feat(campaign): Campaign milestone achievements - unlock visual badges at 25%, 50%, 75%, 100%

[Idrhas]

Display milestone achievement badges on campaign detail page when funding reaches 25%, 50%, 75%, and 100%. Each milestone shows a custom icon and celebratory animation.

[Muyideen-js]

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

Hi, I can fix this

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[Obetaebube3]

@Obetaebube3 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello, I would love to take on this issue. I'm a software engineer with over 4 years experience. and i'm confident I can resolve this issue

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[richiesplug]

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

I’m interested in taking this issue. I’ll review the existing implementation, identify the cause of the problem, and work on a clean solution while making sure I don’t introduce new issues.

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

[veloura-dev]

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

PLEASE MAINTAINER ..I BEG OF YOU PLEASE ASSIGN EXPECT PR ASAP PLEASE 🙏🙏

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

[drips-wave]

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

🧑‍💻 @veloura-dev: 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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