ruvnet--ruflo/v3/implementation/migration/v3-migration-roadmap.md

Claude-Flow v3 Migration Roadmap

Project: Claude-Flow v2.x → v3.0 Migration Timeline: 20 weeks (5 months) Team Size: 2-3 core developers + community contributors Start Date: 2026-01-06 (planned) Target Release: 2026-06-01

---

Table of Contents

1. Overview
2. Phase Breakdown
3. Sprint Details
4. Team Structure
5. Risk Management
6. Success Criteria
7. Appendices

---

Overview

Vision

Transform Claude-Flow from a monolithic orchestration system into a modular, agentic-flow-native platform with clear domain boundaries, plugin extensibility, and superior performance.

Key Objectives

1. Simplify: Reduce codebase by 40% (130k → 78k lines)
2. Modularize: Organize by domain (DDD), not technical layer
3. Extend: Plugin system for optional features
4. Integrate: Native agentic-flow foundation
5. Optimize: 5x performance improvement on key operations
6. Maintain: 100% feature parity with v2.x

Scope

In Scope:

• Core domains: agent-lifecycle, task-execution, memory-management, coordination
• Plugin system architecture
• MCP server v3 with enhanced tools
• CLI v3 (MCP-first)
• Migration tooling and guides
• Comprehensive documentation

Out of Scope (Defer to v3.1+):

• Distributed multi-node deployment
• GraphQL API
• Web UI
• Multi-tenancy
• Advanced observability (OpenTelemetry)

Principles

1. Parallel Development: v2 maintenance and v3 development run in parallel
2. Incremental Delivery: Working software every sprint
3. Test-Driven: Write tests first, then implementation
4. Documentation-First: Update docs before code
5. Community Involvement: Open design process, accept contributions

---

Phase Breakdown

Phase 1: Foundation         [Weeks 1-4]   ████░░░░░░░░░░░░░░░░
Phase 2: Core Domains       [Weeks 5-12]  ░░░░████████░░░░░░░░
Phase 3: Plugin System      [Weeks 13-16] ░░░░░░░░░░░░████░░░░
Phase 4: Integration        [Weeks 17-20] ░░░░░░░░░░░░░░░░████

Phase 1: Foundation (Weeks 1-4)

Goal: Establish v3 architecture foundation

Deliverables:

• src-v3/ directory structure
• Shared kernel (types, events, errors)
• Infrastructure layer (event-bus, logger, persistence)
• Plugin system core
• Testing framework (Vitest)
• CI/CD for v3

Key Metrics:

• Foundation code: ~5,000 lines
• Test coverage: >90%
• Build time: <10s
• All foundation tests passing

Phase 2: Core Domains (Weeks 5-12)

Goal: Implement four core bounded contexts

Deliverables:

• Agent Lifecycle domain (weeks 5-6)
• Task Execution domain (weeks 7-8)
• Memory Management domain (weeks 9-10)
• Coordination Engine (weeks 11-12)

Key Metrics:

• Each domain: ~10,000 lines
• Total core: ~40,000 lines
• Test coverage: >85% per domain
• Integration tests for cross-domain

Phase 3: Plugin System (Weeks 13-16)

Goal: Extract specialized features as plugins

Deliverables:

• HiveMind plugin (week 13)
• Maestro plugin (week 14)
• Neural plugin (week 15)
• Enterprise plugin (week 16)

Key Metrics:

• Each plugin: ~5,000 lines
• Plugin loading: <100ms
• Backward compatibility maintained

Phase 4: Integration & Release (Weeks 17-20)

Goal: Test, optimize, document, release

Deliverables:

• End-to-end testing (week 17)
• Performance optimization (week 18)
• Migration guide and tooling (week 19)
• Beta release and final adjustments (week 20)

Key Metrics:

• All features migrated
• Performance targets met
• Documentation complete
• Beta testers satisfied

---

Sprint Details

Sprint 1 (Week 1): Project Setup & Shared Kernel

Objectives:

1. Set up v3 development environment
2. Create directory structure
3. Implement shared kernel types
4. Set up testing infrastructure

Tasks:

Day 1-2: Environment Setup

# Create v3 branch
git checkout -b v3-development

# Create directory structure
mkdir -p src-v3/{shared-kernel,infrastructure,agent-lifecycle,task-execution,memory-management,coordination}

# Set up package.json for v3
cp package.json package-v3.json
# Update scripts for dual build

Day 3-4: Shared Kernel

// src-v3/shared-kernel/types/
- agent-types.ts        // AgentId, AgentType, AgentStatus
- task-types.ts         // TaskId, TaskType, TaskStatus
- memory-types.ts       // MemoryEntry, MemoryQuery
- event-types.ts        // DomainEvent base classes

// src-v3/shared-kernel/events/
- agent-events.ts       // AgentSpawned, AgentTerminated
- task-events.ts        // TaskCreated, TaskCompleted
- system-events.ts      // SystemStarted, SystemShutdown

// src-v3/shared-kernel/errors/
- domain-errors.ts      // DomainError base class
- application-errors.ts // ValidationError, NotFoundError

Day 5: Testing Setup

# Install Vitest
npm install -D vitest vite @vitest/ui

# Create vitest.config.ts
# Set up test utilities
# Create first test: shared-kernel.test.ts

Deliverables:

• Branch v3-development created
• Directory structure complete
• 50+ shared types defined
• 20+ event classes defined
• 10+ error classes defined
• Testing framework operational
• First tests passing (>90% coverage)

Success Criteria:

npm run test              # All tests pass
npm run typecheck         # No TypeScript errors
npm run lint              # No linting errors

---

Sprint 2 (Week 2): Infrastructure Layer

Objectives:

1. Event bus implementation
2. Logging service
3. Persistence layer
4. Configuration management

Tasks:

Event Bus (Day 1-2)

// src-v3/infrastructure/event-bus/event-bus.ts
export class EventBus implements IEventBus {
  private handlers = new Map<string, EventHandler[]>();

  emit(event: DomainEvent): void {
    const handlers = this.handlers.get(event.type) || [];
    handlers.forEach(handler => handler(event));
  }

  on(eventType: string, handler: EventHandler): void {
    const handlers = this.handlers.get(eventType) || [];
    handlers.push(handler);
    this.handlers.set(eventType, handlers);
  }

  // off, once, etc.
}

// Tests
- event-bus.test.ts
- event-handler.test.ts

Logging Service (Day 2-3)

// src-v3/infrastructure/logging/logger.ts
export class Logger implements ILogger {
  constructor(
    private config: LogConfig,
    private transports: ILogTransport[]
  ) {}

  info(message: string, meta?: any): void;
  warn(message: string, meta?: any): void;
  error(message: string, error?: Error): void;
  debug(message: string, meta?: any): void;
}

// Transports
- ConsoleTransport
- FileTransport
- StructuredLogTransport (JSON)

// Tests
- logger.test.ts
- transports.test.ts

Persistence Layer (Day 3-4)

// src-v3/infrastructure/persistence/
- connection-pool.ts    // Database connection pooling
- migrations.ts         // Schema migrations
- repositories/
  - base-repository.ts  // Generic repository pattern

// Tests
- connection-pool.test.ts
- migrations.test.ts
- base-repository.test.ts

Configuration (Day 5)

// src-v3/infrastructure/config/config-manager.ts
export class ConfigManager {
  private config: ClaudeFlowConfig;

  load(path?: string): Promise<void>;
  get<T>(key: string): T;
  set(key: string, value: any): void;
  validate(): ValidationResult;
}

// Config schema
- config-schema.ts
- default-config.ts

// Tests
- config-manager.test.ts
- config-validation.test.ts

Deliverables:

• EventBus with pub/sub
• Logger with multiple transports
• Connection pool for SQLite
• ConfigManager with validation
• All infrastructure tests passing (>90% coverage)

---

Sprint 3 (Week 3): Plugin System Core

Objectives:

1. Plugin interface definition
2. Plugin loader
3. Plugin lifecycle management
4. Example plugin

Plugin Interface (Day 1)

// src-v3/infrastructure/plugins/plugin-interface.ts
export interface ClaudeFlowPlugin {
  readonly name: string;
  readonly version: string;
  readonly dependencies?: string[];

  initialize(context: PluginContext): Promise<void>;
  shutdown(): Promise<void>;

  // Optional hooks
  registerAgentTypes?(): AgentTypeDefinition[];
  registerTaskTypes?(): TaskTypeDefinition[];
  registerMCPTools?(): MCPTool[];
  registerCLICommands?(): Command[];
  registerMemoryBackends?(): MemoryBackendFactory[];
}

export interface PluginContext {
  eventBus: IEventBus;
  logger: ILogger;
  config: ConfigManager;
  services: {
    agentService?: AgentLifecycleService;
    taskService?: TaskExecutionService;
    memoryService?: MemoryService;
  };
}

Plugin Loader (Day 2-3)

// src-v3/infrastructure/plugins/plugin-loader.ts
export class PluginLoader {
  private plugins = new Map<string, ClaudeFlowPlugin>();
  private initialized = new Set<string>();

  async loadPlugin(plugin: ClaudeFlowPlugin): Promise<void> {
    // Validate plugin
    this.validatePlugin(plugin);

    // Check dependencies
    await this.checkDependencies(plugin);

    // Initialize plugin
    await plugin.initialize(this.createContext());

    // Register plugin
    this.plugins.set(plugin.name, plugin);
    this.initialized.add(plugin.name);

    this.logger.info(`Plugin loaded: ${plugin.name}`);
  }

  async unloadPlugin(name: string): Promise<void> {
    const plugin = this.plugins.get(name);
    if (!plugin) return;

    // Shutdown plugin
    await plugin.shutdown();

    // Unregister
    this.plugins.delete(name);
    this.initialized.delete(name);
  }

  getPlugin(name: string): ClaudeFlowPlugin | undefined;
  listPlugins(): ClaudeFlowPlugin[];
}

Example Plugin (Day 4)

// src-v3/plugins/example/example-plugin.ts
export class ExamplePlugin implements ClaudeFlowPlugin {
  readonly name = 'example';
  readonly version = '1.0.0';

  async initialize(context: PluginContext): Promise<void> {
    context.logger.info('Example plugin initializing...');

    // Register custom agent type
    context.services.agentService?.registerAgentType({
      type: 'example-agent',
      capabilities: {/* ... */}
    });

    // Subscribe to events
    context.eventBus.on('task:created', this.handleTaskCreated);
  }

  async shutdown(): Promise<void> {
    // Cleanup
  }

  registerMCPTools(): MCPTool[] {
    return [{
      name: 'example/hello',
      description: 'Example tool',
      handler: async () => ({ message: 'Hello from plugin!' })
    }];
  }

  private handleTaskCreated(event: TaskCreated): void {
    // Handle event
  }
}

Tests (Day 5)

// plugin-loader.test.ts
describe('PluginLoader', () => {
  it('should load plugin successfully');
  it('should validate plugin interface');
  it('should check dependencies');
  it('should handle initialization errors');
  it('should unload plugin cleanly');
  it('should prevent duplicate plugins');
});

// example-plugin.test.ts
describe('ExamplePlugin', () => {
  it('should initialize correctly');
  it('should register agent types');
  it('should provide MCP tools');
  it('should handle events');
});

Deliverables:

• Plugin interface defined
• PluginLoader implementation
• Example plugin working
• Plugin tests (>85% coverage)
• Plugin developer guide

---

Sprint 4 (Week 4): CI/CD & Documentation

Objectives:

1. Set up CI/CD pipeline for v3
2. Documentation structure
3. API documentation generation
4. Migration planning

CI/CD Setup (Day 1-2)

# .github/workflows/v3-ci.yml
name: Claude-Flow v3 CI

on:
  push:
    branches: [v3-development]
  pull_request:
    branches: [v3-development]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: actions/setup-node@v3
        with:
          node-version: '20'

      - name: Install dependencies
        run: npm ci

      - name: Type check
        run: npm run typecheck:v3

      - name: Lint
        run: npm run lint:v3

      - name: Test
        run: npm run test:v3

      - name: Coverage
        run: npm run coverage:v3

  build:
    runs-on: ubuntu-latest
    steps:
      - name: Build v3
        run: npm run build:v3

      - name: Package
        run: npm pack

  benchmark:
    runs-on: ubuntu-latest
    steps:
      - name: Run benchmarks
        run: npm run benchmark:v3

      - name: Compare with v2
        run: npm run benchmark:compare

Documentation (Day 3-4)

docs/
├── v3/
│   ├── README.md                 # v3 overview
│   ├── getting-started.md        # Quick start guide
│   ├── architecture/
│   │   ├── overview.md
│   │   ├── domains.md            # Domain descriptions
│   │   ├── plugin-system.md
│   │   └── adrs/                 # Architecture decisions
│   ├── guides/
│   │   ├── agent-lifecycle.md
│   │   ├── task-execution.md
│   │   ├── memory-management.md
│   │   ├── plugin-development.md
│   │   └── migration-from-v2.md
│   ├── api/
│   │   ├── mcp-tools.md          # MCP tool reference
│   │   ├── cli-commands.md       # CLI reference
│   │   └── typescript-api.md     # Programmatic API
│   └── contributing/
│       ├── setup.md
│       ├── coding-standards.md
│       └── testing.md

API Documentation (Day 4-5)

# Install TypeDoc
npm install -D typedoc

# Generate API docs
npx typedoc --out docs/api src-v3/

# Generate MCP tool schema
npm run mcp:generate-schema

Migration Planning (Day 5)

# docs/v3/guides/migration-from-v2.md

## Overview
Step-by-step guide for migrating from v2 to v3

## Breaking Changes
- [List all breaking changes]

## Migration Checklist
- [ ] Update configuration file
- [ ] Migrate custom agents
- [ ] Update CLI scripts
- [ ] Migrate data
- [ ] Test thoroughly

## Automated Migration Tool
```bash
npx claude-flow migrate v2-to-v3

Common Issues

[Troubleshooting guide]

**Deliverables:**
- [ ] CI/CD pipeline running
- [ ] Documentation structure complete
- [ ] API docs auto-generated
- [ ] Migration guide drafted
- [ ] Benchmarking suite set up

**Phase 1 Complete! 🎉**

At this point, we have:
- ✅ Solid foundation for v3
- ✅ Shared kernel types and events
- ✅ Infrastructure layer
- ✅ Plugin system core
- ✅ Testing and CI/CD
- ✅ Documentation framework

**Checkpoint Metrics:**
- Lines of code: ~5,000
- Test coverage: >90%
- Build time: <10s
- CI/CD: Green
- Documentation: 70% complete

---

### Sprints 5-6 (Weeks 5-6): Agent Lifecycle Domain

**Goal:** Implement complete agent lifecycle management

**Domain Model (Sprint 5, Day 1-2)**
```typescript
// src-v3/agent-lifecycle/domain/models/agent.ts
export class Agent extends AggregateRoot {
  private constructor(
    readonly id: AgentId,
    private type: AgentType,
    private status: AgentStatus,
    private capabilities: AgentCapabilities,
    private metrics: AgentMetrics
  ) {
    super();
  }

  static create(template: AgentTemplate): Agent {
    const agent = new Agent(
      AgentId.generate(),
      template.type,
      AgentStatus.Initializing,
      template.capabilities,
      AgentMetrics.initial()
    );

    agent.addDomainEvent(new AgentCreated(agent.id, agent.type));
    return agent;
  }

  spawn(): void {
    if (this.status !== AgentStatus.Initializing) {
      throw new InvalidStateTransition('Cannot spawn non-initializing agent');
    }

    this.status = AgentStatus.Idle;
    this.addDomainEvent(new AgentSpawned(this.id, new Date()));
  }

  assignTask(taskId: TaskId): void {
    if (this.status !== AgentStatus.Idle) {
      throw new AgentNotAvailable(this.id);
    }

    this.status = AgentStatus.Busy;
    this.addDomainEvent(new TaskAssignedToAgent(this.id, taskId));
  }

  completeTask(): void {
    this.status = AgentStatus.Idle;
    this.metrics.tasksCompleted++;
    this.addDomainEvent(new AgentTaskCompleted(this.id));
  }

  terminate(): void {
    this.status = AgentStatus.Terminated;
    this.addDomainEvent(new AgentTerminated(this.id, new Date()));
  }

  reportHealth(): AgentHealth {
    return new AgentHealth(
      this.id,
      this.calculateHealthScore(),
      this.metrics,
      new Date()
    );
  }

  private calculateHealthScore(): number {
    // Calculate based on metrics
    const successRate = this.metrics.tasksCompleted /
      (this.metrics.tasksCompleted + this.metrics.tasksFailed);

    return successRate * this.metrics.uptime / this.metrics.totalTime;
  }
}

Repository Interface (Sprint 5, Day 2-3)

// src-v3/agent-lifecycle/domain/interfaces/agent-repository.ts
export interface IAgentRepository {
  save(agent: Agent): Promise<void>;
  findById(id: AgentId): Promise<Agent | null>;
  findByType(type: AgentType): Promise<Agent[]>;
  findByStatus(status: AgentStatus): Promise<Agent[]>;
  findAll(): Promise<Agent[]>;
  delete(id: AgentId): Promise<void>;
}

Application Service (Sprint 5, Day 3-5)

// src-v3/agent-lifecycle/application/services/agent-lifecycle-service.ts
export class AgentLifecycleService {
  constructor(
    private agentRepository: IAgentRepository,
    private agenticFlowClient: IAgenticFlowClient,
    private eventBus: IEventBus,
    private logger: ILogger
  ) {}

  async spawnAgent(template: AgentTemplate): Promise<AgentId> {
    this.logger.info('Spawning agent', { type: template.type });

    // Create domain model
    const agent = Agent.create(template);

    // Use agentic-flow to spawn actual agent
    await this.agenticFlowClient.spawnAgent({
      id: agent.id.value,
      type: template.type,
      capabilities: template.capabilities
    });

    // Spawn in domain
    agent.spawn();

    // Save to repository
    await this.agentRepository.save(agent);

    // Publish domain events
    agent.getDomainEvents().forEach(event => {
      this.eventBus.emit(event);
    });

    this.logger.info('Agent spawned', { agentId: agent.id.value });

    return agent.id;
  }

  async terminateAgent(agentId: AgentId): Promise<void> {
    const agent = await this.agentRepository.findById(agentId);
    if (!agent) {
      throw new AgentNotFoundError(agentId);
    }

    // Terminate in agentic-flow
    await this.agenticFlowClient.terminateAgent(agentId.value);

    // Terminate in domain
    agent.terminate();

    // Save state
    await this.agentRepository.save(agent);

    // Publish events
    agent.getDomainEvents().forEach(event => {
      this.eventBus.emit(event);
    });
  }

  async getAgentHealth(agentId: AgentId): Promise<AgentHealth> {
    const agent = await this.agentRepository.findById(agentId);
    if (!agent) {
      throw new AgentNotFoundError(agentId);
    }

    return agent.reportHealth();
  }

  async scaleAgentPool(poolId: string, targetSize: number): Promise<void> {
    // Implementation for pool scaling
  }
}

Infrastructure Repository (Sprint 6, Day 1-2)

// src-v3/agent-lifecycle/infrastructure/repositories/agent-repository.ts
export class AgentRepository implements IAgentRepository {
  constructor(
    private db: Database,
    private mapper: AgentMapper
  ) {}

  async save(agent: Agent): Promise<void> {
    const data = this.mapper.toPersistence(agent);

    await this.db.run(`
      INSERT OR REPLACE INTO agents (
        id, type, status, capabilities, metrics, created_at, updated_at
      ) VALUES (?, ?, ?, ?, ?, ?, ?)
    `, [
      data.id,
      data.type,
      data.status,
      JSON.stringify(data.capabilities),
      JSON.stringify(data.metrics),
      data.createdAt,
      data.updatedAt
    ]);
  }

  async findById(id: AgentId): Promise<Agent | null> {
    const row = await this.db.get(`
      SELECT * FROM agents WHERE id = ?
    `, [id.value]);

    if (!row) return null;

    return this.mapper.toDomain(row);
  }

  // ... other methods
}

// Mapper
export class AgentMapper {
  toPersistence(agent: Agent): AgentPersistence {
    // Map domain model to persistence model
  }

  toDomain(data: AgentPersistence): Agent {
    // Reconstruct domain model from data
  }
}

API Layer - CLI (Sprint 6, Day 2-3)

// src-v3/agent-lifecycle/api/cli/spawn-agent-command.ts
export class SpawnAgentCommand implements Command {
  constructor(
    private agentService: AgentLifecycleService,
    private outputter: IOutputter
  ) {}

  async execute(args: SpawnAgentArgs): Promise<void> {
    const spinner = this.outputter.spinner('Spawning agent...');

    try {
      const template = this.createTemplate(args);
      const agentId = await this.agentService.spawnAgent(template);

      spinner.succeed(`Agent spawned: ${agentId.value}`);

      this.outputter.table([
        ['Agent ID', agentId.value],
        ['Type', template.type],
        ['Status', 'idle'],
        ['Capabilities', template.capabilities.join(', ')]
      ]);
    } catch (error) {
      spinner.fail('Failed to spawn agent');
      throw error;
    }
  }

  private createTemplate(args: SpawnAgentArgs): AgentTemplate {
    return {
      type: args.type as AgentType,
      capabilities: this.parseCapabilities(args.capabilities),
      // ... more fields
    };
  }
}

API Layer - MCP (Sprint 6, Day 3-4)

// src-v3/agent-lifecycle/api/mcp/agent-tools.ts
export function createAgentTools(
  agentService: AgentLifecycleService
): MCPTool[] {
  return [
    {
      name: 'agent/spawn',
      description: 'Spawn a new agent',
      inputSchema: {
        type: 'object',
        properties: {
          type: {
            type: 'string',
            enum: ['researcher', 'coder', 'analyst', /* ... */]
          },
          capabilities: {
            type: 'array',
            items: { type: 'string' }
          }
        },
        required: ['type']
      },
      handler: async (input, context) => {
        const template = this.parseTemplate(input);
        const agentId = await agentService.spawnAgent(template);

        return {
          agentId: agentId.value,
          status: 'spawned'
        };
      }
    },

    {
      name: 'agent/terminate',
      description: 'Terminate an agent',
      inputSchema: {
        type: 'object',
        properties: {
          agentId: { type: 'string' }
        },
        required: ['agentId']
      },
      handler: async (input) => {
        await agentService.terminateAgent(AgentId.from(input.agentId));
        return { status: 'terminated' };
      }
    },

    {
      name: 'agent/health',
      description: 'Get agent health',
      inputSchema: {
        type: 'object',
        properties: {
          agentId: { type: 'string' }
        },
        required: ['agentId']
      },
      handler: async (input) => {
        const health = await agentService.getAgentHealth(
          AgentId.from(input.agentId)
        );

        return health.toJSON();
      }
    }
  ];
}

Tests (Sprint 6, Day 4-5)

// Domain tests
describe('Agent', () => {
  it('should create agent from template');
  it('should spawn successfully');
  it('should transition to busy when task assigned');
  it('should return to idle when task completed');
  it('should calculate health score correctly');
  it('should emit domain events');
});

// Service tests
describe('AgentLifecycleService', () => {
  it('should spawn agent via agentic-flow');
  it('should save agent to repository');
  it('should publish domain events');
  it('should handle spawn errors');
  it('should terminate agent cleanly');
});

// Integration tests
describe('Agent Lifecycle Integration', () => {
  it('should spawn, assign task, and terminate agent');
  it('should track agent metrics correctly');
  it('should handle concurrent spawns');
});

Deliverables (Sprints 5-6):

• Agent domain model complete
• AgentLifecycleService implemented
• AgentRepository with SQLite backend
• CLI commands: spawn, terminate, list, health
• MCP tools: agent/spawn, agent/terminate, agent/health
• Comprehensive tests (>85% coverage)
• Integration with agentic-flow

---

Sprints 7-8 (Weeks 7-8): Task Execution Domain

[Similar detailed breakdown for task execution domain]

---

Sprints 9-10 (Weeks 9-10): Memory Management Domain

[Similar detailed breakdown for memory domain]

---

Sprints 11-12 (Weeks 11-12): Coordination Engine

[Similar detailed breakdown for coordination]

---

Team Structure

Core Team (2-3 developers)

Architect (1)

• Define architecture
• Review PRs
• Make technical decisions
• Guide implementation

Backend Developer (1-2)

• Implement domains
• Write tests
• Performance optimization
• Integration with agentic-flow

DevOps/Infrastructure (0.5)

• CI/CD setup
• Build optimization
• Deployment automation
• Monitoring

Community Contributors

Documentation (2-3)

• Write guides
• API documentation
• Examples
• Migration guides

Testing (2-3)

• Write tests
• Performance testing
• Integration testing
• Bug fixes

Plugins (5-10)

• Develop community plugins
• Test plugin system
• Provide feedback

---

Risk Management

Technical Risks

Risk	Probability	Impact	Mitigation
agentic-flow breaking changes	Medium	High	Pin version, maintain adapter layer
Performance regression	Low	High	Continuous benchmarking
Migration complexity	High	Medium	Automated tools, gradual rollout
Plugin system bugs	Medium	Medium	Extensive testing, beta program
Data migration failures	Low	Critical	Backup/restore, rollback plan

Project Risks

Risk	Probability	Impact	Mitigation
Scope creep	High	Medium	Strict prioritization, defer to v3.1
Resource shortage	Medium	High	Community involvement, phased delivery
Timeline slippage	Medium	Medium	Buffer time, cut scope if needed
Adoption resistance	Low	High	Clear benefits, migration support

---

Success Criteria

Functional

• All v2 features in v3
• Agent spawn/terminate/scale working
• Task creation/execution/monitoring working
• Memory store/retrieve/query working
• Multi-agent coordination working
• MCP tools fully functional
• CLI commands fully functional

Performance

• Agent spawn <100ms (vs 500ms in v2)
• Task assignment <10ms (vs 50ms in v2)
• Memory query <5ms indexed
• CLI command response <200ms
• Throughput 100+ tasks/minute

Quality

• Test coverage >85%
• Type coverage 100%
• Zero any types
• File size <500 lines average
• Cyclomatic complexity <15

Adoption

• Migration guide complete
• 10+ beta testers successful
• 3+ community plugins
• 100+ GitHub stars
• Positive community feedback

---

Appendices

Appendix A: Code Size Reduction Plan

Current v2:

• Total: ~130,000 lines
• CLI: ~30,000 lines
• Core: ~25,000 lines
• Agents: ~15,000 lines
• Swarm: ~20,000 lines
• MCP: ~10,000 lines
• Specialized: ~30,000 lines

Target v3:

• Total: ~78,000 lines (40% reduction)
• Shared Kernel: ~5,000 lines
• Infrastructure: ~8,000 lines
• Agent Lifecycle: ~12,000 lines
• Task Execution: ~12,000 lines
• Memory Management: ~10,000 lines
• Coordination: ~11,000 lines
• Plugins (separate): ~20,000 lines

Reduction Strategies:

1. Eliminate duplicate code (4 coordination systems → 1)
2. Leverage agentic-flow (reduce orchestration code)
3. Decompose large files (index.ts 108KB → multiple small files)
4. Remove dead code
5. Plugin-ize optional features

Appendix B: Performance Benchmarking

Benchmark Suite:

// benchmarks/agent-spawn.bench.ts
import { bench, describe } from 'vitest';

describe('Agent Spawn Performance', () => {
  bench('spawn single agent', async () => {
    await agentService.spawnAgent(template);
  });

  bench('spawn 10 agents parallel', async () => {
    await Promise.all(
      Array(10).fill(null).map(() =>
        agentService.spawnAgent(template)
      )
    );
  });

  bench('spawn 100 agents parallel', async () => {
    // ...
  });
});

// Run benchmarks
npm run benchmark
npm run benchmark:compare -- --base=v2 --compare=v3

Target Performance:

Operation	v2	v3 Target	Improvement
Agent spawn	500ms	<100ms	5x
Task assign	50ms	<10ms	5x
Memory query (indexed)	25ms	<5ms	5x
Swarm init (10 agents)	5s	<1s	5x

Appendix C: Migration Tooling

Automated Migration Script:

#!/bin/bash
# scripts/migrate-v2-to-v3.sh

# Backup v2 data
echo "Backing up v2 data..."
cp claude-flow.db claude-flow-v2-backup.db

# Migrate configuration
echo "Migrating configuration..."
node scripts/migrate-config.js

# Migrate database schema
echo "Migrating database..."
node scripts/migrate-database.js

# Validate migration
echo "Validating migration..."
node scripts/validate-migration.js

echo "Migration complete! Review logs at migration.log"

Migration Guide Template:

# Migrating from v2 to v3

## Overview
This guide helps you migrate your claude-flow installation from v2 to v3.

## Prerequisites
- Node.js 20+
- Backup of v2 data
- v2.x running successfully

## Step 1: Backup
```bash
# Backup data
cp claude-flow.db backup/
cp -r .claude/ backup/

Step 2: Install v3

npm install claude-flow@3.0.0

Step 3: Migrate Config

npx claude-flow migrate config

Step 4: Migrate Data

npx claude-flow migrate data

Step 5: Test

npx claude-flow test-migration

Step 6: Switch

npx claude-flow activate v3

Rollback

If issues occur:

npx claude-flow rollback v2

---

**Document Owner:** Architecture Team
**Last Updated:** 2026-01-03
**Next Review:** End of Phase 1 (Week 4)

---

**End of Migration Roadmap**