[Contract] Implement get_lp_position in AMM

[GoSTEAN]

Description

Read-only query for LP token balance and pool share.

File: contracts/contracts/boxmeout/src/amm.rs

Acceptance Criteria

• Return LP token balance, share of pool, unrealized PnL
• Unit test

Priority

🟡 P2 — Medium

[utilityjnr]

@utilityjnr has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

i would like to work on this issue

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[soma-enyi]

@soma-enyi has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Gm Gm Maintainer @BOXMEOUT_STELLA!!!!
I will like to work on this issue!!!

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[bitstarkbridge]

@bitstarkbridge has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I’d like to work on this issue because it sits at the intersection of system design, financial logic, and secure contract architecture — areas I actively specialize in and enjoy building within. The problem requires careful handling of state transitions, precision math, and security constraints, which makes it both technically meaningful and impactful to the overall reliability of the protocol.

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[Chisom92]

@Chisom92 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hey there, I will be glad to get this issue fixed real quick..

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[GoodnessJohn]

@GoodnessJohn has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I would like to work on this issue.

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[drips-wave]

Congratulations, @Chisom92! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Chisom92: 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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