plastic-intent-savepoint

# Savepoint `savepoint.md` is a deterministic, append-only ledger of an intent's cycle steps, one line per lifecycle milestone, newest at the bottom: ``` 2026-06-16T14:02Z What 34--cycle-step-savepoints.md 2026-06-16T14:20Z Why spec.md created 2026-06-16T15:10Z How plan.md created 2026-06-16T15:11Z How checklist.md created 2026-06-16T16:40Z Exec outcome.md created ``` It is **sugar on top of the conventions**, not a source of truth. The gate hook (`hook-gate-check`) writes each line automatically when a stage file is created, so there is nothing to save by hand. State is always derivable from files-on-disk; the ledger just lets a resuming agent read the cycle's succession from one glance (last line = where we are). ## When to Use - A PreCompact hook fires, or the user says "save" / "savepoint": verify the ledger is current. - Resuming an intent: read the ledger to learn the cycle's succession quickly. - The ledger looks stale, empty, or missing: rebuild it from the filesystem. ## What this skill does NOT do - It does not write prose, "in progress", "next step", or "blockers". The old 50%-context prose savepoint is retired. The semantic trace lives in `## Insights` (append-only, newest at the bottom); the byte history lives in git. ## Workflow ### 1. Find Active Intent(s) Read the active store's `INDEX.md` and extract intents under `## Active`. ### 2. For Each Active Intent — verify the ledger - Read `savepoint.md`. Confirm it exists and is non-empty. ...