[FEATURE] Add search functionality for notes across all subjects

[Gitanshika]

Feature Description

Currently, users need to manually navigate through folders and subjects to find specific topics or notes. As the repository grows, locating content may become time-consuming.

Proposed Solution

Implement a search feature that allows users to quickly find notes, topics, and subjects across the repository.

Possible search targets:

Subject names (DSA, DBMS, OS, CN, etc.)
Topic names
Semester-wise content
Keywords within notes

Benefits
Faster navigation for students
Improved user experience
Easier access to revision material
Better scalability as more content is added

Expected Outcome

Users should be able to search for a topic and directly access the relevant notes instead of manually browsing multiple folders.

Additional Context

This feature would be especially helpful for students looking for specific concepts during exam preparation or quick revision.

[Gitanshika]

Hi @pushkarscripts

I am a GSSoC 2026 participant and would like to work on this feature. I have understood the requirements and would like to implement a search functionality for easier note discovery.

Could you please assign this issue to me?

Thank you!