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/vegetable_dish/干锅花菜/干锅花菜.md

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+# Recipe for Dry Pot Cauliflower
+
+![Finished Dry Pot Cauliflower](./干锅花菜.jpg)
+
+Dry Pot Cauliflower is a common dish in Hunan cuisine.
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Cauliflower
+- Pork belly
+- Chili peppers
+- Light soy sauce
+- White sugar
+- Garlic
+- Salt
+- Oil
+
+## Measurements
+
+Per serving:
+
+- Cauliflower 400 g
+- Pork belly 100 g
+- Chili peppers 1-2
+- Light soy sauce 10 ml
+- White sugar 5 g
+- Garlic cloves 3-4
+- Salt 2 g
+- Oil 10 ml
+
+## Instructions
+
+- Place the cauliflower florets face down and soak them in light salt water for 20 minutes. Then rinse and separate them into small florets using a small knife.
+- Blanch in boiling water for 1 minute, then immediately rinse with cold water until completely cool. Drain and set aside.
+- Slice the pork belly into thin pieces. Separate the white part of the garlic and crush it with the flat side of a knife. Cut the small red chili peppers into sections.
+- Heat the pan and add oil. Once the oil is hot, stir-fry the white part of the green onion until fragrant.
+- Add the pork belly slices to the pan and stir-fry over medium heat until the surface changes color completely. Continue stir-frying for a while to render out some of the fat from the fatty parts.
+- Pour in the red chili sections and cauliflower, and stir-fry a few times.
+- Add 10 ml of light soy sauce.
+- Add 5 g of white sugar, turn the heat to high, and continuously stir-fry for 1 minute.
+- Cut the garlic leaves into sections, add them to the pan, stir-fry a few times, then turn off the heat, cover the lid, and let it simmer for 1 minute.
+
+## Additional Content
+
+If you encounter any issues or have suggestions for improving the process while following this guide, please submit an Issue or Pull request.