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BENCHMARK_PYTHON.md updated through Round 10. The stress-test suite went from 22 patterns (19 hard / 3 KNOWN GAP) to 43 patterns (all hard-asserted PASS). Bench held at 100% (52/52) across the surface expansion. Patterns added in Round 10 cover the framework / real-world cases that distinguish parity-with-LSP from passing-toy-fixtures: SQLAlchemy 2.0 Mapped[T], Pydantic BaseModel, async with / async for, Callable[..., R], next(iter), **kwargs annotation, dict-literal dispatch tables, lambda call-site inference, recursive types, classmethod-to-method chains, dataclass default_factory, nested match patterns. The original Phase 11 plan called this category "compiler-grade". The actual line where compiler-rebuild starts is now narrower: constraint solving for ParamSpec, code-flow narrowing across basic blocks, custom metaclass __call__, and full descriptor protocol. None of those are needed for what's resolved on the bench fixture or the stress suite.