Add English translations for all 379 recipe and tip files

Use dotlang AI translation (aiursoft-instruct:latest via Ollama) to
translate all Chinese content to English under en/ subfolder:
- en/dishes/: all recipe categories (aquatic, breakfast, condiment,
  dessert, drink, meat_dish, semi-finished, soup, staple, vegetable_dish)
- en/tips/: learn/ and advanced/ cooking guides
- en/README.md, en/CONTRIBUTING.md, en/CODE_OF_CONDUCT.md

The mkdocs-static-i18n plugin (docs_structure: folder) serves Chinese
at the root and English at /en/, with a language switcher in the UI.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

en/dishes/breakfast/牛奶燕麦.md

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+# How to Make Milk Oatmeal
+
+High in protein, rich in coarse grain fiber, a quick and nutritious breakfast for busy people with a feeling of fullness, ready in 3 minutes
+
+Estimated Cooking Difficulty: ★
+
+## Essential Ingredients and Tools
+
+- Milk (Pasteurized milk tastes better)
+- Oats
+- Eggs
+
+## Measurements
+
+- 🥛 Milk 280ml per serving
+- 🍳 Egg 1 per serving
+- 🍚 Oats 40g per serving
+
+Using the above conditions, calculate the ratio of raw materials to be used.
+
+## Instructions
+
+### Standard Oatmeal Cooking Method
+
+- Pour the milk into a breakfast cup (cold is fine)
+- Prepare 200ml of water. If using drinking water, add it directly to the oats; otherwise, boil it first before adding the oats
+- After the water boils, cook the oats for 2 minutes
+- Remove the cooked oats and pour them into the milk (try not to pour the oat-cooking water into the milk, as it affects the texture)
+
+### Quick Oatmeal Cooking Method
+
+- Replace regular oats with quick-cooking oats
+- Pour the milk into a container with the quick-cooking oats and stir
+- Place the mixture in the microwave
+- Microwave on medium power for 4 minutes
+
+### Fried Egg Cooking Method
+
+- Heat a pan, add a thin layer of oil. Once the oil is hot, fry the eggs, cooking each side for 20 seconds. Consider adding base seasoning (3g of pepper salt, optional)
+- Turn off the heat and plate the dish
+
+Basic cooking takes about 3 minutes. The finished dish is at room temperature and easy to eat, usually consumed within 2 minutes.
+
+> 🥑 Pairs well with fruits, vegetables, and soda crackers
+
+## Additional Notes
+
+- Since microwave power varies, the exact microwave power setting cannot be specified precisely
+- It is not recommended to fill the container more than 50% full with the mixture, as the contents are likely to overflow during heating
+- It is not recommended to use glass cups for cooking, for the same reason as above
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.