## Enhancement: Validate and Handle Invalid Brand/Type Query Parameters in CatalogSearch.razor

[nithyav2017]

Description

In the CatalogSearch.razor component, users navigate by clicking on catalog brand or type items, which redirects them to the search page with query parameters (e.g., ?brand=3&type=2). However, if a user manually modifies the URL to include invalid values like brand=-1 or type=-1, the component does not display an error or fallback behavior. This can lead to silent failures or empty search results.

Motivation

While the UI prevents invalid selections by design, users can still enter malformed URLs directly. Adding validation for these parameters would improve robustness and user experience, especially in edge cases or deep-linking scenarios.

Suggested Improvement

• Detect invalid values (-1) in query parameters during component initialization.
• Display a user-friendly message or reset to default filters.
• Optionally log or track invalid parameter usage for diagnostics.

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