Implement Fuzzy Search and Natural Language Processing

[DrunkOnJava]

🔍 Natural Language Search Implementation

Current State

• Comment in ItemsListViewModel.swift indicates search removed for natural language search
• No actual NLS implementation found
• NaturalLanguageSearchService exists but not integrated

Required Implementation

1. Integrate NaturalLanguageSearchService

   • Connect to ItemsListViewModel
   • Implement search queries parsing
   • Add fuzzy matching algorithms

2. Search Features

   • Natural language queries ("items bought last month")
   • Fuzzy matching for typos
   • Search suggestions/autocomplete
   • Search history

3. Performance Optimization

   • Index items for fast search
   • Implement search caching
   • Background indexing for new items

Files to Update

• Modules/Items/Sources/ViewModels/ItemsListViewModel.swift
• Modules/Core/Sources/Services/NaturalLanguageSearchService.swift

Acceptance Criteria

• Natural language queries work correctly
• Sub-second search response time
• Search suggestions appear as user types
• Unit tests for search algorithms

Parent Epic

Related to #102 (Testing Infrastructure) and #106 (UI/UX Gaps)

[DrunkOnJava]

Closing: This issue has been resolved/superseded by the complete modular architecture restructure now in main branch (commit 33a0ead). The new architecture implements a comprehensive solution that addresses the core needs this issue was tracking.