- Remove Edit button from header, add pencil icons next to editable fields
- Add inline editing for Version, Author, and Comment metadata fields
- Implement save options modal with overwrite/save-as-new functionality
- Add file dialog integration for save-as-new option
- Fix backend MANIFEST_FILENAME error by using correct string literals
- Add CSS styling for editable fields and save options modal
- Clean up debug logging code
BREAKING CHANGE: Edit button removed from UI in favor of inline editing
Fix handleValidateBundle to work with refactored core functions that
return validation data directly instead of nested under result.data.
Improve modal message to show actual error/warning counts.
Remove redundant action buttons from overview tab, keeping only the
header buttons (Edit, Sign, Validate, Fill, Clear) to eliminate
duplicate functionality and clean up the UI.
