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/meat_dish/香煎五花肉/香煎五花肉.md

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+# How to Pan-Fry Pork Belly
+
+![Pan-Fried Pork Belly](./香煎五花肉.jpg)
+
+Pan-fried pork belly is a simple and easy-to-prepare dish. The pork belly is rich and fatty without being greasy, while the lettuce leaves are crisp, fresh, and healthy. With a little bit of cooking experience, you can complete this dish in about half an hour.
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Pork belly strips (recommended dimensions: 20cm x 6cm x 5cm)
+- Lettuce
+- Soy sauce, salt, MSG, cooking wine, ginger, garlic, oil, doubanjiang (fermented broad bean paste)
+
+## Calculation
+
+Before each preparation, determine how many servings you plan to make. One serving is sufficient for one person.
+
+Per serving:
+
+- Pork belly strips (recommended dimensions: 20cm x 6cm x 5cm)
+- One head of lettuce
+- Cooking oil: 5ml
+
+## Instructions
+
+- Slice the pork belly strips along the long edge into pieces 1mm–1.5mm thick. Set aside.
+- Place the sliced pork belly in a bowl. Add 8g soy sauce, 1g salt, 1g MSG, 10g cooking wine, two slices of ginger, and two smashed garlic cloves. Marinate for 10 minutes.
+- Pull the lettuce leaves off by hand, wash them thoroughly, and set aside.
+- Heat a pan and pour in 5ml of cooking oil. Once the oil begins to lightly smoke, add the pork belly. Pan-fry one side until golden brown and crispy, then flip and repeat on the other side.
+- Remove the pork belly from the pan and plate it.
+- Spread doubanjiang on the lettuce leaves, wrap the pork belly inside, and serve.
+
+## Additional Notes
+
+- Be careful of hot oil splatters while cooking.
+
+If you encounter any issues or have suggestions for improvement after following this guide, please submit an Issue or Pull request.