Governor: execute proposal

[bitfalt]

📋 Description

Close a proposal and execute its calldata once a simple majority is reached.

✅ Acceptance Criteria

• Entrypoint execute(proposal_id: u256)
• Revert if voting period not ended
• Revert if for_votes <= against_votes
• Emit ProposalExecuted(proposal_id)
• Execution is immediate (no timelock)

🧪 Testing

• Simulate 51 % majority → execution succeeds
• 50 % / 50 % → execution reverts
• 49 % / 51 % → execution reverts

[anihdev]

Gm boss a returning contributor, can I take this?

[evgongora]

@anihdev thank you for your interest in the project, the issue is yours.

[anihdev]

Hi! @evgongora, @bitfalt Working on task #118 (execute proposal).

Quick clarification: I see voting logic in the code but no proposal creation function. The cast_vote tries to read from a proposals map that's never populated. Should I implement proposal creation as part of this task, or does that functionality exist elsewhere and I'm missing the existing functionality? How are proposals currently being created and stored?

Also, The task specifies proposal_id: u256 but the current code uses u64. Should I update the existing code to use u256?