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.agents/skills/wp-plugin-development/references/structure.md

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+# Plugin structure and loading
+
+Use this file when introducing or refactoring a plugin architecture.
+
+## Core concepts
+
+- Main plugin file contains the plugin header and bootstraps the plugin.
+- Prefer predictable init:
+  - minimal boot file
+  - a loader/class that registers hooks
+  - admin-only code behind admin hooks
+
+Upstream reference:
+
+- https://developer.wordpress.org/plugins/plugin-basics/
+