[apresmoi]

Implements training phase P4 (rewind): materialize one trial's inputs at the dataset example's instant, without running cognition.

spawnfile train ./Spawnfile --agent agent:writer --materialize [role:]<example> --history DIR --out OUT

• Inputs = every effective workspace resource, accessible memory bank and attached Moltnet network; example overrides replace declarations by id (P2 resolution). Every input is materialized or the moment is refused - never today's data.
• git/bundle: declared full-hex pin, moment-record pin, deploy resource log (deployResourcesAt), else first-parent commit dated at or before the instant (approximate). Clean repository holding only objects reachable from the chosen commit; raw blob extraction (no export-subst); bundles exact only with a matching recorded sha256.
• Fed volumes: record or landing log (feedLandingAt; transition window = approximate), else the feed rule evaluated at the instant incl. ${date:<zone>} paths (approximate). Bytes verified against the revision; prepared output labelled approximate.
• Memory: Mneme ledger prefix (cut, never filter); no derived index or audit files (Mneme rebuilds the index from the ledger before every read). Generations refused (Mneme has none).
• Moltnet: JSON and SQLite stores cut at the instant (messages, threads, rooms, attachment events, future agent registrations); memberships otherwise best-effort as now.
• Unfed volumes: recorder snapshot trees verified against their manifests; refused without a snapshot unless overridden.
• Moment records consumed in the merged spawnfile.moment-record.v1 format; a matched record moves the trial instant to its wake.startedAt.
• Fidelity per input: exact | approximate | overridden, with basis and notes, in moment.json.
• Independent leak check re-reads the bundle from disk (file times incl. atime, git objects/index/worktree payload anywhere, memory, Moltnet, feed provenance and bytes, dated paths, snapshots, symlink escapes, closed layouts) and refuses on any finding; refusal leaves only the report.
• Task-clock contract helpers (NOOPOLIS_TASK_CLOCK for the harness, libfaketime offset or MNEME_CLOCK_* for child processes - exactly one offset owner per process), range 1970-9999.
• Spec: specs/TRAINING.md "Rewind" section plus generated schemas for spawnfile.materialized-moment.v1, spawnfile.leak-check.v1, spawnfile.task-clock.v1.

Related: noopolis/mneme#4 (injectable clock), noopolis/daimon-harness#45 (task-clock consumer, draft).