Split HTTP verification reads into Assert in C# API and integration tests.
Add # Arrange/# Act/# Assert to GdUnit suites and keep Act free of assertions
where casts and busy guards are under test.
Fix the hotbar client test transport body construction so the suite parses and runs again, and normalize AAA marker ordering in the flagged C# tests to restore readability consistency with the test template.
Audit all test files and bring them in line with formatting/style expectations by adding explicit AAA markers across server test methods and fixing GDScript test lint/format issues.