Enhanced Knowledge Graph Memory Server

# Search Module Search functionality with multiple algorithms and strategies. ## Contents - `BasicSearch.ts` - Simple text search with filters - `RankedSearch.ts` - TF-IDF relevance ranking - `BooleanSearch.ts` - Boolean query parser (AND/OR/NOT) - `FuzzySearch.ts` - Levenshtein-based fuzzy matching - `SearchSuggestions.ts` - Trigram-based auto-complete - `SavedSearchManager.ts` - Search persistence and execution - `SearchManager.ts` - Orchestrator for all search types ## Search Types 1. **Basic**: Text matching with tag/importance filters 2. **Ranked**: TF-IDF scoring for relevance 3. **Boolean**: Complex queries with logical operators 4. **Fuzzy**: Typo-tolerant matching 5. **Suggestions**: Auto-complete based on trigrams 6. **Saved**: Store and reuse frequent searches