Add comprehensive book generation tracking and research documentation

.kilocode/rules/memory-bank/context.md

@@ -40,6 +40,29 @@
   - Automatic recovery tracking: Successfully read regions removed from state file
   - Dynamic state persistence: State updated only with remaining failures
   - 16/17 integration tests passing (pre-existing failure unrelated to feature)
+- ✅ **Book Generation Tracking** (Version 1.0.4)
+  - Tracks book copy tier (generation): 0=Original, 1=Copy of Original, 2=Copy of Copy, 3=Tattered
+  - Multi-format NBT extraction: Handles both pre-1.20.5 (tag.generation) and 1.20.5+ (components) formats
+  - Generation metadata in all outputs: Stendhal files, CSV exports, mcfunction commands
+  - New CSV columns: Generation (integer), GenerationLabel (human-readable)
+  - New Stendhal fields: generation, generation_label
+  - Generation NBT preserved in all mcfunction commands (1.13, 1.14, 1.20.5, 1.21)
+  - Generation included in shulker box book NBT for all versions
+  - Enables provenance tracking and understanding book genealogy
+  - Resolves GitHub issue #7 (generation tracking implemented; .duplicates folder logic deferred)
+- ✅ **Duplicates Folder Post-Processing & Testing Documentation** (Version 1.0.5)
+  - Implemented parseStendhalFile() helper: Extracts generation, title, pages, and content hash from .stendhal files
+  - Implemented ensureOriginalsNotInDuplicates() post-processing: Ensures original books (generation=0) never in .duplicates/
+  - Smart swapping logic: Original in duplicates swaps with copy in books/, or moves if no swap available
+  - Collision handling: Automatic filename deduplication when moving files
+  - Integrated into runExtraction() workflow: Runs after all books written, before CSV exports
+  - Comprehensive error handling: Graceful failures with warnings, no crashes on corrupt files
+  - **Extensive Research & Documentation** (40+ WebSearch/WebFetch operations performed):
+    - testing-strategies.md (1000+ lines): Complete Spock 2.4 framework guide, data-driven testing, mocking/stubbing, integration patterns, file I/O testing, NBT testing, performance optimization
+    - integration-test-specs.md (800+ lines): 40+ test case specifications covering generation extraction, duplicates logic, output formats, multi-version compatibility
+    - Research covered: Spock best practices, Groovy power assertions, test fixture generation, edge case handling, world corruption testing, duplicate detection algorithms
+  - Completes GitHub issue #7 implementation (generation tracking + .duplicates logic fully implemented)
+  - Total documentation added: 1800+ lines of comprehensive testing guidance
 
 ## Current Focus / Active Areas
 - **Maintenance Mode**: Monitoring for new Minecraft version releases