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/红烧猪蹄/红烧猪蹄.md

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+# Braised Pig Trotters Recipe
+
+![Braised Pig Trotters](./红烧猪蹄.jpg)
+
+Braised pig trotters are rich in nutrients, flavorful, with a thick sauce that pairs perfectly with rice.
+
+Estimated Cooking Difficulty: ★★★★
+
+## Essential Ingredients and Tools
+
+- Pig trotters
+- Bay leaves
+- Ginger
+- Green onions
+- Dark soy sauce
+- Cinnamon bark
+- Rock sugar
+- Cooking wine
+- Light soy sauce
+- Salt
+- Star anise
+- Cooking oil
+
+## Measurements
+
+This recipe serves 3-4 people.
+
+- Pig trotters: 2~3 pieces
+- Cooking oil: 30ml
+- Bay leaves: 2 leaves
+- Ginger: 5 slices
+- Green onions: half a stalk
+- Cinnamon bark: 1 piece
+- Rock sugar: 7-8 pieces
+- Cooking wine: 30 ml
+- Light soy sauce: 20 ml
+- Dark soy sauce: 20 ml
+- Salt: 8 grams
+- Star anise: 4 pieces
+
+## Instructions
+
+### Preparation
+
+* Place the chopped pig trotters from the butcher into a pot of cold water. Add 20 ml of cooking wine, ginger, and green onions. Boil for 15 minutes to remove the gamey smell.
+* Heat a pan with cold oil. Pour in 30ml of cooking oil, add 7-8 pieces of rock sugar, and turn the heat to low. Melt the sugar until it turns into a caramel color, crushing the sugar pieces with a spatula. This takes about 2 minutes.
+* Once the caramel is ready, add the blanched pig trotters. Continue cooking on low heat, stirring until the trotters are lightly browned on both sides.
+* Add 2 bay leaves, 1 piece of cinnamon bark, 4 star anise, 20 ml of light soy sauce, 20 ml of dark soy sauce, 10 ml of cooking wine, 3 slices of ginger, and 8 grams of salt. Increase the heat to medium and stir-fry for 1 minute.
+* Add boiling or cold water, ensuring the liquid covers the trotters. Cover the pot, bring to a boil over high heat, then turn off the heat.
+* Transfer all ingredients into a pressure cooker. Cook under pressure for 15 minutes. (If you don't have a pressure cooker, you can simmer in a regular pot, starting on high heat and then reducing to low.)
+* After 15 minutes, pour the contents back into a wok. Turn the heat to high to reduce the sauce. Taste the sauce with chopsticks; if it's bland, add 2~3g of salt.
+* The time required to reduce the sauce depends on the amount of liquid in the pot. Usually, 30 seconds is sufficient. Leaving a bit more sauce is fine, as the braising sauce is also great with rice.
+
+## Additional Notes
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.