Decision Drift Guard

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:

1. Gate 1 (supersession or conflict only): Show old decision, new instruction, impact. Ask: replace, branch, or refine. Wait for choice.
2. Gate 2 (after replacement confirmed): Touches architecture, public behavior, data shape, security, cost, or irreversible actions: run

   /grilling

   and wait. Otherwise: which old assumption dies, what changes, what must stay.
3. Commit supersession. Mark old record superseded. Link new with

   supersedes: D-<n>

   . Recompute plan, tests, tool actions. Label stale recommendations.

First pass format

• Ledger: loaded or unavailable.
• Classification: supersession or conflict.
• Old decision:

  <old>

  . New instruction:

  <new>

  . Impact:

  <changes>

  .
• Paused. Choose:

  replace

  ,

  branch

  , or

  refine

  .