📋 Core

📦 Manifest System

• Parse and validate manifests for all extension types
  • Read TOML/JSON manifest files with proper error handling
  • Validate schema against predefined specifications with detailed error messages
  • Check for required fields, data types, and value ranges
  • Verify semantic correctness (e.g., valid permission combinations)
  • Support manifest inheritance and composition for complex extensions
  • Handle manifest versioning and backward compatibility
• Define standardized manifest schema with version compatibility
  • Create comprehensive schema definitions for each extension type
  • Include metadata fields: name, version, author, description, license
  • Define capability declarations: permissions, resources, dependencies
  • Specify API contracts: inputs, outputs, data formats, protocols
  • Support semantic versioning with compatibility matrices
  • Provide migration paths for schema updates
• Support three manifest types:
  • 🎻 Instruments (AI/ML Models)
    • Model specifications: architecture, parameters, inference requirements
    • Input/output schemas with data validation rules
    • Performance characteristics: memory usage, processing time, accuracy
    • API endpoints or local execution requirements
    • Training data requirements and ethical considerations
    • Cost management settings for paid APIs
  • 🧩 Motifs/Addons (UI/UX Extensions)
    • UI component definitions: views, panels, dialogs, toolbars
    • Theme integration requirements and styling capabilities
    • Event handling and user interaction patterns
    • Accessibility compliance and internationalization support
    • Integration points with core IDE functionality
    • Custom keybinding and menu contributions
  • ⚙️ Operators (Utility Functions)
    • Function signatures with parameter validation
    • Data transformation capabilities and supported formats
    • Processing requirements: CPU, memory, disk space
    • Integration with external tools and services
    • Batch processing capabilities and optimization settings
    • Error handling and retry mechanisms
• Manifest validation with schema enforcement
  • JSON Schema or similar validation framework implementation
  • Custom validators for Symphony-specific requirements
  • Cross-reference validation (e.g., dependencies actually exist)
  • Security policy compliance checking
  • Performance requirement validation against system capabilities
  • Automated testing of manifest examples and documentation
• Dependency resolution and version management
  • Dependency graph construction and cycle detection
  • Semantic version resolution with conflict handling
  • Optional vs required dependency differentiation
  • Peer dependency management for extension ecosystems
  • Automated dependency updates with compatibility checking
  • Fallback mechanisms for missing or incompatible dependencies
• Capability declaration and verification
  • Fine-grained permission system with minimal privilege enforcement
  • Resource usage declarations and runtime verification
  • API surface access requirements with version constraints
  • Network access patterns and allowed endpoints
  • File system access patterns with path restrictions
  • Inter-extension communication capabilities and protocols

🏠 Extension Hosting & Runtime

• Extension lifecycle management (load, initialize, suspend, unload)
  • Controlled loading sequence with dependency ordering
  • Initialization with proper error handling and rollback
  • Runtime state management with persistence support
  • Graceful suspension for resource optimization
  • Clean shutdown with proper resource cleanup
  • Crash recovery and automatic restart mechanisms
• Sandboxed execution environment with security isolation
  • Process-level isolation using OS containers or similar
  • Memory space isolation preventing cross-extension access
  • Syscall filtering using seccomp or similar mechanisms
  • Network isolation with controlled external access
  • File system isolation using chroot or namespace techniques
  • Inter-process communication through controlled channels only
• Process-level isolation for untrusted extensions
  • Separate process spawning for each untrusted extension
  • Linux namespaces (PID, mount, network, user) for complete isolation
  • CGroups for resource limiting and monitoring
  • Capability dropping to remove unnecessary system privileges
  • SELinux/AppArmor integration for mandatory access control
  • Container-based isolation with runtime security monitoring
• Memory and resource limits enforcement
  • Configurable memory limits per extension with soft/hard thresholds
  • CPU usage monitoring and throttling mechanisms
  • Disk space quotas and I/O bandwidth limiting
  • Network bandwidth limiting and connection count restrictions
  • Open file descriptor limits and handle management
  • Real-time resource usage monitoring with alerting
• Hot-reloading for development and updates
• Extension communication channels (IPC/messaging)
• Error handling and recovery mechanisms

🔐 Security & Access Control

🛡️ Permission & Sandboxing System

• Fine-grained permission model with capability-based security