Add Mainland China proxy routing with independent rule workspaces.
Preserve existing routing choices through equivalent preset mappings.
BREAKING CHANGE: existing custom rules and enablement settings are
not migrated. Recreate them in the appropriate preset.
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>
Make systemProxyConfiguration total so a runtime document can no longer
swallow derivation via try? and silently skip desired system proxy
convergence. Delete the unreachable ProxyModeError / .mode failure fact
and its presentation; port validity stays at the settings store and the
document contract.
Qiu Yuzhou
