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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>