v1.11.0

A space that never syncs can now be carried by a relay and mirrors tell you
honestly when the owner is gone. Plus a large batch of fixes to overall reliability,
sync safety, dialogs and the log.

Highlights

• Connect through a relay when the network blocks a direct link. Some
  networks — office Wi-Fi, a hotel, a mobile carrier — keep two devices
  from reaching each other, and a space simply never syncs. Settings now
  takes one relay, added with a key or with an invite from whoever runs
  it, and tested the moment you add it. Your files stay encrypted end to
  end; the relay only forwards them. Anyone you share with who has no
  relay of their own uses yours.
• See who you are reaching through a relay. Network Status gains a
  Relay row and a section grouped by relay: the masked key, whether it is
  yours or the one that person brought, and the people being carried
  through it. The Activity Log records each of those connections as its
  own entry.
• A warning before mirroring a folder that will list short. The
  mirror preview now shows the file count and warns when the owner's
  folder exceeds the share limit, while still letting you confirm.
• A distinct "owner offline" status for mirrors. A mirror that cannot
  reach the owner's listing now shows an "owner offline" pill and a
  "waiting for owner" label instead of pretending to be synced or
  syncing.
• Diagnostics and Advanced details are screens of their own. Network
  status ended in a disclosure that appended six sections and 23 rows
  below the fold; both now sit in a Troubleshooting group and open
  properly.
• Network status and network settings link to each other, the way the
  Activity Log and its settings already did, so changing a limit or a
  relay no longer means backing out through two screens to see what it
  did.

Also fixed

• A local edit is never overwritten because of an unrelated manual
  download. A manual download of the same file could vouch for the
  mirrored copy, so an edit matching it was replaced with no conflicted
  copy.
• A restored or same-size replaced file is re-verified. Mirror
  verification trusted file age, so any restore that preserved
  timestamps passed as verified forever. Files are now fingerprinted.
• A pre-mount preview no longer claims a clean destination for a file
  it is about to download beside your own.
• Names with non-Latin characters are no longer dropped. Files and
  folders containing ł, Cyrillic, CJK or emoji could vanish from
  listings and scans.
• Files being prepared at the same time show as separate rows instead
  of collapsing into one row that claimed the others as co-sharers.
• Mirrors stop spinning against an offline or failing owner. No more
  endless "Preparing…" badges; a full volume or a deleted mount root is
  caught before fetching; a file whose holders keep failing its hash
  gets a bounded retry budget; an offline mirror still adopts what is
  already on disk instead of reporting "syncing" for the whole outage.
• A folder whose source disappears and returns clears "source missing"
  again. It could stay latched until you pressed Resume.
• Joining with a large avatar no longer stalls silently. Avatars over
  the frame budget are clamped before they ride in the join request.
• A denied joiner who knocks again is denied again. The deny could be
  lost in a race and the owner's banner kept resurfacing.
• Leaving a space forgets the peer's signer key. A stale key could
  seal membership grants the joiner could not open.
• A readmitted member is announced under their real name instead of
  "Unknown".
• Failed remove and leave dialogs recover. A rejected removal left
  the dialog stuck, and a failed leave navigated you away from a space
  you were still in.
• A failed space creation is reported instead of silently resetting
  the dialog.
• Every modal shares one Enter/Escape contract. Enter no longer
  double-submits or silently cancels, and destructive confirms rest on
  Cancel.
• Field errors are tied to their fields in Edit Space, Edit Folder
  and the path picker, so screen readers can find the explanation.
• Retried errors collapse into one banner instead of stacking
  identical toasts.
• Zoom from the View menu is remembered, and the Appearance zoom
  tiles mark the nearest preset instead of none.

Full Changelog: v1.10.1...v1.11.0