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/staple/炒意大利面/炒意大利面.md

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+
+# How to Make Stir-Fried Pasta
+
+![Pasta](./a.jpg)
+
+This is a simple recipe for soft and chewy pasta, taking about 30 minutes to prepare.
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Pasta
+- Sliced fatty beef
+- Ketchup / Black pepper sauce (choose one)
+- Rapeseed oil (other vegetable oils work too)
+
+## Measurements
+
+- Pasta: 50g per person
+- Fatty beef: 5 slices per person
+- Cooking oil: 5ml per 50g of pasta
+
+## Instructions
+
+- Add 250g of water per person
+- Once the water boils, add the pasta and cook over medium heat for 15–20 minutes (this type of pasta is usually quite firm; it's best to taste it before removing. If the center is still slightly hard, continue cooking)
+- Remove the pasta and set aside on a plate
+- Heat a pan, pour in the cooking oil, and when the oil is moderately hot, add the pasta and stir-fry for one minute (add a little water if it's too dry)
+- Add 10g of ketchup, the fatty beef, and 2g of salt, then continue stir-frying for one minute
+- Remove from heat
+
+## Additional Notes
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.