Add Delegation & Proxy Functions to Governance Contract

[ONEONUORA]

Component: Contracts (Governance) | Effort: 4-5 days | Priority: MEDIUM

Current State

No vote delegation or proxy voting support.

Missing Functions

Delegation functions:

• delegate_votes() - Delegate voting power to another address
• undelegate_votes() - Remove delegation
• get_delegate() - Get who user delegated to
• get_voting_power() - Get total voting power (own + delegated)
• get_delegators() - Get list of addresses who delegated to user

Why This Matters

• Participation: Users can delegate if they can't vote
• Efficiency: Experts can vote on behalf of others
• Governance: Increases voter participation
• Standard: Most governance systems support delegation

Tasks

• Add delegation storage (delegator -> delegate mapping)
• Implement delegate_votes() function
  • Store delegation
  • Emit VotesDelegated event
• Add undelegate_votes() function
• Implement get_voting_power() calculation
  • Own tokens + delegated tokens
• Add get_delegate() view function
• Implement get_delegators() view
• Update vote() to use voting power
• Add delegation history tracking
• Add tests for delegation scenarios
• Document delegation system

Acceptance Criteria

• Users can delegate voting power
• Voting power calculated correctly
• Delegates can vote with delegated power
• Delegation can be revoked
• Tests cover delegation scenarios
• Documentation explains delegation