#155 · Wire MinIO + PeerTube + ClamAV auto-archive into SimpleX !save

Context

SimpleX !save/!archive extracts and dedups URLs but does not upload files to MinIO, mirror videos to PeerTube, or virus-scan attachments. MinIO/PeerTube/Shlink are already in compose.yml, just unwired.

Acceptance criteria

• [ ] !save <url> of a file uploads to MinIO and returns a presigned link (dual-client: internal endpoint for ops, public endpoint for signed URLs).
• [ ] !save <url> of a video archives to PeerTube when isPeertubeConfigured().
• [ ] Received attachments are ClamAV-scanned before any upload; infected files are rejected with a clear message.
• [ ] Every integration gated by its is*Configured() guard; clean featureDisabled() fallback when off.
• [ ] Long URLs auto-shorten via Shlink when isShortlinkConfigured() (fallback to long URL).

Technical hints

• Signal reference: !save/!archive + handleVirusScan in signal-messenger/src/src/bot/command-handler.ts; auto-scan/archive in signal-bot-v2.ts.
• SimpleX target: simplex/src/src/bot/commands/utility/save.command.ts + src/src/utils/attachment-utils.ts.
• Reuse the MinIO/PeerTube/Shlink/ClamAV clients in packages/shared-utils/src/bot-utils/.
• Dual-client MinIO trap: generate presigned URLs against the public endpoint or signatures mismatch.

--- Submit a merge request that says Closes #<this issue iid> in the description. On merge to main, the GitLab webhook auto-awards feature_bounty_<tier> + the standard merge_pr (40 pts) to your scoreboard account. Your commit email must match your Authentik email. Backlog context: docs/simplex-parity-bounties.md.