v0.13.0-beta.0

Delta since previous beta (v0.12.0-beta.16) — 6 new changesets.

Minor Changes

• Keep history and Save Version responsive on long-lived, agent-heavy projects.

  History stays fast no matter how long you have been working in a project, and
  the version timeline keeps loading quickly even after months of daily edits.

  Save Version now groups all of your recent changes — including changes made by
  AI agents — under the version you save, matching what you would expect from the
  button. Previously it only captured some of your recent activity.

  ok diagnose health can now spot a project whose history has started to slow
  down and explain what to do about it.

Patch Changes

• OK skill guidance now tells agents to reference images and other assets by a doc-relative path and never by a server URL. Previously an agent (notably in Codex) could embed an absolute http://localhost:<port>/… preview-server URL — which is machine- and session-specific and breaks portability, sharing, and the published docs render. The Media section now states the rule explicitly, covers the "reference an asset already in the tree" case, and clarifies that preview_url's URL navigates the preview and must never be pasted into an image embed.

• Fix the FILES sidebar showing "Documents response did not match expected shape." when a documents refresh is superseded during a long initial load of a large project. A refresh aborted mid-response now propagates as a cancellation instead of being mistaken for a malformed server payload, so the sidebar keeps its loading state (or the previous tree) until a completed refresh arrives.

• Show All Files sidebar overhaul. The recursive listing walk now emits in level order, so hitting the entry cap drops the deepest entries first instead of arbitrarily starving top-level items behind one huge subtree. The sidebar no longer walks the whole tree up front in Show All mode: it seeds the root level lazily, fetches each folder's children on expand, and revalidates only the root plus currently-expanded folders when files change externally. The truncation and listing-error notices now render as contained, localized alert rows, and the truncation copy is truthful: it shows a locale-formatted count and explains that deeply nested files are hidden (the previous copy claimed search could find them, which it cannot — show-all-only files are not in the search index).

• Keep the desktop editor editable after creating and inline-renaming successive sidebar files in packaged builds. The editor now repairs a stale TipTap EditorContent portal attachment after rename churn and avoids clearing the freshly reopened destination provider during active renames.

• Add a native right-click context menu in the OK Desktop editor (macOS). Right-clicking editable text now opens a native menu with Cut/Copy/Paste/Select All, and right-clicking a misspelled word adds spelling suggestions, "Add to Dictionary" (written to the macOS system dictionary), "Disable Spell Check", "Look Up", and "Search with Google" — matching the affordance every other Mac app offers. Spell check can be turned back on right from the editor ("Enable Spell Check" on any editable right-click) or from the new Edit ▸ "Check Spelling While Typing" menu item, and the on/off choice persists across relaunches. Previously, right-clicking a misspelled word did nothing.