feat(mab): integrate Lin-Kernighan with Multi-Armed Bandit scheduler

.kiro/specs/evolab/tasks.md

@@ -114,13 +114,17 @@
   - _Requirements: FR-LS-003_
   - _Pull Request: Ready for review_
 
-- [ ] 6.2 Integrate Lin-Kernighan with Multi-Armed Bandit scheduler
-  - Extend AdaptiveOperatorSelector to support local search operators alongside crossover
-  - Implement performance tracking for Lin-Kernighan moves (improvement rate, execution time)
-  - Add Lin-Kernighan as optional local search component in configuration system
-  - Create hybrid Memetic GA configuration templates combining crossover and Lin-Kernighan
+- [x] 6.2 Integrate Lin-Kernighan with Multi-Armed Bandit scheduler
+  - ✅ Extended AdaptiveOperatorSelector pattern to support local search operators alongside crossover
+  - ✅ Implemented LocalSearchOperator concept for type-safe local search algorithm interface
+  - ✅ Created AdaptiveLocalSearchSelector class with UCB and Thompson Sampling support
+  - ✅ Added performance tracking: execution time (chrono-based) and improvement rate via OperatorStats
+  - ✅ Comprehensive test suite with 21 tests (test_mab_local_search.cpp) - all passing
+  - ✅ Support for LinKernighan, TwoOpt, and Random2Opt local search operators
+  - ⚠️ Configuration system integration deferred (requires runtime operator selection design)
+  - ⚠️ Hybrid Memetic GA templates deferred (awaiting config system enhancement)
   - _Requirements: FR-LS-003, FR-AC-001_
-  - _Note: Basic LK integration with GA complete; MAB scheduler extension is future enhancement_
+  - _Note: Core MAB local search integration complete; config templates are future enhancement_
 
 #### 7. Diversity Maintenance Implementation
 - [ ] 7.1 Implement population diversity metrics

include/evolab/evolab.hpp

@@ -61,6 +61,7 @@
 #include <evolab/operators/selection.hpp>
 
 // Local search algorithms - memetic algorithm components
+#include <evolab/local_search/lk.hpp>
 #include <evolab/local_search/two_opt.hpp>
 
 // Adaptive operator scheduling - multi-armed bandit approaches