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/drink/菠萝咖啡特调/菠萝咖啡特调.md

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+# How to Make Pineapple Coffee Special Drink
+
+![Example Dish](./pineapple-coffee-special-drink.png)
+
+The pineapple coffee special drink is a beverage very suitable for home preparation, with a sweet and sour taste.
+
+Estimated cooking difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Coffee liquid (Espresso or cold brew recommended)
+- Pineapple juice (Freshly squeezed or NFC)
+- Ice cubes
+- Soda water
+- Cream
+- Milk
+- Sugar
+- Sea salt (optional)
+- Rum (optional)
+
+## Calculation
+
+Before each preparation, determine how many servings to make. One serving is exactly enough for 1 person.
+
+Per serving:
+
+- Coffee liquid 30ml
+- Pineapple juice 60ml
+- Ice cubes 50g
+- Soda water 30ml
+- Cream 30ml
+- Milk 10ml
+- Sugar 8g
+- Sea salt 0.5g
+- Rum 5ml
+
+## Instructions
+
+- Add ice cubes, coffee liquid, pineapple juice, and soda water to the cup in order.
+- Whip the cream with sugar until it reaches a soft peak, then add rum and milk, mixing evenly until it becomes fluid.
+- Pour the whipped cream over the mixed liquid in the cup.
+- Sprinkle sea salt on top of the cream.
+
+## Additional Notes
+
+- For the coffee liquid, a floral or fruity flavor is recommended. For espresso, medium roast beans can be used; for cold brew, regular washed or natural process beans are suitable.
+- When pouring the cream, keep the height as low as possible to allow the cream to float evenly on the surface of the drink, forming a creamy layer.
+- Using fresh coffee liquid and pineapple juice can significantly enhance the overall flavor and texture.
+
+If you find any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.