Add Mosh support for terminal connections

[danielaustralia1]

Summary

• Adds opt-in Mosh support for the terminal tab, keeping it alive through network changes, IP roaming, and sleep/wake
• All other features (files, sessions, skills, discovery) continue to use SSH — Mosh is terminal-only
• Toggle lives in the connection editor under a new Terminal panel; shows a Homebrew install hint if mosh isn't found on the Mac
• Connections without Mosh enabled behave exactly as before

Use case

Connecting to a home PC running inference from a laptop that moves between networks. SSH terminal sessions drop on every network change; Mosh reconnects transparently.

Changes

File	Change
Models/ConnectionProfile.swift	prefersMosh: Bool = false — optional, backward-compatible JSON decode
Utilities/MoshSupport.swift	New — detects mosh binary at Homebrew paths and via which
Services/SSH/SSHTransport.swift	moshArguments(for:) — builds mosh [--ssh=ssh -p N] user@host
Services/Terminal/TerminalSession.swift	Selects executable + args at init based on prefersMosh and availability
Services/Terminal/TerminalViewHost.swift	Uses session.executablePath / session.terminalArguments instead of hardcoded /usr/bin/ssh
Views/Connections/ConnectionEditorSheet.swift	Terminal panel with Mosh toggle; disabled with install hint when mosh not found

Requirements

• mosh must be installed on the Mac (brew install mosh)
• mosh-server must be installed on the remote host (apt install mosh / brew install mosh)
• SSH key auth must already work (Mosh uses SSH to bootstrap)

🤖 Generated with Claude Code

[dodo-reach]

I’m going to hold off on merging it for now, mostly for product-direction reasons rather than because the idea is bad. Hermes Desktop is intentionally built around a single direct SSH connection model, and I want to be careful about adding a second transport story just for the terminal while everything else remains SSH-based.

That keeps the app simpler to reason about, document, and support.

So I’d like to leave this open while I think more about whether Mosh belongs in the product at all.