// Package leader provides leader-specific context management duties for the SLURP system.
//
// This package implements the leader node responsibilities within the BZZZ cluster,
// where only the elected leader performs context generation, coordinates distributed
// operations, and manages cluster-wide contextual intelligence tasks. It integrates
// with the BZZZ election system to ensure consistent leadership and proper failover.
//
// Key Features:
//   - Leader-only context generation to prevent conflicts and ensure consistency
//   - Distributed context coordination across cluster nodes
//   - Context generation queue management and prioritization  
//   - Leader failover and state transfer for high availability
//   - Cluster-wide context synchronization and consistency
//   - Resource allocation and load balancing for context operations
//   - Inter-node communication for context distribution
//   - Health monitoring and cluster state management
//
// Core Components:
//   - ContextManager: Main leader interface for context management duties
//   - GenerationCoordinator: Coordinates context generation across cluster
//   - QueueManager: Manages context generation request queues
//   - FailoverManager: Handles leader failover and state transfer
//   - ClusterCoordinator: Manages cluster-wide operations
//   - HealthMonitor: Monitors cluster and context system health
//
// Integration Points:
//   - pkg/election: Leader election and state management
//   - pkg/dht: Distributed context storage and retrieval
//   - pkg/slurp/intelligence: Context generation engines
//   - pkg/slurp/distribution: Context distribution across cluster
//   - pkg/slurp/storage: Persistent context data management
//
// Example Usage:
//
//	manager := leader.NewContextManager(election, dht, intelligence, storage)
//	ctx := context.Background()
//	
//	// Check if this node is the leader
//	if manager.IsLeader() {
//	    // Request context generation (only leaders can fulfill this)
//	    req := &ContextGenerationRequest{
//	        UCXLAddress: "ucxl://project/src/main.go",
//	        FilePath: "/project/src/main.go",
//	        Priority: PriorityHigh,
//	        RequestedBy: "developer-node-1",
//	        Role: "developer",
//	    }
//	    
//	    err := manager.RequestContextGeneration(req)
//	    if err != nil {
//	        log.Fatal(err)
//	    }
//	    
//	    // Monitor generation progress
//	    status, err := manager.GetGenerationStatus()
//	    fmt.Printf("Active tasks: %d, Queued: %d\n", 
//	               status.ActiveTasks, status.QueuedTasks)
//	}
//	
//	// Non-leader nodes can request context generation from leader
//	if !manager.IsLeader() {
//	    result, err := manager.RequestFromLeader(req)
//	    if err != nil {
//	        log.Printf("Failed to request from leader: %v", err)
//	    }
//	}
//
// Leader Election Integration:
// The context manager automatically integrates with the BZZZ election system,
// responding to leadership changes, handling graceful transitions, and ensuring
// no context generation operations are lost during failover events. State
// transfer includes queued requests, active jobs, and coordination metadata.
//
// Context Generation Coordination:
// The leader coordinates context generation by:
// - Receiving requests from cluster nodes
// - Prioritizing and queuing generation tasks
// - Distributing workload across available resources
// - Ensuring no duplicate generation for the same context
// - Managing dependencies between related contexts
// - Coordinating with intelligence engines and storage systems
//
// High Availability Design:
// The system is designed for high availability with:
// - Automatic leader failover with minimal downtime
// - State replication and synchronization across nodes
// - Graceful degradation when leader is unavailable
// - Request queuing and replay during leadership transitions
// - Health monitoring and automatic recovery mechanisms
//
// Performance Characteristics:
// - O(log N) request routing and leader discovery
// - Batched context generation for efficiency
// - Parallel processing with configurable concurrency limits
// - Request deduplication and caching for performance
// - Background processing to minimize client wait times
// - Resource-aware load balancing across cluster nodes
//
// Consistency Guarantees:
// The leader ensures consistency by:
// - Single point of control for context generation
// - Atomic updates to context state across the cluster
// - Ordered processing of conflicting context updates
// - Vector clock synchronization for temporal consistency
// - Conflict detection and resolution for concurrent changes
//
// Security Integration:
// All leader operations integrate with the BZZZ security model:
// - Role-based authorization for context generation requests
// - Encrypted communication between leader and cluster nodes
// - Audit logging of all leadership decisions and actions
// - Secure state transfer during failover events
// - Access control enforcement for cluster coordination
package leader