Class PronounMemory

Test seam: clear the entire stash. Production code never calls this (the stash is alive for the duration of the giver's lifecycle); tests use it between cases.

Read a slot. Returns null when nothing's been stored. The resolver maps the returned result.stuff array to MqlMatch records, stamping result.via (when present) on each.

Read the input fragment that produced a slot, or null when the slot is empty. Used by the dispatcher to substitute for dynamic-pronoun queries during scope update — look it becomes look <stored fragment> for scope-anchor purposes.

Update the stash from a resolve result. The dispatcher calls this once per resolveAndValidate MQL field.

• Empty results no-op.
• Inputs that are themselves dynamic pronouns no-op.
• Otherwise: last always updates; the gendered slot corresponding to the matched Stuff's pronouns updates for single-stuff results; multi-stuff results route to them.

slotFor is provided by the caller because MixinApi.isGendered lives on the wrong side of the dependency graph for direct use here (mql/pronoun-memory.ts would re-enter command.ts via mixin.ts's import chain). The dispatcher passes a routing fn that knows the gender mapping.