME_REGEX = /^[a-z0-9-_]+$/;