Decision Drift Guard

A supersession is a new accepted user decision replacing an earlier one. Make it explicit before consequential work.

Steps

1. Load the ledger. Path: .agents/decision-ledger/sessions/<session-id>.md relative to worktree root. Use host session ID or derive from first request. Each session reads/writes only its own file. Filesystem fails: keep ledger in context, say persistence unavailable.

2. Track decisions. One line per active decision: D-<n> | scope | chosen approach | acceptance. Suggestions stay proposed until user accepts.

3. Classify new statement against active decisions in same scope: