# Phase 119: Scratchpad Runtime And CLI Surface - Context

**Gathered:** 2026-04-11
**Status:** Implemented and verified
**Mode:** Main production phase for `v1.62`

<domain>
## Phase Boundary

Materialize the scratchpad surface through extracted helpers, topic-shell
write-through, runtime bundle exposure, and CLI entrypoints.

</domain>

<decisions>
## Implementation Decisions

### Locked decisions

- keep scratch and negative-result memory distinct from canonical scientific
  memory
- record structured scratch rows in a topic-scoped runtime ledger
- reuse the status/dashboard/runtime-bundle surfaces instead of inventing a
  parallel reporting stack

</decisions>

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*Phase: 119-scratchpad-runtime-and-cli-surface*
*Context captured on 2026-04-11 after Phase 119 implementation and verification*
