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/烙饼/烙饼.md

@@ -0,0 +1,35 @@
+# How to Make Scallion Pancakes
+
+Estimated Cooking Difficulty: ★★★★
+
+## Essential Ingredients and Tools
+
+* Oil
+* Flour
+* Electric Griddle
+
+## Measurements
+
+Note: This staple food recipe does not offer scaled-down or scaled-up versions. The quantities below are selected as the most suitable for beginners:
+
+* Flour = 400g
+* Hot Water = 130ml (80°C)
+* Cold Water = 130ml
+
+## Instructions
+
+* Pour 400g of flour into a bowl. Use half the cold water and half the hot water to mix the dough until it forms crumbly strands. Knead it by hand into a smooth dough ball. Cover with plastic wrap and let it rest for 40 minutes.
+* When there are 10 minutes left until the dough is ready, check the [Oil Paste Recipe](../../condiment/油酥.md) (hot oil paste yields better results).
+* Do not knead the rested dough again. Press it down slightly, then divide it into four equal portions using a horizontal cut and a vertical cut.
+* Roll each portion into a ball and flatten it into a pancake roughly the same size as your electric griddle. Take 1/4 of the oil paste and spread it evenly over the surface of the pancake.
+* Cut along the radius of the pancake from the edge to the center. Roll the pancake up from the outer edge into a cone shape. Pinch the tip of the cone tightly to prevent the oil paste from leaking out.
+* Press down on the pointed tip of the cone to flatten it, then roll it out again into a pancake roughly the same size as the electric griddle (approximately 3mm thick).
+* Preheat the electric griddle and apply a thin layer of cold oil (heat the pan first, then add cold oil). Place the rolled-out pancake onto the griddle. Brush a little oil on top of the pancake and spread it evenly (to lock in moisture). Cover with the lid.
+* Cook over high heat for one minute. Open the lid, flip the pancake, and cook for another minute.
+* Repeat the above steps until the pancake is fully cooked.
+
+![Finished Product](./成品.jpg)
+
+## Additional Information
+
+If you encounter any issues or have suggestions for improving the process while following this guide, please submit an Issue or Pull request.