Implement efficient search index for offline search capability

[RUKAYAT-CODER]

Background

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Description

Build searchable index of content (courses, users) for efficient offline search without hitting API.

Current Behavior

Search requires API calls, no offline search

Expected Behavior

Indexed local search working offline

Impact

📱 Search works offline
⚡ Instant search results
🔍 Better search UX

Acceptance Criteria

• Build search index on app start
• Implement efficient search algorithm
• SearchResults instant (<100ms)
• Test offline search
• Manage index size
• Update index on data changes
• Document search indexing

Implementation Hints

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Related Issues

• Implement Offline Mode and Data Sync #21
• Store Missing Persistence #97
• No Accessibility Testing #91

[SamixYasuke]

@SamixYasuke has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi maintainer, I’d like to work on this by building a lightweight local search indexing system for courses and users, enabling fast offline queries with instant results, automatic index updates on data changes, and optimized index storage to keep search responsive and efficient even without API access.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @SamixYasuke to this issue.

[mmorgsmorgan]

@mmorgsmorgan has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

i would like to work on this issue, assign it to me

ℹ️ Repo Maintainers: To accept this application, review their application or assign @mmorgsmorgan to this issue.

[drips-wave]

Congratulations, @mmorgsmorgan! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @mmorgsmorgan: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

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