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/breakfast/苏格兰蛋/苏格兰蛋.md

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+<!-- This is a sample recipe template file from the HowToCook repository. -->
+<!-- Note: When writing, there must be exactly one space between Chinese characters and English words or numbers. -->
+<!-- Note: When writing, there must be exactly one empty line between the title and the body text. -->
+
+# How to Make Scotch Eggs
+
+<!-- The title must be in the format `Dish Name` + `How to Make`. It should match the filename. -->
+
+<!-- Images are recommended if available. -->
+
+![Simple Scotch Eggs](./egg1.png)
+
+Scotch eggs are made by wrapping fresh minced meat around an egg and frying it until golden brown. This traditional version is quite labor-intensive, so we provide a simplified version here. For the complex version, please search online.
+
+The simplified Scotch egg is made by wrapping a soft-boiled egg with cheese and bacon in a flaky pastry sheet, then frying it until golden brown. It takes approximately 20-30 minutes.
+
+Estimated Cooking Difficulty: ★★★
+
+## Ingredients and Tools
+
+- Eggs
+- Flaky pastry sheets
+- Cheese
+- Bacon
+- Air fryer or deep fryer
+
+## Quantities
+
+> For one serving
+
+- Eggs: 50g (approximately 1 egg)
+- Flaky pastry: 1-2 sheets (depending on egg size)
+- Cheese slices: 1-2 slices
+- Bacon slices: 1-2 slices
+
+## Instructions
+
+- Place eggs in a pot of cold water. Bring to a boil and cook for 3 minutes, then remove.
+- Transfer the eggs to an ice bath to cool quickly, making peeling easier and keeping the shell intact.
+- Wrap the peeled eggs with cheese slices.
+- Wrap the cheese-covered eggs with bacon slices.
+- Trim the edges of the flaky pastry sheets to form a rectangle large enough to wrap the eggs.
+- Fry in oil at 60% heat (indicated by slight movement on the oil surface, faint blue smoke, and bubbles forming around a chopstick inserted into the oil) until golden brown.
+- Alternatively, use an air fryer at 160°C (320°F) for 15 minutes.
+- Slice and serve.
+
+## Additional Notes
+
+- Cheese slices, bacon slices, and flaky pastry sheets can be purchased on Taobao.
+
+![Result](./egg2.png)
+
+![Result](./egg3.png)
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.