1.0.3

Fixed

• Setting or editing a variable no longer overwrites frontmatter when the existing frontmatter is invalid YAML or has an unclosed block. These cases now stop with a clear error notice and leave the document untouched.
• Setting or editing a variable rewrites only the frontmatter block instead of the whole document, preserving scroll position and producing a single clean undo step.
• Highlight colors are validated as #RRGGBB before use; invalid values fall back to the theme default instead of leaking into editor styles.
• Settings saves that fail (for example, a disk error) are now caught and reported instead of surfacing as an unhandled promise rejection.

Changed

• Editor variable highlighting scans only the visible portion of the document and caches the parsed frontmatter, greatly reducing per-keystroke work in large notes. Highlighting is no longer disabled on documents over 1 MB.
• "Replace all in document" and "Replace in document and filename" apply targeted edits in a single transaction instead of rewriting the entire document, preserving cursor and scroll position. Documents over 1 MB report an explicit error instead of silently doing nothing.

Installation: copy main.js, manifest.json, and styles.css into <vault>/.obsidian/plugins/tidemark/, then reload Obsidian.