Local folders are picked read-only, so create/edit/rename/delete were
either disabled or would fail. Now offline mode supports the same CRUD as
server mode, bounded only by what the filesystem grants:
- upload.js: ensureWritable() escalates the picked root to readwrite via
the FS-Access permission prompt on the first mutation (one prompt, then
granted for the session; requires the user gesture every caller has).
makeDir/makeFile gain FS-API branches (getDirectoryHandle/getFileHandle
{create:true} + createWritable) resolved through handleForDir; removeNode
and renameNode (already FS-API) now escalate first.
- preview-markdown.js: the markdown editor's save escalates before
createWritable, so editing a local .md persists.
- events.js: New folder / New markdown file menu items are enabled whenever
there's a writable target (server, or a picked local folder) via
canCreateHere(); rename/delete were already gated by canMutate (FS-API).
The aggregator party-picker stays server-only.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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