What changed.

One file, one fence.

Added

• · A fence around any folder: AES-256-GCM at rest, key derived from your password and never stored.
• · Notes and arbitrary files, held as sealed items.
• · Rooms — nestable, and themselves sealed.
• · The grey island: everything sealed at rest; one item opens into colour at a time.
• · Idle auto-lock, without losing your work.
• · Optional, opt-in "remember this fence on this device" — stores only a pointer, never your password.
• · A sealed index that can be rebuilt from the items themselves.
• · File-size padding, so the length of your small things doesn't leak.
• · Content binding, so no sealed item can be silently swapped for another.
• · Zero network activity, enforced by browser Content-Security-Policy.
• · Two typefaces embedded directly in the file — not even fonts are fetched.