Follow-up to #298. Restores editor states (editorValue, editorModelCto, editorAgreementData) to fix undo/redo functionality broken by the share feature merge.

[teja-pola]

Closes #

This pull request restores the undo/redo functionality that was broken after merging PR #298 (share functionality). It reintroduces editor states (editorValue, editorModelCto, editorAgreementData) to store.ts and updates useUndoRedo and editor components to ensure changes reflect in the preview (agreementHtml) and errors clear appropriately on undo/redo.

Changes

• Reintroduced editorValue, editorModelCto, and editorAgreementData to store.ts with corresponding setters (setEditorValue, etc.) to manage unsaved editor content and support undo/redo history.
• Updated useUndoRedo.tsx to include an onSync callback, calling main setters (setTemplateMarkdown, setModelCto, setData) after setValue, undo, or redo to sync editor states with main states and trigger preview rebuild.
• Modified AgreementData.tsx, TemplateMarkdown.tsx, and TemplateModel.tsx to use both editor setters (e.g., setEditorAgreementData) and main setters (e.g., setData) via useUndoRedo, ensuring preview updates and error clearing on undo/redo.

Flags

• - This reverts the simplification from PR fix(button): share functionality fixing for collaborative editing - I297 #298 (removal of editor states) to restore undo/redo, potentially reintroducing sync complexity for shared links. However, generateShareableLink still uses main states (templateMarkdown, etc.), so share functionality remains intact.

Screenshots or Video

Related Issues

• Issue Share Functionality Fails: 403 Error on Live Site & Partial Render on Localhost Blocking Collaborative Editing #297
• Pull Request fix(button): share functionality fixing for collaborative editing - I297 #298

Author Checklist

• Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit.
• Vital features and changes captured in unit and/or integration tests
• Commits messages follow AP format
• Extend the documentation, if necessary
• Merging to main from fork:branchname

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