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/老友猪肉粉/老友猪肉粉.md

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+# How to Make Lao You Pork Rice Noodles
+
+![Example dish](老友猪肉粉.jpg)
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Rice noodles
+- Pork
+- Sour bamboo shoots
+- Chopped chili peppers
+- Fermented black beans
+- Garlic
+- Cooking wine
+- Light soy sauce
+- White sugar
+- Rice vinegar
+- Salt
+- Oil
+- Cornstarch
+- Pepper powder
+
+## Quantities
+
+Per serving:
+
+- Rice noodles (250g; remember to soak them in warm water at 50°C for half an hour)
+- Pork (50g)
+- Sour bamboo shoots (50g)
+- Chopped chili peppers (15g; adjust amount to personal preference after chopping)
+- Fermented black beans (30g)
+- Garlic (10g)
+- Cooking wine (10-20ml)
+- Light soy sauce (15ml)
+- White sugar (5g; omit if you do not prefer sweetness)
+- Rice vinegar (5ml)
+- Salt (5g)
+- Oil (15ml)
+- Cornstarch (15g)
+- Pepper powder (10g)
+
+## Instructions
+
+- Place all the pork in a bowl and season with cooking wine, salt, light soy sauce, cornstarch, and pepper powder. Set aside.
+- Heat a wok without oil, add all the sour bamboo shoots, and stir-fry until the moisture evaporates. Create a space in the center of the dried sour bamboo shoots.
+- Add 10-15ml of cooking oil, all the garlic, chopped chili peppers, and fermented black beans into the center of the dried sour bamboo shoots. Stir-fry everything in the center until fragrant.
+- Add all the seasoned pork. Continue to add 10ml of light soy sauce and stir-fry for one minute.
+- Add 5ml of rice vinegar, 10ml of light soy sauce, and 450ml of water. Bring to a boil.
+- Once the water boils, add the soaked rice noodles and continue to cook for 3 minutes before serving.
+
+## Additional Notes
+
+- Remember that the rice noodles must be soaked beforehand for the best taste; unsoaked noodles will be difficult to eat!
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.