fix: add magic module declaration to meta_plugin

Co-authored-by: aider (openai/andrew/openrouter/anthropic/claude-sonnet-4) <aider@aider.chat>

src/meta_plugin.rs

@@ -7,6 +7,7 @@ use log::debug;
 pub mod program;
 pub mod digest;
 pub mod system;
+pub mod magic;
 
 use crate::meta_plugin::program::MetaPluginProgram;
 use crate::meta_plugin::digest::{DigestSha256MetaPlugin, ReadTimeMetaPlugin, ReadRateMetaPlugin};