The uninstall and update scripts called header_red() and referenced color
variables (GREEN/RED/RESET) that were never defined, so running them printed
"header_red: command not found" instead of the section banners. Also corrects
the update script's success message (it said "installation completed" and
pointed at an undefined ${nomad_dir} path) and fixes two spelling typos.
- uninstall_nomad.sh: add Color Codes block + header_red()
- update_nomad.sh: add header_red(); fix success wording and start_nomad.sh path
- CONTRIBUTING.md, admin/constants/ollama.ts: spelling fixes
Reported by @fix2015 in #1058; reimplemented in-house.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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