Timelock Security Implementation

Design a secure timelock implementation for this protocol:

Protocol Functions to Protect:
${{PROTECTED_FUNCTIONS}}

Current Governance Structure: ${{GOVERNANCE_STRUCTURE}}
Required Delay Periods: ${{DELAY_PERIODS}}

Provide:
1. Timelock architecture design
2. Security considerations:
   - Minimum delay requirements
   - Grace period handling
   - Queue/execute/cancel flows
3. Access control integration
4. Multi-sig compatibility
5. Emergency bypass mechanisms
6. Upgrade path security
7. Implementation code examples
8. Event emission for monitoring
9. Frontend integration guide
10. Testing recommendations

Include OpenZeppelin TimelockController integration guidance.