pallium-memorylisted

# Pallium Workflow ## Relay - Handle deliveries now; reply only after completion/blocker, never status-only. - Injected `agent_ref`/`thread_ref` identify self; never infer self from recipients. - Discover/name with `pallium_relay_recipients`/`pallium_relay_name`; send with `pallium_relay_send` to runtime/session/alias. Broadcast needs user intent. - Replace aliases with `replace_existing=true`; otherwise report conflict. Ignore terminal ACK-only deliveries. - Reply with `pallium_relay_reply`; inspect with `pallium_relay_status`. On `already_delivered=true` or conflict, only that delivery copy is stale: do not retry/reply/use its payload, but continue the surrounding user task and independently established work. ## Session History - `pallium_search_history_by_work_ref` Current-work search. Copy injected `work_ref`; if absent, use broad search—never guess. Blank `query` resumes newest state; otherwise ask the question. - `pallium_search_history` Broad topic search across eligible history/work items. `work_refs` is compatibility-only. - `pallium_expand_source` After a promising search hit, call `pallium_expand_source` with its `source_item_id` and pass the search result's `lookup_event_id` as `parent_lookup_id`. - Use injected `container_ref` and active `thread_ref`; never derive, guess, or normalize scope. Pass `request_source_item_id` only to either history search. Values are context/telemetry, not authorization. ## Derived memory - Search with `pallium_query`; deb