feat: add admin functions for contract updates, pausing, and emergency mode

[malgus01]

Pull Request

Summary

This PR enhances the LiquidityManagerV2 contract with additional administrative controls. These functions give the owner the ability to update critical contracts, pause/unpause protocol operations, and enable emergency mode for pools when necessary.

Changes

• LiquidityManagerV2
  • Added updateVestingContract(newVestingContract):
    • Updates the vesting contract reference.
    • Includes zero address validation.
  • Added updateFactoryContract(newFactory):
    • Updates the factory contract reference.
    • Includes zero address validation.
  • Added pause():
    • Pauses contract operations using OpenZeppelin’s Pausable.
  • Added unpause():
    • Resumes contract operations.
  • Added enableEmergencyMode(poolId):
    • Enables emergency mode for a given pool.
• Added full Natspec comments for all new functions.
• Ran forge fmt for consistent formatting.

Motivation

• Provides flexibility to upgrade critical external contracts (vesting/factory).
• Improves protocol safety with the ability to pause/unpause operations in case of emergencies.
• Introduces emergency mode at the pool level for granular response to crises.
• Strengthens overall governance and operational resilience.

Next Steps

• Emit dedicated events for each admin action to improve transparency.
• Introduce role-based access (e.g., AccessControl) instead of onlyOwner for better governance distribution.
• Consider timelock or multisig for critical admin operations to reduce centralization risks.