feat: Complete Rust port of WiFi-DensePose with modular crates

Major changes:
- Organized Python v1 implementation into v1/ subdirectory
- Created Rust workspace with 9 modular crates:
  - wifi-densepose-core: Core types, traits, errors
  - wifi-densepose-signal: CSI processing, phase sanitization, FFT
  - wifi-densepose-nn: Neural network inference (ONNX/Candle/tch)
  - wifi-densepose-api: Axum-based REST/WebSocket API
  - wifi-densepose-db: SQLx database layer
  - wifi-densepose-config: Configuration management
  - wifi-densepose-hardware: Hardware abstraction
  - wifi-densepose-wasm: WebAssembly bindings
  - wifi-densepose-cli: Command-line interface

Documentation:
- ADR-001: Workspace structure
- ADR-002: Signal processing library selection
- ADR-003: Neural network inference strategy
- DDD domain model with bounded contexts

Testing:
- 69 tests passing across all crates
- Signal processing: 45 tests
- Neural networks: 21 tests
- Core: 3 doc tests

Performance targets:
- 10x faster CSI processing (~0.5ms vs ~5ms)
- 5x lower memory usage (~100MB vs ~500MB)
- WASM support for browser deployment

.claude/helpers/v3.sh

@@ -0,0 +1,111 @@
+#!/bin/bash
+# V3 Helper Alias Script - Quick access to all V3 development tools
+
+set -e
+
+HELPERS_DIR=".claude/helpers"
+
+case "$1" in
+  "status"|"st")
+    "$HELPERS_DIR/v3-quick-status.sh"
+    ;;
+
+  "progress"|"prog")
+    shift
+    "$HELPERS_DIR/update-v3-progress.sh" "$@"
+    ;;
+
+  "validate"|"check")
+    "$HELPERS_DIR/validate-v3-config.sh"
+    ;;
+
+  "statusline"|"sl")
+    ".claude/statusline.sh"
+    ;;
+
+  "update")
+    if [ -z "$2" ] || [ -z "$3" ]; then
+      echo "Usage: v3 update <metric> <value>"
+      echo "Examples:"
+      echo "  v3 update domain 3"
+      echo "  v3 update agent 8"
+      echo "  v3 update security 2"
+      echo "  v3 update performance 2.5x"
+      echo "  v3 update memory 45%"
+      echo "  v3 update ddd 75"
+      exit 1
+    fi
+    "$HELPERS_DIR/update-v3-progress.sh" "$2" "$3"
+    ;;
+
+  "full-status"|"fs")
+    echo "🔍 V3 Development Environment Status"
+    echo "====================================="
+    echo ""
+    echo "📊 Quick Status:"
+    "$HELPERS_DIR/v3-quick-status.sh"
+    echo ""
+    echo "📺 Full Statusline:"
+    ".claude/statusline.sh"
+    ;;
+
+  "init")
+    echo "🚀 Initializing V3 Development Environment..."
+
+    # Run validation first
+    echo ""
+    echo "1️⃣ Validating configuration..."
+    if "$HELPERS_DIR/validate-v3-config.sh"; then
+      echo ""
+      echo "2️⃣ Showing current status..."
+      "$HELPERS_DIR/v3-quick-status.sh"
+      echo ""
+      echo "✅ V3 development environment is ready!"
+      echo ""
+      echo "🔧 Quick commands:"
+      echo "  v3 status        - Show quick status"
+      echo "  v3 update        - Update progress metrics"
+      echo "  v3 statusline    - Show full statusline"
+      echo "  v3 validate      - Validate configuration"
+    else
+      echo ""
+      echo "❌ Configuration validation failed. Please fix issues before proceeding."
+      exit 1
+    fi
+    ;;
+
+  "help"|"--help"|"-h"|"")
+    echo "Claude Flow V3 Helper Tool"
+    echo "=========================="
+    echo ""
+    echo "Usage: v3 <command> [options]"
+    echo ""
+    echo "Commands:"
+    echo "  status, st              Show quick development status"
+    echo "  progress, prog [args]   Update progress metrics"
+    echo "  validate, check         Validate V3 configuration"
+    echo "  statusline, sl          Show full statusline"
+    echo "  full-status, fs         Show both quick status and statusline"
+    echo "  update <metric> <value> Update specific metric"
+    echo "  init                    Initialize and validate environment"
+    echo "  help                    Show this help message"
+    echo ""
+    echo "Update Examples:"
+    echo "  v3 update domain 3      # Mark 3 domains complete"
+    echo "  v3 update agent 8       # Set 8 agents active"
+    echo "  v3 update security 2    # Mark 2 CVEs fixed"
+    echo "  v3 update performance 2.5x # Set performance to 2.5x"
+    echo "  v3 update memory 45%    # Set memory reduction to 45%"
+    echo "  v3 update ddd 75        # Set DDD progress to 75%"
+    echo ""
+    echo "Quick Start:"
+    echo "  v3 init                 # Initialize environment"
+    echo "  v3 status               # Check current progress"
+    ;;
+
+  *)
+    echo "Unknown command: $1"
+    echo "Run 'v3 help' for usage information"
+    exit 1
+    ;;
+esac