Add CHANGELOG.md

CHANGELOG.md

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+# Changelog
+
+
+#### **sn-manager Tool (#114)**
+- **Commands**: `init`, `start`, `stop`, `status`, `get`, `ls`, `ls-remote`, `check`, `use`
+- **Key Features**:
+  - Automated supernode lifecycle management with process supervision
+  - GitHub integration for release downloads and automatic updates
+  - Automatic Zero Downtime updates
+  - Manual Version management with semantic versioning support
+  - Configuration management with YAML support
+
+
+#### **Enhanced Status API (#112)**
+- **Detailed metrics integration** - Added comprehensive system metrics to status responses
+- **New Response Fields**:
+  - Version information and build details
+  - CPU, memory, and disk usage metrics with percentages
+  - Network statistics and active connection counts
+  - Cascade service performance metrics and task enumeration
+  - System uptime and resource utilization tracking
+  - SuperNode ranking and peer information
+
+
+#### ** sncli **
+
+- **gRPC reflection support** for dynamic service/method introspection
+- **Security Features**:
+  - Secure gRPC connections with Lumera keyring authentication
+  - TLS certificate validation and encrypted communications
+  - Command-line config overrides and environment variable support
+
+### Improvements & Optimizations
+
+#### **Context Handling & Server Optimization (#119)**
+- **Background task improvements** - Implemented detached contexts for SDK background operations
+- **gRPC server optimization** - Enhanced settings for improved file size handling and performance
+- **Error handling enhancements** in cascade action servers with better context propagation
+- **Scope**: 8 files modified across SDK task management and supernode server components
+
+#### **Configuration Refactoring (#122)**
+- **Network interface consistency** - Unified network configuration across all components
+
+
+#### **CI/CD Workflow Optimization (#120)**
+- **GitHub Actions streamlining** - Reduced workflow complexity 
+- **Build process improvements** for both supernode and sn-manager components
+- **Enhanced pipeline** with better job organization and dependency management
+- **Performance**: Faster build times and improved resource utilization
+
+###  Bug Fixes
+
+#### **P2P Connection Reliability (#117)**
+- **Fixed connection deadlines** in Kademlia DHT operations preventing timeouts
+- **Credential separation** eliminate a race condition by using difference credentials manager
+
+#### **Logging System Improvements (#115)**
+- **Disabled stacktrace by default** for all log levels to reduce noise in production
+
+
+
+
+### 📋 API Changes & Compatibility
+- **New RPC Endpoints**: `ListServices` for service discovery and introspection
+- **Enhanced Responses**: `StatusResponse` includes hardware, network, and performance metrics
+