# Phase 5, Milestone 2: Governance Features

> Advanced governance capabilities

**Status**: ✅ Complete
**Priority**: Medium
**Crates**: `synor-governance`

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## Overview

Implement advanced governance features including parameter changes, protocol upgrades, emergency controls, and vesting management.

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## Tasks

### Task 2.1: Parameter Change Proposals
- [x] Define changeable parameters
- [x] Parameter bounds validation
- [x] Change execution logic
- [x] Rollback capability
- [x] Change history tracking

**Files:**
- `crates/synor-governance/src/parameters.rs`

**Governable Parameters:**
| Parameter | Min | Max | Default |
|-----------|-----|-----|---------|
| `block_time_ms` | 50 | 2000 | 100 |
| `max_block_size` | 100KB | 10MB | 1MB |
| `min_fee_rate` | 0 | 1000 | 1 |
| `k_parameter` | 8 | 64 | 18 |
| `pruning_depth` | 1000 | 100000 | 10000 |

### Task 2.2: Protocol Upgrade Mechanism
- [x] Upgrade proposal type
- [x] Binary hash verification
- [x] Activation height scheduling
- [x] Soft fork support
- [x] Hard fork coordination

**Files:**
- `crates/synor-governance/src/upgrade.rs`

**Upgrade Process:**
1. Proposal submitted with new version hash
2. Voting period (7 days)
3. If passed, queued with timelock (2 days)
4. Activation height set (future block)
5. Nodes upgrade before activation
6. Network activates new rules

### Task 2.3: Emergency Pause Capability
- [x] Emergency pause proposal
- [x] Reduced timelock for emergencies
- [x] Pause specific components
- [x] Resume mechanism
- [x] Guardian multi-sig fallback

**Files:**
- `crates/synor-governance/src/emergency.rs`

**Emergency Actions:**
| Action | Timelock | Required Votes |
|--------|----------|----------------|
| Pause Mempool | 1 hour | Guardian multi-sig |
| Pause Mining | 1 hour | Guardian multi-sig |
| Pause Contracts | 6 hours | 10% quorum |
| Full Pause | 12 hours | 15% quorum |

### Task 2.4: Vesting Schedule Management
- [x] Create vesting schedules
- [x] Cliff period support
- [x] Linear vesting calculation
- [x] Early termination (governance)
- [x] Vesting claims

**Files:**
- `crates/synor-governance/src/vesting.rs`

**Vesting Parameters:**
```rust
struct VestingSchedule {
    beneficiary: Address,
    total_amount: Amount,
    start_time: Timestamp,
    cliff_duration: Duration,
    vesting_duration: Duration,
    claimed: Amount,
}
```

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## Validation

### Validation Commands

```bash
# Run all governance tests
cargo test -p synor-governance

# Test parameter changes
cargo test -p synor-governance parameters

# Test upgrades
cargo test -p synor-governance upgrade

# Test emergency
cargo test -p synor-governance emergency

# Test vesting
cargo test -p synor-governance vesting
```

### Validation Agents

| Agent | Purpose |
|-------|---------|
| `code-reviewer` | Review governance features |
| `silent-failure-hunter` | Check edge cases |

### Feature Test Matrix

| Feature | Unit Tests | Integration Tests |
|---------|------------|-------------------|
| Parameters | 12 | 5 |
| Upgrades | 8 | 4 |
| Emergency | 10 | 6 |
| Vesting | 15 | 8 |

### Security Checks

- [ ] Parameter bounds enforced
- [ ] Upgrade hashes verified
- [ ] Emergency powers limited
- [ ] Vesting cannot be front-run
- [ ] Guardian keys secure

### Governance Attack Vectors

| Attack | Mitigation |
|--------|------------|
| Flash loan voting | Snapshot-based voting power |
| Governance takeover | High proposal threshold |
| Malicious upgrade | Binary hash verification + timelock |
| Treasury drain | Spending limits + multi-sig |

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## CLI Commands

```bash
# Parameter change
./target/release/synor gov propose param block_time_ms 200

# Protocol upgrade
./target/release/synor gov propose upgrade v2.0.0 <hash>

# Emergency pause
./target/release/synor gov propose emergency pause-contracts

# Vesting management
./target/release/synor gov vesting create <beneficiary> <amount> <duration>
./target/release/synor gov vesting claim
```

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## Acceptance Criteria

1. Parameter changes execute correctly
2. Upgrade proposals work end-to-end
3. Emergency pause functional
4. Vesting schedules manage correctly
5. All security checks implemented

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*Completed: January 2025*
