John Dvorak
4d498b07e8
An evidence whose config contains a chain step referencing ITSELF is now unrolled at compile time into a bounded transitive closure: a union of paths — base, hop+base, hop²+base, …, hop^N+base — where `hop` is the recursive chain's steps before the self-reference and the depth N comes from the pattern's `limit N` (or the compiler's maxRecursionDepth default, 3). The base (the evidence's non-recursive statements) is verified as a condition step at each path's terminal node, so the engine needs no new machinery. - Chain configs carry the pattern's `limit` as maxDepth. - resolveEvidenceReferences detects a self-reference (_findSelfReference), extracts the base (_extractBase), and unrolls (_unrollRecursiveEvidence). - Pure recursion with no base case is a compile-time error; mutual cycles between distinct evidence remain a compile-time error. Example: can_access_via = can_access OR (reports_to + can_access_via) up to the declared limit grants access inherited up a reporting chain. Tests: Recursion (unroll shape, base + multi-hop grants, depth-limit enforcement, default depth, pure-recursion error, mutual-cycle guard).