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/staple/麻辣减脂荞麦面.md

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+# How to Make Spicy Low-Fat Buckwheat Noodles
+
+Making spicy low-fat buckwheat noodles is very simple and requires no cooking skills.
+
+Each serving contains 298 kcal, offering a combination of deliciousness, affordability, and fat loss, ready in just 20 minutes.
+
+Estimated Cooking Difficulty: ★★
+
+## Essential Ingredients and Tools
+
+* Seasonings: Hot pot soup base, peanut butter, whole milk, light soy sauce, chili oil, vinegar, Sichuan peppercorn oil
+* Ingredients: Semi-dry buckwheat noodles, baby cabbage, lettuce
+* Vegetable washing basin, small pot with a diameter of 18cm
+
+> Recommended purchasing plan:
+> Buckwheat noodles: Buy Shishanghui buckwheat noodles on PDD, 400g per pack, priced at 4.9 yuan, enough for 4 servings
+> Hot pot soup base: Longkan traditional clear oil hot pot soup base from Taobao tastes best, 29.8 yuan per pack, enough for 20 servings
+> Peanut butter: Yingge peanut butter on PDD, 24.8 yuan for two bottles, enough for 68 servings
+> Sichuan peppercorn oil: Wufeng Lihong Sichuan peppercorn oil on PDD, 400ml, 32 yuan for two bottles, enough for 80 servings
+> Others: Any brand works; it won't affect the taste
+
+## Calculations
+
+Per serving:
+
+- Semi-dry buckwheat noodles 100g
+- Baby cabbage 8 leaves (total 150g)
+- Lettuce 6 leaves (total 80g)
+- Hot pot soup base 25g
+- Peanut butter 15g
+- Whole milk 150ml
+- Light soy sauce 6ml
+- Chili oil 10ml
+- Vinegar 20ml
+- Sichuan peppercorn oil 10ml
+- Water 500ml
+
+## Instructions
+
+- Wash the baby cabbage and lettuce, set aside
+- Pour 500ml of water into the pot, turn on high heat, add the buckwheat noodles and baby cabbage, and wait for the water to boil
+- Once boiling, reduce to low heat, add the hot pot soup base, peanut butter, milk, light soy sauce, and chili oil. After the water boils again, cook for 5 minutes
+- Add the lettuce and cook for another 2 minutes
+- Add vinegar and Sichuan peppercorn oil, turn off the heat, and eat directly from the pot
+
+## Additional Notes
+
+* Be sure to choose semi-dry buckwheat noodles for the best texture
+* You can freely add other ingredients, such as hot pot meatballs or egg dumplings
+* Hot pot soup base, peanut butter, and milk are essential; they are the three major flavor components
+* If you cannot tolerate sourness, you can omit the vinegar
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.