Plain English
Keep startup context focused on current truth and active constraints.
Technical summary
Long reports, old chats, and historical snapshots belong in cold memory until a reviewed fact is promoted.
Deep spec
Do not let broad research notes silently widen public support or certification claims.
Budget rule
- Hot memory: current facts, constraints, decisions, progress, and tests.
- Cold memory: background reports, old drafts, and long evidence snapshots.
- Promotion path: reviewed change to code, docs, schema, fixture, release note, or public page.