Clarify or restore transitional media CLI commands in thin distribution

[100yenadmin]

TL;DR

In the current thin-distribution release, the OpenClaw GBrain plugin still exposes /plugins/gbrain/extract, but the old transitional core CLI commands gbrain import-media and gbrain ingest-media are no longer present. That may be intentional after moving media toward upstream-native primitives, but we should make the migration explicit so operators and agents do not call dead commands.

Evidence

During the eva-v0.42.56.5 local canary:

gbrain ingest-media --help
gbrain import-media --help

both returned:

Unknown command

The OpenClaw plugin route is installed and auth-gated, and OpenClaw agent tool-call access to GBrain search is working. This issue is specifically about the transitional media CLI surface.

Decision Needed

Choose one:

1. Restore a thin compatibility wrapper around upstream-native media import/extraction.
2. Remove stale docs/references and make /plugins/gbrain/extract plus upstream-native media commands the only supported path.

Acceptance Criteria

• Docs and agent guidance do not mention dead commands.
• If compatibility is restored, add CLI smoke coverage.
• If compatibility is intentionally dropped, add a migration note explaining the new media path.