archive-experiencelisted

# archive-experience Calibrated workflow for retiring `docs/experience/{wins,errors}/` entries into the frozen archive. Modeled on deepseek-harness's `dsh-archive-agent-notes` skill: archival is a seal, not a deletion, and the decision criterion is future decision value, not age or word count. ## When to run - The weekly hygiene sweep (see CHANGELOG section of AGENTS.md). - `scripts/check_repo_hygiene.py` warns that wins/errors approach the cap. The cap is a hard gate, so when it approaches, archival is forced — but the *selection* is still future-value-ranked, not blind oldest-first. - An entry is fully superseded by a newer one on the same topic. ## Classification (the decision) Judge every candidate semantically. Age and zero inbound references are discovery aids, never the criterion. - **Archive** when the shipped decision is complete and the body is unlikely to guide future work: one-off bench snapshots whose numbers are superseded, a narrow workaround for a since-fixed bug, process history whose current behavior is obvious from the code, an entry fully superseded by a newer one on the same axis. - **Keep** when the entry still carries future leverage: a binding constraint or roofline number still quoted in planning, a negative result that prevents re-litigating a tempting path, a reintroduction condition, a measured bound a future optimization must beat. - **Supersession check when adding an entry**: every new wins/errors entry triggers a scope