chore(security): enhance environment configuration, CI workflows, and wallet daemon with security improvements

- Restructure .env.example with security-focused documentation, service-specific environment file references, and AWS Secrets Manager integration
- Update CLI tests workflow to single Python 3.13 version, add pytest-mock dependency, and consolidate test execution with coverage
- Add comprehensive security validation to package publishing workflow with manual approval gates, secret scanning, and release

dev/cache/aitbc_cache/__init__.py

@@ -0,0 +1,47 @@
+"""
+AITBC Event-Driven Cache Package
+
+Provides distributed caching with event-driven invalidation for GPU marketplace
+and other real-time data that needs immediate propagation across edge nodes.
+"""
+
+from .event_driven_cache import (
+    EventDrivenCacheManager,
+    CacheEventType,
+    CacheEvent,
+    CacheConfig,
+    cache_manager,
+    cached_result
+)
+
+from .gpu_marketplace_cache import (
+    GPUMarketplaceCacheManager,
+    GPUInfo,
+    BookingInfo,
+    MarketStats,
+    init_marketplace_cache,
+    get_marketplace_cache,
+    marketplace_cache
+)
+
+__version__ = "1.0.0"
+__author__ = "AITBC Team"
+
+__all__ = [
+    # Core event-driven caching
+    "EventDrivenCacheManager",
+    "CacheEventType", 
+    "CacheEvent",
+    "CacheConfig",
+    "cache_manager",
+    "cached_result",
+    
+    # GPU marketplace caching
+    "GPUMarketplaceCacheManager",
+    "GPUInfo",
+    "BookingInfo", 
+    "MarketStats",
+    "init_marketplace_cache",
+    "get_marketplace_cache",
+    "marketplace_cache"
+]