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/soup/西红柿鸡蛋汤.md

@@ -0,0 +1,38 @@
+# How to Make Tomato and Egg Soup
+
+Estimated Cooking Difficulty: ★★
+
+## Essential Ingredients and Tools
+
+- Tomatoes
+- Eggs
+- Sesame oil
+- MSG (optional)
+- Salt
+- Green onions, ginger, garlic
+
+## Ingredients
+
+- 1 tomato
+- 1–2 eggs (adjust to taste; use 2 if you prefer more egg, or 1 for a standard portion)
+- 2 drops of sesame oil
+- 5 grams of MSG (optional)
+- 15 grams of salt
+- 15 grams of green onions, ginger, and garlic combined
+
+## Instructions
+
+1. Wash the tomato and cut it into chunks.
+2. Finely chop the green onions, ginger, and garlic.
+3. Crack the eggs into a bowl and whisk thoroughly with chopsticks (or an egg beater).
+4. Heat a pan and add 15 ml of oil. When you see a wisp of smoke rising from the oil, add the chopped green onions, ginger, and garlic, and stir-fry for 30 seconds.
+5. Add the tomato chunks and stir-fry for 1 minute.
+6. Pour in water until the liquid level is approximately 1.2 times the height of the ingredients in the pot, and add the salt.
+7. Once the soup comes to a boil, slowly pour in the beaten eggs while stirring with chopsticks to create egg ribbons. Add the MSG and sesame oil.
+8. Wait for 30 seconds, then turn off the heat and serve.
+
+## Additional Notes
+
+MSG is optional.
+
+If you encounter any issues or have suggestions for improving this guide while following these steps, please submit an Issue or Pull Request.