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/芹菜拌茶树菇/芹菜拌茶树菇.md

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+# How to Make Celery with Tea Tree Mushrooms
+
+![Finished Celery with Tea Tree Mushrooms](./芹菜拌茶树菇.jpg)
+![Minxing Tea Tree Mushrooms](./闽星茶树菇.jpg)
+
+Celery with Tea Tree Mushrooms is a simple and easy-to-make cold dish. It is rich in various vitamins and minerals essential for the human body. Beginners can typically complete it in about 30 minutes.
+
+Estimated Cooking Difficulty: ★★
+
+## Essential Ingredients and Tools
+
+- Minxing Tea Tree Mushrooms
+- Celery
+- Sesame Oil
+- Oyster Sauce
+- Weijixian (Light Soy Sauce)
+- Table Salt
+
+## Quantities
+
+Determine how many servings you plan to make before starting. One serving is sufficient for 1-2 people.
+
+Per serving:
+
+- Minxing Tea Tree Mushrooms: 1 bottle
+- Celery: 250-300g (Celery shoots about 30cm tall are recommended. If unavailable, celery greens or regular celery can be used, but they require slightly longer blanching to cook through)
+- Sesame Oil: 5ml
+- Oyster Sauce: approximately 7ml
+- Weijixian: 3ml
+- Table Salt: approximately 2g
+
+## Instructions
+
+- (Skip this step if using celery shoots) Boil a kettle of hot water and set aside.
+- Pick over fresh celery shoots or celery, removing yellow leaves, and wash them. Set aside.
+- (Skip this step if using celery shoots) Separate the celery leaves from the stalks. Place the stalks in a bowl. Cut the celery stalks into strips 2-3mm wide. This step helps the celery blanch faster and more evenly, resulting in a crisper and more refreshing texture.
+- Cut the celery shoots into 4cm segments. Set aside.
+- (Skip this step if using celery shoots) Heat a pot and pour the boiling water from the kettle into it until it bubbles and boils.
+- (Skip this step if using celery shoots) Add the cut celery strips to the pot to blanch. After about 20 seconds, add the celery leaves. After 5 more seconds, turn off the heat, remove everything, and rinse with cold water. Set aside.
+- Place the blanched celery or celery shoots in a bowl. Sprinkle with the prepared salt, sesame oil, oyster sauce, and Weijixian. Mix well.
+- Add the tea tree mushrooms to the bowl and mix well.
+- Plate the dish.
+- Serve and enjoy.
+
+## Additional Notes
+
+- The water level during blanching must completely cover the celery.
+- If the celery leaves are too tough or hard, you can omit them.
+
+If you encounter any issues or have suggestions for improving the process while following this guide, please submit an Issue or Pull request.