Move InMemoryDiagnosticReportExporter and InMemoryConfigurationGroupFileExporter
from App/PlatformEffects to Tests/Support: both are test doubles with no
production caller, and production composition wires only the AppKit adapters.
Delete RuleRuntimeCompiler.validation, a wrapper whose only callers were two
assertion blocks in the controller deployment test; those restated
custom-to-custom shadowing and validation order-independence, both pinned by
CustomRuleValidatorTests and RuleAnalysisTests. RuleRuntimeCompiler.compile
stays and keeps its production caller.
Co-Authored-By: DeepSeek Harness <noreply@deepseek.com>
Qiu YuzhouandDeepSeek Harness