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Strategic Development Approach

Foundation I → MVP → Foundation II → PoCs → Feature Groups. Advanced infrastructure after AI features are validated.

Foundation II Roadmap

Build advanced infrastructure for production deployment and extensibility. Only tackle after MVP companion features are working and validated.

Phase 3: Advanced Infrastructure

Enhanced Message Bus (Moved from Foundation I)

  • Topic Hierarchy: Full topic structure (emotion., personality., agency.*)
  • Message Validation: Business logic validation beyond basic protobuf parsing
  • Error Handling: Message delivery guarantees and error recovery

Data Layer Advanced Features (Moved from Foundation I)

  • Vector Store: ChromaDB integration for embeddings and similarity search
  • Analytical Engine: DuckDB integration for complex analytical queries
  • Full Schema: Complete database schema for memory, personality, system data
  • Backup/Restore: Data backup and recovery mechanisms
  • Privacy Controls: Advanced data encryption and access controls

Flutter Advanced Features (Moved from Foundation I)

  • Go Router: Upgrade to declarative routing and deep linking
  • Responsive Design: Adaptive layouts for desktop, tablet, mobile
  • Platform Integration: Windows/macOS/Linux specific integrations
  • Caching: Local caching for offline functionality

API Gateway Advanced Features

  • Rate Limiting: Advanced token bucket rate limiting with per-client quotas
  • Admin Endpoint Separation: Secure admin interface with role-based access control
  • Federation Support: Device-to-device communication for multi-device sync
  • gRPC Protocol Support: High-performance binary protocol adapter
  • Protocol Buffer Schemas: Unified message schemas across all protocols
  • Transport Negotiation: Automatic fallback between ZeroMQ IPC, WebSocket, REST
  • Security Middleware: Request sanitization, XSS protection, input validation
  • Connection Pooling: Efficient resource management for high-throughput scenarios

Plugin System

  • Plugin Manager: Hot-loading/unloading with sandboxed execution
  • Permission System: Topic-based access control for plugins
  • Resource Monitoring: CPU/memory limits and monitoring for plugins
  • Plugin API: Standardized plugin interface and lifecycle hooks
  • Configuration Validation: Plugin config schema validation
  • Isolation: Process/thread isolation for plugin execution
  • Lifecycle Management: Support 10+ concurrent plugins

Advanced Resource Management

  • LMDB Integration: Optional high-performance key-value store for caching
  • Advanced Job Scheduler: Complex task dependencies and workflows
  • Resource Optimization: Dynamic resource allocation based on system load
  • Performance Profiling: Built-in profiling and optimization tools

Phase 4: Production Readiness

Update System

  • Update Orchestrator: Centralized update management
  • Delta Updates: Efficient incremental updates
  • Signature Verification: Cryptographic update verification
  • Rollback Capability: Automatic rollback on update failure
  • Background Updates: Non-disruptive update installation
  • Version Management: Multiple version support
  • Update Scheduling: User-controlled update timing
  • Coordinated Updates: Sequential frontend/backend updates

Module Foundations

  • Module Base Classes: Standard module interface and lifecycle
  • Message Subscription: Standardized topic subscription
  • Module Configuration: YAML/JSON configuration with validation
  • Module Health Checks: Health monitoring per module
  • Module Isolation: Error isolation to prevent cascade failures
  • Module Registry: Dynamic module discovery and dependencies

Advanced Privacy Controls

  • Granular Consent Management: Fine-grained data usage permissions
  • Data Anonymization: Advanced privacy-preserving techniques
  • Audit Trail: Comprehensive logging of all data access
  • Compliance Framework: GDPR, CCPA compliance tools

Phase 5: Development & Deployment

Build System

  • Flutter Build: Cross-platform build configuration
  • Python Packaging: Backend service packaging with dependencies
  • Asset Management: Avatar models, voices, and other assets
  • Environment Management: Development, staging, production configs
  • Dependency Management: Lock files and reproducible builds
  • Cross-Platform: Windows, macOS, Linux build targets

CI/CD Pipeline

  • GitHub Actions: Automated testing and building
  • Code Quality: Linting, formatting, and static analysis
  • Security Scanning: Dependency vulnerability scanning
  • Automated Testing: Full test suite execution on every commit
  • Build Artifacts: Automated packaging and artifact generation
  • Release Management: Semantic versioning and release automation

Testing & Quality

  • Unit Tests: Core functionality unit tests
  • Integration Tests: Cross-component communication tests
  • End-to-End Tests: Full system workflow tests
  • Performance Tests: Load and stress testing
  • Security Tests: Vulnerability and penetration testing
  • Code Coverage: >80% test coverage requirement

Monitoring & Observability

  • Metrics Collection: System performance and health metrics
  • Error Tracking: Exception capture and reporting
  • Performance Monitoring: Latency and throughput tracking
  • Resource Usage: CPU, memory, and disk monitoring
  • Alert System: Automated alerts for system issues
  • Dashboard: Real-time system status dashboard

Architecture Validation

Integration Tests

  • Message Bus Load: 1000+ messages/second throughput
  • Plugin Lifecycle: Loading/unloading 10+ concurrent plugins
  • Service Restart: Graceful restart without data loss
  • Cross-Component: End-to-end communication validation
  • Error Recovery: Fault tolerance and recovery testing
  • Performance: Sub-100ms message latency validation

Performance Benchmarks

  • Message Latency: < 100ms end-to-end message processing
  • Plugin Startup: < 2s plugin initialization time
  • Memory Growth: < 10MB/day memory leak detection
  • CPU Usage: < 5% idle system resource usage
  • Startup Time: < 10s full system initialization
  • Response Time: < 3s LLM response generation

Foundation II Complete When

Advanced Functionality

  • Plugin system supports 10+ concurrent plugins with isolation
  • Update system handles coordinated frontend/backend updates
  • Advanced resource management optimizes system performance
  • Production monitoring and observability operational

Developer Experience

  • Complete test suite with >80% code coverage
  • Automated CI/CD pipeline with quality gates
  • Comprehensive documentation with examples
  • Plugin SDK with sample plugins
  • Performance monitoring and debugging tools

Production Readiness

  • Automated deployment and update mechanisms
  • Comprehensive monitoring and alerting
  • Security scanning and vulnerability management
  • Performance optimization and resource management
  • Compliance and audit capabilities

Previous: MVP Roadmap (file does not exist) validates core companion features
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