Корректная очистка вершинных каналов в CollisionMeshBuilder

[SashaRX]

Motivation

• Исправить неэффективную очистку каналов вершины у сгенерированных collision-мешей: Mesh.Clear() по умолчанию сохранял декларацию вершинного layout и не удалял лишние атрибуты (нормали, тангенты, UV, цвета), хотя данные очищались.

Description

• В Editor/CollisionMeshBuilder.cs заменено mesh.Clear(); на mesh.Clear(false);, чтобы удалить прежнюю разметку каналов и затем восстановить только позиции и треугольники; поведение по пересчёту границ и именованию сохранено.

Testing

• Выполнены автоматизированные проверки: git diff --check прошёл успешно, статическая проверка наличия mesh.Clear(false); обнаружила ровно один вхождение, и коммит создан (Fix collision vertex channel stripping); запуск Unity EditMode-тестов невозможен в контейнере (Unity не установлен).

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Codex Task

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Review details

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Configuration used: Organization UI

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📥 Commits

Reviewing files that changed from the base of the PR and between 21d382e and 86b00f2.

📒 Files selected for processing (1)

• Editor/CollisionMeshBuilder.cs

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[SashaRX]

Фикс вошёл в консолидированную ветку claude/security-pr-analysis-fmpzf0 коммитом 543795e. Закрыт как superseded.

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