chore: Update CHANGELOG for version 0.3.1, adding new features and enhancements

Author: sergism77

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 #### 🧠 Intelligent Security Profiles System
+
 - **5 Basic Security Profiles**: Document, Media, Credentials, Backup, Custom with auto-detection
 - **19+ AI-Powered Profiles**: Financial, Medical, Legal, Technical, Government, and specialized profiles
 - **Content Analysis Engine**: AI analyzes file content to detect sensitive patterns and recommend optimal security
@@ -18,34 +19,39 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **Interactive Recommendations**: `recommend_profile_interactive()` provides detailed guidance
 
 #### ⚡ High-Performance Streaming Engine
+
 - **Ultra-Fast Streaming**: >100GB file support at 50+ MB/s throughput
 - **Constant Memory Usage**: Only 7MB RAM regardless of file size
 - **Upfront Decoy Validation**: 3-5x faster decryption via early validation
 - **Streaming Integration**: Works seamlessly with all security profiles
 - **Automatic Optimization**: Perfect chunk sizes and buffer management
 
 #### 🖥️ Command-Line Interface
+
 - **Simple Commands**: `stc-cli encrypt --intelligent` handles everything automatically  
 - **Smart Analysis**: `stc-cli analyze` provides detailed file recommendations
 - **Batch Operations**: Encrypt/decrypt entire folders with profile optimization
 - **No Programming Required**: Accessible to non-technical users
 - **Cross-Platform Support**: Windows, macOS, Linux compatibility
 
 #### 🔒 Adaptive Security Manager
+
 - **Threat Detection**: Automatically detects attack patterns and responds
 - **Context-Aware Security**: Adjusts protection based on environment and usage
 - **Compliance Integration**: HIPAA, GDPR, SOX-compliant profiles available
 - **Security Learning**: System learns from usage patterns to improve recommendations
 - **Audit Trail**: Complete logging of security decisions and adaptations
 
 ### Enhanced
+
 - **User Manual**: Comprehensive documentation with step-by-step guides for all user levels
 - **API Integration**: Security profiles integrated with existing STC API
 - **Test Coverage**: 100+ tests including intelligent security system validation
 - **Performance**: Profile-specific optimizations for different file types
 - **Documentation**: Real-world scenarios and practical examples
 
 ### Changed
+
 - **Development Status**: Upgraded from Alpha to Beta (production-ready)
 - **Target Audience**: Expanded from developers to include non-technical users and enterprises
 - **CLI Entry Point**: Updated to `stc-cli` for better user experience
@@ -56,6 +62,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 #### Feature 1: Entropy Health API
+
 - **Quality scoring system**: 0.0-1.0 score based on lattice diversity, operation count, and state variance
 - **Status classification**: EXCELLENT (0.9+), GOOD (0.8-0.9), ACCEPTABLE (0.7-0.8), WEAK (<0.7)
 - **Threshold enforcement**: Auto-reject encryptions below minimum entropy threshold
@@ -66,6 +73,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `STCContext.set_minimum_entropy_threshold(threshold)` - Sets auto-rejection threshold
 
 #### Feature 2: Enhanced Decoy Polymorphism
+
 - **Variable lattice sizes**: Decoys use randomized dimensions (32×3 to 96×5)
 - **Randomized decoy count**: Actual count varies ±2 from specified value
 - **Timing randomization**: Optional 10-30ms jitter between operations (opt-in)
@@ -80,6 +88,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `noise_padding` (default: False)
 
 #### Feature 3: Context-Adaptive Morphing
+
 - **CEL-delta-driven intervals**: Morphing interval adjusts based on CEL state changes
   - High change: 50 operations (aggressive morphing)
   - Medium change: 100 operations (balanced)
@@ -89,6 +98,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `STCContext.pcf.get_adaptive_status()` - Returns adaptive morphing state
 
 #### Feature 4: Adaptive Difficulty Scaling
+
 - **Oracle attack detection**: Monitors for repeated decrypt attempts with tampered data
 - **Dynamic path scaling**: PHE path count increases from 7 to 15 under attack
 - **Timing randomization**: Adds delays to prevent timing analysis
@@ -97,6 +107,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `adaptive_difficulty` - Sets initial difficulty level
 
 #### Feature 5: Streaming Support
+
 - **Chunk-based encryption**: Processes data in configurable chunks (default 1MB)
 - **Memory efficient**: Avoids loading entire large files into memory
 - **Progress callbacks**: Optional callback for UI progress updates
@@ -105,6 +116,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `STCContext.decrypt_stream(chunks, metadata, progress_callback)` - Yields decrypted chunks
 
 #### Feature 6: Metadata Compression Enhancement
+
 - **RLE + varint compression**: Run-length encoding for zeros + variable-length integers
 - **Dictionary encoding removed**: Ineffective for pseudo-random CEL data (51% unique values)
 - **Compression ratio**: ~66% compression for typical lattice data
@@ -113,18 +125,21 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 #### Security-First Philosophy
+
 - **All security features ENABLED by default**: Decoys, polymorphism, adaptive morphing
 - **Performance through optimization**: Achieved 2.9x speedup via smaller decoy lattices, NOT by disabling features
 - **Professional approach**: "Security first, optimize implementation" vs "disable features for speed"
 
 #### Performance Improvements
+
 - **Decoy lattice optimization**: Real CEL 128×128×6, Decoys 64×64×4
   - 5.8x faster per decoy while maintaining plausible deniability
   - Total speedup: 2.9x (5.2s → 1.8s with 3 decoys enabled)
 - **Encryption time**: ~1.8s with full security features (3 decoys, polymorphism)
 - **Metadata size**: ~486KB with 3 decoys (vs 276KB without decoys in v0.2.1)
 
 #### API Enhancements
+
 - `encrypt()` now accepts:
   - `use_decoys=True` (ENABLED by default)
   - `num_decoys=3` (default count)
@@ -366,6 +381,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 **Password hashes**: Must be regenerated (v0.1.x hashes incompatible)
 
 **API changes**:
+
 ```python
 # v0.1.x
 encrypted, metadata_dict = ctx.encrypt(data)
@@ -377,6 +393,7 @@ encrypted, metadata_bytes = ctx.encrypt(data, password="secret")
 ```
 
 **New features** (opt-in):
+
 ```python
 # Use decoy vectors (default: enabled)
 encrypted, metadata = ctx.encrypt(data, use_decoys=True, num_decoys=3)
@@ -389,6 +406,7 @@ encrypted, metadata = ctx.encrypt(data, password="custom_password")
 ```
 
 **Audit logs**:
+
 ```python
 # Check CEL entropy quality
 cel_audits = ctx.cel.get_audit_log(limit=10)