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/drink/泰国手标红茶/泰国手标红茶.md

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+
+# How to Make Thai Hand-Label Black Tea
+
+![Finished Thai Hand-Label Black Tea](./Thai Hand-Label Black Tea.jpg)
+
+Thai Hand-Label Black Tea is a milk tea commonly found on the streets of Thailand, known for its rich, pure flavor and creamy texture.
+
+Estimated Cooking Difficulty: ★★★
+
+## Essential Ingredients and Tools
+
+- Water
+- Tea powder
+- Condensed milk
+- White sugar
+- Milk
+- Digital scale
+- Measuring container
+- Hong Kong-style milk tea filter bag
+
+## Calculations
+
+Before each preparation, determine how many servings you want to make. One serving is sufficient for one person.
+
+Per serving:
+
+- Water (600cc)
+- Tea powder (20g)
+- White sugar (24g)
+- Milk (18ml)
+- Condensed milk (24g)
+
+## Instructions
+
+- Boil 600cc of water over high heat.
+- Place 20g of tea powder into the filter bag, pour the boiling water through the bag, and filter it 20 times.
+- Using a digital scale, measure 24g of condensed milk, 24g of white sugar, and 18ml of milk, then place them into a kettle with a capacity of 1000ml or more.
+- Pour the filtered tea into the kettle and stir until the white sugar is completely dissolved.
+- Refrigerate the mixture for at least 4 hours.
+- Add 6-8 ice cubes before drinking.
+
+## Additional Notes
+
+If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.