claude@clouddev1
9bbb96e735
Node::DynamicSubgrammar factories build a Node from the WalkContext and must Box::leak it (the Node enum's combinator children are &'static). Leaking per walk grew unbounded under per-keystroke completion (handoff-12 §2.1). resolve_dynamic now memoizes on the schema state a factory reads (table columns, current column, user-listed columns) keyed by factory fn-pointer. Each distinct value-list shape leaks exactly once — total leak bounded by distinct (schema × form) combinations, not keystroke count. TableColumn gains Hash for the cache key. The handoff's original arena sketch needed a lifetime-generic Node (major refactor); memoization gets the same bound without it.