Remove unused imports in search-bar.ts

[yashrastogi]

What: The code health issue addressed was the presence of unused imports in src/app/components/search-bar/search-bar.ts. Specifically, Signal from ../../models/signal.model and of from rxjs were imported but not used within the file.

Why: Removing unused imports improves maintainability by reducing noise in the code and clarifying dependencies. It makes the code cleaner and easier to read for other developers.

Verification:

• Performed manual inspection of the codebase to confirm neither Signal nor of were used in search-bar.ts.
• Verified that Signal is mentioned in the code only in string literals (e.g., result.type === 'signal') or as part of other identifiers, not requiring the model import.
• Note: Environment-specific issues (missing .bin in node_modules and network timeouts) prevented running npm run build and npm test successfully. However, removing unused imports is a low-risk, safe refactoring.

Result: Cleaner code in search-bar.ts with only necessary dependencies imported.

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