[Enhancement] Bulk moderation actions for reels

[techifydev1]

Summary

Enable efficient bulk moderation of reels through multi-select actions and keyboard shortcuts for faster queue processing.

Current State

Moderators must process reels one at a time, which is inefficient for high-volume moderation queues.

What We Want

1. Multi-select functionality supporting bulk hide/unhide operations
2. Shared reason input for bulk actions
3. Sequential fan-out pattern consistent with courses/users bulk tools
4. Progress toast notifications during bulk operations
5. Typed confirmation prompt for operations over 20 items
6. Keyboard navigation shortcuts (j/k move selection, x toggle, h hide)
7. Help popover documenting keyboard shortcuts

Technical Context

• Follow the same sequential fan-out pattern used in existing courses/users bulk tools
• Require typed confirmation when bulk action affects more than 20 items
• Keep hands-on-keyboard workflow for power users

Acceptance Criteria

• Implement multi-select UI for reels
• Add bulk hide/unhide actions with shared reason field
• Use sequential fan-out pattern for bulk operations
• Display progress toast during bulk operations
• Require typed confirmation for operations affecting 20+ items
• Implement keyboard shortcuts: j/k for navigation, x for toggle, h for hide
• Create help popover documenting all keyboard shortcuts
• Ensure consistency with existing bulk tools for courses/users

[Anieblin]

@Anieblin has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello Maintainer, I'd love to work on this issue

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

[enny791]

@enny791 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

please assign this to me, it's within my skillset

ℹ️ Repo Maintainers: To accept this application, review their application or assign @enny791 to this issue.

[aigbagbobila]

@aigbagbobila has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi Maintainer, can i resolve this. Kindly assign

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

[drips-wave]

Congratulations, @aigbagbobila! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @aigbagbobila: 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.

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@aigbagbobila's PR #449 was approved and merged by @zeemscript.

🏆 @aigbagbobila: You earned 35 FoxPoints for this contribution! Your current tier: Builder (1,025 total points). Track your full progress on GrantFox.

👏 Great work, @aigbagbobila! Keep contributing to Deen-Bridge.