- Refactor `getCaretCoordinates`with scaled coordinate mapping to support ComfyUI canvas zoom/pan.
- Overhaul autocomplete selection logic to default to no selection (-1), allowing Enter for newlines.
- Decouple hover visuals from active selection to prevent accidental mouse-based confirms.
- Implement horizontally-expanding popup layout to prevent text cutoff on long tags/aliases.
- Improve selection aesthetics with modern blue accent bars and high-contrast highlights.
- Fix token boundary marker drift using zero-width containers and robust CSS property mirroring.
- Unify backend tag database defaults in `autocomplete.py` to ensure user settings take effect.
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