Fix incorrect weighted loser stake slashing calculation

[dDevAhmed]

📚 Overview

The current staking settlement logic approximates loser raw stake using weighted ratios instead of actual stake totals.

This leads to incorrect economic outcomes.

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🌊 Drips Context

This issue fixes a core economic invariant of the protocol.

Incorrect slashing breaks:

• Fair reward distribution
• Economic integrity
• Trust in verification outcomes

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❗ Problem

Current logic:
claim.totalStakeAmount * loserWeighted / totalWeighted

This is incorrect when reputation multipliers differ.

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✅ Expected Behavior

• Track exact raw stake:
  • totalRawFor
  • totalRawAgainst
• Use exact loser raw stake in settlement

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🧠 Implementation Guidelines

• Modify staking structure to track per-side raw stake
• Update _calculateSettlement
• Add invariant tests for:
  • mixed reputation
  • uneven stake distribution

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✅ Acceptance Criteria

• Exact loser raw stake is used
• Rewards/slashes match expected math
• Invariant tests pass

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⏳ Complexity

High

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🏷 Labels

audit, protocol, high-priority, drips-wave

[Danielodingz]

@Danielodingz has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Hello maintainer, please can i work on this issue.

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

[mansory-01]

@mansory-01 has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Please can i be assigned to this?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @mansory-01 to this issue.

[TheDEV111]

@TheDEV111 has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Hi pls let me work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @TheDEV111 to this issue.