improved README.md in Slovak and English,

added AGENTS.md for AI bot

README.md

@@ -1,3 +1,39 @@
 # Nutrio
 
-Jedalnicky pre ranajky, obedy, vecere, kde budem mat zoznam surovin a k nim bielkoviny, cukry, tuky, to mi spocita kalorie
+## Slovensky
+
+Nutrio je aplikacia na planovanie jedal a sledovanie vyzivovych hodnot.
+
+### Specifikacia
+
+- Backend je v PHP a frontend vo Vue.js.
+- Jeden jedalnicek predstavuje jednu cast dna: ranajky, obed alebo vecera.
+- Pre kazdu cast dna sa pridavaju suroviny.
+- Kazda surovina ma vyzivove hodnoty na 100 g:
+  - bielkoviny
+  - cukry
+  - tuky
+- Pri skladani jedalnicka sa vyberie surovina a zada sa hmotnost.
+- Aplikacia vypocita celkove hodnoty suroviny podla hmotnosti.
+- Aplikacia vypocita kalorie pre surovinu a nasledne ich zhrnie pre cely jedalnicek.
+- Neskor bude mozne v diari pre konkretny den vybrat, ktore jedalnicky boli pouzite pre ranajky, obed a veceru.
+- Aplikacia nasledne vypocita sucty za cely den.
+
+## English
+
+Nutrio is an application for meal planning and nutrition tracking.
+
+### Specification
+
+- The backend is built in PHP and the frontend in Vue.js.
+- One meal plan represents one part of the day: breakfast, lunch, or dinner.
+- Ingredients are added for each part of the day.
+- Each ingredient stores nutrition values per 100 g:
+  - protein
+  - sugar
+  - fat
+- While building a meal plan, the user selects an ingredient and enters its weight.
+- The application calculates total ingredient values based on the entered weight.
+- The application calculates calories for each ingredient and then sums them for the whole meal plan.
+- Later, in a daily diary, the user will select which meal plans were used for breakfast, lunch, and dinner on a specific day.
+- The application then calculates totals for the entire day.