Shellby: SSH Client & Terminal

A round of stability and polish fixes. Keys & credentials • RSA private key import completed: classic PKCS#1 supported, public keys derived from the private key for real • Private keys are now always stored as OpenSSH PEM, fixing binary keys being corrupted by sync • New "re-push credentials to iCloud Keychain" in Settings, for when another device is missing them • Credentials carried over from older versions are normalised automatically — nothing for you to do Terminal • Fixed terminals filling only a corner of the window after reconnecting (vim, htop and other full-screen programs) • iPhone & iPad: you can now scroll back through history during continuous output such as tail -f • Steadier Mosh-compatible connections: fixed stalls caused by out-of-order packets being discarded as replays, and spurious "link interrupted" warnings on a perfectly healthy link • Mosh-compatible sessions keep no scrollback (a protocol limitation) — the first time you scroll up we explain why and what to use instead AI agent • Replies render as Markdown instead of showing raw ** and backticks • Approval cards stay fully readable: long commands and rationales scroll inside the card, and destructive commands get a "view full command" link — no more approving what you couldn't finish reading • Adding a follow-up task in the same conversation now regenerates the plan iPhone UI • The terminal's top bar now follows your terminal theme's light/dark, with the status bar and keyboard matching • SSH / Mosh-compatible badges on tabs are far easier to read Sync • Fixed duplicate host rows reappearing after being removed, via iCloud Keep the feedback coming!