Three root causes identified and fixed:
1. JS semantics bug: `activeNoteContent ?? allContent[path]` used nullish
coalescing (`??`) which does NOT fall through on empty string ''. When
handleEditorChange temporarily overwrites tab.content with frontmatter-
only content during async content swaps, activeNoteContent becomes ''
and the fallback to allContent never triggers. Fix: change `??` to `||`.
2. Defence-in-depth: when body is still empty after fallback (Tauri mode
where allContent is {}), but wordCount > 0, the body field now includes
an explicit get_note instruction instead of being empty. This is more
reliable than the preamble instruction that Claude may skip.
3. Rust strip_frontmatter used `rest.find("---")` which matches `---`
anywhere in text (including inside frontmatter values like `title:
foo---bar`). Fixed to use `rest.find("\n---")` for line-boundary
matching. This ensures accurate wordCount for the fallback heuristic.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2249c4a450