- Update version to 2026.11.0001 (YYYY/MM.#### development format)
- Add NovelWriter attribution: UmbraEdit is based on novelWrite 2026.02
by Veronica Berglyd Olsen (novelWriter.io), GPL v3.0
- Update CHANGELOG.md with new version format and development entry
- Add B.D. Murphy to CREDITS.md and credits_en.htm
- Update all copyright headers to use 'novelWriter contributors' format
- Add B.D. Murphy copyright to new files (fromdocx.py, SVGs, docs)
- Tag release 2026.11 and development 2026.11.0001
- Update version to 1.0.0, date to 2026-11-05, hexversion to 0x01000000
- Create new Umbra-branded splash screen (book + audio wave motif)
- Create new Umbra-branded app icon (umbraedit.png)
- Update guimain.py to load umbraedit.png icon with svg fallback
- Update CHANGELOG.md with UmbraEdit 1.0.0 release notes
- All code compiles, no remaining novelWriter references in Python