Truthound 2.0 Release Notes

Highlights

• Introduced truthound.core with explicit contracts, suite, planning, runtime, and results layers
• Refactored th.check() into a compatibility facade over the new kernel
• Added ValidationRunResult, CheckResult, and ExecutionIssue
• Unified plugin lifecycle management behind PluginManager
• Recast EnterprisePluginManager as an async capability facade
• Removed the dead use_engine public surface
• Added architecture, parity, backend conformance, and plugin-platform tests
• Added docs link checking, mkdocs configuration cleanup, ADRs, and docs CI hooks

Breaking Changes

• use_engine is no longer accepted by th.check()
• truthound check --use-engine is no longer supported
• top-level exports are intentionally narrower

Compatibility Notes

• the legacy Report type remains available
• report.validation_run exposes the structured kernel result
• advanced systems remain importable by namespace

Verification Snapshot

The redesign is covered by targeted validation of:

• public API behavior
• planner/runtime parity
• SQL pushdown routing
• plugin runtime unification
• CLI plugins snapshots

See the Migration Guide for upgrade details.