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/meat_dish/麻婆豆腐/麻婆豆腐.md

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+# How to Make Mapo Tofu
+
+![Finished Dish](./1.jpeg)
+
+This dish is inspired by Mapo Tofu. It is rich in various essential trace elements for the human body, such as iron, calcium, phosphorus, and magnesium. Most importantly, it goes perfectly with rice!
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Silken tofu (Qingmei brand recommended)
+- Fruit knife
+- Salted duck eggs (Liufu Duck brand recommended; this is the soul of the dish)
+- Pork belly (ground pork from the supermarket is also acceptable)
+- Garlic
+- Ginger
+- Millet peppers (optional if you don't like spicy food)
+- Spicy chili sauce (Guangle brand recommended)
+- Sichuan peppercorns
+- Salt
+- Soy sauce (Wei Jixian soy sauce)
+
+## Ingredients List
+
+- 1 box of silken tofu
+- 1 salted duck egg
+- 20-30g of pork belly
+- 2 cloves of garlic
+- 2 slices of ginger
+- 5 millet peppers
+- 5g of garlic chili sauce
+- 20 Sichuan peppercorns
+- 3g of salt
+- 10g of soy sauce
+
+## Instructions
+
+- Mince the garlic and ginger, and set aside.
+- Slice the millet peppers into rings, and set aside.
+- Mince the pork belly (skip this step if you bought ground pork).
+- Add half of the salt and Wei Jixian soy sauce to the ground pork, mix well, and set aside.
+- Cut the salted duck egg in half vertically with a kitchen knife (be careful). Remove the yolk (it is crucial to remove it to avoid a fishy taste). Crush the remaining egg white into approximately 2 mm x 2 mm pieces. It doesn't need to be too fine. Set aside.
+- Open the tofu packaging. Use a fruit knife to cut the tofu in the box into pieces approximately 2.5 cm x 3 cm in size. Set aside.
+- Heat a wok and add 10ml - 15ml of cooking oil. Wait for 10 seconds to let the oil temperature rise.
+- Reduce heat to low. Add the garlic, ginger, pepper rings, Sichuan peppercorns, salted duck egg whites, and garlic chili sauce. Stir-fry for 20 seconds until fragrant.
+- Increase heat to medium. Add the ground pork and stir-fry for about 1 minute until the meat changes color.
+- Reduce heat to low. Add the tofu. Sprinkle the remaining salt and Wei Jixian soy sauce evenly over the tofu.
+- Pour boiling water along the side of the wok (pouring directly on the tofu may cause it to break). The water should just cover the tofu.
+- Increase heat to high. Once the water boils, immediately reduce to medium heat and simmer for about 10 minutes.
+- When only 1/5 of the water remains and the tofu has absorbed the color, turn off the heat and serve.
+
+## Additional Notes
+
+- Pay close attention during the cooking process to prevent the food from burning.
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.