Problem: a project had nowhere to keep free text (to-dos, instructions
for whoever opens it next, frame numbers).
Fix: plain-text `Project::notes` (schema v15, no-op migration so older
builds refuse instead of dropping it), `project.notes` /
`project.setNotes {text, merge?}` engine commands (undoable, capped at
1 MiB; calls with one `merge` key share an undo step), and a
Window > Project Notes panel whose editor (`notes.text`) commits every
change, one typing session per undo step. Translations for es, ja,
zh-cn (and the panel title for pt-br, uk).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
110c1783c3