phoenix protocol

[dforsten]

Phoenix Protocol

[Copilot]

Pull Request Overview

This PR implements a "Phoenix Protocol" for the HBBFT consensus engine to detect and recover from stalled consensus situations. The protocol monitors block production timing and performs controlled recovery by temporarily deferring outgoing messages, resetting the HoneyBadger consensus instance, and then resuming normal operation.

Key changes:

• Adds a periodic timer-based recovery mechanism that triggers when no new blocks are produced for a configurable time period
• Implements message deferral and storage capabilities to temporarily hold outgoing consensus messages during recovery
• Provides a reset mechanism for the underlying HoneyBadger consensus instance while preserving other state

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
crates/ethcore/src/engines/hbbft/hbbft_state.rs	Adds reset_honeybadger method to reset only the HoneyBadger instance while preserving network info
crates/ethcore/src/engines/hbbft/hbbft_engine.rs	Implements the Phoenix Protocol with timer-based monitoring, message deferral, and recovery logic

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