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/水煮牛肉/水煮牛肉.md

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+# How to Make Boiled Beef in Chili Sauce
+
+![shuizhuniurou](./sznr1.jpg)
+
+Spicy and Fragrant
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Beef
+- Bean Sprouts
+- Eggs
+- Cilantro
+- Doubanjiang (Fermented Broad Bean Paste)
+- Cooking Wine
+- Starch
+- Dried Chili Powder
+- Ginger
+- Garlic
+- Red Chili Peppers
+- Oyster Sauce
+
+## Calculation
+
+Before each preparation, determine how many servings you wish to make. One serving is sufficient for 2 people.
+
+For one serving:
+
+- Beef: 300g
+- Bean Sprouts: 100g
+- Eggs: 1
+- Cilantro: 5 sprigs
+- Doubanjiang: 10g
+- Cooking Wine: 10ml
+- Starch: 15g
+- Dried Chili Powder: 5g
+- Ginger: 20g
+- Garlic: 3 cloves
+- Red Chili Peppers: 1
+- Oyster Sauce: 8g
+
+## Instructions
+
+- Wash the beef and slice it.
+
+![shuizhuniurou](./sznr2.jpg)
+
+- Add 15g of shredded ginger, 1 egg, 15g of starch, 8g of oyster sauce, and 10ml of cooking wine. Mix well and marinate for 15 minutes.
+
+![shuizhuniurou](./sznr3.jpg)
+
+- Wash the cilantro and prepare it.
+
+![shuizhuniurou](./sznr4.jpg)
+
+- Heat oil in a wok, add the doubanjiang, 5g of shredded ginger, and garlic slices.
+
+![shuizhuniurou](./sznr5.jpg)
+
+- Pour in boiling water and cook until a red broth forms.
+
+![shuizhuniurou](./sznr6.jpg)
+
+- Wash the bean sprouts and remove the roots, then blanch them in boiling water until cooked.
+
+![shuizhuniurou](./sznr7.jpg)
+
+- Line the bottom of a bowl with the blanched bean sprouts.
+
+![shuizhuniurou](./sznr8.jpg)
+
+- Place the beef slices one by one into the red broth. Once cooked, remove them.
+
+![shuizhuniurou](./sznr9.jpg)
+
+- Arrange the cooked beef over the bean sprouts and sprinkle with cilantro stems.
+
+![shuizhuniurou](./sznr10.jpg)
+
+- Sprinkle with cilantro leaves, chili powder, and chili rings.
+
+![shuizhuniurou](./sznr11.jpg)
+
+- Heat oil in a separate pan until hot, then pour the hot oil over the dish to finish.
+
+![shuizhuniurou](./sznr12.jpg)
+
+## Additional Content
+
+- Reference: [Detailed Steps for Boiled Beef in Chili Sauce](https://www.zhms.cn/recipe/blrqm.html?source=2)
+
+If you encounter any issues or have suggestions for improving the process outlined in this guide, please submit an Issue or Pull Request.