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/tips/learn/学习煮.md

@@ -0,0 +1,12 @@
+# Boiling
+
+## Process
+
+Pour water into the pot—turn on the heat and place the pot on the burner to warm—add ingredients once the water reaches a rolling boil (vigorous bubbling with large bubbles forming).
+
+### Important Notes
+
+* Covering the pot while heating can speed up the process. **However, this carries the risk of boiling over.** Continuous heating may cause the turbulent fluid to overflow the pot, which is known as boiling over.
+* **If the pot is about to boil over, immediately reduce the heat to low and remove the lid.**
+* To heat faster while avoiding overflow, you can leave the lid partially open to allow steam to escape, or reduce the heat to low later in the process and monitor the pot closely.
+* Depending on the recipe, ingredients can also be placed in cold water. However, this will take longer to reach a boil.