Generate code using Revit {REVIT_VERSION} API (use with gpt-5.2-codex)
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Write a pyRevit (CPython 3.9) script that collects all Rooms, sums their Area per Level, and writes the total into a project parameter `Level Total Area`. Use explicit transactions, proper .NET collections, and handle missing parameters gracefully. Return a dict[LevelId, double] as a result. If `CodexWorkspace/workspace/development.md` exists, follow its architecture and naming.
