* perf(canvas): find guide owners from an index instead of walking the page
Drawing and hit-testing guides visited every layer of the page on each frame to find the few that carry guides; on a large page that took about 1.2s of a load's rendering. The graph now keeps the set of layers with guides current from its node events, and both read it.
* perf(layout): write only changed geometry and request one render per layout pass
Layout wrote every laid-out layer's geometry whether or not it changed, so each pass over a large page notified every graph listener for every layer; a page load spent about 1s handling those updates. Layout now writes only the fields that changed, and the updates a layout pass makes ask for a single render, queued for before the next frame, instead of bumping the editor's reactive versions once per layer.
* test(canvas): drop the graph double the guide tests no longer use
* perf(fig): copy an opened file once on the main thread instead of three times
Opening a .fig in the browser copied the file for a main-thread fallback the caller's buffer already served, then copied it twice more for the worker, which parses from one and keeps the other as the original archive. A 109MB file briefly took over 400MB on the main thread. The fallback now reuses the caller's buffer, and the worker receives one copy and makes its archive copy itself.
* docs(changelog): note faster large-page loads
* fix(app): run recovery and autosave after edits, not redraws
Recovery and autosave watched sceneVersion, a render counter that every
requestRender bumps: opening a file, layout passes, fonts, and each layer a
page loads. Safari has no File System Access API, so its opened files have
no writable source and always get recovery snapshots. Loading a page also
invalidated the original archive, so a snapshot encoded the whole document
again; on the Preline UI kit's CMS page that ran about 100 s on the main
thread in WebKit before failing.
Recovery, autosave, and saved versions now follow the content revision of
createDocumentChanges. A page's layers loading from the opened file, which
runs inside applyImportedStateDuring on both the worker and main-thread
paths, no longer counts as an edit for that revision or for the original
archive, and asks for one render rather than one per layer.
In WebKit the CMS page switch drops from 105-133 s to 21 s, and its longest
main-thread stall from 90-117 s to 1.4 s.
* refactor(app): stop storing a version with recovery snapshots
Adopting a snapshot now protects the document's current content revision,
so nothing reads the version a snapshot was taken at. Snapshots saved by
earlier versions carry a sceneVersion field instead; dropping the field
keeps the metadata type true for both. Tests tell snapshots apart by the
bytes they were built with.
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