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/蛋炒饭.md

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+# How to Make Egg Fried Rice
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+* Cold cooked rice
+* Eggs
+* Ham
+* Cucumber
+* Carrot
+* Cooking oil
+* Salt
+* Pepper powder
+* Light soy sauce
+* Scallions (green onions)
+* Cooked meats such as Dengying beef shreds, luncheon meat, Chinese sausage, or braised pork... (optional substitutes)
+
+For the rice preparation, you can refer to [How to Make Rice](./rice/electric_rice_cooker_steamed_rice.md).
+
+## Calculations
+
+Determine how many servings you plan to make before starting. One serving is sufficient for 1-2 people.
+
+Total quantities:
+
+* Cold cooked rice (servings * 500ml)
+* Eggs (servings * 1.5, rounded down)
+* Ham (servings * 2 slices)
+* Cucumber (optional, servings * 30g)
+* Carrot (optional, servings * 30g)
+* Cooking oil (servings * 12ml)
+* Salt (servings * 4g to servings * 6g)
+* Pepper powder (servings * 8g)
+* Scallions (servings * 1 bunch)
+* Light soy sauce (servings * 10ml)
+
+Use the above parameters to calculate the required proportion of raw materials.
+
+## Instructions
+
+* Break up the cold rice into small pieces using a spatula in advance.
+* Slice or cube the ham, carrots, cucumbers, etc., as needed.
+* If you have cooked meat on hand, prepare it for better flavor.
+* Separate the egg whites and yolks. Beat each separately in a large bowl. Note: Do not add salt at this stage.
+* Heat a wok over high heat until it starts to smoke. Add cooking oil, then pour in the egg whites. Once they solidify, remove them from the wok and set aside.
+* If there is enough oil, add the egg yolks directly. If not, add more cooking oil and heat it over high heat.
+* Once the egg yolks solidify, reduce the heat to medium-low. Add the ham, cooked meat, carrots, cucumbers, and other prepared ingredients. Stir-fry for 10 seconds until fragrant.
+* Add the egg whites back in. Stir-fry for 5 seconds, then quickly add the rice. Stir-fry over high heat to ensure every grain of rice is coated with egg.
+* During the stir-frying process, break up any clumps of rice. This step takes longer; continue until the rice is fully broken down and evenly mixed.
+* Reduce the heat to low. Add salt, pepper powder, and light soy sauce.
+* Stir-fry further until well combined. The dish is nearly done when you see the rice grains "jumping" in the wok.
+* Finally, add the scallions and stir-fry for another 10 seconds.
+* Turn off the heat and transfer to a bowl.
+
+## Additional Notes
+
+* **Technical Summary**
+  - Using overnight cold rice yields the best results. If you don't have cold rice, you can cook fresh rice and cool it rapidly in the refrigerator. However, achieving a "distinct grain" texture will require longer stir-frying.
+  - To achieve the "distinct grain" texture, the rice must be fried until dry. Overnight rice is preferred because it has already lost some moisture.
+
+If you encounter any issues or have suggestions for improving the process outlined in this guide, please submit an Issue or Pull Request.