--- ## Phase 41: Neith Sovereign Stack — Foundation & Core Runtime > **Neith** (Egyptian: Nit/Net) — Primordial creator goddess who wove the world > into existence. The Neith stack is Oshun's sovereign technology foundation, > building custom alternatives and migration paths that reduce reliance on > external dependencies over time. **Target:** Complete technology sovereignty from operating systems to applications, rivaling Microsoft, Apple, and Epic Games in capability. --- ### 41.1 @neith/core — Runtime Kernel The foundational async runtime, memory management, and system primitives. #### 41.1.1 Async Runtime Foundation - [ ] **41.1.1.1** Design async executor architecture (work-stealing) - [ ] **41.1.1.2** Implement multi-threaded task scheduler - [ ] **41.1.1.3** Create fiber/coroutine system for cooperative multitasking - [ ] **41.1.1.4** Implement async I/O layer (io_uring on Linux, IOCP on Windows) - [ ] **41.1.1.5** Create timer wheel for efficient timeout handling - [ ] **41.1.1.6** Implement cancellation tokens and graceful shutdown - [ ] **41.1.1.7** Create task-local storage system - [ ] **41.1.1.8** Implement priority-based task scheduling - [ ] **41.1.1.9** Create async channel primitives (mpsc, mpmc, broadcast) - [ ] **41.1.1.10** Implement backpressure mechanisms for flow control - [ ] **41.1.1.11** Create async mutex, rwlock, semaphore primitives - [ ] **41.1.1.12** Implement async barrier and latch synchronization - [ ] **41.1.1.13** Create thread pool with dynamic sizing - [ ] **41.1.1.14** Implement CPU affinity and NUMA awareness - [ ] **41.1.1.15** Create async runtime metrics and profiling #### 41.1.2 Memory Management - [ ] **41.1.2.1** Implement arena allocator for frame-temporary data - [ ] **41.1.2.2** Create pool allocator for fixed-size objects - [ ] **41.1.2.3** Implement stack allocator for hierarchical data - [ ] **41.1.2.4** Create slab allocator for component storage - [ ] **41.1.2.5** Implement buddy allocator for variable-size blocks - [ ] **41.1.2.6** Create TLSF (Two-Level Segregated Fit) allocator - [ ] **41.1.2.7** Implement memory tagging for debugging - [ ] **41.1.2.8** Create allocation tracking and leak detection - [ ] **41.1.2.9** Implement memory defragmentation strategies - [ ] **41.1.2.10** Create virtual memory management utilities - [ ] **41.1.2.11** Implement memory-mapped file support - [ ] **41.1.2.12** Create shared memory primitives for IPC - [ ] **41.1.2.13** Implement huge page support for performance - [ ] **41.1.2.14** Create memory budget system with limits - [ ] **41.1.2.15** Implement out-of-memory handling strategies #### 41.1.3 Serialization System - [ ] **41.1.3.1** Design binary serialization format (Neith Binary Format) - [ ] **41.1.3.2** Implement zero-copy deserialization - [ ] **41.1.3.3** Create schema evolution and versioning system - [ ] **41.1.3.4** Implement JSON serialization with streaming - [ ] **41.1.3.5** Create MessagePack serialization support - [ ] **41.1.3.6** Implement CBOR serialization for compactness - [ ] **41.1.3.7** Create Protocol Buffers compatibility layer - [ ] **41.1.3.8** Implement FlatBuffers-style access patterns - [ ] **41.1.3.9** Create custom derive macros for serialization - [ ] **41.1.3.10** Implement partial serialization for deltas - [ ] **41.1.3.11** Create compression integration (LZ4, Zstd) - [ ] **41.1.3.12** Implement encryption layer for sensitive data - [ ] **41.1.3.13** Create schema validation and migration tools - [ ] **41.1.3.14** Implement streaming serialization for large objects - [ ] **41.1.3.15** Create benchmark suite comparing formats #### 41.1.4 Reflection System - [ ] **41.1.4.1** Design runtime type information (RTTI) system - [ ] **41.1.4.2** Implement type registry with unique IDs - [ ] **41.1.4.3** Create field metadata (name, type, offset, attributes) - [ ] **41.1.4.4** Implement method metadata and invocation - [ ] **41.1.4.5** Create enum reflection with variant info - [ ] **41.1.4.6** Implement generic type reflection - [ ] **41.1.4.7** Create attribute/annotation system - [ ] **41.1.4.8** Implement dynamic property access - [ ] **41.1.4.9** Create type conversion utilities - [ ] **41.1.4.10** Implement serialization integration - [ ] **41.1.4.11** Create editor integration for property grids - [ ] **41.1.4.12** Implement scripting language bindings - [ ] **41.1.4.13** Create documentation generation from reflection - [ ] **41.1.4.14** Implement validation rules via attributes - [ ] **41.1.4.15** Create reflection-based diff and patch #### 41.1.5 Event System - [ ] **41.1.5.1** Design typed event bus architecture - [ ] **41.1.5.2** Implement synchronous event dispatch - [ ] **41.1.5.3** Create async event dispatch with ordering - [ ] **41.1.5.4** Implement event filtering and routing - [ ] **41.1.5.5** Create event priority system - [ ] **41.1.5.6** Implement event cancellation/consumption - [ ] **41.1.5.7** Create event batching for performance - [ ] **41.1.5.8** Implement event replay for debugging - [ ] **41.1.5.9** Create event serialization for networking - [ ] **41.1.5.10** Implement event sourcing patterns - [ ] **41.1.5.11** Create event versioning for compatibility - [ ] **41.1.5.12** Implement weak event references - [ ] **41.1.5.13** Create event statistics and monitoring - [ ] **41.1.5.14** Implement cross-process event bus - [ ] **41.1.5.15** Create visual event flow debugging #### 41.1.6 Logging & Diagnostics - [ ] **41.1.6.1** Implement structured logging system - [ ] **41.1.6.2** Create log levels with runtime filtering - [ ] **41.1.6.3** Implement async log writing (non-blocking) - [ ] **41.1.6.4** Create log rotation and archival - [ ] **41.1.6.5** Implement log format customization - [ ] **41.1.6.6** Create JSON and binary log formats - [ ] **41.1.6.7** Implement distributed tracing (OpenTelemetry) - [ ] **41.1.6.8** Create span-based profiling integration - [ ] **41.1.6.9** Implement metric collection (counters, gauges, histograms) - [ ] **41.1.6.10** Create health check framework - [ ] **41.1.6.11** Implement crash reporting and minidumps - [ ] **41.1.6.12** Create assertion and contract system - [ ] **41.1.6.13** Implement performance markers for profilers - [ ] **41.1.6.14** Create remote logging and monitoring - [ ] **41.1.6.15** Implement log analysis and alerting --- ### 41.2 @neith/hal — Hardware Abstraction Layer Unified interface to hardware across all platforms. #### 41.2.1 GPU Abstraction - [ ] **41.2.1.1** Create GPU device enumeration and selection - [ ] **41.2.1.2** Implement Vulkan backend via wgpu - [ ] **41.2.1.3** Implement Metal backend via wgpu - [ ] **41.2.1.4** Implement DirectX 12 backend via wgpu - [ ] **41.2.1.5** Implement WebGPU backend for browsers - [ ] **41.2.1.6** Create shader compilation pipeline (WGSL → SPIR-V) - [ ] **41.2.1.7** Implement shader hot-reloading for development - [ ] **41.2.1.8** Create GPU memory allocator (VMA-style) - [ ] **41.2.1.9** Implement resource binding and descriptor sets - [ ] **41.2.1.10** Create command buffer recording and submission - [ ] **41.2.1.11** Implement multi-queue support (graphics, compute, transfer) - [ ] **41.2.1.12** Create synchronization primitives (fences, semaphores) - [ ] **41.2.1.13** Implement GPU profiling and timing queries - [ ] **41.2.1.14** Create GPU capability detection and feature levels - [ ] **41.2.1.15** Implement multi-GPU support (explicit, implicit) #### 41.2.2 Audio Device Abstraction - [ ] **41.2.2.1** Create audio device enumeration - [ ] **41.2.2.2** Implement WASAPI backend (Windows) - [ ] **41.2.2.3** Implement CoreAudio backend (macOS/iOS) - [ ] **41.2.2.4** Implement ALSA/PulseAudio/PipeWire backends (Linux) - [ ] **41.2.2.5** Implement AAudio/OpenSL ES backends (Android) - [ ] **41.2.2.6** Implement WebAudio backend (browsers) - [ ] **41.2.2.7** Create sample rate conversion - [ ] **41.2.2.8** Implement channel mapping and remixing - [ ] **41.2.2.9** Create low-latency audio paths - [ ] **41.2.2.10** Implement audio device hot-plugging - [ ] **41.2.2.11** Create MIDI device abstraction - [ ] **41.2.2.12** Implement audio routing and mixing - [ ] **41.2.2.13** Create audio format conversion - [ ] **41.2.2.14** Implement exclusive mode for pro audio - [ ] **41.2.2.15** Create audio latency measurement #### 41.2.3 Input Abstraction - [ ] **41.2.3.1** Create unified input event system - [ ] **41.2.3.2** Implement keyboard input with scancodes and keycodes - [ ] **41.2.3.3** Create mouse input with raw and accelerated modes - [ ] **41.2.3.4** Implement gamepad support (XInput, DInput, HID) - [ ] **41.2.3.5** Create touch input with gesture recognition - [ ] **41.2.3.6** Implement pen/stylus input with pressure - [ ] **41.2.3.7** Create motion controller support (VR) - [ ] **41.2.3.8** Implement eye tracking integration - [ ] **41.2.3.9** Create voice input abstraction - [ ] **41.2.3.10** Implement haptic feedback (rumble, HD haptics) - [ ] **41.2.3.11** Create input remapping system - [ ] **41.2.3.12** Implement input recording and playback - [ ] **41.2.3.13** Create dead zone and curve configuration - [ ] **41.2.3.14** Implement multi-user input separation - [ ] **41.2.3.15** Create accessibility input adaptations #### 41.2.4 Sensor Abstraction - [ ] **41.2.4.1** Create accelerometer abstraction - [ ] **41.2.4.2** Implement gyroscope abstraction - [ ] **41.2.4.3** Create magnetometer (compass) abstraction - [ ] **41.2.4.4** Implement barometer/altimeter abstraction - [ ] **41.2.4.5** Create GPS/GNSS location abstraction - [ ] **41.2.4.6** Implement proximity sensor abstraction - [ ] **41.2.4.7** Create ambient light sensor abstraction - [ ] **41.2.4.8** Implement heart rate sensor abstraction - [ ] **41.2.4.9** Create sensor fusion (IMU) algorithms - [ ] **41.2.4.10** Implement Kalman filtering for noise reduction - [ ] **41.2.4.11** Create sensor calibration utilities - [ ] **41.2.4.12** Implement sensor data recording - [ ] **41.2.4.13** Create sensor simulation for testing - [ ] **41.2.4.14** Implement power-efficient sensor batching - [ ] **41.2.4.15** Create sensor permission handling #### 41.2.5 Camera Abstraction - [ ] **41.2.5.1** Create camera device enumeration - [ ] **41.2.5.2** Implement camera capture (Video4Linux, AVFoundation, MediaFoundation) - [ ] **41.2.5.3** Create camera format negotiation - [ ] **41.2.5.4** Implement camera controls (exposure, focus, white balance) - [ ] **41.2.5.5** Create multi-camera support - [ ] **41.2.5.6** Implement depth camera support (RealSense, Kinect) - [ ] **41.2.5.7** Create IR camera support - [ ] **41.2.5.8** Implement camera calibration utilities - [ ] **41.2.5.9** Create camera streaming to GPU textures - [ ] **41.2.5.10** Implement camera recording - [ ] **41.2.5.11** Create AR camera integration (ARKit, ARCore) - [ ] **41.2.5.12** Implement camera permission handling - [ ] **41.2.5.13** Create camera simulation for testing - [ ] **41.2.5.14** Implement camera hot-plugging - [ ] **41.2.5.15** Create stereoscopic camera support #### 41.2.6 Network Abstraction - [ ] **41.2.6.1** Create socket abstraction (TCP, UDP) - [ ] **41.2.6.2** Implement TLS/SSL integration (rustls) - [ ] **41.2.6.3** Create QUIC protocol support (quinn) - [ ] **41.2.6.4** Implement WebSocket support - [ ] **41.2.6.5** Create HTTP/1.1 and HTTP/2 clients - [ ] **41.2.6.6** Implement HTTP/3 support - [ ] **41.2.6.7** Create DNS resolution with caching - [ ] **41.2.6.8** Implement mDNS/DNS-SD for discovery - [ ] **41.2.6.9** Create Bluetooth abstraction - [ ] **41.2.6.10** Implement Wi-Fi Direct/P2P support - [ ] **41.2.6.11** Create NFC abstraction - [ ] **41.2.6.12** Implement network quality detection - [ ] **41.2.6.13** Create bandwidth estimation - [ ] **41.2.6.14** Implement network simulation for testing - [ ] **41.2.6.15** Create VPN/proxy tunneling support #### 41.2.7 Storage Abstraction - [ ] **41.2.7.1** Create file system abstraction - [ ] **41.2.7.2** Implement async file I/O - [ ] **41.2.7.3** Create directory watching (inotify, FSEvents, ReadDirectoryChanges) - [ ] **41.2.7.4** Implement file locking - [ ] **41.2.7.5** Create memory-mapped file support - [ ] **41.2.7.6** Implement sparse file support - [ ] **41.2.7.7** Create archive format support (ZIP, TAR) - [ ] **41.2.7.8** Implement cloud storage abstraction (S3-compatible) - [ ] **41.2.7.9** Create database abstraction (SQLite, embedded) - [ ] **41.2.7.10** Implement key-value store abstraction - [ ] **41.2.7.11** Create secure storage (keychain, credential manager) - [ ] **41.2.7.12** Implement storage quota management - [ ] **41.2.7.13** Create storage migration utilities - [ ] **41.2.7.14** Implement storage encryption - [ ] **41.2.7.15** Create storage benchmarking --- ### 41.3 @neith/crypto — Cryptography & Security Sovereign cryptographic primitives and security utilities. #### 41.3.1 Symmetric Encryption - [ ] **41.3.1.1** Implement AES-256-GCM encryption - [ ] **41.3.1.2** Create ChaCha20-Poly1305 encryption - [ ] **41.3.1.3** Implement AES-256-CBC with HMAC - [ ] **41.3.1.4** Create XChaCha20-Poly1305 for extended nonces - [ ] **41.3.1.5** Implement streaming encryption for large files - [ ] **41.3.1.6** Create authenticated encryption wrapper - [ ] **41.3.1.7** Implement key derivation (HKDF, PBKDF2, Argon2) - [ ] **41.3.1.8** Create secure key storage integration - [ ] **41.3.1.9** Implement hardware acceleration detection (AES-NI) - [ ] **41.3.1.10** Create encryption benchmarks - [ ] **41.3.1.11** Implement constant-time operations - [ ] **41.3.1.12** Create secure memory wiping - [ ] **41.3.1.13** Implement encryption context/AAD support - [ ] **41.3.1.14** Create multi-recipient encryption - [ ] **41.3.1.15** Implement forward secrecy patterns #### 41.3.2 Asymmetric Encryption - [ ] **41.3.2.1** Implement Ed25519 signatures - [ ] **41.3.2.2** Create X25519 key exchange - [ ] **41.3.2.3** Implement RSA-4096 for compatibility - [ ] **41.3.2.4** Create ECDSA (P-256, P-384) support - [ ] **41.3.2.5** Implement ECDH key agreement - [ ] **41.3.2.6** Create hybrid encryption (ECIES-style) - [ ] **41.3.2.7** Implement key pair generation - [ ] **41.3.2.8** Create key import/export (PEM, DER, JWK) - [ ] **41.3.2.9** Implement certificate parsing (X.509) - [ ] **41.3.2.10** Create certificate chain validation - [ ] **41.3.2.11** Implement certificate pinning - [ ] **41.3.2.12** Create CSR generation - [ ] **41.3.2.13** Implement OCSP and CRL checking - [ ] **41.3.2.14** Create post-quantum hybrid schemes (Kyber+X25519) - [ ] **41.3.2.15** Implement threshold signatures #### 41.3.3 Hashing & MACs - [ ] **41.3.3.1** Implement SHA-256/SHA-512 - [ ] **41.3.3.2** Create SHA-3 (Keccak) support - [ ] **41.3.3.3** Implement BLAKE3 for speed - [ ] **41.3.3.4** Create BLAKE2b/BLAKE2s - [ ] **41.3.3.5** Implement HMAC-SHA256/SHA512 - [ ] **41.3.3.6** Create keyed BLAKE3 - [ ] **41.3.3.7** Implement Poly1305 MAC - [ ] **41.3.3.8** Create incremental/streaming hashing - [ ] **41.3.3.9** Implement parallel hashing for large files - [ ] **41.3.3.10** Create hash tree (Merkle tree) utilities - [ ] **41.3.3.11** Implement content-addressable storage hashing - [ ] **41.3.3.12** Create password hashing (Argon2id) - [ ] **41.3.3.13** Implement hash-based KDF - [ ] **41.3.3.14** Create hash benchmarks - [ ] **41.3.3.15** Implement hash verification with timing safety #### 41.3.4 Random Number Generation - [ ] **41.3.4.1** Create cryptographically secure RNG (CSPRNG) - [ ] **41.3.4.2** Implement OS entropy source integration - [ ] **41.3.4.3** Create hardware RNG support (RDRAND) - [ ] **41.3.4.4** Implement deterministic RNG for testing - [ ] **41.3.4.5** Create random byte generation - [ ] **41.3.4.6** Implement random integer in range - [ ] **41.3.4.7** Create random string generation - [ ] **41.3.4.8** Implement UUID v4 generation - [ ] **41.3.4.9** Create entropy pool management - [ ] **41.3.4.10** Implement entropy health monitoring - [ ] **41.3.4.11** Create fork-safe RNG - [ ] **41.3.4.12** Implement RNG reseeding - [ ] **41.3.4.13** Create RNG state serialization (for replays) - [ ] **41.3.4.14** Implement bias-free random selection - [ ] **41.3.4.15** Create random permutation (shuffle) #### 41.3.5 TLS & Secure Channels - [ ] **41.3.5.1** Implement TLS 1.3 client (rustls) - [ ] **41.3.5.2** Create TLS 1.3 server - [ ] **41.3.5.3** Implement certificate verification - [ ] **41.3.5.4** Create SNI support - [ ] **41.3.5.5** Implement ALPN negotiation - [ ] **41.3.5.6** Create session resumption (tickets) - [ ] **41.3.5.7** Implement 0-RTT early data - [ ] **41.3.5.8** Create client certificate authentication - [ ] **41.3.5.9** Implement DTLS for UDP - [ ] **41.3.5.10** Create Noise Protocol framework - [ ] **41.3.5.11** Implement WireGuard-style channels - [ ] **41.3.5.12** Create secure channel abstraction - [ ] **41.3.5.13** Implement channel binding - [ ] **41.3.5.14** Create perfect forward secrecy verification - [ ] **41.3.5.15** Implement TLS debugging and logging --- ### 41.4 @neith/net — Networking Stack Custom networking for games, real-time, and general applications. #### 41.4.1 Transport Layer - [ ] **41.4.1.1** Implement reliable UDP protocol - [ ] **41.4.1.2** Create packet fragmentation and reassembly - [ ] **41.4.1.3** Implement congestion control (BBR-style) - [ ] **41.4.1.4** Create flow control with backpressure - [ ] **41.4.1.5** Implement packet prioritization - [ ] **41.4.1.6** Create ordered and unordered channels - [ ] **41.4.1.7** Implement reliable and unreliable channels - [ ] **41.4.1.8** Create connection establishment handshake - [ ] **41.4.1.9** Implement connection migration - [ ] **41.4.1.10** Create NAT traversal (STUN, TURN, ICE) - [ ] **41.4.1.11** Implement hole punching - [ ] **41.4.1.12** Create relay fallback - [ ] **41.4.1.13** Implement bandwidth estimation - [ ] **41.4.1.14** Create latency measurement (RTT) - [ ] **41.4.1.15** Implement packet loss detection and recovery #### 41.4.2 Game Networking - [ ] **41.4.2.1** Implement client-server architecture - [ ] **41.4.2.2** Create peer-to-peer mesh networking - [ ] **41.4.2.3** Implement state synchronization - [ ] **41.4.2.4** Create delta compression - [ ] **41.4.2.5** Implement interest management (relevancy) - [ ] **41.4.2.6** Create client-side prediction - [ ] **41.4.2.7** Implement server reconciliation - [ ] **41.4.2.8** Create lag compensation - [ ] **41.4.2.9** Implement snapshot interpolation - [ ] **41.4.2.10** Create entity replication system - [ ] **41.4.2.11** Implement RPC system - [ ] **41.4.2.12** Create lobby and matchmaking protocols - [ ] **41.4.2.13** Implement voice chat integration - [ ] **41.4.2.14** Create anti-cheat foundations - [ ] **41.4.2.15** Implement network simulation (artificial lag, loss) #### 41.4.3 WebRTC Integration - [ ] **41.4.3.1** Implement WebRTC data channels - [ ] **41.4.3.2** Create WebRTC audio/video streams - [ ] **41.4.3.3** Implement ICE candidate gathering - [ ] **41.4.3.4** Create DTLS-SRTP for media encryption - [ ] **41.4.3.5** Implement SDP offer/answer - [ ] **41.4.3.6** Create SCTP data channel multiplexing - [ ] **41.4.3.7** Implement bandwidth estimation (REMB, TWCC) - [ ] **41.4.3.8** Create simulcast support - [ ] **41.4.3.9** Implement SVC (Scalable Video Coding) support - [ ] **41.4.3.10** Create screen sharing - [ ] **41.4.3.11** Implement recording - [ ] **41.4.3.12** Create stats collection - [ ] **41.4.3.13** Implement quality adaptation - [ ] **41.4.3.14** Create echo cancellation integration - [ ] **41.4.3.15** Implement noise suppression integration #### 41.4.4 HTTP Stack - [ ] **41.4.4.1** Implement HTTP/1.1 client - [ ] **41.4.4.2** Create HTTP/2 client with multiplexing - [ ] **41.4.4.3** Implement HTTP/3 (QUIC) client - [ ] **41.4.4.4** Create connection pooling - [ ] **41.4.4.5** Implement cookie handling - [ ] **41.4.4.6** Create redirect following - [ ] **41.4.4.7** Implement retry logic with backoff - [ ] **41.4.4.8** Create request/response streaming - [ ] **41.4.4.9** Implement multipart form data - [ ] **41.4.4.10** Create file upload/download - [ ] **41.4.4.11** Implement progress callbacks - [ ] **41.4.4.12** Create caching (ETag, Cache-Control) - [ ] **41.4.4.13** Implement compression (gzip, br, zstd) - [ ] **41.4.4.14** Create proxy support (HTTP, SOCKS5) - [ ] **41.4.4.15** Implement HTTP server for local services --- ### 41.5 @neith/ui — UI Toolkit GPU-accelerated, cross-platform UI toolkit. #### 41.5.1 Rendering Core - [ ] **41.5.1.1** Implement GPU-accelerated 2D renderer - [ ] **41.5.1.2** Create vector path rendering (Bézier curves) - [ ] **41.5.1.3** Implement anti-aliased line and shape drawing - [ ] **41.5.1.4** Create gradient fills (linear, radial, conic) - [ ] **41.5.1.5** Implement image rendering with filtering - [ ] **41.5.1.6** Create blend modes (multiply, screen, overlay, etc.) - [ ] **41.5.1.7** Implement clipping and masking - [ ] **41.5.1.8** Create shadow and blur effects - [ ] **41.5.1.9** Implement render layers and compositing - [ ] **41.5.1.10** Create texture atlasing - [ ] **41.5.1.11** Implement render caching (dirty rectangles) - [ ] **41.5.1.12** Create subpixel positioning - [ ] **41.5.1.13** Implement HiDPI/Retina support - [ ] **41.5.1.14** Create color management (sRGB, Display P3) - [ ] **41.5.1.15** Implement HDR rendering #### 41.5.2 Text Rendering - [ ] **41.5.2.1** Implement font loading (TTF, OTF, WOFF2) - [ ] **41.5.2.2** Create font rasterization (signed distance field) - [ ] **41.5.2.3** Implement glyph caching and atlasing - [ ] **41.5.2.4** Create text shaping (HarfBuzz integration) - [ ] **41.5.2.5** Implement complex script support (Arabic, Devanagari, CJK) - [ ] **41.5.2.6** Create bidirectional text (RTL, LTR) - [ ] **41.5.2.7** Implement text layout (line breaking, justification) - [ ] **41.5.2.8** Create rich text with inline styles - [ ] **41.5.2.9** Implement text selection and cursor - [ ] **41.5.2.10** Create text editing with IME support - [ ] **41.5.2.11** Implement font fallback chains - [ ] **41.5.2.12** Create variable font support - [ ] **41.5.2.13** Implement emoji rendering (color fonts) - [ ] **41.5.2.14** Create text truncation with ellipsis - [ ] **41.5.2.15** Implement text accessibility (screen reader) #### 41.5.3 Layout Engine - [ ] **41.5.3.1** Implement flexbox layout algorithm - [ ] **41.5.3.2** Create CSS Grid layout algorithm - [ ] **41.5.3.3** Implement absolute/relative positioning - [ ] **41.5.3.4** Create stack layout (Z-order) - [ ] **41.5.3.5** Implement scroll containers - [ ] **41.5.3.6** Create virtualized lists (thousands of items) - [ ] **41.5.3.7** Implement constraint-based layout - [ ] **41.5.3.8** Create responsive breakpoints - [ ] **41.5.3.9** Implement layout caching - [ ] **41.5.3.10** Create layout animation support - [ ] **41.5.3.11** Implement intrinsic sizing - [ ] **41.5.3.12** Create aspect ratio constraints - [ ] **41.5.3.13** Implement safe area insets - [ ] **41.5.3.14** Create layout debugging visualization - [ ] **41.5.3.15** Implement layout performance profiling #### 41.5.4 Widget Library - [ ] **41.5.4.1** Create Button widget with states - [ ] **41.5.4.2** Implement TextField with validation - [ ] **41.5.4.3** Create TextArea (multiline) - [ ] **41.5.4.4** Implement Checkbox and Radio - [ ] **41.5.4.5** Create Slider and Range slider - [ ] **41.5.4.6** Implement Dropdown/Select - [ ] **41.5.4.7** Create DatePicker and TimePicker - [ ] **41.5.4.8** Implement ColorPicker - [ ] **41.5.4.9** Create Progress bar and Spinner - [ ] **41.5.4.10** Implement Tabs and TabView - [ ] **41.5.4.11** Create TreeView with lazy loading - [ ] **41.5.4.12** Implement DataGrid/Table - [ ] **41.5.4.13** Create Modal and Dialog - [ ] **41.5.4.14** Implement Tooltip and Popover - [ ] **41.5.4.15** Create ContextMenu #### 41.5.5 Animation System - [ ] **41.5.5.1** Implement property animation - [ ] **41.5.5.2** Create easing functions library - [ ] **41.5.5.3** Implement spring physics animations - [ ] **41.5.5.4** Create keyframe animations - [ ] **41.5.5.5** Implement animation sequencing - [ ] **41.5.5.6** Create parallel animations - [ ] **41.5.5.7** Implement animation curves (cubic-bezier) - [ ] **41.5.5.8** Create gesture-driven animations - [ ] **41.5.5.9** Implement transition system - [ ] **41.5.5.10** Create shared element transitions - [ ] **41.5.5.11** Implement staggered animations - [ ] **41.5.5.12** Create animation cancellation - [ ] **41.5.5.13** Implement animation debugging - [ ] **41.5.5.14** Create Lottie animation support - [ ] **41.5.5.15** Implement physics-based gestures #### 41.5.6 Theming System - [ ] **41.5.6.1** Create design token system - [ ] **41.5.6.2** Implement color themes (light, dark) - [ ] **41.5.6.3** Create typography scale - [ ] **41.5.6.4** Implement spacing scale - [ ] **41.5.6.5** Create component variants - [ ] **41.5.6.6** Implement theme inheritance - [ ] **41.5.6.7** Create runtime theme switching - [ ] **41.5.6.8** Implement theme serialization - [ ] **41.5.6.9** Create theme editor UI - [ ] **41.5.6.10** Implement system theme detection - [ ] **41.5.6.11** Create high contrast mode - [ ] **41.5.6.12** Implement reduced motion mode - [ ] **41.5.6.13** Create theme validation - [ ] **41.5.6.14** Implement CSS-in-Rust styling - [ ] **41.5.6.15** Create style documentation generator --- ### Phase 41 Summary — Neith Foundation | Library | Section | Tasks | | ------------------ | ------- | ------- | | @neith/core | 41.1 | 90 | | @neith/hal | 41.2 | 105 | | @neith/crypto | 41.3 | 75 | | @neith/net | 41.4 | 60 | | @neith/ui | 41.5 | 90 | | **Phase 41 Total** | | **420** |