chore: v3.0 release related changes

- Update project config and data files
- Refactor index page UI
- Add new recipes config
- Update enrich-recipes and upload scripts
- Clean up deprecated data files

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: LeeJim

.gitignore

@@ -1,4 +1,6 @@
 node_modules
 miniprogram_npm
 package-lock.json
-/config.js
+/config.js
+data/
+test-output.json

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "HowToCook"]
 	path = HowToCook
-	url = git@github.com:Anduin2017/HowToCook.git
+	url = https://github.com/Anduin2017/HowToCook.git