Fractional Ownership: Implement share consolidation

[LaGodxy]

Allow consolidation of multiple fractional shares.

[intelliDean]

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I'd like to work on this issue

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[Hallab7]

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I would like to work on this issue

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[dreamgene]

@dreamgene has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Kindly assign

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[drips-wave]

Congratulations, @dreamgene! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @dreamgene: 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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[drips-wave]

This issue has been completed by @dreamgene as part of the Stellar Wave Program's 4th Wave 🥳

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