openplanr 2.6.2

Patch Changes

• Save complete authored diagram bundles with durable retries and recovery, render persisted geometry through a shared portable scene, and export immutable SVG, PNG and review HTML snapshots. Add explicit selected-layout previews and read-only legacy migration inspection without changing legacy sources.

• Add a portable diagram editor session with atomic gesture previews, conditional undo, indexed hit testing, bounded clipboard data and refresh recovery. A separate local owner transport saves complete authored bundles through the existing durable store without granting review sessions access to drafts. Editor controls and authoring CLI commands remain separate upcoming work.