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/牛油果拉西.md

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+# How to Make Avocado Lassi
+
+Avocado Lassi is a healthy drink that combines the traditional Indian yogurt beverage "Lassi" with creamy avocado, offering a smooth and sweet taste, making it perfect for breakfast or afternoon tea.
+
+Estimated Cooking Difficulty: ★
+
+## Essential Ingredients and Tools
+
+- Plain yogurt
+- Ripe avocado
+- Honey
+- Cold milk
+- Cardamom powder (optional)
+- Mint leaves or crushed nuts (optional, for garnish)
+- Blender (high-speed blender/juicer)
+
+## Calculation
+
+Determine how many servings you want to make before each preparation. One serving is exactly enough for one person.
+
+Per serving:
+
+- 120 ml of plain yogurt
+- 1 ripe avocado
+- 1 tablespoon of honey (adjust to taste)
+- 60 ml of cold milk
+- A pinch of cardamom powder (optional)
+
+## Instructions
+
+- Cut the avocado in half, remove the pit, peel off the skin, and dice the flesh into small pieces.
+- Add 120 ml of plain yogurt, the diced avocado, 1 tablespoon of honey, and 60 ml of cold milk to the blender.
+- (Optional) Add a pinch of cardamom powder for a unique flavor.
+- Blend for **about 1 minute** until the mixture is completely smooth and creamy.
+- Pour the blended drink into a glass.
+- (Optional) Garnish with a few mint leaves or 5g of crushed nuts on top.
+
+## Additional Notes
+
+- Choose a ripe avocado to ensure the drink has a creamy texture and vibrant color.
+- For a colder texture, reduce the amount of milk slightly and add a few ice cubes before blending.
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.