🚀 Major editor modernization release for GrapesJS DevFuture.
✅ Upgraded GrapesJS ecosystem to pinned stable versions.
✅ Migrated interactions to Vanilla JavaScript (removed jQuery dependency in app logic).
✅ Upgraded UI runtime to local Bootstrap 5.3.8 bundle.
✅ Improved sidebar/panel UX (Blocks, Styles, floating actions, search).
✅ Added ScribeJS RTE integration for richer in-canvas text editing.
✅ Added new Signature block (Extra) with AutographJS modal workflow:
✅ double-click to open editor for signature
✅ draw + undo/redo/clear for signature
✅ insert as PNG into canvas and Asset Manager for signature
✅ history behavior for replacing old signature with undo/redo recovery
✅ Updated documentation and release-oriented README improvements.