Migrate memories into Engram

Everything runs through one CLI bundled with the plugin. It is safe by design: dry-run by default, strictly read-only on the source store, and resumable — a local checkpoint (one per source) records every migrated item, so interrupted or repeated runs never send anything twice.

Invoke it through the wrapper in this skill's scripts/ directory (next to this SKILL.md). It is self-locating — no environment variables or harness-specific paths needed:

bash <this skill's directory>/scripts/migrate.sh [flags]

Flow

1. Detect sources. Run migrate.sh --detect — it lists every supported source and whether its store exists on this machine. If the user already named a source, honor that. If exactly one is present, use it. If several are present, ask the user which to migrate — claude-mem, Claude Code local memories (claude-memory), or both — before doing anything else; each then goes through the full flow below with --source <name>.
2. Dry-run first, always. Run with the user's flags but WITHOUT --execute or --rollback, even if the user included them — those only run after step 4. The dry-run writes nothing and shows exactly what would migrate, so the user decides from facts.
3. Present the report: how many memories per scope and day; which source projects were skipped because their required scope properties could not be resolved — usually the project's directory no longer exists anywhere the CLI looks (offer --map=NAME=owner/repo, or --repos-dir DIR if their repositories live somewhere unusual); and the sample item. Topics are not part of the plan, and the source is not pre-filtered: Engram's extraction classifies each memory into the group's topics and decides what to keep.
4. Ask the user explicitly whether to proceed. Executing writes to their Engram cloud store — never run --execute or --rollback without a fresh confirmation from the user in this conversation.
5. Execute: re-run the same command with --execute appended. Conversations are submitted in chronological order without waiting on each pipeline run (Engram queues internally); the command then waits for the pipeline to settle and reports what committed. Exit codes: 0 done, 1 failed submissions/runs, 3 some runs still in the pipeline — re-running the same command reconciles and continues safely from the checkpoint.
6. Summarize: submitted / committed / failed / still in the pipeline, and remind the user that a re-run retries only what's missing. When migrating both sources, summarize each.

Options to surface when relevant

• --limit N --execute — a small smoke run before committing to a full migration.
• --repos-dir DIR — extra directory to search for project repositories (repeatable). Rarely needed: project directories are found through Claude Code's own session registry, which records every directory the user worked in regardless of layout.
• --rollback — deletes every memory the migration created (via the server's per-run manifests, so organically stored memories are untouchable) and resets the checkpoint. Destructive: treat like --execute, explicit confirmation first.
• --source NAME / --db PATH — other adapters or a non-default store location.

If asked about timestamps: memories carry their original dates as extraction context, so the memory content reflects when things happened — but the created_at shown by search is always the ingestion time; that's a server-side limit.