v0.9.83

## Summary

- **Gate messaging on the hashchain** — MLS-encrypted gate rooms, `gate_message` events on private Infonet chains, swarm push/pull replication; only gate members decrypt
- **DM protocols live** — short wormhole address (out-of-band), contact request/approve flow, ratchet-encrypted DMs over Tor/wormhole; fleet-tested across onion participants
- **Infonet transport hardening** — Tor/SOCKS readiness fixes, terminal session teardown on exit, clearer node status vs stale ARTI WARMING / sync backoff
- **v0.9.83 UI** — version decal and what's-new modal covering Infonet gate + DM release notes

## Upgrade paths

| Install type | Path to v0.9.83 |
|---|---|
| **Desktop v0.9.82+** | One-click **Update** (signed Tauri `latest.json` + minisign) |
| **ZIP / source updater** | Auto-update via `SHA256SUMS.txt` integrity chain |
| **Desktop v0.9.81** | One manual MSI install to v0.9.82 first if needed, then one-click to v0.9.83 |
| **Desktop v0.9.79 / v0.9.8** | Manual MSI hop to v0.9.81+ first (signing key reset at v0.9.81), then auto-update |

## Artifacts

| Asset | SHA-256 |
|---|---|
| `ShadowBroker_v0.9.83.zip` | `53f56631731ad3cdc7be68df09bedd6570ed91ecda6fa57c39651098e15666c7` |
| `ShadowBroker_0.9.83_x64-setup.exe` | `d62170af4b9df0b190832b7bb3ad6bfe8a7ac01472f2c7b39cf2a1b61edc7492` |
| `ShadowBroker_0.9.83_x64_en-US.msi` | `b664cc0003a29f7ce88b04c2b425643dbe7ed897342fc6e9a2378bc1910c6850` |

Digests are also pinned in `backend/data/release_digests.json` for bundled updater verification.

## Third-party attribution

OSIRIS (MIT, [simplifaisoul/osiris](https://github.com/simplifaisoul/osiris)) — recon stack adapted for ShadowBroker; see `backend/third_party/osiris/NOTICE.md`.

privacy-core (MLS) — Rust gate crypto via WASM/FFI for browser and Tauri sovereign shells.