[Junie]: Schemaジェネリックラッパー追加とIDE補完対応プルリクレビュー

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• 🔗 Issue: Fixes: Add Schema[T] generic wrapper and type-safe @overload signatures to enable IDE type completion on validate return values #9
• ⚙️ Trigger: Pull request

📊 Junie Summary

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In general, to fix "statement has no effect" warnings where ... is used as a function body, replace the bare ellipsis expression with pass, which is the idiomatic no‑op statement in Python. This keeps the function as a stub without changing behavior.

Here, each overload in the if TYPE_CHECKING: block ends with ) -> ...: .... The ellipsis body is only there as a placeholder, so the best fix is to change ... to pass on each overload definition, including the one on line 204 that CodeQL highlights. This keeps the overloads valid and understandable to type checkers and human readers, while eliminating the no‑effect expression statement. No imports or additional definitions are required.

Concretely, in src/validkit/validator.py, within the if TYPE_CHECKING: block starting around line 171, update all four def validate(...) -> ...: ... overloads so their bodies are pass instead of ....