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/vegetable_dish/凉拌金针菇.md

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+# How to Make Cold Tossed Enoki Mushrooms
+
+Cold tossed enoki mushrooms are a simple and quick appetizer. They have a crisp, tender, and smooth texture, and are rich in dietary fiber and various vitamins. The preparation process does not require complex cooking skills, making it ideal for beginners or for quick meals when you're busy. Beginners can typically complete this dish in just 10 minutes.
+
+Estimated Cooking Difficulty: ★★
+
+## Essential Ingredients and Tools
+
+- Enoki mushrooms
+- Green onions (scallions)
+- Garlic
+- Light soy sauce
+- Vinegar
+- White sugar (optional)
+- Sesame oil (optional)
+- Chili oil (optional)
+
+## Measurements
+
+Before each preparation, determine how many servings you wish to make. One serving is sufficient for one person.
+
+Per serving:
+
+- Enoki mushrooms: 150 g (approximately 1 small pack)
+- Green onions: 5 g
+- Garlic: 2 cloves
+- Light soy sauce: 15 ml
+- Vinegar: 10 ml
+- White sugar: 3 g (optional)
+- Sesame oil: 5 ml (optional)
+- Chili oil: 5 ml (optional)
+
+## Instructions
+
+- Cut off the root ends of the enoki mushrooms, rinse them thoroughly with clean water, and set aside.
+- Wash the green onions, chop them into fine pieces, and set aside.
+- Peel the garlic, mince it, and set aside.
+- Add 1000 ml of drinking water to a pot and bring to a boil over high heat.
+- Add the enoki mushrooms and boil for **1-2 minutes** until they become soft.
+- Remove the cooked enoki mushrooms, drain the water well, place them in a large bowl, and set aside.
+- In another clean small bowl, add 15 ml of light soy sauce, 10 ml of vinegar, 3 g of white sugar (optional), and 5 ml of sesame oil (optional).
+- Add the minced garlic.
+- Stir well to fully dissolve the white sugar and evenly mix the sauce.
+- Pour the prepared sauce evenly over the enoki mushrooms.
+- Sprinkle the chopped green onions on top.
+- Drizzle with 5 ml of chili oil according to your preference (optional).
+- Gently toss with chopsticks to mix, and it is ready to eat.
+
+## Additional Notes
+
+- Do not blanch the enoki mushrooms for too long, as it may affect their texture.
+- The ratio of the sauce can be adjusted according to personal taste preferences.
+- If you do not like spicy food, you can omit the chili oil.
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.