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/凉粉/凉粉.md

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+# How to Make Liangfen
+
+![liangfen](./lf1.jpg)
+
+Liangfen won't make you feel sad!
+
+Estimated Cooking Difficulty: ★★★
+
+## Ingredients and Tools
+
+- Pea starch
+- Garlic
+- Millet peppers
+- Chili powder
+- Soy sauce
+- Vinegar
+- White sugar
+- Chicken bouillon powder
+- Salt
+- Crushed peanuts
+- Cilantro
+
+## Quantities
+
+The ingredients listed below are for one serving. Please determine how many servings you want to make before starting. One serving is exactly enough for one person.
+
+- Pea starch: 100g
+- Garlic: 3 cloves
+- Millet peppers: 3 pieces
+- Chili powder: 10g
+- Soy sauce: 10ml
+- Vinegar: 10ml
+- White sugar: 3ml
+- Chicken bouillon powder: 3g
+- Salt: 3g
+- Crushed peanuts: 5g
+- Cilantro: 5g
+
+## Instructions
+
+- Prepare the ingredients.
+
+    ![1](./lf2.jpg)
+
+- Mix 100g of pea starch with 100g of water and stir well.
+
+    ![bz2](./lf3.jpg)
+
+- Pour 600g of water into a pot, bring to a boil over high heat, then reduce to low heat.
+
+    ![bz4](./lf4.jpg)
+
+- Pour in the starch water while stirring continuously until the mixture becomes thick and has an even color.
+
+    ![bz5](./lf5.jpg)
+
+- Find a container and brush a thin layer of cooking oil on the inside.
+
+    ![bz6](./lf6.jpg)
+
+- Pour the cooked starch mixture into the container and refrigerate for 2-4 hours.
+
+    ![bz7](./lf7.jpg)
+
+- Take it out after refrigeration, unmold, and cut into strips.
+
+    ![bz7](./lf8.jpg)
+
+- Mince the garlic and millet peppers. Add 10g of chili powder and 5g of crushed peanuts, then mix well with hot oil.
+
+    ![bz7](./lf9.jpg)
+
+- Add 10ml of soy sauce, 10ml of vinegar, 5g of white sugar, 3g of chicken bouillon powder, and 3g of salt. Mix well.
+
+    ![bz7](./lf10.jpg)
+
+- Pour the seasoning over the liangfen and sprinkle with cilantro.
+
+    ![bz7](./lf11.jpg)
+
+## Additional Information
+
+- Reference: [Detailed Steps for Making Liangfen](https://www.zhms.cn/recipe/mzvyy.html?source=2)
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull Request.