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/金针菇日本豆腐煲.md

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+# How to Make Enoki Mushroom and Japanese Tofu Casserole
+
+Enoki Mushroom and Japanese Tofu Casserole is an easy-to-make everyday dish.
+
+Estimated Cooking Difficulty: ★★
+
+## Essential Ingredients and Tools
+
+- Enoki mushrooms
+- Japanese tofu (Yuba tofu)
+- Thai chili peppers
+- Light soy sauce
+- Oyster sauce
+- Salt
+- Sugar
+- Cooking oil
+
+## Measurements
+
+Per serving:
+
+- Enoki mushrooms: 1-2 bunches
+- Tofu: 2 packages
+- Thai chili peppers: 3-5 pieces, finely chopped
+- Garlic: 2-3 cloves
+- Light soy sauce: 15ml
+- Oyster sauce: 5ml
+- Dark soy sauce: 3ml
+- Sugar: 3g
+- Cooking oil: 10-15ml
+
+## Instructions
+
+- Slice the tofu and pan-fry over low heat until golden brown on both sides. Set aside.
+- Mince the garlic; prepare the sauce by mixing light soy sauce, oyster sauce, dark soy sauce, sugar, and 100ml of water. Set aside.
+- Heat oil in a pan. Once hot, add the Thai chili peppers and minced garlic to sauté until fragrant. Add the enoki mushrooms and stir-fry until softened. Arrange the fried tofu slices on top of the mushrooms. Pour in the prepared sauce (from step 2), cover, and simmer for 5 minutes. Finally, increase the heat to reduce the sauce.
+
+## Additional Tips
+
+- Ensure the enoki mushrooms are stir-fried until fully softened.
+- Avoid stirring or flipping the tofu too much, as it breaks easily.
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.