ModelDeck 0.3.1 — honest states, one-click recovery

Fixed

• Deck cards now say "Sign in needed" instead of a bare stale age when an
  account's stored sign-in is missing or expired (issue #114): the daemon
  had been reporting signin-required per account all along, but the deck
  card only rendered the #89 "Data from N hr ago" line, with the real cause
  buried in a tooltip — on a multi-account deck this read as a silent
  refresh failure. The card now shows an actionable warning in the same
  visual family as the #98 Keychain notice, whose tooltip explains that
  Claude keeps only the ACTIVE account's sign-in fresh (CLI ≥ 2.1.216, issue
  #99) and points at Settings → Accounts to recover.
• Probe failures from the bundled daemon no longer masquerade as a daemon
  crash (issue #114): the SEA binary dispatched the Claude usage probe
  through the daemon entry point, so any probe error was recorded as
  "ModelDeck failed to start: …" in per-account refresh errors. Both launch
  modes now share one probe CLI wrapper and report
  "Claude usage probe failed: …" identically.