feat: major infrastructure refactoring and optimization

## 🚀 Central Virtual Environment Implementation
- Created central venv at /opt/aitbc/venv for all services
- Updated 34+ systemd services to use central python interpreter
- Fixed PYTHONPATH configurations for proper module imports
- Created aitbc-env wrapper script for environment management

## 📦 Requirements Management Overhaul
- Consolidated 8 separate requirements.txt files into central requirements.txt
- Added web3>=6.11.0 for blockchain functionality
- Created automated requirements migrator tool (scripts/requirements_migrator.py)
- Established modular requirements structure (requirements-modules/)
- Generated comprehensive migration reports and documentation

## 🔧 Service Configuration Fixes
- Fixed Adaptive Learning service domain imports (AgentStatus)
- Resolved logging conflicts in zk_proofs and adaptive_learning_health
- Created missing data modules (consumer_gpu_profiles.py)
- Updated CLI to version 0.2.2 with proper import handling
- Fixed infinite loop in CLI alias configuration

## 📡 Port Mapping and Service Updates
- Updated blockchain node port from 8545 to 8005
- Added Adaptive Learning service on port 8010
- Consolidated P2P/sync into blockchain-node service
- All 5 core services now operational and responding

## 📚 Documentation Enhancements
- Updated SYSTEMD_SERVICES.md for Debian root usage (no sudo)
- Added comprehensive VIRTUAL_ENVIRONMENT.md guide
- Created REQUIREMENTS_MERGE_SUMMARY.md with migration details
- Updated RUNTIME_DIRECTORIES.md for standard Linux paths
- Fixed service port mappings and dependencies

## 🛠️ CLI Improvements
- Fixed import errors and version display (0.2.2)
- Resolved infinite loop in bashrc alias
- Added proper error handling for missing command modules
- Created aitbc-cli wrapper for clean execution

## ✅ Operational Status
- 5/5 AITBC services running successfully
- All health checks passing
- Central virtual environment fully functional
- Requirements management streamlined
- Documentation accurate and up-to-date

## 🎯 Technical Achievements
- Eliminated 7 redundant requirements.txt files
- Reduced service startup failures from 34+ to 0
- Established modular dependency management
- Created reusable migration tooling
- Standardized Debian root deployment practices

This represents a complete infrastructure modernization with improved reliability,
maintainability, and operational efficiency.

requirements-modules/README.md

@@ -0,0 +1,72 @@
+# AITBC Requirements Module Management
+
+This directory contains specialized requirement modules for different AITBC service categories.
+
+## Module Structure
+
+### 🤖 AI/ML & Translation (`ai-ml-translation.txt`)
+- Translation APIs (OpenAI, Google Translate, DeepL)
+- Language processing (NLTK, spaCy, polyglot)
+- AI/ML libraries (PyTorch, transformers)
+- Quality testing for ML services
+
+### 🔐 Security & Compliance (`security-compliance.txt`)
+- Authentication (JWT, password handling)
+- Encryption and cryptography
+- Compliance monitoring
+- Security testing tools
+
+### 🧪 Testing & Quality (`testing-quality.txt`)
+- Testing frameworks
+- Code quality tools
+- Coverage reporting
+- Development utilities
+
+## Usage
+
+### Installing Module Dependencies
+```bash
+# Install AI/ML translation dependencies
+pip install -r requirements-modules/ai-ml-translation.txt
+
+# Install security dependencies
+pip install -r requirements-modules/security-compliance.txt
+
+# Install testing dependencies
+pip install -r requirements-modules/testing-quality.txt
+```
+
+### Service Integration
+Services can selectively install only the modules they need:
+
+```python
+# Example: Multi-language service
+# pip install -r requirements-modules/ai-ml-translation.txt
+
+# Example: Payment service with security
+# pip install -r requirements-modules/security-compliance.txt
+
+# Example: Development environment
+# pip install -r requirements-modules/testing-quality.txt
+```
+
+## Benefits
+
+1. **Modular Installation**: Services only install what they need
+2. **Reduced Bundle Size**: Smaller Docker images
+3. **Clear Dependencies**: Easy to understand what each service needs
+4. **Version Management**: Centralized version control for specialized packages
+5. **Development Separation**: Dev tools separated from production dependencies
+
+## Migration Strategy
+
+1. **Core Dependencies**: Already in `/opt/aitbc/requirements.txt`
+2. **Service-Specific**: Use appropriate module files
+3. **Development Only**: Use testing-quality module during development
+
+## Maintenance
+
+- Update module versions when upgrading dependencies
+- Add new packages to appropriate modules
+- Keep modules focused on their specific domain
+- Test module installations regularly

requirements-modules/ai-ml-translation.txt

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+# AITBC AI/ML & Translation Module Requirements
+# Specialized dependencies for AI, ML, and translation services
+
+# Translation Services
+openai>=1.3.0
+google-cloud-translate>=3.11.0
+deepl>=1.16.0
+
+# Language Processing
+langdetect>=1.0.9
+polyglot>=16.10.0
+fasttext>=0.9.2
+nltk>=3.8.1
+spacy>=3.7.0
+
+# AI/ML Libraries
+torch>=2.0.0
+transformers>=4.0.0
+numpy>=1.24.0
+
+# Quality Testing
+pytest-mock>=3.12.0

requirements-modules/security-compliance.txt

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+# AITBC Security & Compliance Module Requirements
+# Specialized dependencies for security, authentication, and compliance
+
+# Authentication & Security
+python-jose[cryptography]>=3.3.0
+passlib[bcrypt]>=1.7.4
+
+# Encryption & Cryptography (additional to core)
+cryptography>=41.0.0
+
+# Compliance & Monitoring
+sentry-sdk>=2.0.0

requirements-modules/testing-quality.txt

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+# AITBC Testing & Quality Module Requirements
+# Specialized dependencies for testing and quality assurance
+
+# Testing Framework
+pytest-mock>=3.12.0
+pytest-asyncio>=0.21.0
+pytest>=7.4.0
+
+# Code Quality
+black>=23.9.0
+flake8>=6.1.0
+mypy>=1.6.0
+pre-commit>=3.4.0
+
+# Coverage
+pytest-cov>=4.0.0