Save AI-scanned meal photos to meal history

Currently, when I use the AI food scanner, the photo is used only for recognition and then discarded. I'd like the option to attach that same photo to the logged meal entry (breakfast, lunch, dinner, or snack). Current behaviour does not allow this, so I have to take a photo to scan first, and then take another photo to attach it to the daily meal entry. I'd like to have this easier.

Why it would be useful:
- Share with nutritionist
- Browsing meal history becomes visual, not just text-based.
- Easier to recall portion sizes and what a meal actually looked like.
- Helpful for spotting patterns (e.g. "what did my breakfasts look like last month?").
- No extra effort for the user, the photo is already taken.