Repomon v0.10.1

A fixes-only release. It ships two contributions from @isamu and the correctness work that came out
of reviewing them.

Contributed

• A repository can describe itself. Ship a repo.json at the root and Repomon adopts it when the
  repo is added: the declared name fills the display label when nobody on this machine has set one,
  and the declared colour becomes a pane-accent token, so a project keeps its stripe on every
  machine. Its identity name is never touched, because notes directories, MCP lookups and worktree
  paths derive from it.
• Japanese, Chinese and Korean input works in the composer. The Enter that confirms an IME
  candidate no longer sends the message half-converted. WebKit fires compositionend before that
  keydown, so isComposing is already false, and Tauri on macOS is WebKit.

Fixed

• A repo.json read for one repository could be written onto another. repos.id has no
  AUTOINCREMENT, so SQLite reuses a deleted row's id; the application is now bound to the
  registration it was read for, in one transaction that returns the authoritative row.
• Renaming a project back to its folder name is a choice, and the next add no longer undoes it.
• A declared name carrying bidi controls, zero-width characters or line separators is refused. Those
  reach aria-labels, tooltips and notifications, and the length cap did not touch them.
• A declared colour now reaches panes that are already open, instead of waiting for a remount.
• Confirming a Japanese filename in the editor's New File or Rename no longer creates the file
  half-converted.
• IME confirmation is detected per event rather than on a timer, so composing in one field can no
  longer suppress Enter on an unrelated button, and a lost compositionend can no longer leave
  every Enter dead until reload.

Known

• Two repo.json applications whose file reads finish out of order can still write oldest-last.
• An unparseable repo.json preserves what is stored and says so in the log; a parseable one
  declaring an unusable colour is a declaration of no colour, and clears the accent.
• A label set by rename has no route back to the declared name yet.