fix(io): consolidate managed snapshots and retain cleanup ownership

Reuse managed snapshot admission and hashing in sequential path comparisons, retaining caller paths and completed inspection Evidence on later failure. Preserve exact failed-close owners alongside typed read and cancellation failures, and retry them through caller-owned resource scopes. Require canonical Hopper lease identities, remove signed offset coercion, and repair stale setup cleanup expectations that failed CI.

docs/managed-code-analysis.md

@@ -53,6 +53,12 @@ CIL decoding, and projected inspection records have a separate conservative
 output occurrences still consume that budget. These are inspection resource
 policies, not PE format limits or a hard bound on total V8 heap use.
 
+Path-based member comparison uses the same per-input snapshot policy and
+inspects its two selected paths sequentially, retaining each inspection rather
+than both full byte snapshots. The limit therefore remains a per-file resource
+admission rule, not an aggregate comparison limit. Comparison Evidence keeps
+the caller-selected paths as its parameters and artifact locations.
+
 Input overflow returns a resource constraint. Decode or projection overflow
 reports `resource-limit` with unavailable or partial coverage; omitted facts do
 not become empty observations. Ambiguous PE section mappings are rejected