🏗️ Consolidate fragmented memory system into unified architecture

[Copilot]

Problem

The Echo memory system was fragmented across 9 separate files with overlapping functionality, creating maintenance challenges and architectural inconsistencies:

• 5 redundant test files with duplicated test logic
• 2 overlapping demo files showing similar functionality
• 1 bloated memory adapter (421 lines) reimplementing core features
• Inconsistent interfaces and scattered documentation
• Difficult to maintain and extend

Solution

Consolidated the fragmented memory system while preserving all functionality and maintaining full backward compatibility:

Key Consolidations

Test Suite Unification (5 → 1 file)

• Combined test_memory_integration.py, test_unified_memory.py, test_unified_echo_memory_standardized.py into comprehensive test_echo_memory_demo_standardized.py
• Enhanced with 17 comprehensive tests covering integration, performance, and compatibility
• All tests passing ✅

Demo Consolidation (2 → 1 file)

• Merged demo_memory_unification.py with enhanced functionality demonstration
• Shows complete unified system: memory types, operations, search, echo, adapter, analysis
• Comprehensive 8-section demonstration ✅

Memory Adapter Streamlining

• Reduced from 421 to 292 lines (30% reduction)
• Focused on backward compatibility without duplicating core functionality
• Clean delegation to unified memory system

Architecture Improvements

• Single source of truth: unified_echo_memory.py remains the comprehensive implementation
• Clean separation of concerns: Each file has a distinct, focused responsibility
• Streamlined dependency graph: Eliminated circular dependencies and redundancy
• Enhanced maintainability: 33% fewer files to maintain
• Preserved compatibility: All legacy imports and interfaces continue to work

Verification

# All core functionality preserved
from unified_echo_memory import create_unified_memory_system, MemoryType
memory_system = create_unified_memory_system('test')
result = memory_system.store_memory('Test', MemoryType.DECLARATIVE, echo_value=0.8)
# ✅ Success: True

# Backward compatibility maintained  
from memory_adapter import MemoryAdapter
adapter = MemoryAdapter('legacy_test')
memories = adapter.search_memories('query')
# ✅ All legacy methods work

Results: 9 files → 6 files (33% reduction), zero functionality lost, all tests passing, comprehensive documentation, full backward compatibility maintained.

Fixes #525.

---

💬 Share your feedback on Copilot coding agent for the chance to win a $200 gift card! Click here to start the survey.