- Add 03_patch_settings.yml to sync $wgServer/$wgCanonicalServer, DB vars, and language
- Use single-quoted PHP strings with proper escaping; idempotent grep guards
- Wire task into main.yml; rename 03_admin→04_admin and 04_extensions→05_extensions
Ref: https://chatgpt.com/share/68c3649a-e830-800f-a059-fc8eda8f76bb