Sprint 3 complete: Phases 3g+3h (Steps 68-75), all 75 steps done

Phase 3g — Optimization Pipeline (17/17 tests):
  Step 68: TransformEngine — constant folding, dead code elimination, OptimizationLock warning
  Step 69: StrategyAwareOptimizer — annotation-constrained (@Reclaim allows, @Owner blocks duplication, @Deallocate blocks reorder, @Allocate blocks dynamic)
  Step 70: StrategyValidator — post-optimization invariants (use-after-free, leak, aliasing)
  Step 71: IncrementalOptimizer — transform journal, undo by ID, provenance tracking

Phase 3h — Integration & Validation (26/26 tests):
  Step 72: Pipeline — end-to-end parse→infer→validate→optimize→generate for Python/C++
  Step 73: Error handling — empty ASTs, null roots, nonexistent IDs, unannotated code
  Step 74: Performance benchmarks — 1000-fn AST 1ms, JSON round-trip 4ms, 50 transforms+undo 1ms
  Step 75: APIDocGenerator — structured docs for 23 components across 6 categories

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

editor/tests/step69_test.cpp

@@ -20,30 +20,7 @@
 #include "ast/Expression.h"
 #include "ast/Annotation.h"
 
-// Forward declaration — StrategyAwareOptimizer
-class StrategyAwareOptimizer {
-public:
-    struct OptResult {
-        bool applied;
-        std::string warning;
-        std::string blocked;   // Non-empty if optimization was blocked by annotation
-        int nodesModified;
-    };
-
-    void setRoot(ASTNode* root);
-
-    // Try to inline a variable (replace references with the value)
-    OptResult inlineVariable(const std::string& variableId);
-
-    // Try to reorder statements for efficiency
-    OptResult reorderStatements(const std::string& functionId);
-
-    // Try to duplicate/clone a node for parallelism
-    OptResult duplicateNode(const std::string& nodeId);
-
-    // General optimization respecting all annotations
-    OptResult optimizeFunction(const std::string& functionId);
-};
+#include "StrategyAwareOptimizer.h"
 
 int main() {
     int passed = 0;