✨ Added Search and Multi-Filter Functionality with Clear Button on Challenges Page

[Ishuuu1213]

This PR implements interactive search and filtering capabilities on the Challenges page to improve user experience and usability.

🔍 Features Implemented:
✅ Real-time Search: Users can now search for challenges by title or tag.

✅ Multi-Filter Support:

Filter by difficulty

Filter by language

Filter by completion status

✅ Combination of Filters is supported — all filters work together seamlessly.

✅ Clear Filters button added beside the search bar to reset all filters with a single click.

💅 UI Updates:
Adjusted layout using flexbox to place the Clear Filters button neatly to the right of the search input field.

Maintained responsive styling for consistent behavior across screen size

[greptile-apps]

Greptile Summary

This PR adds comprehensive search and filtering functionality to the Challenges page to enhance user experience. The implementation includes real-time search capabilities that allow users to find challenges by title, along with multi-filter support for difficulty, language/category, and completion status. All filters work together seamlessly, meaning users can combine search terms with multiple filter criteria.

The core functionality is implemented in pages/challenges.html using vanilla JavaScript with DOM manipulation. When users interact with the search input or filter dropdowns, the code iterates through all challenge cards and shows/hides them based on matching criteria. A "Clear Filters" button is positioned next to the search bar using flexbox layout, allowing users to reset all filters with a single click. The implementation also includes a visible counter that displays a "no results" message when no challenges match the current filters.

This change integrates well with the existing codebase architecture, which uses vanilla HTML/CSS/JavaScript without external dependencies. The filtering logic follows the project's pattern of direct DOM manipulation and maintains the responsive design principles already established in the application.

PR Description Notes:

• The description claims search works for both "title or tag" but the implementation only searches challenge titles
• Minor discrepancy between claimed functionality and actual implementation

Confidence score: 3/5

• Safety assessment: This PR has some implementation gaps that could affect user experience but won't break core functionality
• Reasoning: Missing CSS styles for new UI elements (Clear Filters button lacks .btn-secondary styling), search functionality doesn't match the claimed title+tag search, and an unnecessary empty div was added
• Files needing attention: styles/challenges.css needs proper CSS for new UI elements, and pages/challenges.html has minor code quality issues that should be addressed

_{3 files reviewed, 2 comments}

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[Ishuuu1213]

@adityai0 @faisal07777 sir please review it