issue-121-evolution-tolerance-audit
IN premise
Issue #121: Audit evolution tolerance at all system boundaries — not all boundaries have documented forward-compatibility mechanisms
Summary
Some parts of the system handle evolving or changing data formats at their boundaries, but not all boundaries have clear rules for how they'll stay compatible as things change. This means there could be hidden fragility where a format change in one component quietly breaks another, and an audit is needed to find and document those gaps.
Dependents
These beliefs depend on this one:
- rich-governance-has-verified-evolution-tolerance — The system's rich governance — deterministic, exception-safe, and source-grounded — combined with gap-free lifecycle source coverage achieves verified evolution tolerance at all system boundaries when the evolution tolerance audit (issue #121) confirms that all boundaries have documented forward-compatibility, completing the governance guarantee across the format/schema evolution dimension.
- system-tolerates-evolution-at-all-boundaries — The system handles format and schema evolution gracefully at every external boundary: derive output parsers support two format versions with automatic fallback, belief import silently skips unknown metadata fields, and storage tolerates missing tables from older database schemas via exception handling